* [PATCH v5 00/15] ARM: mxs: Add initial support for MX23 and MX28
@ 2010-12-10 8:06 Shawn Guo
2010-12-10 8:06 ` [PATCH v5 07/15] ARM: mxs: Add gpio support Shawn Guo
` (2 more replies)
0 siblings, 3 replies; 12+ messages in thread
From: Shawn Guo @ 2010-12-10 8:06 UTC (permalink / raw)
To: linux-arm-kernel
Per Russell's advice, the updated patches are sent in patch series
with version number increment. The head version of the patch set
becomes v5.
The change log of this version can be found in each patch.
Thanks for the review effort.
[PATCH v5 07/15] ARM: mxs: Add gpio support
[PATCH v5 08/15] ARM: mxs: Add iomux support
[PATCH v5 09/15] ARM: mxs: Add clock support
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-10 8:06 [PATCH v5 00/15] ARM: mxs: Add initial support for MX23 and MX28 Shawn Guo
@ 2010-12-10 8:06 ` Shawn Guo
2010-12-10 10:24 ` Uwe Kleine-König
2010-12-10 8:06 ` [PATCH v5 08/15] ARM: mxs: Add iomux support Shawn Guo
2010-12-10 8:06 ` [PATCH v5 09/15] ARM: mxs: Add clock support Shawn Guo
2 siblings, 1 reply; 12+ messages in thread
From: Shawn Guo @ 2010-12-10 8:06 UTC (permalink / raw)
To: linux-arm-kernel
MXS-based SoCs implement gpio support in block PINCTRL.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
---
Changes for v5:
- Leave PIN2IRQ set when disabling gpio IRQ to avoid
losting interrupt
Changes for v3:
- include/mach/gpio.h: remove the inclusion of hardware.h
- gpio.c: change inclusion of hardware.h to mx23.h plus mx28.h
- Remove spinlock totally since SET/CLE can be used in all the
gpio register access
Changes for v2:
- Create arch/arm/mach-mxs/gpio.h to accommodate stuff private for mach-mxs
- Use GPIO_INT_LEV_MASK and GPIO_INT_POL_MASK instead of constant
- Remove both edges IRQ support which is not needed
- Use SET and CLR register of PINCTRL_DOE in _set_gpio_direction()
- Use pr_info over printk(KERN_INFO)
arch/arm/mach-mxs/gpio.c | 319 +++++++++++++++++++++++++++++++++
arch/arm/mach-mxs/gpio.h | 33 ++++
arch/arm/mach-mxs/include/mach/gpio.h | 34 ++++
3 files changed, 386 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-mxs/gpio.c
create mode 100644 arch/arm/mach-mxs/gpio.h
create mode 100644 arch/arm/mach-mxs/include/mach/gpio.h
diff --git a/arch/arm/mach-mxs/gpio.c b/arch/arm/mach-mxs/gpio.c
new file mode 100644
index 0000000..918317f
--- /dev/null
+++ b/arch/arm/mach-mxs/gpio.c
@@ -0,0 +1,319 @@
+/*
+ * MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de>
+ * Copyright 2008 Juergen Beisert, kernel at pengutronix.de
+ *
+ * Based on code from Freescale,
+ * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <mach/mx23.h>
+#include <mach/mx28.h>
+#include <asm-generic/bug.h>
+
+#include "gpio.h"
+
+static struct mxs_gpio_port *mxs_gpio_ports;
+static int gpio_table_size;
+
+#define PINCTRL_DOUT(n) ((cpu_is_mx23() ? 0x0500 : 0x0700) + (n) * 0x10)
+#define PINCTRL_DIN(n) ((cpu_is_mx23() ? 0x0600 : 0x0900) + (n) * 0x10)
+#define PINCTRL_DOE(n) ((cpu_is_mx23() ? 0x0700 : 0x0b00) + (n) * 0x10)
+#define PINCTRL_PIN2IRQ(n) ((cpu_is_mx23() ? 0x0800 : 0x1000) + (n) * 0x10)
+#define PINCTRL_IRQEN(n) ((cpu_is_mx23() ? 0x0900 : 0x1100) + (n) * 0x10)
+#define PINCTRL_IRQLEV(n) ((cpu_is_mx23() ? 0x0a00 : 0x1200) + (n) * 0x10)
+#define PINCTRL_IRQPOL(n) ((cpu_is_mx23() ? 0x0b00 : 0x1300) + (n) * 0x10)
+#define PINCTRL_IRQSTAT(n) ((cpu_is_mx23() ? 0x0c00 : 0x1400) + (n) * 0x10)
+
+#define GPIO_INT_FALL_EDGE 0x0
+#define GPIO_INT_LOW_LEV 0x1
+#define GPIO_INT_RISE_EDGE 0x2
+#define GPIO_INT_HIGH_LEV 0x3
+#define GPIO_INT_LEV_MASK (1 << 0)
+#define GPIO_INT_POL_MASK (1 << 1)
+
+/* Note: This driver assumes 32 GPIOs are handled in one register */
+
+static void _clear_gpio_irqstatus(struct mxs_gpio_port *port, u32 index)
+{
+ __raw_writel(1 << index,
+ port->base + PINCTRL_IRQSTAT(port->id) + MXS_CLR_ADDR);
+}
+
+static void _set_gpio_irqenable(struct mxs_gpio_port *port, u32 index,
+ int enable)
+{
+ if (enable) {
+ __raw_writel(1 << index,
+ port->base + PINCTRL_IRQEN(port->id) + MXS_SET_ADDR);
+ __raw_writel(1 << index,
+ port->base + PINCTRL_PIN2IRQ(port->id) + MXS_SET_ADDR);
+ } else {
+ __raw_writel(1 << index,
+ port->base + PINCTRL_IRQEN(port->id) + MXS_CLR_ADDR);
+ }
+}
+
+static void gpio_ack_irq(u32 irq)
+{
+ u32 gpio = irq_to_gpio(irq);
+ _clear_gpio_irqstatus(&mxs_gpio_ports[gpio / 32], gpio & 0x1f);
+}
+
+static void gpio_mask_irq(u32 irq)
+{
+ u32 gpio = irq_to_gpio(irq);
+ _set_gpio_irqenable(&mxs_gpio_ports[gpio / 32], gpio & 0x1f, 0);
+}
+
+static void gpio_unmask_irq(u32 irq)
+{
+ u32 gpio = irq_to_gpio(irq);
+ _set_gpio_irqenable(&mxs_gpio_ports[gpio / 32], gpio & 0x1f, 1);
+}
+
+static int mxs_gpio_get(struct gpio_chip *chip, unsigned offset);
+
+static int gpio_set_irq_type(u32 irq, u32 type)
+{
+ u32 gpio = irq_to_gpio(irq);
+ struct mxs_gpio_port *port = &mxs_gpio_ports[gpio / 32];
+ int edge;
+
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ edge = GPIO_INT_RISE_EDGE;
+ break;
+ case IRQ_TYPE_EDGE_FALLING:
+ edge = GPIO_INT_FALL_EDGE;
+ break;
+ case IRQ_TYPE_LEVEL_LOW:
+ edge = GPIO_INT_LOW_LEV;
+ break;
+ case IRQ_TYPE_LEVEL_HIGH:
+ edge = GPIO_INT_HIGH_LEV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set level or edge */
+ if (edge & GPIO_INT_LEV_MASK)
+ __raw_writel(1 << (gpio & 31),
+ port->base + PINCTRL_IRQLEV(port->id) + MXS_SET_ADDR);
+ else
+ __raw_writel(1 << (gpio & 31),
+ port->base + PINCTRL_IRQLEV(port->id) + MXS_CLR_ADDR);
+
+ /* set polarity */
+ if (edge & GPIO_INT_POL_MASK)
+ __raw_writel(1 << (gpio & 31),
+ port->base + PINCTRL_IRQPOL(port->id) + MXS_SET_ADDR);
+ else
+ __raw_writel(1 << (gpio & 31),
+ port->base + PINCTRL_IRQPOL(port->id) + MXS_CLR_ADDR);
+
+ _clear_gpio_irqstatus(port, gpio & 0x1f);
+
+ return 0;
+}
+
+/* MXS has one interrupt *per* gpio port */
+static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc)
+{
+ u32 irq_stat;
+ struct mxs_gpio_port *port = (struct mxs_gpio_port *)get_irq_data(irq);
+ u32 gpio_irq_no_base = port->virtual_irq_start;
+
+ irq_stat = __raw_readl(port->base + PINCTRL_IRQSTAT(port->id)) &
+ __raw_readl(port->base + PINCTRL_IRQEN(port->id)) &
+ __raw_readl(port->base + PINCTRL_PIN2IRQ(port->id));
+
+ while (irq_stat != 0) {
+ int irqoffset = fls(irq_stat) - 1;
+ generic_handle_irq(gpio_irq_no_base + irqoffset);
+ irq_stat &= ~(1 << irqoffset);
+ }
+}
+
+/*
+ * Set interrupt number "irq" in the GPIO as a wake-up source.
+ * While system is running, all registered GPIO interrupts need to have
+ * wake-up enabled. When system is suspended, only selected GPIO interrupts
+ * need to have wake-up enabled.
+ * @param irq interrupt source number
+ * @param enable enable as wake-up if equal to non-zero
+ * @return This function returns 0 on success.
+ */
+static int gpio_set_wake_irq(u32 irq, u32 enable)
+{
+ u32 gpio = irq_to_gpio(irq);
+ u32 gpio_idx = gpio & 0x1f;
+ struct mxs_gpio_port *port = &mxs_gpio_ports[gpio / 32];
+
+ if (enable) {
+ if (port->irq_high && (gpio_idx >= 16))
+ enable_irq_wake(port->irq_high);
+ else
+ enable_irq_wake(port->irq);
+ } else {
+ if (port->irq_high && (gpio_idx >= 16))
+ disable_irq_wake(port->irq_high);
+ else
+ disable_irq_wake(port->irq);
+ }
+
+ return 0;
+}
+
+static struct irq_chip gpio_irq_chip = {
+ .ack = gpio_ack_irq,
+ .mask = gpio_mask_irq,
+ .unmask = gpio_unmask_irq,
+ .set_type = gpio_set_irq_type,
+ .set_wake = gpio_set_wake_irq,
+};
+
+static void _set_gpio_direction(struct gpio_chip *chip, unsigned offset,
+ int dir)
+{
+ struct mxs_gpio_port *port =
+ container_of(chip, struct mxs_gpio_port, chip);
+
+ if (dir)
+ __raw_writel(1 << offset,
+ port->base + PINCTRL_DOE(port->id) + MXS_SET_ADDR);
+ else
+ __raw_writel(1 << offset,
+ port->base + PINCTRL_DOE(port->id) + MXS_CLR_ADDR);
+}
+
+static void mxs_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct mxs_gpio_port *port =
+ container_of(chip, struct mxs_gpio_port, chip);
+
+ __raw_writel(1 << offset, port->base + PINCTRL_DOUT(port->id) +
+ (value ? MXS_SET_ADDR : MXS_CLR_ADDR));
+}
+
+static int mxs_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct mxs_gpio_port *port =
+ container_of(chip, struct mxs_gpio_port, chip);
+
+ return (__raw_readl(port->base + PINCTRL_DIN(port->id)) >> offset) & 1;
+}
+
+static int mxs_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ _set_gpio_direction(chip, offset, 0);
+ return 0;
+}
+
+static int mxs_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ mxs_gpio_set(chip, offset, value);
+ _set_gpio_direction(chip, offset, 1);
+ return 0;
+}
+
+int __init mxs_gpio_init(struct mxs_gpio_port *port, int cnt)
+{
+ int i, j;
+
+ /* save for local usage */
+ mxs_gpio_ports = port;
+ gpio_table_size = cnt;
+
+ pr_info("MXS GPIO hardware\n");
+
+ for (i = 0; i < cnt; i++) {
+ /* disable the interrupt and clear the status */
+ __raw_writel(0, port[i].base +
+ PINCTRL_PIN2IRQ(i));
+ __raw_writel(0, port[i].base +
+ PINCTRL_IRQEN(i));
+ __raw_writel(~0, port[i].base +
+ PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
+
+ for (j = port[i].virtual_irq_start;
+ j < port[i].virtual_irq_start + 32; j++) {
+ set_irq_chip(j, &gpio_irq_chip);
+ set_irq_handler(j, handle_level_irq);
+ set_irq_flags(j, IRQF_VALID);
+ }
+
+ /* register gpio chip */
+ port[i].chip.direction_input = mxs_gpio_direction_input;
+ port[i].chip.direction_output = mxs_gpio_direction_output;
+ port[i].chip.get = mxs_gpio_get;
+ port[i].chip.set = mxs_gpio_set;
+ port[i].chip.base = i * 32;
+ port[i].chip.ngpio = 32;
+
+ /* its a serious configuration bug when it fails */
+ BUG_ON( gpiochip_add(&port[i].chip) < 0 );
+
+ /* setup one handler for each entry */
+ set_irq_chained_handler(port[i].irq, mxs_gpio_irq_handler);
+ set_irq_data(port[i].irq, &port[i]);
+ }
+
+ return 0;
+}
+
+#define DEFINE_MXS_GPIO_PORT(soc, _id) \
+ { \
+ .chip.label = "gpio-" #_id, \
+ .id = _id, \
+ .irq = soc ## _INT_GPIO ## _id, \
+ .base = soc ## _IO_ADDRESS( \
+ soc ## _PINCTRL ## _BASE_ADDR), \
+ .virtual_irq_start = MXS_GPIO_IRQ_START + (_id) * 32, \
+ }
+
+#define DEFINE_REGISTER_FUNCTION(prefix) \
+int __init prefix ## _register_gpios(void) \
+{ \
+ return mxs_gpio_init(prefix ## _gpio_ports, \
+ ARRAY_SIZE(prefix ## _gpio_ports)); \
+}
+
+#ifdef CONFIG_SOC_IMX23
+static struct mxs_gpio_port mx23_gpio_ports[] = {
+ DEFINE_MXS_GPIO_PORT(MX23, 0),
+ DEFINE_MXS_GPIO_PORT(MX23, 1),
+ DEFINE_MXS_GPIO_PORT(MX23, 2),
+};
+DEFINE_REGISTER_FUNCTION(mx23)
+#endif
+
+#ifdef CONFIG_SOC_IMX28
+static struct mxs_gpio_port mx28_gpio_ports[] = {
+ DEFINE_MXS_GPIO_PORT(MX28, 0),
+ DEFINE_MXS_GPIO_PORT(MX28, 1),
+ DEFINE_MXS_GPIO_PORT(MX28, 2),
+ DEFINE_MXS_GPIO_PORT(MX28, 3),
+ DEFINE_MXS_GPIO_PORT(MX28, 4),
+};
+DEFINE_REGISTER_FUNCTION(mx28)
+#endif
diff --git a/arch/arm/mach-mxs/gpio.h b/arch/arm/mach-mxs/gpio.h
new file mode 100644
index 0000000..49ed668
--- /dev/null
+++ b/arch/arm/mach-mxs/gpio.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel at pengutronix.de
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __MXS_GPIO_H__
+#define __MXS_GPIO_H__
+
+struct mxs_gpio_port {
+ void __iomem *base;
+ int id;
+ int irq;
+ int irq_high;
+ int virtual_irq_start;
+ struct gpio_chip chip;
+};
+
+int mxs_gpio_init(struct mxs_gpio_port*, int);
+
+#endif /* __MXS_GPIO_H__ */
diff --git a/arch/arm/mach-mxs/include/mach/gpio.h b/arch/arm/mach-mxs/include/mach/gpio.h
new file mode 100644
index 0000000..0a80c32
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/gpio.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __MACH_MXS_GPIO_H__
+#define __MACH_MXS_GPIO_H__
+
+#include <asm-generic/gpio.h>
+
+#define MXS_GPIO_NR(bank, nr) ((bank) * 32 + (nr))
+
+/* use gpiolib dispatchers */
+#define gpio_get_value __gpio_get_value
+#define gpio_set_value __gpio_set_value
+#define gpio_cansleep __gpio_cansleep
+
+#define gpio_to_irq(gpio) (MXS_GPIO_IRQ_START + (gpio))
+#define irq_to_gpio(irq) ((irq) - MXS_GPIO_IRQ_START)
+
+#endif /* __MACH_MXS_GPIO_H__ */
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH v5 08/15] ARM: mxs: Add iomux support
2010-12-10 8:06 [PATCH v5 00/15] ARM: mxs: Add initial support for MX23 and MX28 Shawn Guo
2010-12-10 8:06 ` [PATCH v5 07/15] ARM: mxs: Add gpio support Shawn Guo
@ 2010-12-10 8:06 ` Shawn Guo
2010-12-10 8:06 ` [PATCH v5 09/15] ARM: mxs: Add clock support Shawn Guo
2 siblings, 0 replies; 12+ messages in thread
From: Shawn Guo @ 2010-12-10 8:06 UTC (permalink / raw)
To: linux-arm-kernel
MXS-based SoCs implements iomux functions in block PINCTRL.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
---
Changes for v5:
- Change iomux_cfg_t from u64 to u16
- Add namespace MXS_ to shift, mask, and pad definitions
- Use SET/CLR register for 1 bit setting
- Get "if" and "{" at the same line
- Remove space in middle of tabs
- Change "setups" to "configures" in comments
Changes for v3:
- Change iomux_cfg_t to u64 to facilitate adding platform specific
pad_ctrl settings to an existing pad definition
- Change inclusion of hardware.h to mxs.h
- Get iomux_base a hard-assignment in mxs_iomux_setup_pad(), since
mx23 and mx28 share the common pinctrl base adress and it's only
used in mxs_iomux_setup_pad().
- Remove EXPORT_SYMBOL and the static of mxs_iomux_setup_pad()
Changes for v2:
- Define iomux_cfg_t as u64
- Turn mxs_iomux_setup_pad() into a static function
- Fix a bug in mxs_iomux_setup_pad(), muxsel starts at offset 0x100 than 0 of pinctrl block.
arch/arm/mach-mxs/include/mach/iomux-mx23.h | 29 +++++++
arch/arm/mach-mxs/include/mach/iomux-mx28.h | 44 ++++++++++
arch/arm/mach-mxs/include/mach/iomux.h | 116 +++++++++++++++++++++++++++
arch/arm/mach-mxs/iomux.c | 99 +++++++++++++++++++++++
4 files changed, 288 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-mxs/include/mach/iomux-mx23.h
create mode 100644 arch/arm/mach-mxs/include/mach/iomux-mx28.h
create mode 100644 arch/arm/mach-mxs/include/mach/iomux.h
create mode 100644 arch/arm/mach-mxs/iomux.c
diff --git a/arch/arm/mach-mxs/include/mach/iomux-mx23.h b/arch/arm/mach-mxs/include/mach/iomux-mx23.h
new file mode 100644
index 0000000..5a316f4
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/iomux-mx23.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef __MACH_IOMUX_MX23_H__
+#define __MACH_IOMUX_MX23_H__
+
+#include <mach/iomux.h>
+
+/*
+ * The naming convention for the pad modes is MX23_PAD_<padname>__<padmode>
+ * If <padname> or <padmode> refers to a GPIO, it is named GPIO_<unit>_<num>
+ * See also iomux.h
+ *
+ * BANK PIN MUX VOL MA PULL
+ */
+/* DUART */
+#define MX23_PAD_PWM0__DUART_RX MXS_IOMUX_PAD(1, 26, PAD_MUXSEL_2, PAD_VOL_NONE, PAD_4MA, PAD_NOPULL)
+#define MX23_PAD_PWM1__DUART_TX MXS_IOMUX_PAD(1, 27, PAD_MUXSEL_2, PAD_VOL_NONE, PAD_4MA, PAD_NOPULL)
+
+#endif /* __MACH_IOMUX_MX23_H__ */
diff --git a/arch/arm/mach-mxs/include/mach/iomux-mx28.h b/arch/arm/mach-mxs/include/mach/iomux-mx28.h
new file mode 100644
index 0000000..be8ad2d
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/iomux-mx28.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef __MACH_IOMUX_MX28_H__
+#define __MACH_IOMUX_MX28_H__
+
+#include <mach/iomux.h>
+
+/*
+ * The naming convention for the pad modes is MX28_PAD_<padname>__<padmode>
+ * If <padname> or <padmode> refers to a GPIO, it is named GPIO_<unit>_<num>
+ * See also iomux.h
+ *
+ * BANK PIN MUX VOL MA PULL
+ */
+/* DUART */
+#define MX28_PAD_PWM0__DUART_RX MXS_IOMUX_PAD(3, 16, PAD_MUXSEL_2, PAD_3V3, PAD_4MA, PAD_NOPULL)
+#define MX28_PAD_PWM1__DUART_TX MXS_IOMUX_PAD(3, 17, PAD_MUXSEL_2, PAD_3V3, PAD_4MA, PAD_NOPULL)
+
+/* FEC */
+#define MX28_PAD_ENET0_MDC__ENET0_MDC MXS_IOMUX_PAD(4, 0, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET0_MDIO__ENET0_MDIO MXS_IOMUX_PAD(4, 1, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET0_RX_EN__ENET0_RX_EN MXS_IOMUX_PAD(4, 2, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET0_RXD0__ENET0_RXD0 MXS_IOMUX_PAD(4, 3, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET0_RXD1__ENET0_RXD1 MXS_IOMUX_PAD(4, 4, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET0_TX_EN__ENET0_TX_EN MXS_IOMUX_PAD(4, 6, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET0_TXD0__ENET0_TXD0 MXS_IOMUX_PAD(4, 7, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET0_TXD1__ENET0_TXD1 MXS_IOMUX_PAD(4, 8, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+#define MX28_PAD_ENET_CLK__ENET_CLK MXS_IOMUX_PAD(4, 16, PAD_MUXSEL_0, PAD_3V3, PAD_8MA, PAD_PULLUP)
+
+/* GPIO */
+#define MX28_PAD_SSP1_DATA3__GPIO_2_15 MXS_IOMUX_PAD(2, 15, PAD_MUXSEL_GPIO, PAD_3V3, PAD_4MA, PAD_NOPULL)
+#define MX28_PAD_ENET0_RX_CLK__GPIO_4_13 MXS_IOMUX_PAD(4, 13, PAD_MUXSEL_GPIO, PAD_3V3, PAD_4MA, PAD_NOPULL)
+
+#endif /* __MACH_IOMUX_MX28_H__ */
diff --git a/arch/arm/mach-mxs/include/mach/iomux.h b/arch/arm/mach-mxs/include/mach/iomux.h
new file mode 100644
index 0000000..765b361
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/iomux.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ * <armlinux@phytec.de>
+ * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#ifndef __MACH_MXS_IOMUX_H__
+#define __MACH_MXS_IOMUX_H__
+
+/*
+ * IOMUX/PAD Bit field definitions
+ *
+ * PAD_BANK: 0..2 (3)
+ * PAD_PIN: 3..7 (5)
+ * PAD_MUXSEL: 8..9 (2)
+ * PAD_MA: 10..12 (3)
+ * PAD_VOL: 13..14 (2)
+ * PAD_PULL: 15 (1)
+ */
+typedef u16 iomux_cfg_t;
+
+#define MXS_PAD_BANK_SHIFT 0
+#define MXS_PAD_BANK_MASK ((iomux_cfg_t)0x7 << MXS_PAD_BANK_SHIFT)
+#define MXS_PAD_PIN_SHIFT 3
+#define MXS_PAD_PIN_MASK ((iomux_cfg_t)0x1f << MXS_PAD_PIN_SHIFT)
+#define MXS_PAD_MUXSEL_SHIFT 8
+#define MXS_PAD_MUXSEL_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MUXSEL_SHIFT)
+#define MXS_PAD_MA_SHIFT 10
+#define MXS_PAD_MA_MASK ((iomux_cfg_t)0x7 << MXS_PAD_MA_SHIFT)
+#define MXS_PAD_VOL_SHIFT 13
+#define MXS_PAD_VOL_MASK ((iomux_cfg_t)0x3 << MXS_PAD_VOL_SHIFT)
+#define MXS_PAD_PULL_SHIFT 15
+#define MXS_PAD_PULL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_SHIFT)
+
+#define MXS_IOMUX_PAD(_bank, _pin, _muxsel, _vol, _ma, _pull) \
+ (((iomux_cfg_t)(_bank) << MXS_PAD_BANK_SHIFT) | \
+ ((iomux_cfg_t)(_pin) << MXS_PAD_PIN_SHIFT) | \
+ ((iomux_cfg_t)(_muxsel) << MXS_PAD_MUXSEL_SHIFT) | \
+ ((iomux_cfg_t)(_vol) << MXS_PAD_VOL_SHIFT) | \
+ ((iomux_cfg_t)(_ma) << MXS_PAD_MA_SHIFT) | \
+ ((iomux_cfg_t)(_pull) << MXS_PAD_PULL_SHIFT))
+
+#define PAD_MUXSEL_0 0
+#define PAD_MUXSEL_1 1
+#define PAD_MUXSEL_2 2
+#define PAD_MUXSEL_GPIO 3
+
+#define PAD_1V8 0
+#define PAD_3V3 1
+#define PAD_VOL_NONE 2
+
+#define PAD_4MA 0
+#define PAD_8MA 1
+#define PAD_12MA 2
+#define PAD_16MA 3
+#define PAD_MA_NONE 4
+
+#define PAD_NOPULL 0
+#define PAD_PULLUP 1
+
+static inline unsigned int PAD_BANK(iomux_cfg_t pad)
+{
+ return (pad & MXS_PAD_BANK_MASK) >> MXS_PAD_BANK_SHIFT;
+}
+
+static inline unsigned int PAD_PIN(iomux_cfg_t pad)
+{
+ return (pad & MXS_PAD_PIN_MASK) >> MXS_PAD_PIN_SHIFT;
+}
+
+static inline unsigned int PAD_MUXSEL(iomux_cfg_t pad)
+{
+ return (pad & MXS_PAD_MUXSEL_MASK) >> MXS_PAD_MUXSEL_SHIFT;
+}
+
+static inline unsigned int PAD_MA(iomux_cfg_t pad)
+{
+ return (pad & MXS_PAD_MA_MASK) >> MXS_PAD_MA_SHIFT;
+}
+
+static inline unsigned int PAD_VOL(iomux_cfg_t pad)
+{
+ return (pad & MXS_PAD_VOL_MASK) >> MXS_PAD_VOL_SHIFT;
+}
+
+static inline unsigned int PAD_PULL(iomux_cfg_t pad)
+{
+ return (pad & MXS_PAD_PULL_MASK) >> MXS_PAD_PULL_SHIFT;
+}
+
+/*
+ * configures a single pad in the iomuxer
+ */
+int mxs_iomux_setup_pad(iomux_cfg_t pad);
+
+/*
+ * configures multiple pads
+ * convenient way to call the above function with tables
+ */
+int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count);
+
+#endif /* __MACH_MXS_IOMUX_H__*/
diff --git a/arch/arm/mach-mxs/iomux.c b/arch/arm/mach-mxs/iomux.c
new file mode 100644
index 0000000..8450c65
--- /dev/null
+++ b/arch/arm/mach-mxs/iomux.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2004-2006,2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ * <armlinux@phytec.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/gpio.h>
+
+#include <asm/mach/map.h>
+
+#include <mach/mxs.h>
+#include <mach/iomux.h>
+
+/*
+ * configures a single pad in the iomuxer
+ */
+int mxs_iomux_setup_pad(iomux_cfg_t pad)
+{
+ u32 reg, ofs, bp, bm;
+ void __iomem *iomux_base = MXS_IO_ADDRESS(MXS_PINCTRL_BASE_ADDR);
+
+ /* muxsel */
+ ofs = 0x100;
+ ofs += PAD_BANK(pad) * 0x20 + PAD_PIN(pad) / 16 * 0x10;
+ bp = PAD_PIN(pad) % 16 * 2;
+ bm = 0x3 << bp;
+ reg = __raw_readl(iomux_base + ofs);
+ reg &= ~bm;
+ reg |= PAD_MUXSEL(pad) << bp;
+ __raw_writel(reg, iomux_base + ofs);
+
+ /* drive */
+ ofs = cpu_is_mx23() ? 0x200 : 0x300;
+ ofs += PAD_BANK(pad) * 0x40 + PAD_PIN(pad) / 8 * 0x10;
+ /* mA */
+ if (PAD_MA(pad) != PAD_MA_NONE) {
+ bp = PAD_PIN(pad) % 8 * 4;
+ bm = 0x3 << bp;
+ reg = __raw_readl(iomux_base + ofs);
+ reg &= ~bm;
+ reg |= PAD_MA(pad) << bp;
+ __raw_writel(reg, iomux_base + ofs);
+ }
+ /* vol */
+ if (PAD_VOL(pad) != PAD_VOL_NONE) {
+ bp = PAD_PIN(pad) % 8 * 4 + 2;
+ if (PAD_VOL(pad))
+ __raw_writel(1 << bp, iomux_base + ofs + MXS_SET_ADDR);
+ else
+ __raw_writel(1 << bp, iomux_base + ofs + MXS_CLR_ADDR);
+ }
+
+ /* pull */
+ ofs = cpu_is_mx23() ? 0x400 : 0x600;
+ ofs += PAD_BANK(pad) * 0x10;
+ bp = PAD_PIN(pad);
+ if (PAD_PULL(pad))
+ __raw_writel(1 << bp, iomux_base + ofs + MXS_SET_ADDR);
+ else
+ __raw_writel(1 << bp, iomux_base + ofs + MXS_CLR_ADDR);
+
+ return 0;
+}
+
+int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count)
+{
+ const iomux_cfg_t *p = pad_list;
+ int i;
+ int ret;
+
+ for (i = 0; i < count; i++) {
+ ret = mxs_iomux_setup_pad(*p);
+ if (ret)
+ return ret;
+ p++;
+ }
+
+ return 0;
+}
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH v5 09/15] ARM: mxs: Add clock support
2010-12-10 8:06 [PATCH v5 00/15] ARM: mxs: Add initial support for MX23 and MX28 Shawn Guo
2010-12-10 8:06 ` [PATCH v5 07/15] ARM: mxs: Add gpio support Shawn Guo
2010-12-10 8:06 ` [PATCH v5 08/15] ARM: mxs: Add iomux support Shawn Guo
@ 2010-12-10 8:06 ` Shawn Guo
2 siblings, 0 replies; 12+ messages in thread
From: Shawn Guo @ 2010-12-10 8:06 UTC (permalink / raw)
To: linux-arm-kernel
Add clock for MXS-based SoCs, MX23 and MX28.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
---
Changes for v5
- Fix PARENT_RATE_SHIFT from left to right
Changes for v3:
- Fix freq overflow in clock-mx23.c as well
- Fix the overflow using SH_DIV and shifting 8 bits
- Remove the inclusion of hardware.h and include mx23.h/mx28.h
Changes for v2:
- Shift pll0_clock freq 480MHz in children freq computation to avoid overflow
- Fix fec_clk to stand for fec clock than IEEE1588 time clock
- Add pll2_clk into clock lookups, as it's fec phy clock and needs to be on before reset phy
arch/arm/mach-mxs/clock-mx23.c | 526 ++++++++++++++++++++++
arch/arm/mach-mxs/clock-mx28.c | 734 +++++++++++++++++++++++++++++++
arch/arm/mach-mxs/clock.c | 200 +++++++++
arch/arm/mach-mxs/include/mach/clkdev.h | 7 +
arch/arm/mach-mxs/include/mach/clock.h | 64 +++
arch/arm/mach-mxs/regs-clkctrl-mx23.h | 455 +++++++++++++++++++
arch/arm/mach-mxs/regs-clkctrl-mx28.h | 663 ++++++++++++++++++++++++++++
7 files changed, 2649 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-mxs/clock-mx23.c
create mode 100644 arch/arm/mach-mxs/clock-mx28.c
create mode 100644 arch/arm/mach-mxs/clock.c
create mode 100644 arch/arm/mach-mxs/include/mach/clkdev.h
create mode 100644 arch/arm/mach-mxs/include/mach/clock.h
create mode 100644 arch/arm/mach-mxs/regs-clkctrl-mx23.h
create mode 100644 arch/arm/mach-mxs/regs-clkctrl-mx28.h
diff --git a/arch/arm/mach-mxs/clock-mx23.c b/arch/arm/mach-mxs/clock-mx23.c
new file mode 100644
index 0000000..947d439
--- /dev/null
+++ b/arch/arm/mach-mxs/clock-mx23.c
@@ -0,0 +1,526 @@
+/*
+ * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/jiffies.h>
+
+#include <asm/clkdev.h>
+#include <asm/div64.h>
+
+#include <mach/mx23.h>
+#include <mach/common.h>
+#include <mach/clock.h>
+
+#include "regs-clkctrl-mx23.h"
+
+#define CLKCTRL_BASE_ADDR MX23_IO_ADDRESS(MX23_CLKCTRL_BASE_ADDR)
+#define DIGCTRL_BASE_ADDR MX23_IO_ADDRESS(MX23_DIGCTL_BASE_ADDR)
+
+#define PARENT_RATE_SHIFT 8
+
+static int _raw_clk_enable(struct clk *clk)
+{
+ u32 reg;
+
+ if (clk->enable_reg) {
+ reg = __raw_readl(clk->enable_reg);
+ reg &= ~(1 << clk->enable_shift);
+ __raw_writel(reg, clk->enable_reg);
+ }
+
+ return 0;
+}
+
+static void _raw_clk_disable(struct clk *clk)
+{
+ u32 reg;
+
+ if (clk->enable_reg) {
+ reg = __raw_readl(clk->enable_reg);
+ reg |= 1 << clk->enable_shift;
+ __raw_writel(reg, clk->enable_reg);
+ }
+}
+
+/*
+ * ref_xtal_clk
+ */
+static unsigned long ref_xtal_clk_get_rate(struct clk *clk)
+{
+ return 24000000;
+}
+
+static struct clk ref_xtal_clk = {
+ .get_rate = ref_xtal_clk_get_rate,
+};
+
+/*
+ * pll_clk
+ */
+static unsigned long pll_clk_get_rate(struct clk *clk)
+{
+ return 480000000;
+}
+
+static int pll_clk_enable(struct clk *clk)
+{
+ __raw_writel(BM_CLKCTRL_PLLCTRL0_POWER |
+ BM_CLKCTRL_PLLCTRL0_EN_USB_CLKS,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_PLLCTRL0_SET);
+
+ /* Only a 10us delay is need. PLLCTRL1 LOCK bitfied is only a timer
+ * and is incorrect (excessive). Per definition of the PLLCTRL0
+ * POWER field, waiting at least 10us.
+ */
+ udelay(10);
+
+ return 0;
+}
+
+static void pll_clk_disable(struct clk *clk)
+{
+ __raw_writel(BM_CLKCTRL_PLLCTRL0_POWER |
+ BM_CLKCTRL_PLLCTRL0_EN_USB_CLKS,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_PLLCTRL0_CLR);
+}
+
+static struct clk pll_clk = {
+ .get_rate = pll_clk_get_rate,
+ .enable = pll_clk_enable,
+ .disable = pll_clk_disable,
+ .parent = &ref_xtal_clk,
+};
+
+/*
+ * ref_clk
+ */
+#define _CLK_GET_RATE_REF(name, sr, ss) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ unsigned long parent_rate; \
+ u32 reg, div; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##sr); \
+ div = (reg >> BP_CLKCTRL_##sr##_##ss##FRAC) & 0x3f; \
+ parent_rate = clk_get_rate(clk->parent); \
+ \
+ return SH_DIV((parent_rate >> PARENT_RATE_SHIFT) * 18, \
+ div, PARENT_RATE_SHIFT); \
+}
+
+_CLK_GET_RATE_REF(ref_cpu_clk, FRAC, CPU)
+_CLK_GET_RATE_REF(ref_emi_clk, FRAC, EMI)
+_CLK_GET_RATE_REF(ref_pix_clk, FRAC, PIX)
+_CLK_GET_RATE_REF(ref_io_clk, FRAC, IO)
+
+#define _DEFINE_CLOCK_REF(name, er, es) \
+ static struct clk name = { \
+ .enable_reg = CLKCTRL_BASE_ADDR + HW_CLKCTRL_##er, \
+ .enable_shift = BP_CLKCTRL_##er##_CLKGATE##es, \
+ .get_rate = name##_get_rate, \
+ .enable = _raw_clk_enable, \
+ .disable = _raw_clk_disable, \
+ .parent = &pll_clk, \
+ }
+
+_DEFINE_CLOCK_REF(ref_cpu_clk, FRAC, CPU);
+_DEFINE_CLOCK_REF(ref_emi_clk, FRAC, EMI);
+_DEFINE_CLOCK_REF(ref_pix_clk, FRAC, PIX);
+_DEFINE_CLOCK_REF(ref_io_clk, FRAC, IO);
+
+/*
+ * General clocks
+ *
+ * clk_get_rate
+ */
+static unsigned long rtc_clk_get_rate(struct clk *clk)
+{
+ /* ref_xtal_clk is implemented as the only parent */
+ return clk_get_rate(clk->parent) / 768;
+}
+
+static unsigned long clk32k_clk_get_rate(struct clk *clk)
+{
+ return clk->parent->get_rate(clk->parent) / 750;
+}
+
+#define _CLK_GET_RATE(name, rs) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ u32 reg, div; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \
+ \
+ if (clk->parent == &ref_xtal_clk) \
+ div = (reg & BM_CLKCTRL_##rs##_DIV_XTAL) >> \
+ BP_CLKCTRL_##rs##_DIV_XTAL; \
+ else \
+ div = (reg & BM_CLKCTRL_##rs##_DIV_##rs) >> \
+ BP_CLKCTRL_##rs##_DIV_##rs; \
+ \
+ if (!div) \
+ return -EINVAL; \
+ \
+ return clk_get_rate(clk->parent) / div; \
+}
+
+_CLK_GET_RATE(cpu_clk, CPU)
+_CLK_GET_RATE(emi_clk, EMI)
+
+#define _CLK_GET_RATE1(name, rs) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ u32 reg, div; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \
+ div = (reg & BM_CLKCTRL_##rs##_DIV) >> BP_CLKCTRL_##rs##_DIV; \
+ \
+ if (!div) \
+ return -EINVAL; \
+ \
+ return clk_get_rate(clk->parent) / div; \
+}
+
+_CLK_GET_RATE1(hbus_clk, HBUS)
+_CLK_GET_RATE1(xbus_clk, XBUS)
+_CLK_GET_RATE1(ssp_clk, SSP)
+_CLK_GET_RATE1(gpmi_clk, GPMI)
+_CLK_GET_RATE1(lcdif_clk, PIX)
+
+#define _CLK_GET_RATE_STUB(name) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ return clk_get_rate(clk->parent); \
+}
+
+_CLK_GET_RATE_STUB(uart_clk)
+_CLK_GET_RATE_STUB(audio_clk)
+_CLK_GET_RATE_STUB(pwm_clk)
+
+/*
+ * clk_set_rate
+ */
+static int cpu_clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ u32 reg, bm_busy, div_max, d, f, div, frac;
+ unsigned long diff, parent_rate, calc_rate;
+ int i;
+
+ parent_rate = clk_get_rate(clk->parent);
+
+ if (clk->parent == &ref_xtal_clk) {
+ div_max = BM_CLKCTRL_CPU_DIV_XTAL >> BP_CLKCTRL_CPU_DIV_XTAL;
+ bm_busy = BM_CLKCTRL_CPU_BUSY_REF_XTAL;
+ div = DIV_ROUND_UP(parent_rate, rate);
+ if (div == 0 || div > div_max)
+ return -EINVAL;
+ } else {
+ div_max = BM_CLKCTRL_CPU_DIV_CPU >> BP_CLKCTRL_CPU_DIV_CPU;
+ bm_busy = BM_CLKCTRL_CPU_BUSY_REF_CPU;
+ rate >>= PARENT_RATE_SHIFT;
+ parent_rate >>= PARENT_RATE_SHIFT;
+ diff = parent_rate;
+ div = frac = 1;
+ for (d = 1; d <= div_max; d++) {
+ f = parent_rate * 18 / d / rate;
+ if ((parent_rate * 18 / d) % rate)
+ f++;
+ if (f < 18 || f > 35)
+ continue;
+
+ calc_rate = parent_rate * 18 / f / d;
+ if (calc_rate > rate)
+ continue;
+
+ if (rate - calc_rate < diff) {
+ frac = f;
+ div = d;
+ diff = rate - calc_rate;
+ }
+
+ if (diff == 0)
+ break;
+ }
+
+ if (diff == parent_rate)
+ return -EINVAL;
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC);
+ reg &= ~BM_CLKCTRL_FRAC_CPUFRAC;
+ reg |= frac;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_FRAC);
+ }
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU);
+ reg &= ~BM_CLKCTRL_CPU_DIV_CPU;
+ reg |= div << BP_CLKCTRL_CPU_DIV_CPU;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU);
+
+ for (i = 10000; i; i--)
+ if (!(__raw_readl(CLKCTRL_BASE_ADDR +
+ HW_CLKCTRL_CPU) & bm_busy))
+ break;
+ if (!i) {
+ pr_err("%s: divider writing timeout\n", __func__);
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+#define _CLK_SET_RATE(name, dr) \
+static int name##_set_rate(struct clk *clk, unsigned long rate) \
+{ \
+ u32 reg, div_max, div; \
+ unsigned long parent_rate; \
+ int i; \
+ \
+ parent_rate = clk_get_rate(clk->parent); \
+ div_max = BM_CLKCTRL_##dr##_DIV >> BP_CLKCTRL_##dr##_DIV; \
+ \
+ div = DIV_ROUND_UP(parent_rate, rate); \
+ if (div == 0 || div > div_max) \
+ return -EINVAL; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##dr); \
+ reg &= ~BM_CLKCTRL_##dr##_DIV; \
+ reg |= div << BP_CLKCTRL_##dr##_DIV; \
+ if (reg | (1 << clk->enable_shift)) { \
+ pr_err("%s: clock is gated\n", __func__); \
+ return -EINVAL; \
+ } \
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##dr); \
+ \
+ for (i = 10000; i; i--) \
+ if (!(__raw_readl(CLKCTRL_BASE_ADDR + \
+ HW_CLKCTRL_##dr) & BM_CLKCTRL_##dr##_BUSY)) \
+ break; \
+ if (!i) { \
+ pr_err("%s: divider writing timeout\n", __func__); \
+ return -ETIMEDOUT; \
+ } \
+ \
+ return 0; \
+}
+
+_CLK_SET_RATE(xbus_clk, XBUS)
+_CLK_SET_RATE(ssp_clk, SSP)
+_CLK_SET_RATE(gpmi_clk, GPMI)
+_CLK_SET_RATE(lcdif_clk, PIX)
+
+#define _CLK_SET_RATE_STUB(name) \
+static int name##_set_rate(struct clk *clk, unsigned long rate) \
+{ \
+ return -EINVAL; \
+}
+
+_CLK_SET_RATE_STUB(emi_clk)
+_CLK_SET_RATE_STUB(uart_clk)
+_CLK_SET_RATE_STUB(audio_clk)
+_CLK_SET_RATE_STUB(pwm_clk)
+_CLK_SET_RATE_STUB(clk32k_clk)
+
+/*
+ * clk_set_parent
+ */
+#define _CLK_SET_PARENT(name, bit) \
+static int name##_set_parent(struct clk *clk, struct clk *parent) \
+{ \
+ if (parent != clk->parent) { \
+ __raw_writel(BM_CLKCTRL_CLKSEQ_BYPASS_##bit, \
+ HW_CLKCTRL_CLKSEQ_TOG); \
+ clk->parent = parent; \
+ } \
+ \
+ return 0; \
+}
+
+_CLK_SET_PARENT(cpu_clk, CPU)
+_CLK_SET_PARENT(emi_clk, EMI)
+_CLK_SET_PARENT(ssp_clk, SSP)
+_CLK_SET_PARENT(gpmi_clk, GPMI)
+_CLK_SET_PARENT(lcdif_clk, PIX)
+
+#define _CLK_SET_PARENT_STUB(name) \
+static int name##_set_parent(struct clk *clk, struct clk *parent) \
+{ \
+ if (parent != clk->parent) \
+ return -EINVAL; \
+ else \
+ return 0; \
+}
+
+_CLK_SET_PARENT_STUB(uart_clk)
+_CLK_SET_PARENT_STUB(audio_clk)
+_CLK_SET_PARENT_STUB(pwm_clk)
+_CLK_SET_PARENT_STUB(clk32k_clk)
+
+/*
+ * clk definition
+ */
+static struct clk cpu_clk = {
+ .get_rate = cpu_clk_get_rate,
+ .set_rate = cpu_clk_set_rate,
+ .set_parent = cpu_clk_set_parent,
+ .parent = &ref_cpu_clk,
+};
+
+static struct clk hbus_clk = {
+ .get_rate = hbus_clk_get_rate,
+ .parent = &cpu_clk,
+};
+
+static struct clk xbus_clk = {
+ .get_rate = xbus_clk_get_rate,
+ .set_rate = xbus_clk_set_rate,
+ .parent = &ref_xtal_clk,
+};
+
+static struct clk rtc_clk = {
+ .get_rate = rtc_clk_get_rate,
+ .parent = &ref_xtal_clk,
+};
+
+/* usb_clk gate is controlled in DIGCTRL other than CLKCTRL */
+static struct clk usb_clk = {
+ .enable_reg = DIGCTRL_BASE_ADDR,
+ .enable_shift = 2,
+ .enable = _raw_clk_enable,
+ .disable = _raw_clk_disable,
+ .parent = &pll_clk,
+};
+
+#define _DEFINE_CLOCK(name, er, es, p) \
+ static struct clk name = { \
+ .enable_reg = CLKCTRL_BASE_ADDR + HW_CLKCTRL_##er, \
+ .enable_shift = BP_CLKCTRL_##er##_##es, \
+ .get_rate = name##_get_rate, \
+ .set_rate = name##_set_rate, \
+ .set_parent = name##_set_parent, \
+ .enable = _raw_clk_enable, \
+ .disable = _raw_clk_disable, \
+ .parent = p, \
+ }
+
+_DEFINE_CLOCK(emi_clk, EMI, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(ssp_clk, SSP, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(gpmi_clk, GPMI, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(lcdif_clk, PIX, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(uart_clk, XTAL, UART_CLK_GATE, &ref_xtal_clk);
+_DEFINE_CLOCK(audio_clk, XTAL, FILT_CLK24M_GATE, &ref_xtal_clk);
+_DEFINE_CLOCK(pwm_clk, XTAL, PWM_CLK24M_GATE, &ref_xtal_clk);
+_DEFINE_CLOCK(clk32k_clk, XTAL, TIMROT_CLK32K_GATE, &ref_xtal_clk);
+
+#define _REGISTER_CLOCK(d, n, c) \
+ { \
+ .dev_id = d, \
+ .con_id = n, \
+ .clk = &c, \
+ },
+
+static struct clk_lookup lookups[] = {
+ _REGISTER_CLOCK("mxs-duart.0", NULL, uart_clk)
+ _REGISTER_CLOCK("rtc", NULL, rtc_clk)
+ _REGISTER_CLOCK(NULL, "hclk", hbus_clk)
+ _REGISTER_CLOCK(NULL, "xclk", xbus_clk)
+ _REGISTER_CLOCK(NULL, "usb", usb_clk)
+ _REGISTER_CLOCK(NULL, "audio", audio_clk)
+ _REGISTER_CLOCK(NULL, "pwm", pwm_clk)
+};
+
+static int clk_misc_init(void)
+{
+ u32 reg;
+ int i;
+
+ /* Fix up parent per register setting */
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_CLKSEQ);
+ cpu_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_CPU) ?
+ &ref_xtal_clk : &ref_cpu_clk;
+ emi_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_EMI) ?
+ &ref_xtal_clk : &ref_emi_clk;
+ ssp_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_SSP) ?
+ &ref_xtal_clk : &ref_io_clk;
+ gpmi_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_GPMI) ?
+ &ref_xtal_clk : &ref_io_clk;
+ lcdif_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_PIX) ?
+ &ref_xtal_clk : &ref_pix_clk;
+
+ /* Use int div over frac when both are available */
+ __raw_writel(BM_CLKCTRL_CPU_DIV_XTAL_FRAC_EN,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU_CLR);
+ __raw_writel(BM_CLKCTRL_CPU_DIV_CPU_FRAC_EN,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU_CLR);
+ __raw_writel(BM_CLKCTRL_HBUS_DIV_FRAC_EN,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS_CLR);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_XBUS);
+ reg &= ~BM_CLKCTRL_XBUS_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_XBUS);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP);
+ reg &= ~BM_CLKCTRL_SSP_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_GPMI);
+ reg &= ~BM_CLKCTRL_GPMI_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_GPMI);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_PIX);
+ reg &= ~BM_CLKCTRL_PIX_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_PIX);
+
+ /*
+ * Set safe hbus clock divider. A divider of 3 ensure that
+ * the Vddd voltage required for the cpu clock is sufficiently
+ * high for the hbus clock.
+ */
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS);
+ reg &= BM_CLKCTRL_HBUS_DIV;
+ reg |= 3 << BP_CLKCTRL_HBUS_DIV;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS);
+
+ for (i = 10000; i; i--)
+ if (!(__raw_readl(CLKCTRL_BASE_ADDR +
+ HW_CLKCTRL_HBUS) & BM_CLKCTRL_HBUS_BUSY))
+ break;
+ if (!i) {
+ pr_err("%s: divider writing timeout\n", __func__);
+ return -ETIMEDOUT;
+ }
+
+ /* Gate off cpu clock in WFI for power saving */
+ __raw_writel(BM_CLKCTRL_CPU_INTERRUPT_WAIT,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU_SET);
+
+ return 0;
+}
+
+int __init mx23_clocks_init(void)
+{
+ clk_misc_init();
+
+ clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+ mxs_timer_init(&clk32k_clk, MX23_INT_TIMER0);
+
+ return 0;
+}
diff --git a/arch/arm/mach-mxs/clock-mx28.c b/arch/arm/mach-mxs/clock-mx28.c
new file mode 100644
index 0000000..6a10f4e
--- /dev/null
+++ b/arch/arm/mach-mxs/clock-mx28.c
@@ -0,0 +1,734 @@
+/*
+ * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/jiffies.h>
+
+#include <asm/clkdev.h>
+#include <asm/div64.h>
+
+#include <mach/mx28.h>
+#include <mach/common.h>
+#include <mach/clock.h>
+
+#include "regs-clkctrl-mx28.h"
+
+#define CLKCTRL_BASE_ADDR MX28_IO_ADDRESS(MX28_CLKCTRL_BASE_ADDR)
+#define DIGCTRL_BASE_ADDR MX28_IO_ADDRESS(MX28_DIGCTL_BASE_ADDR)
+
+#define PARENT_RATE_SHIFT 8
+
+static struct clk pll2_clk;
+static struct clk cpu_clk;
+static struct clk emi_clk;
+static struct clk saif0_clk;
+static struct clk saif1_clk;
+static struct clk clk32k_clk;
+
+static int _raw_clk_enable(struct clk *clk)
+{
+ u32 reg;
+
+ if (clk->enable_reg) {
+ reg = __raw_readl(clk->enable_reg);
+ reg &= ~(1 << clk->enable_shift);
+ __raw_writel(reg, clk->enable_reg);
+ }
+
+ return 0;
+}
+
+static void _raw_clk_disable(struct clk *clk)
+{
+ u32 reg;
+
+ if (clk->enable_reg) {
+ reg = __raw_readl(clk->enable_reg);
+ reg |= 1 << clk->enable_shift;
+ __raw_writel(reg, clk->enable_reg);
+ }
+}
+
+/*
+ * ref_xtal_clk
+ */
+static unsigned long ref_xtal_clk_get_rate(struct clk *clk)
+{
+ return 24000000;
+}
+
+static struct clk ref_xtal_clk = {
+ .get_rate = ref_xtal_clk_get_rate,
+};
+
+/*
+ * pll_clk
+ */
+static unsigned long pll0_clk_get_rate(struct clk *clk)
+{
+ return 480000000;
+}
+
+static unsigned long pll1_clk_get_rate(struct clk *clk)
+{
+ return 480000000;
+}
+
+static unsigned long pll2_clk_get_rate(struct clk *clk)
+{
+ return 50000000;
+}
+
+#define _CLK_ENABLE_PLL(name, r, g) \
+static int name##_enable(struct clk *clk) \
+{ \
+ __raw_writel(BM_CLKCTRL_##r##CTRL0_POWER, \
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_##r##CTRL0_SET); \
+ udelay(10); \
+ \
+ if (clk == &pll2_clk) \
+ __raw_writel(BM_CLKCTRL_##r##CTRL0_##g, \
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_##r##CTRL0_CLR); \
+ else \
+ __raw_writel(BM_CLKCTRL_##r##CTRL0_##g, \
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_##r##CTRL0_SET); \
+ \
+ return 0; \
+}
+
+_CLK_ENABLE_PLL(pll0_clk, PLL0, EN_USB_CLKS)
+_CLK_ENABLE_PLL(pll1_clk, PLL1, EN_USB_CLKS)
+_CLK_ENABLE_PLL(pll2_clk, PLL2, CLKGATE)
+
+#define _CLK_DISABLE_PLL(name, r, g) \
+static void name##_disable(struct clk *clk) \
+{ \
+ __raw_writel(BM_CLKCTRL_##r##CTRL0_POWER, \
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_##r##CTRL0_CLR); \
+ \
+ if (clk == &pll2_clk) \
+ __raw_writel(BM_CLKCTRL_##r##CTRL0_##g, \
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_##r##CTRL0_SET); \
+ else \
+ __raw_writel(BM_CLKCTRL_##r##CTRL0_##g, \
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_##r##CTRL0_CLR); \
+ \
+}
+
+_CLK_DISABLE_PLL(pll0_clk, PLL0, EN_USB_CLKS)
+_CLK_DISABLE_PLL(pll1_clk, PLL1, EN_USB_CLKS)
+_CLK_DISABLE_PLL(pll2_clk, PLL2, CLKGATE)
+
+#define _DEFINE_CLOCK_PLL(name) \
+ static struct clk name = { \
+ .get_rate = name##_get_rate, \
+ .enable = name##_enable, \
+ .disable = name##_disable, \
+ .parent = &ref_xtal_clk, \
+ }
+
+_DEFINE_CLOCK_PLL(pll0_clk);
+_DEFINE_CLOCK_PLL(pll1_clk);
+_DEFINE_CLOCK_PLL(pll2_clk);
+
+/*
+ * ref_clk
+ */
+#define _CLK_GET_RATE_REF(name, sr, ss) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ unsigned long parent_rate; \
+ u32 reg, div; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##sr); \
+ div = (reg >> BP_CLKCTRL_##sr##_##ss##FRAC) & 0x3f; \
+ parent_rate = clk_get_rate(clk->parent); \
+ \
+ return SH_DIV((parent_rate >> PARENT_RATE_SHIFT) * 18, \
+ div, PARENT_RATE_SHIFT); \
+}
+
+_CLK_GET_RATE_REF(ref_cpu_clk, FRAC0, CPU)
+_CLK_GET_RATE_REF(ref_emi_clk, FRAC0, EMI)
+_CLK_GET_RATE_REF(ref_io0_clk, FRAC0, IO0)
+_CLK_GET_RATE_REF(ref_io1_clk, FRAC0, IO1)
+_CLK_GET_RATE_REF(ref_pix_clk, FRAC1, PIX)
+_CLK_GET_RATE_REF(ref_gpmi_clk, FRAC1, GPMI)
+
+#define _DEFINE_CLOCK_REF(name, er, es) \
+ static struct clk name = { \
+ .enable_reg = CLKCTRL_BASE_ADDR + HW_CLKCTRL_##er, \
+ .enable_shift = BP_CLKCTRL_##er##_CLKGATE##es, \
+ .get_rate = name##_get_rate, \
+ .enable = _raw_clk_enable, \
+ .disable = _raw_clk_disable, \
+ .parent = &pll0_clk, \
+ }
+
+_DEFINE_CLOCK_REF(ref_cpu_clk, FRAC0, CPU);
+_DEFINE_CLOCK_REF(ref_emi_clk, FRAC0, EMI);
+_DEFINE_CLOCK_REF(ref_io0_clk, FRAC0, IO0);
+_DEFINE_CLOCK_REF(ref_io1_clk, FRAC0, IO1);
+_DEFINE_CLOCK_REF(ref_pix_clk, FRAC1, PIX);
+_DEFINE_CLOCK_REF(ref_gpmi_clk, FRAC1, GPMI);
+
+/*
+ * General clocks
+ *
+ * clk_get_rate
+ */
+static unsigned long lradc_clk_get_rate(struct clk *clk)
+{
+ return clk_get_rate(clk->parent) / 16;
+}
+
+static unsigned long rtc_clk_get_rate(struct clk *clk)
+{
+ /* ref_xtal_clk is implemented as the only parent */
+ return clk_get_rate(clk->parent) / 768;
+}
+
+static unsigned long clk32k_clk_get_rate(struct clk *clk)
+{
+ return clk->parent->get_rate(clk->parent) / 750;
+}
+
+static unsigned long spdif_clk_get_rate(struct clk *clk)
+{
+ return clk_get_rate(clk->parent) / 4;
+}
+
+#define _CLK_GET_RATE(name, rs) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ u32 reg, div; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \
+ \
+ if (clk->parent == &ref_xtal_clk) \
+ div = (reg & BM_CLKCTRL_##rs##_DIV_XTAL) >> \
+ BP_CLKCTRL_##rs##_DIV_XTAL; \
+ else \
+ div = (reg & BM_CLKCTRL_##rs##_DIV_##rs) >> \
+ BP_CLKCTRL_##rs##_DIV_##rs; \
+ \
+ if (!div) \
+ return -EINVAL; \
+ \
+ return clk_get_rate(clk->parent) / div; \
+}
+
+_CLK_GET_RATE(cpu_clk, CPU)
+_CLK_GET_RATE(emi_clk, EMI)
+
+#define _CLK_GET_RATE1(name, rs) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ u32 reg, div; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \
+ div = (reg & BM_CLKCTRL_##rs##_DIV) >> BP_CLKCTRL_##rs##_DIV; \
+ \
+ if (!div) \
+ return -EINVAL; \
+ \
+ if (clk == &saif0_clk || clk == &saif1_clk) \
+ return (clk_get_rate(clk->parent) >> 16 * div); \
+ else \
+ return clk_get_rate(clk->parent) / div; \
+}
+
+_CLK_GET_RATE1(hbus_clk, HBUS)
+_CLK_GET_RATE1(xbus_clk, XBUS)
+_CLK_GET_RATE1(ssp0_clk, SSP0)
+_CLK_GET_RATE1(ssp1_clk, SSP1)
+_CLK_GET_RATE1(ssp2_clk, SSP2)
+_CLK_GET_RATE1(ssp3_clk, SSP3)
+_CLK_GET_RATE1(gpmi_clk, GPMI)
+_CLK_GET_RATE1(lcdif_clk, DIS_LCDIF)
+_CLK_GET_RATE1(saif0_clk, SAIF0)
+_CLK_GET_RATE1(saif1_clk, SAIF1)
+
+#define _CLK_GET_RATE_STUB(name) \
+static unsigned long name##_get_rate(struct clk *clk) \
+{ \
+ return clk_get_rate(clk->parent); \
+}
+
+_CLK_GET_RATE_STUB(uart_clk)
+_CLK_GET_RATE_STUB(pwm_clk)
+_CLK_GET_RATE_STUB(can0_clk)
+_CLK_GET_RATE_STUB(can1_clk)
+_CLK_GET_RATE_STUB(fec_clk)
+
+/*
+ * clk_set_rate
+ */
+/* fool compiler */
+#define BM_CLKCTRL_CPU_DIV 0
+#define BP_CLKCTRL_CPU_DIV 0
+#define BM_CLKCTRL_CPU_BUSY 0
+
+#define _CLK_SET_RATE(name, dr, fr, fs) \
+static int name##_set_rate(struct clk *clk, unsigned long rate) \
+{ \
+ u32 reg, bm_busy, div_max, d, f, div, frac; \
+ unsigned long diff, parent_rate, calc_rate; \
+ int i; \
+ \
+ parent_rate = clk_get_rate(clk->parent); \
+ div_max = BM_CLKCTRL_##dr##_DIV >> BP_CLKCTRL_##dr##_DIV; \
+ bm_busy = BM_CLKCTRL_##dr##_BUSY; \
+ \
+ if (clk->parent == &ref_xtal_clk) { \
+ div = DIV_ROUND_UP(parent_rate, rate); \
+ if (clk == &cpu_clk) { \
+ div_max = BM_CLKCTRL_CPU_DIV_XTAL >> \
+ BP_CLKCTRL_CPU_DIV_XTAL; \
+ bm_busy = BM_CLKCTRL_CPU_BUSY_REF_XTAL; \
+ } \
+ if (div == 0 || div > div_max) \
+ return -EINVAL; \
+ } else { \
+ rate >>= PARENT_RATE_SHIFT; \
+ parent_rate >>= PARENT_RATE_SHIFT; \
+ diff = parent_rate; \
+ div = frac = 1; \
+ if (clk == &cpu_clk) { \
+ div_max = BM_CLKCTRL_CPU_DIV_CPU >> \
+ BP_CLKCTRL_CPU_DIV_CPU; \
+ bm_busy = BM_CLKCTRL_CPU_BUSY_REF_CPU; \
+ } \
+ for (d = 1; d <= div_max; d++) { \
+ f = parent_rate * 18 / d / rate; \
+ if ((parent_rate * 18 / d) % rate) \
+ f++; \
+ if (f < 18 || f > 35) \
+ continue; \
+ \
+ calc_rate = parent_rate * 18 / f / d; \
+ if (calc_rate > rate) \
+ continue; \
+ \
+ if (rate - calc_rate < diff) { \
+ frac = f; \
+ div = d; \
+ diff = rate - calc_rate; \
+ } \
+ \
+ if (diff == 0) \
+ break; \
+ } \
+ \
+ if (diff == parent_rate) \
+ return -EINVAL; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##fr); \
+ reg &= ~BM_CLKCTRL_##fr##_##fs##FRAC; \
+ reg |= frac; \
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##fr); \
+ } \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##dr); \
+ if (clk == &cpu_clk) { \
+ reg &= ~BM_CLKCTRL_CPU_DIV_CPU; \
+ reg |= div << BP_CLKCTRL_CPU_DIV_CPU; \
+ } else { \
+ reg &= ~BM_CLKCTRL_##dr##_DIV; \
+ reg |= div << BP_CLKCTRL_##dr##_DIV; \
+ if (reg | (1 << clk->enable_shift)) { \
+ pr_err("%s: clock is gated\n", __func__); \
+ return -EINVAL; \
+ } \
+ } \
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU); \
+ \
+ for (i = 10000; i; i--) \
+ if (!(__raw_readl(CLKCTRL_BASE_ADDR + \
+ HW_CLKCTRL_##dr) & bm_busy)) \
+ break; \
+ if (!i) { \
+ pr_err("%s: divider writing timeout\n", __func__); \
+ return -ETIMEDOUT; \
+ } \
+ \
+ return 0; \
+}
+
+_CLK_SET_RATE(cpu_clk, CPU, FRAC0, CPU)
+_CLK_SET_RATE(ssp0_clk, SSP0, FRAC0, IO0)
+_CLK_SET_RATE(ssp1_clk, SSP1, FRAC0, IO0)
+_CLK_SET_RATE(ssp2_clk, SSP2, FRAC0, IO1)
+_CLK_SET_RATE(ssp3_clk, SSP3, FRAC0, IO1)
+_CLK_SET_RATE(lcdif_clk, DIS_LCDIF, FRAC1, PIX)
+_CLK_SET_RATE(gpmi_clk, GPMI, FRAC1, GPMI)
+
+#define _CLK_SET_RATE1(name, dr) \
+static int name##_set_rate(struct clk *clk, unsigned long rate) \
+{ \
+ u32 reg, div_max, div; \
+ unsigned long parent_rate; \
+ int i; \
+ \
+ parent_rate = clk_get_rate(clk->parent); \
+ div_max = BM_CLKCTRL_##dr##_DIV >> BP_CLKCTRL_##dr##_DIV; \
+ \
+ div = DIV_ROUND_UP(parent_rate, rate); \
+ if (div == 0 || div > div_max) \
+ return -EINVAL; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##dr); \
+ reg &= ~BM_CLKCTRL_##dr##_DIV; \
+ reg |= div << BP_CLKCTRL_##dr##_DIV; \
+ if (reg | (1 << clk->enable_shift)) { \
+ pr_err("%s: clock is gated\n", __func__); \
+ return -EINVAL; \
+ } \
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##dr); \
+ \
+ for (i = 10000; i; i--) \
+ if (!(__raw_readl(CLKCTRL_BASE_ADDR + \
+ HW_CLKCTRL_##dr) & BM_CLKCTRL_##dr##_BUSY)) \
+ break; \
+ if (!i) { \
+ pr_err("%s: divider writing timeout\n", __func__); \
+ return -ETIMEDOUT; \
+ } \
+ \
+ return 0; \
+}
+
+_CLK_SET_RATE1(xbus_clk, XBUS)
+
+/* saif clock uses 16 bits frac div */
+#define _CLK_SET_RATE_SAIF(name, rs) \
+static int name##_set_rate(struct clk *clk, unsigned long rate) \
+{ \
+ u16 div; \
+ u32 reg; \
+ u64 lrate; \
+ unsigned long parent_rate; \
+ int i; \
+ \
+ parent_rate = clk_get_rate(clk->parent); \
+ if (rate > parent_rate) \
+ return -EINVAL; \
+ \
+ lrate = (u64)rate << 16; \
+ do_div(lrate, parent_rate); \
+ div = (u16)lrate; \
+ \
+ if (!div) \
+ return -EINVAL; \
+ \
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \
+ reg &= ~BM_CLKCTRL_##rs##_DIV; \
+ reg |= div << BP_CLKCTRL_##rs##_DIV; \
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_##rs); \
+ \
+ for (i = 10000; i; i--) \
+ if (!(__raw_readl(CLKCTRL_BASE_ADDR + \
+ HW_CLKCTRL_##rs) & BM_CLKCTRL_##rs##_BUSY)) \
+ break; \
+ if (!i) { \
+ pr_err("%s: divider writing timeout\n", __func__); \
+ return -ETIMEDOUT; \
+ } \
+ \
+ return 0; \
+}
+
+_CLK_SET_RATE_SAIF(saif0_clk, SAIF0)
+_CLK_SET_RATE_SAIF(saif1_clk, SAIF1)
+
+#define _CLK_SET_RATE_STUB(name) \
+static int name##_set_rate(struct clk *clk, unsigned long rate) \
+{ \
+ return -EINVAL; \
+}
+
+_CLK_SET_RATE_STUB(emi_clk)
+_CLK_SET_RATE_STUB(uart_clk)
+_CLK_SET_RATE_STUB(pwm_clk)
+_CLK_SET_RATE_STUB(spdif_clk)
+_CLK_SET_RATE_STUB(clk32k_clk)
+_CLK_SET_RATE_STUB(can0_clk)
+_CLK_SET_RATE_STUB(can1_clk)
+_CLK_SET_RATE_STUB(fec_clk)
+
+/*
+ * clk_set_parent
+ */
+#define _CLK_SET_PARENT(name, bit) \
+static int name##_set_parent(struct clk *clk, struct clk *parent) \
+{ \
+ if (parent != clk->parent) { \
+ __raw_writel(BM_CLKCTRL_CLKSEQ_BYPASS_##bit, \
+ HW_CLKCTRL_CLKSEQ_TOG); \
+ clk->parent = parent; \
+ } \
+ \
+ return 0; \
+}
+
+_CLK_SET_PARENT(cpu_clk, CPU)
+_CLK_SET_PARENT(emi_clk, EMI)
+_CLK_SET_PARENT(ssp0_clk, SSP0)
+_CLK_SET_PARENT(ssp1_clk, SSP1)
+_CLK_SET_PARENT(ssp2_clk, SSP2)
+_CLK_SET_PARENT(ssp3_clk, SSP3)
+_CLK_SET_PARENT(lcdif_clk, DIS_LCDIF)
+_CLK_SET_PARENT(gpmi_clk, GPMI)
+_CLK_SET_PARENT(saif0_clk, SAIF0)
+_CLK_SET_PARENT(saif1_clk, SAIF1)
+
+#define _CLK_SET_PARENT_STUB(name) \
+static int name##_set_parent(struct clk *clk, struct clk *parent) \
+{ \
+ if (parent != clk->parent) \
+ return -EINVAL; \
+ else \
+ return 0; \
+}
+
+_CLK_SET_PARENT_STUB(pwm_clk)
+_CLK_SET_PARENT_STUB(uart_clk)
+_CLK_SET_PARENT_STUB(clk32k_clk)
+_CLK_SET_PARENT_STUB(spdif_clk)
+_CLK_SET_PARENT_STUB(fec_clk)
+_CLK_SET_PARENT_STUB(can0_clk)
+_CLK_SET_PARENT_STUB(can1_clk)
+
+/*
+ * clk definition
+ */
+static struct clk cpu_clk = {
+ .get_rate = cpu_clk_get_rate,
+ .set_rate = cpu_clk_set_rate,
+ .set_parent = cpu_clk_set_parent,
+ .parent = &ref_cpu_clk,
+};
+
+static struct clk hbus_clk = {
+ .get_rate = hbus_clk_get_rate,
+ .parent = &cpu_clk,
+};
+
+static struct clk xbus_clk = {
+ .get_rate = xbus_clk_get_rate,
+ .set_rate = xbus_clk_set_rate,
+ .parent = &ref_xtal_clk,
+};
+
+static struct clk lradc_clk = {
+ .get_rate = lradc_clk_get_rate,
+ .parent = &clk32k_clk,
+};
+
+static struct clk rtc_clk = {
+ .get_rate = rtc_clk_get_rate,
+ .parent = &ref_xtal_clk,
+};
+
+/* usb_clk gate is controlled in DIGCTRL other than CLKCTRL */
+static struct clk usb0_clk = {
+ .enable_reg = DIGCTRL_BASE_ADDR,
+ .enable_shift = 2,
+ .enable = _raw_clk_enable,
+ .disable = _raw_clk_disable,
+ .parent = &pll0_clk,
+};
+
+static struct clk usb1_clk = {
+ .enable_reg = DIGCTRL_BASE_ADDR,
+ .enable_shift = 16,
+ .enable = _raw_clk_enable,
+ .disable = _raw_clk_disable,
+ .parent = &pll1_clk,
+};
+
+#define _DEFINE_CLOCK(name, er, es, p) \
+ static struct clk name = { \
+ .enable_reg = CLKCTRL_BASE_ADDR + HW_CLKCTRL_##er, \
+ .enable_shift = BP_CLKCTRL_##er##_##es, \
+ .get_rate = name##_get_rate, \
+ .set_rate = name##_set_rate, \
+ .set_parent = name##_set_parent, \
+ .enable = _raw_clk_enable, \
+ .disable = _raw_clk_disable, \
+ .parent = p, \
+ }
+
+_DEFINE_CLOCK(emi_clk, EMI, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(ssp0_clk, SSP0, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(ssp1_clk, SSP1, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(ssp2_clk, SSP2, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(ssp3_clk, SSP3, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(lcdif_clk, DIS_LCDIF, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(gpmi_clk, GPMI, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(saif0_clk, SAIF0, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(saif1_clk, SAIF1, CLKGATE, &ref_xtal_clk);
+_DEFINE_CLOCK(can0_clk, FLEXCAN, STOP_CAN0, &ref_xtal_clk);
+_DEFINE_CLOCK(can1_clk, FLEXCAN, STOP_CAN1, &ref_xtal_clk);
+_DEFINE_CLOCK(pwm_clk, XTAL, PWM_CLK24M_GATE, &ref_xtal_clk);
+_DEFINE_CLOCK(uart_clk, XTAL, UART_CLK_GATE, &ref_xtal_clk);
+_DEFINE_CLOCK(clk32k_clk, XTAL, TIMROT_CLK32K_GATE, &ref_xtal_clk);
+_DEFINE_CLOCK(spdif_clk, SPDIF, CLKGATE, &pll0_clk);
+_DEFINE_CLOCK(fec_clk, ENET, DISABLE, &hbus_clk);
+
+#define _REGISTER_CLOCK(d, n, c) \
+ { \
+ .dev_id = d, \
+ .con_id = n, \
+ .clk = &c, \
+ },
+
+static struct clk_lookup lookups[] = {
+ _REGISTER_CLOCK("mxs-duart.0", NULL, uart_clk)
+ _REGISTER_CLOCK("fec.0", NULL, fec_clk)
+ _REGISTER_CLOCK("rtc", NULL, rtc_clk)
+ _REGISTER_CLOCK("pll2", NULL, pll2_clk)
+ _REGISTER_CLOCK(NULL, "hclk", hbus_clk)
+ _REGISTER_CLOCK(NULL, "xclk", xbus_clk)
+ _REGISTER_CLOCK(NULL, "can0", can0_clk)
+ _REGISTER_CLOCK(NULL, "can1", can1_clk)
+ _REGISTER_CLOCK(NULL, "usb0", usb0_clk)
+ _REGISTER_CLOCK(NULL, "usb1", usb1_clk)
+ _REGISTER_CLOCK(NULL, "pwm", pwm_clk)
+ _REGISTER_CLOCK(NULL, "lradc", lradc_clk)
+ _REGISTER_CLOCK(NULL, "spdif", spdif_clk)
+};
+
+static int clk_misc_init(void)
+{
+ u32 reg;
+ int i;
+
+ /* Fix up parent per register setting */
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_CLKSEQ);
+ cpu_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_CPU) ?
+ &ref_xtal_clk : &ref_cpu_clk;
+ emi_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_EMI) ?
+ &ref_xtal_clk : &ref_emi_clk;
+ ssp0_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_SSP0) ?
+ &ref_xtal_clk : &ref_io0_clk;
+ ssp1_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_SSP1) ?
+ &ref_xtal_clk : &ref_io0_clk;
+ ssp2_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_SSP2) ?
+ &ref_xtal_clk : &ref_io1_clk;
+ ssp3_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_SSP3) ?
+ &ref_xtal_clk : &ref_io1_clk;
+ lcdif_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_DIS_LCDIF) ?
+ &ref_xtal_clk : &ref_pix_clk;
+ gpmi_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_GPMI) ?
+ &ref_xtal_clk : &ref_gpmi_clk;
+ saif0_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_SAIF0) ?
+ &ref_xtal_clk : &pll0_clk;
+ saif1_clk.parent = (reg & BM_CLKCTRL_CLKSEQ_BYPASS_SAIF1) ?
+ &ref_xtal_clk : &pll0_clk;
+
+ /* Use int div over frac when both are available */
+ __raw_writel(BM_CLKCTRL_CPU_DIV_XTAL_FRAC_EN,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU_CLR);
+ __raw_writel(BM_CLKCTRL_CPU_DIV_CPU_FRAC_EN,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU_CLR);
+ __raw_writel(BM_CLKCTRL_HBUS_DIV_FRAC_EN,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS_CLR);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_XBUS);
+ reg &= ~BM_CLKCTRL_XBUS_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_XBUS);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP0);
+ reg &= ~BM_CLKCTRL_SSP0_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP0);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP1);
+ reg &= ~BM_CLKCTRL_SSP1_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP1);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP2);
+ reg &= ~BM_CLKCTRL_SSP2_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP2);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP3);
+ reg &= ~BM_CLKCTRL_SSP3_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_SSP3);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_GPMI);
+ reg &= ~BM_CLKCTRL_GPMI_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_GPMI);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_DIS_LCDIF);
+ reg &= ~BM_CLKCTRL_DIS_LCDIF_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_DIS_LCDIF);
+
+ /* SAIF has to use frac div for functional operation */
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_SAIF0);
+ reg &= ~BM_CLKCTRL_SAIF0_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_SAIF0);
+
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_SAIF1);
+ reg &= ~BM_CLKCTRL_SAIF1_DIV_FRAC_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_SAIF1);
+
+ /*
+ * Set safe hbus clock divider. A divider of 3 ensure that
+ * the Vddd voltage required for the cpu clock is sufficiently
+ * high for the hbus clock.
+ */
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS);
+ reg &= BM_CLKCTRL_HBUS_DIV;
+ reg |= 3 << BP_CLKCTRL_HBUS_DIV;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_HBUS);
+
+ for (i = 10000; i; i--)
+ if (!(__raw_readl(CLKCTRL_BASE_ADDR +
+ HW_CLKCTRL_HBUS) & BM_CLKCTRL_HBUS_ASM_BUSY))
+ break;
+ if (!i) {
+ pr_err("%s: divider writing timeout\n", __func__);
+ return -ETIMEDOUT;
+ }
+
+ /* Gate off cpu clock in WFI for power saving */
+ __raw_writel(BM_CLKCTRL_CPU_INTERRUPT_WAIT,
+ CLKCTRL_BASE_ADDR + HW_CLKCTRL_CPU_SET);
+
+ /* Extra fec clock setting */
+ reg = __raw_readl(CLKCTRL_BASE_ADDR + HW_CLKCTRL_ENET);
+ reg &= ~BM_CLKCTRL_ENET_SLEEP;
+ reg |= BM_CLKCTRL_ENET_CLK_OUT_EN;
+ __raw_writel(reg, CLKCTRL_BASE_ADDR + HW_CLKCTRL_ENET);
+
+ return 0;
+}
+
+int __init mx28_clocks_init(void)
+{
+ clk_misc_init();
+
+ clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+ mxs_timer_init(&clk32k_clk, MX28_INT_TIMER0);
+
+ return 0;
+}
diff --git a/arch/arm/mach-mxs/clock.c b/arch/arm/mach-mxs/clock.c
new file mode 100644
index 0000000..e7d2269
--- /dev/null
+++ b/arch/arm/mach-mxs/clock.c
@@ -0,0 +1,200 @@
+/*
+ * Based on arch/arm/plat-omap/clock.c
+ *
+ * Copyright (C) 2004 - 2005 Nokia corporation
+ * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
+ * Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com>
+ * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel at pengutronix.de
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+/* #define DEBUG */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/proc_fs.h>
+#include <linux/semaphore.h>
+#include <linux/string.h>
+
+#include <mach/clock.h>
+
+static LIST_HEAD(clocks);
+static DEFINE_MUTEX(clocks_mutex);
+
+/*-------------------------------------------------------------------------
+ * Standard clock functions defined in include/linux/clk.h
+ *-------------------------------------------------------------------------*/
+
+static void __clk_disable(struct clk *clk)
+{
+ if (clk == NULL || IS_ERR(clk))
+ return;
+ WARN_ON(!clk->usecount);
+
+ if (!(--clk->usecount)) {
+ if (clk->disable)
+ clk->disable(clk);
+ __clk_disable(clk->parent);
+ __clk_disable(clk->secondary);
+ }
+}
+
+static int __clk_enable(struct clk *clk)
+{
+ if (clk == NULL || IS_ERR(clk))
+ return -EINVAL;
+
+ if (clk->usecount++ == 0) {
+ __clk_enable(clk->parent);
+ __clk_enable(clk->secondary);
+
+ if (clk->enable)
+ clk->enable(clk);
+ }
+ return 0;
+}
+
+/* This function increments the reference count on the clock and enables the
+ * clock if not already enabled. The parent clock tree is recursively enabled
+ */
+int clk_enable(struct clk *clk)
+{
+ int ret = 0;
+
+ if (clk == NULL || IS_ERR(clk))
+ return -EINVAL;
+
+ mutex_lock(&clocks_mutex);
+ ret = __clk_enable(clk);
+ mutex_unlock(&clocks_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL(clk_enable);
+
+/* This function decrements the reference count on the clock and disables
+ * the clock when reference count is 0. The parent clock tree is
+ * recursively disabled
+ */
+void clk_disable(struct clk *clk)
+{
+ if (clk == NULL || IS_ERR(clk))
+ return;
+
+ mutex_lock(&clocks_mutex);
+ __clk_disable(clk);
+ mutex_unlock(&clocks_mutex);
+}
+EXPORT_SYMBOL(clk_disable);
+
+/* Retrieve the *current* clock rate. If the clock itself
+ * does not provide a special calculation routine, ask
+ * its parent and so on, until one is able to return
+ * a valid clock rate
+ */
+unsigned long clk_get_rate(struct clk *clk)
+{
+ if (clk == NULL || IS_ERR(clk))
+ return 0UL;
+
+ if (clk->get_rate)
+ return clk->get_rate(clk);
+
+ return clk_get_rate(clk->parent);
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+/* Round the requested clock rate to the nearest supported
+ * rate that is less than or equal to the requested rate.
+ * This is dependent on the clock's current parent.
+ */
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk == NULL || IS_ERR(clk) || !clk->round_rate)
+ return 0;
+
+ return clk->round_rate(clk, rate);
+}
+EXPORT_SYMBOL(clk_round_rate);
+
+/* Set the clock to the requested clock rate. The rate must
+ * match a supported rate exactly based on what clk_round_rate returns
+ */
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ int ret = -EINVAL;
+
+ if (clk == NULL || IS_ERR(clk) || clk->set_rate == NULL || rate == 0)
+ return ret;
+
+ mutex_lock(&clocks_mutex);
+ ret = clk->set_rate(clk, rate);
+ mutex_unlock(&clocks_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL(clk_set_rate);
+
+/* Set the clock's parent to another clock source */
+int clk_set_parent(struct clk *clk, struct clk *parent)
+{
+ int ret = -EINVAL;
+ struct clk *old;
+
+ if (clk == NULL || IS_ERR(clk) || parent == NULL ||
+ IS_ERR(parent) || clk->set_parent == NULL)
+ return ret;
+
+ if (clk->usecount)
+ clk_enable(parent);
+
+ mutex_lock(&clocks_mutex);
+ ret = clk->set_parent(clk, parent);
+ if (ret == 0) {
+ old = clk->parent;
+ clk->parent = parent;
+ } else {
+ old = parent;
+ }
+ mutex_unlock(&clocks_mutex);
+
+ if (clk->usecount)
+ clk_disable(old);
+
+ return ret;
+}
+EXPORT_SYMBOL(clk_set_parent);
+
+/* Retrieve the clock's parent clock source */
+struct clk *clk_get_parent(struct clk *clk)
+{
+ struct clk *ret = NULL;
+
+ if (clk == NULL || IS_ERR(clk))
+ return ret;
+
+ return clk->parent;
+}
+EXPORT_SYMBOL(clk_get_parent);
diff --git a/arch/arm/mach-mxs/include/mach/clkdev.h b/arch/arm/mach-mxs/include/mach/clkdev.h
new file mode 100644
index 0000000..3a8f2e3
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/clkdev.h
@@ -0,0 +1,7 @@
+#ifndef __MACH_MXS_CLKDEV_H__
+#define __MACH_MXS_CLKDEV_H__
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif
diff --git a/arch/arm/mach-mxs/include/mach/clock.h b/arch/arm/mach-mxs/include/mach/clock.h
new file mode 100644
index 0000000..041e276
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/clock.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Juergen Beisert, kernel at pengutronix.de
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#ifndef __MACH_MXS_CLOCK_H__
+#define __MACH_MXS_CLOCK_H__
+
+#ifndef __ASSEMBLY__
+#include <linux/list.h>
+
+struct module;
+
+struct clk {
+ int id;
+ /* Source clock this clk depends on */
+ struct clk *parent;
+ /* Secondary clock to enable/disable with this clock */
+ struct clk *secondary;
+ /* Reference count of clock enable/disable */
+ __s8 usecount;
+ /* Register bit position for clock's enable/disable control. */
+ u8 enable_shift;
+ /* Register address for clock's enable/disable control. */
+ void __iomem *enable_reg;
+ u32 flags;
+ /* get the current clock rate (always a fresh value) */
+ unsigned long (*get_rate) (struct clk *);
+ /* Function ptr to set the clock to a new rate. The rate must match a
+ supported rate returned from round_rate. Leave blank if clock is not
+ programmable */
+ int (*set_rate) (struct clk *, unsigned long);
+ /* Function ptr to round the requested clock rate to the nearest
+ supported rate that is less than or equal to the requested rate. */
+ unsigned long (*round_rate) (struct clk *, unsigned long);
+ /* Function ptr to enable the clock. Leave blank if clock can not
+ be gated. */
+ int (*enable) (struct clk *);
+ /* Function ptr to disable the clock. Leave blank if clock can not
+ be gated. */
+ void (*disable) (struct clk *);
+ /* Function ptr to set the parent clock of the clock. */
+ int (*set_parent) (struct clk *, struct clk *);
+};
+
+int clk_register(struct clk *clk);
+void clk_unregister(struct clk *clk);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __MACH_MXS_CLOCK_H__ */
diff --git a/arch/arm/mach-mxs/regs-clkctrl-mx23.h b/arch/arm/mach-mxs/regs-clkctrl-mx23.h
new file mode 100644
index 0000000..dbc0474
--- /dev/null
+++ b/arch/arm/mach-mxs/regs-clkctrl-mx23.h
@@ -0,0 +1,455 @@
+/*
+ * Freescale CLKCTRL Register Definitions
+ *
+ * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
+ * Copyright 2008-2010 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This file is created by xml file. Don't Edit it.
+ *
+ * Xml Revision: 1.48
+ * Template revision: 26195
+ */
+
+#ifndef __REGS_CLKCTRL_MX23_H__
+#define __REGS_CLKCTRL_MX23_H__
+
+
+#define HW_CLKCTRL_PLLCTRL0 (0x00000000)
+#define HW_CLKCTRL_PLLCTRL0_SET (0x00000004)
+#define HW_CLKCTRL_PLLCTRL0_CLR (0x00000008)
+#define HW_CLKCTRL_PLLCTRL0_TOG (0x0000000c)
+
+#define BP_CLKCTRL_PLLCTRL0_RSRVD6 30
+#define BM_CLKCTRL_PLLCTRL0_RSRVD6 0xC0000000
+#define BF_CLKCTRL_PLLCTRL0_RSRVD6(v) \
+ (((v) << 30) & BM_CLKCTRL_PLLCTRL0_RSRVD6)
+#define BP_CLKCTRL_PLLCTRL0_LFR_SEL 28
+#define BM_CLKCTRL_PLLCTRL0_LFR_SEL 0x30000000
+#define BF_CLKCTRL_PLLCTRL0_LFR_SEL(v) \
+ (((v) << 28) & BM_CLKCTRL_PLLCTRL0_LFR_SEL)
+#define BV_CLKCTRL_PLLCTRL0_LFR_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLLCTRL0_LFR_SEL__TIMES_2 0x1
+#define BV_CLKCTRL_PLLCTRL0_LFR_SEL__TIMES_05 0x2
+#define BV_CLKCTRL_PLLCTRL0_LFR_SEL__UNDEFINED 0x3
+#define BP_CLKCTRL_PLLCTRL0_RSRVD5 26
+#define BM_CLKCTRL_PLLCTRL0_RSRVD5 0x0C000000
+#define BF_CLKCTRL_PLLCTRL0_RSRVD5(v) \
+ (((v) << 26) & BM_CLKCTRL_PLLCTRL0_RSRVD5)
+#define BP_CLKCTRL_PLLCTRL0_CP_SEL 24
+#define BM_CLKCTRL_PLLCTRL0_CP_SEL 0x03000000
+#define BF_CLKCTRL_PLLCTRL0_CP_SEL(v) \
+ (((v) << 24) & BM_CLKCTRL_PLLCTRL0_CP_SEL)
+#define BV_CLKCTRL_PLLCTRL0_CP_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLLCTRL0_CP_SEL__TIMES_2 0x1
+#define BV_CLKCTRL_PLLCTRL0_CP_SEL__TIMES_05 0x2
+#define BV_CLKCTRL_PLLCTRL0_CP_SEL__UNDEFINED 0x3
+#define BP_CLKCTRL_PLLCTRL0_RSRVD4 22
+#define BM_CLKCTRL_PLLCTRL0_RSRVD4 0x00C00000
+#define BF_CLKCTRL_PLLCTRL0_RSRVD4(v) \
+ (((v) << 22) & BM_CLKCTRL_PLLCTRL0_RSRVD4)
+#define BP_CLKCTRL_PLLCTRL0_DIV_SEL 20
+#define BM_CLKCTRL_PLLCTRL0_DIV_SEL 0x00300000
+#define BF_CLKCTRL_PLLCTRL0_DIV_SEL(v) \
+ (((v) << 20) & BM_CLKCTRL_PLLCTRL0_DIV_SEL)
+#define BV_CLKCTRL_PLLCTRL0_DIV_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLLCTRL0_DIV_SEL__LOWER 0x1
+#define BV_CLKCTRL_PLLCTRL0_DIV_SEL__LOWEST 0x2
+#define BV_CLKCTRL_PLLCTRL0_DIV_SEL__UNDEFINED 0x3
+#define BM_CLKCTRL_PLLCTRL0_RSRVD3 0x00080000
+#define BM_CLKCTRL_PLLCTRL0_EN_USB_CLKS 0x00040000
+#define BM_CLKCTRL_PLLCTRL0_RSRVD2 0x00020000
+#define BM_CLKCTRL_PLLCTRL0_POWER 0x00010000
+#define BP_CLKCTRL_PLLCTRL0_RSRVD1 0
+#define BM_CLKCTRL_PLLCTRL0_RSRVD1 0x0000FFFF
+#define BF_CLKCTRL_PLLCTRL0_RSRVD1(v) \
+ (((v) << 0) & BM_CLKCTRL_PLLCTRL0_RSRVD1)
+
+#define HW_CLKCTRL_PLLCTRL1 (0x00000010)
+
+#define BM_CLKCTRL_PLLCTRL1_LOCK 0x80000000
+#define BM_CLKCTRL_PLLCTRL1_FORCE_LOCK 0x40000000
+#define BP_CLKCTRL_PLLCTRL1_RSRVD1 16
+#define BM_CLKCTRL_PLLCTRL1_RSRVD1 0x3FFF0000
+#define BF_CLKCTRL_PLLCTRL1_RSRVD1(v) \
+ (((v) << 16) & BM_CLKCTRL_PLLCTRL1_RSRVD1)
+#define BP_CLKCTRL_PLLCTRL1_LOCK_COUNT 0
+#define BM_CLKCTRL_PLLCTRL1_LOCK_COUNT 0x0000FFFF
+#define BF_CLKCTRL_PLLCTRL1_LOCK_COUNT(v) \
+ (((v) << 0) & BM_CLKCTRL_PLLCTRL1_LOCK_COUNT)
+
+#define HW_CLKCTRL_CPU (0x00000020)
+#define HW_CLKCTRL_CPU_SET (0x00000024)
+#define HW_CLKCTRL_CPU_CLR (0x00000028)
+#define HW_CLKCTRL_CPU_TOG (0x0000002c)
+
+#define BP_CLKCTRL_CPU_RSRVD5 30
+#define BM_CLKCTRL_CPU_RSRVD5 0xC0000000
+#define BF_CLKCTRL_CPU_RSRVD5(v) \
+ (((v) << 30) & BM_CLKCTRL_CPU_RSRVD5)
+#define BM_CLKCTRL_CPU_BUSY_REF_XTAL 0x20000000
+#define BM_CLKCTRL_CPU_BUSY_REF_CPU 0x10000000
+#define BM_CLKCTRL_CPU_RSRVD4 0x08000000
+#define BM_CLKCTRL_CPU_DIV_XTAL_FRAC_EN 0x04000000
+#define BP_CLKCTRL_CPU_DIV_XTAL 16
+#define BM_CLKCTRL_CPU_DIV_XTAL 0x03FF0000
+#define BF_CLKCTRL_CPU_DIV_XTAL(v) \
+ (((v) << 16) & BM_CLKCTRL_CPU_DIV_XTAL)
+#define BP_CLKCTRL_CPU_RSRVD3 13
+#define BM_CLKCTRL_CPU_RSRVD3 0x0000E000
+#define BF_CLKCTRL_CPU_RSRVD3(v) \
+ (((v) << 13) & BM_CLKCTRL_CPU_RSRVD3)
+#define BM_CLKCTRL_CPU_INTERRUPT_WAIT 0x00001000
+#define BM_CLKCTRL_CPU_RSRVD2 0x00000800
+#define BM_CLKCTRL_CPU_DIV_CPU_FRAC_EN 0x00000400
+#define BP_CLKCTRL_CPU_RSRVD1 6
+#define BM_CLKCTRL_CPU_RSRVD1 0x000003C0
+#define BF_CLKCTRL_CPU_RSRVD1(v) \
+ (((v) << 6) & BM_CLKCTRL_CPU_RSRVD1)
+#define BP_CLKCTRL_CPU_DIV_CPU 0
+#define BM_CLKCTRL_CPU_DIV_CPU 0x0000003F
+#define BF_CLKCTRL_CPU_DIV_CPU(v) \
+ (((v) << 0) & BM_CLKCTRL_CPU_DIV_CPU)
+
+#define HW_CLKCTRL_HBUS (0x00000030)
+#define HW_CLKCTRL_HBUS_SET (0x00000034)
+#define HW_CLKCTRL_HBUS_CLR (0x00000038)
+#define HW_CLKCTRL_HBUS_TOG (0x0000003c)
+
+#define BP_CLKCTRL_HBUS_RSRVD4 30
+#define BM_CLKCTRL_HBUS_RSRVD4 0xC0000000
+#define BF_CLKCTRL_HBUS_RSRVD4(v) \
+ (((v) << 30) & BM_CLKCTRL_HBUS_RSRVD4)
+#define BM_CLKCTRL_HBUS_BUSY 0x20000000
+#define BM_CLKCTRL_HBUS_DCP_AS_ENABLE 0x10000000
+#define BM_CLKCTRL_HBUS_PXP_AS_ENABLE 0x08000000
+#define BM_CLKCTRL_HBUS_APBHDMA_AS_ENABLE 0x04000000
+#define BM_CLKCTRL_HBUS_APBXDMA_AS_ENABLE 0x02000000
+#define BM_CLKCTRL_HBUS_TRAFFIC_JAM_AS_ENABLE 0x01000000
+#define BM_CLKCTRL_HBUS_TRAFFIC_AS_ENABLE 0x00800000
+#define BM_CLKCTRL_HBUS_CPU_DATA_AS_ENABLE 0x00400000
+#define BM_CLKCTRL_HBUS_CPU_INSTR_AS_ENABLE 0x00200000
+#define BM_CLKCTRL_HBUS_AUTO_SLOW_MODE 0x00100000
+#define BM_CLKCTRL_HBUS_RSRVD2 0x00080000
+#define BP_CLKCTRL_HBUS_SLOW_DIV 16
+#define BM_CLKCTRL_HBUS_SLOW_DIV 0x00070000
+#define BF_CLKCTRL_HBUS_SLOW_DIV(v) \
+ (((v) << 16) & BM_CLKCTRL_HBUS_SLOW_DIV)
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY1 0x0
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY2 0x1
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY4 0x2
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY8 0x3
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY16 0x4
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY32 0x5
+#define BP_CLKCTRL_HBUS_RSRVD1 6
+#define BM_CLKCTRL_HBUS_RSRVD1 0x0000FFC0
+#define BF_CLKCTRL_HBUS_RSRVD1(v) \
+ (((v) << 6) & BM_CLKCTRL_HBUS_RSRVD1)
+#define BM_CLKCTRL_HBUS_DIV_FRAC_EN 0x00000020
+#define BP_CLKCTRL_HBUS_DIV 0
+#define BM_CLKCTRL_HBUS_DIV 0x0000001F
+#define BF_CLKCTRL_HBUS_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_HBUS_DIV)
+
+#define HW_CLKCTRL_XBUS (0x00000040)
+
+#define BM_CLKCTRL_XBUS_BUSY 0x80000000
+#define BP_CLKCTRL_XBUS_RSRVD1 11
+#define BM_CLKCTRL_XBUS_RSRVD1 0x7FFFF800
+#define BF_CLKCTRL_XBUS_RSRVD1(v) \
+ (((v) << 11) & BM_CLKCTRL_XBUS_RSRVD1)
+#define BM_CLKCTRL_XBUS_DIV_FRAC_EN 0x00000400
+#define BP_CLKCTRL_XBUS_DIV 0
+#define BM_CLKCTRL_XBUS_DIV 0x000003FF
+#define BF_CLKCTRL_XBUS_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_XBUS_DIV)
+
+#define HW_CLKCTRL_XTAL (0x00000050)
+#define HW_CLKCTRL_XTAL_SET (0x00000054)
+#define HW_CLKCTRL_XTAL_CLR (0x00000058)
+#define HW_CLKCTRL_XTAL_TOG (0x0000005c)
+
+#define BP_CLKCTRL_XTAL_UART_CLK_GATE 31
+#define BM_CLKCTRL_XTAL_UART_CLK_GATE 0x80000000
+#define BP_CLKCTRL_XTAL_FILT_CLK24M_GATE 30
+#define BM_CLKCTRL_XTAL_FILT_CLK24M_GATE 0x40000000
+#define BP_CLKCTRL_XTAL_PWM_CLK24M_GATE 29
+#define BM_CLKCTRL_XTAL_PWM_CLK24M_GATE 0x20000000
+#define BM_CLKCTRL_XTAL_DRI_CLK24M_GATE 0x10000000
+#define BM_CLKCTRL_XTAL_DIGCTRL_CLK1M_GATE 0x08000000
+#define BP_CLKCTRL_XTAL_TIMROT_CLK32K_GATE 26
+#define BM_CLKCTRL_XTAL_TIMROT_CLK32K_GATE 0x04000000
+#define BP_CLKCTRL_XTAL_RSRVD1 2
+#define BM_CLKCTRL_XTAL_RSRVD1 0x03FFFFFC
+#define BF_CLKCTRL_XTAL_RSRVD1(v) \
+ (((v) << 2) & BM_CLKCTRL_XTAL_RSRVD1)
+#define BP_CLKCTRL_XTAL_DIV_UART 0
+#define BM_CLKCTRL_XTAL_DIV_UART 0x00000003
+#define BF_CLKCTRL_XTAL_DIV_UART(v) \
+ (((v) << 0) & BM_CLKCTRL_XTAL_DIV_UART)
+
+#define HW_CLKCTRL_PIX (0x00000060)
+
+#define BP_CLKCTRL_PIX_CLKGATE 31
+#define BM_CLKCTRL_PIX_CLKGATE 0x80000000
+#define BM_CLKCTRL_PIX_RSRVD2 0x40000000
+#define BM_CLKCTRL_PIX_BUSY 0x20000000
+#define BP_CLKCTRL_PIX_RSRVD1 13
+#define BM_CLKCTRL_PIX_RSRVD1 0x1FFFE000
+#define BF_CLKCTRL_PIX_RSRVD1(v) \
+ (((v) << 13) & BM_CLKCTRL_PIX_RSRVD1)
+#define BM_CLKCTRL_PIX_DIV_FRAC_EN 0x00001000
+#define BP_CLKCTRL_PIX_DIV 0
+#define BM_CLKCTRL_PIX_DIV 0x00000FFF
+#define BF_CLKCTRL_PIX_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_PIX_DIV)
+
+#define HW_CLKCTRL_SSP (0x00000070)
+
+#define BP_CLKCTRL_SSP_CLKGATE 31
+#define BM_CLKCTRL_SSP_CLKGATE 0x80000000
+#define BM_CLKCTRL_SSP_RSRVD2 0x40000000
+#define BM_CLKCTRL_SSP_BUSY 0x20000000
+#define BP_CLKCTRL_SSP_RSRVD1 10
+#define BM_CLKCTRL_SSP_RSRVD1 0x1FFFFC00
+#define BF_CLKCTRL_SSP_RSRVD1(v) \
+ (((v) << 10) & BM_CLKCTRL_SSP_RSRVD1)
+#define BM_CLKCTRL_SSP_DIV_FRAC_EN 0x00000200
+#define BP_CLKCTRL_SSP_DIV 0
+#define BM_CLKCTRL_SSP_DIV 0x000001FF
+#define BF_CLKCTRL_SSP_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SSP_DIV)
+
+#define HW_CLKCTRL_GPMI (0x00000080)
+
+#define BP_CLKCTRL_GPMI_CLKGATE 31
+#define BM_CLKCTRL_GPMI_CLKGATE 0x80000000
+#define BM_CLKCTRL_GPMI_RSRVD2 0x40000000
+#define BM_CLKCTRL_GPMI_BUSY 0x20000000
+#define BP_CLKCTRL_GPMI_RSRVD1 11
+#define BM_CLKCTRL_GPMI_RSRVD1 0x1FFFF800
+#define BF_CLKCTRL_GPMI_RSRVD1(v) \
+ (((v) << 11) & BM_CLKCTRL_GPMI_RSRVD1)
+#define BM_CLKCTRL_GPMI_DIV_FRAC_EN 0x00000400
+#define BP_CLKCTRL_GPMI_DIV 0
+#define BM_CLKCTRL_GPMI_DIV 0x000003FF
+#define BF_CLKCTRL_GPMI_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_GPMI_DIV)
+
+#define HW_CLKCTRL_SPDIF (0x00000090)
+
+#define BM_CLKCTRL_SPDIF_CLKGATE 0x80000000
+#define BP_CLKCTRL_SPDIF_RSRVD 0
+#define BM_CLKCTRL_SPDIF_RSRVD 0x7FFFFFFF
+#define BF_CLKCTRL_SPDIF_RSRVD(v) \
+ (((v) << 0) & BM_CLKCTRL_SPDIF_RSRVD)
+
+#define HW_CLKCTRL_EMI (0x000000a0)
+
+#define BP_CLKCTRL_EMI_CLKGATE 31
+#define BM_CLKCTRL_EMI_CLKGATE 0x80000000
+#define BM_CLKCTRL_EMI_SYNC_MODE_EN 0x40000000
+#define BM_CLKCTRL_EMI_BUSY_REF_XTAL 0x20000000
+#define BM_CLKCTRL_EMI_BUSY_REF_EMI 0x10000000
+#define BM_CLKCTRL_EMI_BUSY_REF_CPU 0x08000000
+#define BM_CLKCTRL_EMI_BUSY_SYNC_MODE 0x04000000
+#define BP_CLKCTRL_EMI_RSRVD3 18
+#define BM_CLKCTRL_EMI_RSRVD3 0x03FC0000
+#define BF_CLKCTRL_EMI_RSRVD3(v) \
+ (((v) << 18) & BM_CLKCTRL_EMI_RSRVD3)
+#define BM_CLKCTRL_EMI_BUSY_DCC_RESYNC 0x00020000
+#define BM_CLKCTRL_EMI_DCC_RESYNC_ENABLE 0x00010000
+#define BP_CLKCTRL_EMI_RSRVD2 12
+#define BM_CLKCTRL_EMI_RSRVD2 0x0000F000
+#define BF_CLKCTRL_EMI_RSRVD2(v) \
+ (((v) << 12) & BM_CLKCTRL_EMI_RSRVD2)
+#define BP_CLKCTRL_EMI_DIV_XTAL 8
+#define BM_CLKCTRL_EMI_DIV_XTAL 0x00000F00
+#define BF_CLKCTRL_EMI_DIV_XTAL(v) \
+ (((v) << 8) & BM_CLKCTRL_EMI_DIV_XTAL)
+#define BP_CLKCTRL_EMI_RSRVD1 6
+#define BM_CLKCTRL_EMI_RSRVD1 0x000000C0
+#define BF_CLKCTRL_EMI_RSRVD1(v) \
+ (((v) << 6) & BM_CLKCTRL_EMI_RSRVD1)
+#define BP_CLKCTRL_EMI_DIV_EMI 0
+#define BM_CLKCTRL_EMI_DIV_EMI 0x0000003F
+#define BF_CLKCTRL_EMI_DIV_EMI(v) \
+ (((v) << 0) & BM_CLKCTRL_EMI_DIV_EMI)
+
+#define HW_CLKCTRL_IR (0x000000b0)
+
+#define BM_CLKCTRL_IR_CLKGATE 0x80000000
+#define BM_CLKCTRL_IR_RSRVD3 0x40000000
+#define BM_CLKCTRL_IR_AUTO_DIV 0x20000000
+#define BM_CLKCTRL_IR_IR_BUSY 0x10000000
+#define BM_CLKCTRL_IR_IROV_BUSY 0x08000000
+#define BP_CLKCTRL_IR_RSRVD2 25
+#define BM_CLKCTRL_IR_RSRVD2 0x06000000
+#define BF_CLKCTRL_IR_RSRVD2(v) \
+ (((v) << 25) & BM_CLKCTRL_IR_RSRVD2)
+#define BP_CLKCTRL_IR_IROV_DIV 16
+#define BM_CLKCTRL_IR_IROV_DIV 0x01FF0000
+#define BF_CLKCTRL_IR_IROV_DIV(v) \
+ (((v) << 16) & BM_CLKCTRL_IR_IROV_DIV)
+#define BP_CLKCTRL_IR_RSRVD1 10
+#define BM_CLKCTRL_IR_RSRVD1 0x0000FC00
+#define BF_CLKCTRL_IR_RSRVD1(v) \
+ (((v) << 10) & BM_CLKCTRL_IR_RSRVD1)
+#define BP_CLKCTRL_IR_IR_DIV 0
+#define BM_CLKCTRL_IR_IR_DIV 0x000003FF
+#define BF_CLKCTRL_IR_IR_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_IR_IR_DIV)
+
+#define HW_CLKCTRL_SAIF (0x000000c0)
+
+#define BM_CLKCTRL_SAIF_CLKGATE 0x80000000
+#define BM_CLKCTRL_SAIF_RSRVD2 0x40000000
+#define BM_CLKCTRL_SAIF_BUSY 0x20000000
+#define BP_CLKCTRL_SAIF_RSRVD1 17
+#define BM_CLKCTRL_SAIF_RSRVD1 0x1FFE0000
+#define BF_CLKCTRL_SAIF_RSRVD1(v) \
+ (((v) << 17) & BM_CLKCTRL_SAIF_RSRVD1)
+#define BM_CLKCTRL_SAIF_DIV_FRAC_EN 0x00010000
+#define BP_CLKCTRL_SAIF_DIV 0
+#define BM_CLKCTRL_SAIF_DIV 0x0000FFFF
+#define BF_CLKCTRL_SAIF_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SAIF_DIV)
+
+#define HW_CLKCTRL_TV (0x000000d0)
+
+#define BM_CLKCTRL_TV_CLK_TV108M_GATE 0x80000000
+#define BM_CLKCTRL_TV_CLK_TV_GATE 0x40000000
+#define BP_CLKCTRL_TV_RSRVD 0
+#define BM_CLKCTRL_TV_RSRVD 0x3FFFFFFF
+#define BF_CLKCTRL_TV_RSRVD(v) \
+ (((v) << 0) & BM_CLKCTRL_TV_RSRVD)
+
+#define HW_CLKCTRL_ETM (0x000000e0)
+
+#define BM_CLKCTRL_ETM_CLKGATE 0x80000000
+#define BM_CLKCTRL_ETM_RSRVD2 0x40000000
+#define BM_CLKCTRL_ETM_BUSY 0x20000000
+#define BP_CLKCTRL_ETM_RSRVD1 7
+#define BM_CLKCTRL_ETM_RSRVD1 0x1FFFFF80
+#define BF_CLKCTRL_ETM_RSRVD1(v) \
+ (((v) << 7) & BM_CLKCTRL_ETM_RSRVD1)
+#define BM_CLKCTRL_ETM_DIV_FRAC_EN 0x00000040
+#define BP_CLKCTRL_ETM_DIV 0
+#define BM_CLKCTRL_ETM_DIV 0x0000003F
+#define BF_CLKCTRL_ETM_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_ETM_DIV)
+
+#define HW_CLKCTRL_FRAC (0x000000f0)
+#define HW_CLKCTRL_FRAC_SET (0x000000f4)
+#define HW_CLKCTRL_FRAC_CLR (0x000000f8)
+#define HW_CLKCTRL_FRAC_TOG (0x000000fc)
+
+#define BP_CLKCTRL_FRAC_CLKGATEIO 31
+#define BM_CLKCTRL_FRAC_CLKGATEIO 0x80000000
+#define BM_CLKCTRL_FRAC_IO_STABLE 0x40000000
+#define BP_CLKCTRL_FRAC_IOFRAC 24
+#define BM_CLKCTRL_FRAC_IOFRAC 0x3F000000
+#define BF_CLKCTRL_FRAC_IOFRAC(v) \
+ (((v) << 24) & BM_CLKCTRL_FRAC_IOFRAC)
+#define BP_CLKCTRL_FRAC_CLKGATEPIX 23
+#define BM_CLKCTRL_FRAC_CLKGATEPIX 0x00800000
+#define BM_CLKCTRL_FRAC_PIX_STABLE 0x00400000
+#define BP_CLKCTRL_FRAC_PIXFRAC 16
+#define BM_CLKCTRL_FRAC_PIXFRAC 0x003F0000
+#define BF_CLKCTRL_FRAC_PIXFRAC(v) \
+ (((v) << 16) & BM_CLKCTRL_FRAC_PIXFRAC)
+#define BP_CLKCTRL_FRAC_CLKGATEEMI 15
+#define BM_CLKCTRL_FRAC_CLKGATEEMI 0x00008000
+#define BM_CLKCTRL_FRAC_EMI_STABLE 0x00004000
+#define BP_CLKCTRL_FRAC_EMIFRAC 8
+#define BM_CLKCTRL_FRAC_EMIFRAC 0x00003F00
+#define BF_CLKCTRL_FRAC_EMIFRAC(v) \
+ (((v) << 8) & BM_CLKCTRL_FRAC_EMIFRAC)
+#define BP_CLKCTRL_FRAC_CLKGATECPU 7
+#define BM_CLKCTRL_FRAC_CLKGATECPU 0x00000080
+#define BM_CLKCTRL_FRAC_CPU_STABLE 0x00000040
+#define BP_CLKCTRL_FRAC_CPUFRAC 0
+#define BM_CLKCTRL_FRAC_CPUFRAC 0x0000003F
+#define BF_CLKCTRL_FRAC_CPUFRAC(v) \
+ (((v) << 0) & BM_CLKCTRL_FRAC_CPUFRAC)
+
+#define HW_CLKCTRL_FRAC1 (0x00000100)
+#define HW_CLKCTRL_FRAC1_SET (0x00000104)
+#define HW_CLKCTRL_FRAC1_CLR (0x00000108)
+#define HW_CLKCTRL_FRAC1_TOG (0x0000010c)
+
+#define BM_CLKCTRL_FRAC1_CLKGATEVID 0x80000000
+#define BM_CLKCTRL_FRAC1_VID_STABLE 0x40000000
+#define BP_CLKCTRL_FRAC1_RSRVD1 0
+#define BM_CLKCTRL_FRAC1_RSRVD1 0x3FFFFFFF
+#define BF_CLKCTRL_FRAC1_RSRVD1(v) \
+ (((v) << 0) & BM_CLKCTRL_FRAC1_RSRVD1)
+
+#define HW_CLKCTRL_CLKSEQ (0x00000110)
+#define HW_CLKCTRL_CLKSEQ_SET (0x00000114)
+#define HW_CLKCTRL_CLKSEQ_CLR (0x00000118)
+#define HW_CLKCTRL_CLKSEQ_TOG (0x0000011c)
+
+#define BP_CLKCTRL_CLKSEQ_RSRVD1 9
+#define BM_CLKCTRL_CLKSEQ_RSRVD1 0xFFFFFE00
+#define BF_CLKCTRL_CLKSEQ_RSRVD1(v) \
+ (((v) << 9) & BM_CLKCTRL_CLKSEQ_RSRVD1)
+#define BM_CLKCTRL_CLKSEQ_BYPASS_ETM 0x00000100
+#define BM_CLKCTRL_CLKSEQ_BYPASS_CPU 0x00000080
+#define BM_CLKCTRL_CLKSEQ_BYPASS_EMI 0x00000040
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SSP 0x00000020
+#define BM_CLKCTRL_CLKSEQ_BYPASS_GPMI 0x00000010
+#define BM_CLKCTRL_CLKSEQ_BYPASS_IR 0x00000008
+#define BM_CLKCTRL_CLKSEQ_RSRVD0 0x00000004
+#define BM_CLKCTRL_CLKSEQ_BYPASS_PIX 0x00000002
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SAIF 0x00000001
+
+#define HW_CLKCTRL_RESET (0x00000120)
+
+#define BP_CLKCTRL_RESET_RSRVD 2
+#define BM_CLKCTRL_RESET_RSRVD 0xFFFFFFFC
+#define BF_CLKCTRL_RESET_RSRVD(v) \
+ (((v) << 2) & BM_CLKCTRL_RESET_RSRVD)
+#define BM_CLKCTRL_RESET_CHIP 0x00000002
+#define BM_CLKCTRL_RESET_DIG 0x00000001
+
+#define HW_CLKCTRL_STATUS (0x00000130)
+
+#define BP_CLKCTRL_STATUS_CPU_LIMIT 30
+#define BM_CLKCTRL_STATUS_CPU_LIMIT 0xC0000000
+#define BF_CLKCTRL_STATUS_CPU_LIMIT(v) \
+ (((v) << 30) & BM_CLKCTRL_STATUS_CPU_LIMIT)
+#define BP_CLKCTRL_STATUS_RSRVD 0
+#define BM_CLKCTRL_STATUS_RSRVD 0x3FFFFFFF
+#define BF_CLKCTRL_STATUS_RSRVD(v) \
+ (((v) << 0) & BM_CLKCTRL_STATUS_RSRVD)
+
+#define HW_CLKCTRL_VERSION (0x00000140)
+
+#define BP_CLKCTRL_VERSION_MAJOR 24
+#define BM_CLKCTRL_VERSION_MAJOR 0xFF000000
+#define BF_CLKCTRL_VERSION_MAJOR(v) \
+ (((v) << 24) & BM_CLKCTRL_VERSION_MAJOR)
+#define BP_CLKCTRL_VERSION_MINOR 16
+#define BM_CLKCTRL_VERSION_MINOR 0x00FF0000
+#define BF_CLKCTRL_VERSION_MINOR(v) \
+ (((v) << 16) & BM_CLKCTRL_VERSION_MINOR)
+#define BP_CLKCTRL_VERSION_STEP 0
+#define BM_CLKCTRL_VERSION_STEP 0x0000FFFF
+#define BF_CLKCTRL_VERSION_STEP(v) \
+ (((v) << 0) & BM_CLKCTRL_VERSION_STEP)
+
+#endif /* __REGS_CLKCTRL_MX23_H__ */
diff --git a/arch/arm/mach-mxs/regs-clkctrl-mx28.h b/arch/arm/mach-mxs/regs-clkctrl-mx28.h
new file mode 100644
index 0000000..661df18
--- /dev/null
+++ b/arch/arm/mach-mxs/regs-clkctrl-mx28.h
@@ -0,0 +1,663 @@
+/*
+ * Freescale CLKCTRL Register Definitions
+ *
+ * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This file is created by xml file. Don't Edit it.
+ *
+ * Xml Revision: 1.48
+ * Template revision: 26195
+ */
+
+#ifndef __REGS_CLKCTRL_MX28_H__
+#define __REGS_CLKCTRL_MX28_H__
+
+#define HW_CLKCTRL_PLL0CTRL0 (0x00000000)
+#define HW_CLKCTRL_PLL0CTRL0_SET (0x00000004)
+#define HW_CLKCTRL_PLL0CTRL0_CLR (0x00000008)
+#define HW_CLKCTRL_PLL0CTRL0_TOG (0x0000000c)
+
+#define BP_CLKCTRL_PLL0CTRL0_RSRVD6 30
+#define BM_CLKCTRL_PLL0CTRL0_RSRVD6 0xC0000000
+#define BF_CLKCTRL_PLL0CTRL0_RSRVD6(v) \
+ (((v) << 30) & BM_CLKCTRL_PLL0CTRL0_RSRVD6)
+#define BP_CLKCTRL_PLL0CTRL0_LFR_SEL 28
+#define BM_CLKCTRL_PLL0CTRL0_LFR_SEL 0x30000000
+#define BF_CLKCTRL_PLL0CTRL0_LFR_SEL(v) \
+ (((v) << 28) & BM_CLKCTRL_PLL0CTRL0_LFR_SEL)
+#define BV_CLKCTRL_PLL0CTRL0_LFR_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLL0CTRL0_LFR_SEL__TIMES_2 0x1
+#define BV_CLKCTRL_PLL0CTRL0_LFR_SEL__TIMES_05 0x2
+#define BV_CLKCTRL_PLL0CTRL0_LFR_SEL__UNDEFINED 0x3
+#define BP_CLKCTRL_PLL0CTRL0_RSRVD5 26
+#define BM_CLKCTRL_PLL0CTRL0_RSRVD5 0x0C000000
+#define BF_CLKCTRL_PLL0CTRL0_RSRVD5(v) \
+ (((v) << 26) & BM_CLKCTRL_PLL0CTRL0_RSRVD5)
+#define BP_CLKCTRL_PLL0CTRL0_CP_SEL 24
+#define BM_CLKCTRL_PLL0CTRL0_CP_SEL 0x03000000
+#define BF_CLKCTRL_PLL0CTRL0_CP_SEL(v) \
+ (((v) << 24) & BM_CLKCTRL_PLL0CTRL0_CP_SEL)
+#define BV_CLKCTRL_PLL0CTRL0_CP_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLL0CTRL0_CP_SEL__TIMES_2 0x1
+#define BV_CLKCTRL_PLL0CTRL0_CP_SEL__TIMES_05 0x2
+#define BV_CLKCTRL_PLL0CTRL0_CP_SEL__UNDEFINED 0x3
+#define BP_CLKCTRL_PLL0CTRL0_RSRVD4 22
+#define BM_CLKCTRL_PLL0CTRL0_RSRVD4 0x00C00000
+#define BF_CLKCTRL_PLL0CTRL0_RSRVD4(v) \
+ (((v) << 22) & BM_CLKCTRL_PLL0CTRL0_RSRVD4)
+#define BP_CLKCTRL_PLL0CTRL0_DIV_SEL 20
+#define BM_CLKCTRL_PLL0CTRL0_DIV_SEL 0x00300000
+#define BF_CLKCTRL_PLL0CTRL0_DIV_SEL(v) \
+ (((v) << 20) & BM_CLKCTRL_PLL0CTRL0_DIV_SEL)
+#define BV_CLKCTRL_PLL0CTRL0_DIV_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLL0CTRL0_DIV_SEL__LOWER 0x1
+#define BV_CLKCTRL_PLL0CTRL0_DIV_SEL__LOWEST 0x2
+#define BV_CLKCTRL_PLL0CTRL0_DIV_SEL__UNDEFINED 0x3
+#define BM_CLKCTRL_PLL0CTRL0_RSRVD3 0x00080000
+#define BM_CLKCTRL_PLL0CTRL0_EN_USB_CLKS 0x00040000
+#define BM_CLKCTRL_PLL0CTRL0_POWER 0x00020000
+#define BP_CLKCTRL_PLL0CTRL0_RSRVD1 0
+#define BM_CLKCTRL_PLL0CTRL0_RSRVD1 0x0001FFFF
+#define BF_CLKCTRL_PLL0CTRL0_RSRVD1(v) \
+ (((v) << 0) & BM_CLKCTRL_PLL0CTRL0_RSRVD1)
+
+#define HW_CLKCTRL_PLL0CTRL1 (0x00000010)
+
+#define BM_CLKCTRL_PLL0CTRL1_LOCK 0x80000000
+#define BM_CLKCTRL_PLL0CTRL1_FORCE_LOCK 0x40000000
+#define BP_CLKCTRL_PLL0CTRL1_RSRVD1 16
+#define BM_CLKCTRL_PLL0CTRL1_RSRVD1 0x3FFF0000
+#define BF_CLKCTRL_PLL0CTRL1_RSRVD1(v) \
+ (((v) << 16) & BM_CLKCTRL_PLL0CTRL1_RSRVD1)
+#define BP_CLKCTRL_PLL0CTRL1_LOCK_COUNT 0
+#define BM_CLKCTRL_PLL0CTRL1_LOCK_COUNT 0x0000FFFF
+#define BF_CLKCTRL_PLL0CTRL1_LOCK_COUNT(v) \
+ (((v) << 0) & BM_CLKCTRL_PLL0CTRL1_LOCK_COUNT)
+
+#define HW_CLKCTRL_PLL1CTRL0 (0x00000020)
+#define HW_CLKCTRL_PLL1CTRL0_SET (0x00000024)
+#define HW_CLKCTRL_PLL1CTRL0_CLR (0x00000028)
+#define HW_CLKCTRL_PLL1CTRL0_TOG (0x0000002c)
+
+#define BM_CLKCTRL_PLL1CTRL0_CLKGATEEMI 0x80000000
+#define BM_CLKCTRL_PLL1CTRL0_RSRVD6 0x40000000
+#define BP_CLKCTRL_PLL1CTRL0_LFR_SEL 28
+#define BM_CLKCTRL_PLL1CTRL0_LFR_SEL 0x30000000
+#define BF_CLKCTRL_PLL1CTRL0_LFR_SEL(v) \
+ (((v) << 28) & BM_CLKCTRL_PLL1CTRL0_LFR_SEL)
+#define BV_CLKCTRL_PLL1CTRL0_LFR_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLL1CTRL0_LFR_SEL__TIMES_2 0x1
+#define BV_CLKCTRL_PLL1CTRL0_LFR_SEL__TIMES_05 0x2
+#define BV_CLKCTRL_PLL1CTRL0_LFR_SEL__UNDEFINED 0x3
+#define BP_CLKCTRL_PLL1CTRL0_RSRVD5 26
+#define BM_CLKCTRL_PLL1CTRL0_RSRVD5 0x0C000000
+#define BF_CLKCTRL_PLL1CTRL0_RSRVD5(v) \
+ (((v) << 26) & BM_CLKCTRL_PLL1CTRL0_RSRVD5)
+#define BP_CLKCTRL_PLL1CTRL0_CP_SEL 24
+#define BM_CLKCTRL_PLL1CTRL0_CP_SEL 0x03000000
+#define BF_CLKCTRL_PLL1CTRL0_CP_SEL(v) \
+ (((v) << 24) & BM_CLKCTRL_PLL1CTRL0_CP_SEL)
+#define BV_CLKCTRL_PLL1CTRL0_CP_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLL1CTRL0_CP_SEL__TIMES_2 0x1
+#define BV_CLKCTRL_PLL1CTRL0_CP_SEL__TIMES_05 0x2
+#define BV_CLKCTRL_PLL1CTRL0_CP_SEL__UNDEFINED 0x3
+#define BP_CLKCTRL_PLL1CTRL0_RSRVD4 22
+#define BM_CLKCTRL_PLL1CTRL0_RSRVD4 0x00C00000
+#define BF_CLKCTRL_PLL1CTRL0_RSRVD4(v) \
+ (((v) << 22) & BM_CLKCTRL_PLL1CTRL0_RSRVD4)
+#define BP_CLKCTRL_PLL1CTRL0_DIV_SEL 20
+#define BM_CLKCTRL_PLL1CTRL0_DIV_SEL 0x00300000
+#define BF_CLKCTRL_PLL1CTRL0_DIV_SEL(v) \
+ (((v) << 20) & BM_CLKCTRL_PLL1CTRL0_DIV_SEL)
+#define BV_CLKCTRL_PLL1CTRL0_DIV_SEL__DEFAULT 0x0
+#define BV_CLKCTRL_PLL1CTRL0_DIV_SEL__LOWER 0x1
+#define BV_CLKCTRL_PLL1CTRL0_DIV_SEL__LOWEST 0x2
+#define BV_CLKCTRL_PLL1CTRL0_DIV_SEL__UNDEFINED 0x3
+#define BM_CLKCTRL_PLL1CTRL0_RSRVD3 0x00080000
+#define BM_CLKCTRL_PLL1CTRL0_EN_USB_CLKS 0x00040000
+#define BM_CLKCTRL_PLL1CTRL0_POWER 0x00020000
+#define BP_CLKCTRL_PLL1CTRL0_RSRVD1 0
+#define BM_CLKCTRL_PLL1CTRL0_RSRVD1 0x0001FFFF
+#define BF_CLKCTRL_PLL1CTRL0_RSRVD1(v) \
+ (((v) << 0) & BM_CLKCTRL_PLL1CTRL0_RSRVD1)
+
+#define HW_CLKCTRL_PLL1CTRL1 (0x00000030)
+
+#define BM_CLKCTRL_PLL1CTRL1_LOCK 0x80000000
+#define BM_CLKCTRL_PLL1CTRL1_FORCE_LOCK 0x40000000
+#define BP_CLKCTRL_PLL1CTRL1_RSRVD1 16
+#define BM_CLKCTRL_PLL1CTRL1_RSRVD1 0x3FFF0000
+#define BF_CLKCTRL_PLL1CTRL1_RSRVD1(v) \
+ (((v) << 16) & BM_CLKCTRL_PLL1CTRL1_RSRVD1)
+#define BP_CLKCTRL_PLL1CTRL1_LOCK_COUNT 0
+#define BM_CLKCTRL_PLL1CTRL1_LOCK_COUNT 0x0000FFFF
+#define BF_CLKCTRL_PLL1CTRL1_LOCK_COUNT(v) \
+ (((v) << 0) & BM_CLKCTRL_PLL1CTRL1_LOCK_COUNT)
+
+#define HW_CLKCTRL_PLL2CTRL0 (0x00000040)
+#define HW_CLKCTRL_PLL2CTRL0_SET (0x00000044)
+#define HW_CLKCTRL_PLL2CTRL0_CLR (0x00000048)
+#define HW_CLKCTRL_PLL2CTRL0_TOG (0x0000004c)
+
+#define BM_CLKCTRL_PLL2CTRL0_CLKGATE 0x80000000
+#define BM_CLKCTRL_PLL2CTRL0_RSRVD3 0x40000000
+#define BP_CLKCTRL_PLL2CTRL0_LFR_SEL 28
+#define BM_CLKCTRL_PLL2CTRL0_LFR_SEL 0x30000000
+#define BF_CLKCTRL_PLL2CTRL0_LFR_SEL(v) \
+ (((v) << 28) & BM_CLKCTRL_PLL2CTRL0_LFR_SEL)
+#define BM_CLKCTRL_PLL2CTRL0_RSRVD2 0x08000000
+#define BM_CLKCTRL_PLL2CTRL0_HOLD_RING_OFF_B 0x04000000
+#define BP_CLKCTRL_PLL2CTRL0_CP_SEL 24
+#define BM_CLKCTRL_PLL2CTRL0_CP_SEL 0x03000000
+#define BF_CLKCTRL_PLL2CTRL0_CP_SEL(v) \
+ (((v) << 24) & BM_CLKCTRL_PLL2CTRL0_CP_SEL)
+#define BM_CLKCTRL_PLL2CTRL0_POWER 0x00800000
+#define BP_CLKCTRL_PLL2CTRL0_RSRVD1 0
+#define BM_CLKCTRL_PLL2CTRL0_RSRVD1 0x007FFFFF
+#define BF_CLKCTRL_PLL2CTRL0_RSRVD1(v) \
+ (((v) << 0) & BM_CLKCTRL_PLL2CTRL0_RSRVD1)
+
+#define HW_CLKCTRL_CPU (0x00000050)
+#define HW_CLKCTRL_CPU_SET (0x00000054)
+#define HW_CLKCTRL_CPU_CLR (0x00000058)
+#define HW_CLKCTRL_CPU_TOG (0x0000005c)
+
+#define BP_CLKCTRL_CPU_RSRVD5 30
+#define BM_CLKCTRL_CPU_RSRVD5 0xC0000000
+#define BF_CLKCTRL_CPU_RSRVD5(v) \
+ (((v) << 30) & BM_CLKCTRL_CPU_RSRVD5)
+#define BM_CLKCTRL_CPU_BUSY_REF_XTAL 0x20000000
+#define BM_CLKCTRL_CPU_BUSY_REF_CPU 0x10000000
+#define BM_CLKCTRL_CPU_RSRVD4 0x08000000
+#define BM_CLKCTRL_CPU_DIV_XTAL_FRAC_EN 0x04000000
+#define BP_CLKCTRL_CPU_DIV_XTAL 16
+#define BM_CLKCTRL_CPU_DIV_XTAL 0x03FF0000
+#define BF_CLKCTRL_CPU_DIV_XTAL(v) \
+ (((v) << 16) & BM_CLKCTRL_CPU_DIV_XTAL)
+#define BP_CLKCTRL_CPU_RSRVD3 13
+#define BM_CLKCTRL_CPU_RSRVD3 0x0000E000
+#define BF_CLKCTRL_CPU_RSRVD3(v) \
+ (((v) << 13) & BM_CLKCTRL_CPU_RSRVD3)
+#define BM_CLKCTRL_CPU_INTERRUPT_WAIT 0x00001000
+#define BM_CLKCTRL_CPU_RSRVD2 0x00000800
+#define BM_CLKCTRL_CPU_DIV_CPU_FRAC_EN 0x00000400
+#define BP_CLKCTRL_CPU_RSRVD1 6
+#define BM_CLKCTRL_CPU_RSRVD1 0x000003C0
+#define BF_CLKCTRL_CPU_RSRVD1(v) \
+ (((v) << 6) & BM_CLKCTRL_CPU_RSRVD1)
+#define BP_CLKCTRL_CPU_DIV_CPU 0
+#define BM_CLKCTRL_CPU_DIV_CPU 0x0000003F
+#define BF_CLKCTRL_CPU_DIV_CPU(v) \
+ (((v) << 0) & BM_CLKCTRL_CPU_DIV_CPU)
+
+#define HW_CLKCTRL_HBUS (0x00000060)
+#define HW_CLKCTRL_HBUS_SET (0x00000064)
+#define HW_CLKCTRL_HBUS_CLR (0x00000068)
+#define HW_CLKCTRL_HBUS_TOG (0x0000006c)
+
+#define BM_CLKCTRL_HBUS_ASM_BUSY 0x80000000
+#define BM_CLKCTRL_HBUS_DCP_AS_ENABLE 0x40000000
+#define BM_CLKCTRL_HBUS_PXP_AS_ENABLE 0x20000000
+#define BM_CLKCTRL_HBUS_RSRVD2 0x10000000
+#define BM_CLKCTRL_HBUS_ASM_EMIPORT_AS_ENABLE 0x08000000
+#define BM_CLKCTRL_HBUS_APBHDMA_AS_ENABLE 0x04000000
+#define BM_CLKCTRL_HBUS_APBXDMA_AS_ENABLE 0x02000000
+#define BM_CLKCTRL_HBUS_TRAFFIC_JAM_AS_ENABLE 0x01000000
+#define BM_CLKCTRL_HBUS_TRAFFIC_AS_ENABLE 0x00800000
+#define BM_CLKCTRL_HBUS_CPU_DATA_AS_ENABLE 0x00400000
+#define BM_CLKCTRL_HBUS_CPU_INSTR_AS_ENABLE 0x00200000
+#define BM_CLKCTRL_HBUS_ASM_ENABLE 0x00100000
+#define BM_CLKCTRL_HBUS_AUTO_CLEAR_DIV_ENABLE 0x00080000
+#define BP_CLKCTRL_HBUS_SLOW_DIV 16
+#define BM_CLKCTRL_HBUS_SLOW_DIV 0x00070000
+#define BF_CLKCTRL_HBUS_SLOW_DIV(v) \
+ (((v) << 16) & BM_CLKCTRL_HBUS_SLOW_DIV)
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY1 0x0
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY2 0x1
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY4 0x2
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY8 0x3
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY16 0x4
+#define BV_CLKCTRL_HBUS_SLOW_DIV__BY32 0x5
+#define BP_CLKCTRL_HBUS_RSRVD1 6
+#define BM_CLKCTRL_HBUS_RSRVD1 0x0000FFC0
+#define BF_CLKCTRL_HBUS_RSRVD1(v) \
+ (((v) << 6) & BM_CLKCTRL_HBUS_RSRVD1)
+#define BM_CLKCTRL_HBUS_DIV_FRAC_EN 0x00000020
+#define BP_CLKCTRL_HBUS_DIV 0
+#define BM_CLKCTRL_HBUS_DIV 0x0000001F
+#define BF_CLKCTRL_HBUS_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_HBUS_DIV)
+
+#define HW_CLKCTRL_XBUS (0x00000070)
+
+#define BM_CLKCTRL_XBUS_BUSY 0x80000000
+#define BP_CLKCTRL_XBUS_RSRVD1 12
+#define BM_CLKCTRL_XBUS_RSRVD1 0x7FFFF000
+#define BF_CLKCTRL_XBUS_RSRVD1(v) \
+ (((v) << 12) & BM_CLKCTRL_XBUS_RSRVD1)
+#define BM_CLKCTRL_XBUS_AUTO_CLEAR_DIV_ENABLE 0x00000800
+#define BM_CLKCTRL_XBUS_DIV_FRAC_EN 0x00000400
+#define BP_CLKCTRL_XBUS_DIV 0
+#define BM_CLKCTRL_XBUS_DIV 0x000003FF
+#define BF_CLKCTRL_XBUS_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_XBUS_DIV)
+
+#define HW_CLKCTRL_XTAL (0x00000080)
+#define HW_CLKCTRL_XTAL_SET (0x00000084)
+#define HW_CLKCTRL_XTAL_CLR (0x00000088)
+#define HW_CLKCTRL_XTAL_TOG (0x0000008c)
+
+#define BP_CLKCTRL_XTAL_UART_CLK_GATE 31
+#define BM_CLKCTRL_XTAL_UART_CLK_GATE 0x80000000
+#define BM_CLKCTRL_XTAL_RSRVD3 0x40000000
+#define BP_CLKCTRL_XTAL_PWM_CLK24M_GATE 29
+#define BM_CLKCTRL_XTAL_PWM_CLK24M_GATE 0x20000000
+#define BP_CLKCTRL_XTAL_RSRVD2 27
+#define BM_CLKCTRL_XTAL_RSRVD2 0x18000000
+#define BF_CLKCTRL_XTAL_RSRVD2(v) \
+ (((v) << 27) & BM_CLKCTRL_XTAL_RSRVD2)
+#define BP_CLKCTRL_XTAL_TIMROT_CLK32K_GATE 26
+#define BM_CLKCTRL_XTAL_TIMROT_CLK32K_GATE 0x04000000
+#define BP_CLKCTRL_XTAL_RSRVD1 2
+#define BM_CLKCTRL_XTAL_RSRVD1 0x03FFFFFC
+#define BF_CLKCTRL_XTAL_RSRVD1(v) \
+ (((v) << 2) & BM_CLKCTRL_XTAL_RSRVD1)
+#define BP_CLKCTRL_XTAL_DIV_UART 0
+#define BM_CLKCTRL_XTAL_DIV_UART 0x00000003
+#define BF_CLKCTRL_XTAL_DIV_UART(v) \
+ (((v) << 0) & BM_CLKCTRL_XTAL_DIV_UART)
+
+#define HW_CLKCTRL_SSP0 (0x00000090)
+
+#define BP_CLKCTRL_SSP0_CLKGATE 31
+#define BM_CLKCTRL_SSP0_CLKGATE 0x80000000
+#define BM_CLKCTRL_SSP0_RSRVD2 0x40000000
+#define BM_CLKCTRL_SSP0_BUSY 0x20000000
+#define BP_CLKCTRL_SSP0_RSRVD1 10
+#define BM_CLKCTRL_SSP0_RSRVD1 0x1FFFFC00
+#define BF_CLKCTRL_SSP0_RSRVD1(v) \
+ (((v) << 10) & BM_CLKCTRL_SSP0_RSRVD1)
+#define BM_CLKCTRL_SSP0_DIV_FRAC_EN 0x00000200
+#define BP_CLKCTRL_SSP0_DIV 0
+#define BM_CLKCTRL_SSP0_DIV 0x000001FF
+#define BF_CLKCTRL_SSP0_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SSP0_DIV)
+
+#define HW_CLKCTRL_SSP1 (0x000000a0)
+
+#define BP_CLKCTRL_SSP1_CLKGATE 31
+#define BM_CLKCTRL_SSP1_CLKGATE 0x80000000
+#define BM_CLKCTRL_SSP1_RSRVD2 0x40000000
+#define BM_CLKCTRL_SSP1_BUSY 0x20000000
+#define BP_CLKCTRL_SSP1_RSRVD1 10
+#define BM_CLKCTRL_SSP1_RSRVD1 0x1FFFFC00
+#define BF_CLKCTRL_SSP1_RSRVD1(v) \
+ (((v) << 10) & BM_CLKCTRL_SSP1_RSRVD1)
+#define BM_CLKCTRL_SSP1_DIV_FRAC_EN 0x00000200
+#define BP_CLKCTRL_SSP1_DIV 0
+#define BM_CLKCTRL_SSP1_DIV 0x000001FF
+#define BF_CLKCTRL_SSP1_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SSP1_DIV)
+
+#define HW_CLKCTRL_SSP2 (0x000000b0)
+
+#define BP_CLKCTRL_SSP2_CLKGATE 31
+#define BM_CLKCTRL_SSP2_CLKGATE 0x80000000
+#define BM_CLKCTRL_SSP2_RSRVD2 0x40000000
+#define BM_CLKCTRL_SSP2_BUSY 0x20000000
+#define BP_CLKCTRL_SSP2_RSRVD1 10
+#define BM_CLKCTRL_SSP2_RSRVD1 0x1FFFFC00
+#define BF_CLKCTRL_SSP2_RSRVD1(v) \
+ (((v) << 10) & BM_CLKCTRL_SSP2_RSRVD1)
+#define BM_CLKCTRL_SSP2_DIV_FRAC_EN 0x00000200
+#define BP_CLKCTRL_SSP2_DIV 0
+#define BM_CLKCTRL_SSP2_DIV 0x000001FF
+#define BF_CLKCTRL_SSP2_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SSP2_DIV)
+
+#define HW_CLKCTRL_SSP3 (0x000000c0)
+
+#define BP_CLKCTRL_SSP3_CLKGATE 31
+#define BM_CLKCTRL_SSP3_CLKGATE 0x80000000
+#define BM_CLKCTRL_SSP3_RSRVD2 0x40000000
+#define BM_CLKCTRL_SSP3_BUSY 0x20000000
+#define BP_CLKCTRL_SSP3_RSRVD1 10
+#define BM_CLKCTRL_SSP3_RSRVD1 0x1FFFFC00
+#define BF_CLKCTRL_SSP3_RSRVD1(v) \
+ (((v) << 10) & BM_CLKCTRL_SSP3_RSRVD1)
+#define BM_CLKCTRL_SSP3_DIV_FRAC_EN 0x00000200
+#define BP_CLKCTRL_SSP3_DIV 0
+#define BM_CLKCTRL_SSP3_DIV 0x000001FF
+#define BF_CLKCTRL_SSP3_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SSP3_DIV)
+
+#define HW_CLKCTRL_GPMI (0x000000d0)
+
+#define BP_CLKCTRL_GPMI_CLKGATE 31
+#define BM_CLKCTRL_GPMI_CLKGATE 0x80000000
+#define BM_CLKCTRL_GPMI_RSRVD2 0x40000000
+#define BM_CLKCTRL_GPMI_BUSY 0x20000000
+#define BP_CLKCTRL_GPMI_RSRVD1 11
+#define BM_CLKCTRL_GPMI_RSRVD1 0x1FFFF800
+#define BF_CLKCTRL_GPMI_RSRVD1(v) \
+ (((v) << 11) & BM_CLKCTRL_GPMI_RSRVD1)
+#define BM_CLKCTRL_GPMI_DIV_FRAC_EN 0x00000400
+#define BP_CLKCTRL_GPMI_DIV 0
+#define BM_CLKCTRL_GPMI_DIV 0x000003FF
+#define BF_CLKCTRL_GPMI_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_GPMI_DIV)
+
+#define HW_CLKCTRL_SPDIF (0x000000e0)
+
+#define BP_CLKCTRL_SPDIF_CLKGATE 31
+#define BM_CLKCTRL_SPDIF_CLKGATE 0x80000000
+#define BP_CLKCTRL_SPDIF_RSRVD 0
+#define BM_CLKCTRL_SPDIF_RSRVD 0x7FFFFFFF
+#define BF_CLKCTRL_SPDIF_RSRVD(v) \
+ (((v) << 0) & BM_CLKCTRL_SPDIF_RSRVD)
+
+#define HW_CLKCTRL_EMI (0x000000f0)
+
+#define BP_CLKCTRL_EMI_CLKGATE 31
+#define BM_CLKCTRL_EMI_CLKGATE 0x80000000
+#define BM_CLKCTRL_EMI_SYNC_MODE_EN 0x40000000
+#define BM_CLKCTRL_EMI_BUSY_REF_XTAL 0x20000000
+#define BM_CLKCTRL_EMI_BUSY_REF_EMI 0x10000000
+#define BM_CLKCTRL_EMI_BUSY_REF_CPU 0x08000000
+#define BM_CLKCTRL_EMI_BUSY_SYNC_MODE 0x04000000
+#define BP_CLKCTRL_EMI_RSRVD3 18
+#define BM_CLKCTRL_EMI_RSRVD3 0x03FC0000
+#define BF_CLKCTRL_EMI_RSRVD3(v) \
+ (((v) << 18) & BM_CLKCTRL_EMI_RSRVD3)
+#define BM_CLKCTRL_EMI_BUSY_DCC_RESYNC 0x00020000
+#define BM_CLKCTRL_EMI_DCC_RESYNC_ENABLE 0x00010000
+#define BP_CLKCTRL_EMI_RSRVD2 12
+#define BM_CLKCTRL_EMI_RSRVD2 0x0000F000
+#define BF_CLKCTRL_EMI_RSRVD2(v) \
+ (((v) << 12) & BM_CLKCTRL_EMI_RSRVD2)
+#define BP_CLKCTRL_EMI_DIV_XTAL 8
+#define BM_CLKCTRL_EMI_DIV_XTAL 0x00000F00
+#define BF_CLKCTRL_EMI_DIV_XTAL(v) \
+ (((v) << 8) & BM_CLKCTRL_EMI_DIV_XTAL)
+#define BP_CLKCTRL_EMI_RSRVD1 6
+#define BM_CLKCTRL_EMI_RSRVD1 0x000000C0
+#define BF_CLKCTRL_EMI_RSRVD1(v) \
+ (((v) << 6) & BM_CLKCTRL_EMI_RSRVD1)
+#define BP_CLKCTRL_EMI_DIV_EMI 0
+#define BM_CLKCTRL_EMI_DIV_EMI 0x0000003F
+#define BF_CLKCTRL_EMI_DIV_EMI(v) \
+ (((v) << 0) & BM_CLKCTRL_EMI_DIV_EMI)
+
+#define HW_CLKCTRL_SAIF0 (0x00000100)
+
+#define BP_CLKCTRL_SAIF0_CLKGATE 31
+#define BM_CLKCTRL_SAIF0_CLKGATE 0x80000000
+#define BM_CLKCTRL_SAIF0_RSRVD2 0x40000000
+#define BM_CLKCTRL_SAIF0_BUSY 0x20000000
+#define BP_CLKCTRL_SAIF0_RSRVD1 17
+#define BM_CLKCTRL_SAIF0_RSRVD1 0x1FFE0000
+#define BF_CLKCTRL_SAIF0_RSRVD1(v) \
+ (((v) << 17) & BM_CLKCTRL_SAIF0_RSRVD1)
+#define BM_CLKCTRL_SAIF0_DIV_FRAC_EN 0x00010000
+#define BP_CLKCTRL_SAIF0_DIV 0
+#define BM_CLKCTRL_SAIF0_DIV 0x0000FFFF
+#define BF_CLKCTRL_SAIF0_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SAIF0_DIV)
+
+#define HW_CLKCTRL_SAIF1 (0x00000110)
+
+#define BP_CLKCTRL_SAIF1_CLKGATE 31
+#define BM_CLKCTRL_SAIF1_CLKGATE 0x80000000
+#define BM_CLKCTRL_SAIF1_RSRVD2 0x40000000
+#define BM_CLKCTRL_SAIF1_BUSY 0x20000000
+#define BP_CLKCTRL_SAIF1_RSRVD1 17
+#define BM_CLKCTRL_SAIF1_RSRVD1 0x1FFE0000
+#define BF_CLKCTRL_SAIF1_RSRVD1(v) \
+ (((v) << 17) & BM_CLKCTRL_SAIF1_RSRVD1)
+#define BM_CLKCTRL_SAIF1_DIV_FRAC_EN 0x00010000
+#define BP_CLKCTRL_SAIF1_DIV 0
+#define BM_CLKCTRL_SAIF1_DIV 0x0000FFFF
+#define BF_CLKCTRL_SAIF1_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_SAIF1_DIV)
+
+#define HW_CLKCTRL_DIS_LCDIF (0x00000120)
+
+#define BP_CLKCTRL_DIS_LCDIF_CLKGATE 31
+#define BM_CLKCTRL_DIS_LCDIF_CLKGATE 0x80000000
+#define BM_CLKCTRL_DIS_LCDIF_RSRVD2 0x40000000
+#define BM_CLKCTRL_DIS_LCDIF_BUSY 0x20000000
+#define BP_CLKCTRL_DIS_LCDIF_RSRVD1 14
+#define BM_CLKCTRL_DIS_LCDIF_RSRVD1 0x1FFFC000
+#define BF_CLKCTRL_DIS_LCDIF_RSRVD1(v) \
+ (((v) << 14) & BM_CLKCTRL_DIS_LCDIF_RSRVD1)
+#define BM_CLKCTRL_DIS_LCDIF_DIV_FRAC_EN 0x00002000
+#define BP_CLKCTRL_DIS_LCDIF_DIV 0
+#define BM_CLKCTRL_DIS_LCDIF_DIV 0x00001FFF
+#define BF_CLKCTRL_DIS_LCDIF_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_DIS_LCDIF_DIV)
+
+#define HW_CLKCTRL_ETM (0x00000130)
+
+#define BM_CLKCTRL_ETM_CLKGATE 0x80000000
+#define BM_CLKCTRL_ETM_RSRVD2 0x40000000
+#define BM_CLKCTRL_ETM_BUSY 0x20000000
+#define BP_CLKCTRL_ETM_RSRVD1 8
+#define BM_CLKCTRL_ETM_RSRVD1 0x1FFFFF00
+#define BF_CLKCTRL_ETM_RSRVD1(v) \
+ (((v) << 8) & BM_CLKCTRL_ETM_RSRVD1)
+#define BM_CLKCTRL_ETM_DIV_FRAC_EN 0x00000080
+#define BP_CLKCTRL_ETM_DIV 0
+#define BM_CLKCTRL_ETM_DIV 0x0000007F
+#define BF_CLKCTRL_ETM_DIV(v) \
+ (((v) << 0) & BM_CLKCTRL_ETM_DIV)
+
+#define HW_CLKCTRL_ENET (0x00000140)
+
+#define BM_CLKCTRL_ENET_SLEEP 0x80000000
+#define BP_CLKCTRL_ENET_DISABLE 30
+#define BM_CLKCTRL_ENET_DISABLE 0x40000000
+#define BM_CLKCTRL_ENET_STATUS 0x20000000
+#define BM_CLKCTRL_ENET_RSRVD1 0x10000000
+#define BM_CLKCTRL_ENET_BUSY_TIME 0x08000000
+#define BP_CLKCTRL_ENET_DIV_TIME 21
+#define BM_CLKCTRL_ENET_DIV_TIME 0x07E00000
+#define BF_CLKCTRL_ENET_DIV_TIME(v) \
+ (((v) << 21) & BM_CLKCTRL_ENET_DIV_TIME)
+#define BM_CLKCTRL_ENET_BUSY 0x08000000
+#define BP_CLKCTRL_ENET_DIV 21
+#define BM_CLKCTRL_ENET_DIV 0x07E00000
+#define BF_CLKCTRL_ENET_DIV(v) \
+ (((v) << 21) & BM_CLKCTRL_ENET_DIV)
+#define BP_CLKCTRL_ENET_TIME_SEL 19
+#define BM_CLKCTRL_ENET_TIME_SEL 0x00180000
+#define BF_CLKCTRL_ENET_TIME_SEL(v) \
+ (((v) << 19) & BM_CLKCTRL_ENET_TIME_SEL)
+#define BV_CLKCTRL_ENET_TIME_SEL__XTAL 0x0
+#define BV_CLKCTRL_ENET_TIME_SEL__PLL 0x1
+#define BV_CLKCTRL_ENET_TIME_SEL__RMII_CLK 0x2
+#define BV_CLKCTRL_ENET_TIME_SEL__UNDEFINED 0x3
+#define BM_CLKCTRL_ENET_CLK_OUT_EN 0x00040000
+#define BM_CLKCTRL_ENET_RESET_BY_SW_CHIP 0x00020000
+#define BM_CLKCTRL_ENET_RESET_BY_SW 0x00010000
+#define BP_CLKCTRL_ENET_RSRVD0 0
+#define BM_CLKCTRL_ENET_RSRVD0 0x0000FFFF
+#define BF_CLKCTRL_ENET_RSRVD0(v) \
+ (((v) << 0) & BM_CLKCTRL_ENET_RSRVD0)
+
+#define HW_CLKCTRL_HSADC (0x00000150)
+
+#define BM_CLKCTRL_HSADC_RSRVD2 0x80000000
+#define BM_CLKCTRL_HSADC_RESETB 0x40000000
+#define BP_CLKCTRL_HSADC_FREQDIV 28
+#define BM_CLKCTRL_HSADC_FREQDIV 0x30000000
+#define BF_CLKCTRL_HSADC_FREQDIV(v) \
+ (((v) << 28) & BM_CLKCTRL_HSADC_FREQDIV)
+#define BP_CLKCTRL_HSADC_RSRVD1 0
+#define BM_CLKCTRL_HSADC_RSRVD1 0x0FFFFFFF
+#define BF_CLKCTRL_HSADC_RSRVD1(v) \
+ (((v) << 0) & BM_CLKCTRL_HSADC_RSRVD1)
+
+#define HW_CLKCTRL_FLEXCAN (0x00000160)
+
+#define BM_CLKCTRL_FLEXCAN_RSRVD2 0x80000000
+#define BP_CLKCTRL_FLEXCAN_STOP_CAN0 30
+#define BM_CLKCTRL_FLEXCAN_STOP_CAN0 0x40000000
+#define BM_CLKCTRL_FLEXCAN_CAN0_STATUS 0x20000000
+#define BP_CLKCTRL_FLEXCAN_STOP_CAN1 28
+#define BM_CLKCTRL_FLEXCAN_STOP_CAN1 0x10000000
+#define BM_CLKCTRL_FLEXCAN_CAN1_STATUS 0x08000000
+#define BP_CLKCTRL_FLEXCAN_RSRVD1 0
+#define BM_CLKCTRL_FLEXCAN_RSRVD1 0x07FFFFFF
+#define BF_CLKCTRL_FLEXCAN_RSRVD1(v) \
+ (((v) << 0) & BM_CLKCTRL_FLEXCAN_RSRVD1)
+
+#define HW_CLKCTRL_FRAC0 (0x000001b0)
+#define HW_CLKCTRL_FRAC0_SET (0x000001b4)
+#define HW_CLKCTRL_FRAC0_CLR (0x000001b8)
+#define HW_CLKCTRL_FRAC0_TOG (0x000001bc)
+
+#define BP_CLKCTRL_FRAC0_CLKGATEIO0 31
+#define BM_CLKCTRL_FRAC0_CLKGATEIO0 0x80000000
+#define BM_CLKCTRL_FRAC0_IO0_STABLE 0x40000000
+#define BP_CLKCTRL_FRAC0_IO0FRAC 24
+#define BM_CLKCTRL_FRAC0_IO0FRAC 0x3F000000
+#define BF_CLKCTRL_FRAC0_IO0FRAC(v) \
+ (((v) << 24) & BM_CLKCTRL_FRAC0_IO0FRAC)
+#define BP_CLKCTRL_FRAC0_CLKGATEIO1 23
+#define BM_CLKCTRL_FRAC0_CLKGATEIO1 0x00800000
+#define BM_CLKCTRL_FRAC0_IO1_STABLE 0x00400000
+#define BP_CLKCTRL_FRAC0_IO1FRAC 16
+#define BM_CLKCTRL_FRAC0_IO1FRAC 0x003F0000
+#define BF_CLKCTRL_FRAC0_IO1FRAC(v) \
+ (((v) << 16) & BM_CLKCTRL_FRAC0_IO1FRAC)
+#define BP_CLKCTRL_FRAC0_CLKGATEEMI 15
+#define BM_CLKCTRL_FRAC0_CLKGATEEMI 0x00008000
+#define BM_CLKCTRL_FRAC0_EMI_STABLE 0x00004000
+#define BP_CLKCTRL_FRAC0_EMIFRAC 8
+#define BM_CLKCTRL_FRAC0_EMIFRAC 0x00003F00
+#define BF_CLKCTRL_FRAC0_EMIFRAC(v) \
+ (((v) << 8) & BM_CLKCTRL_FRAC0_EMIFRAC)
+#define BP_CLKCTRL_FRAC0_CLKGATECPU 7
+#define BM_CLKCTRL_FRAC0_CLKGATECPU 0x00000080
+#define BM_CLKCTRL_FRAC0_CPU_STABLE 0x00000040
+#define BP_CLKCTRL_FRAC0_CPUFRAC 0
+#define BM_CLKCTRL_FRAC0_CPUFRAC 0x0000003F
+#define BF_CLKCTRL_FRAC0_CPUFRAC(v) \
+ (((v) << 0) & BM_CLKCTRL_FRAC0_CPUFRAC)
+
+#define HW_CLKCTRL_FRAC1 (0x000001c0)
+#define HW_CLKCTRL_FRAC1_SET (0x000001c4)
+#define HW_CLKCTRL_FRAC1_CLR (0x000001c8)
+#define HW_CLKCTRL_FRAC1_TOG (0x000001cc)
+
+#define BP_CLKCTRL_FRAC1_RSRVD2 24
+#define BM_CLKCTRL_FRAC1_RSRVD2 0xFF000000
+#define BF_CLKCTRL_FRAC1_RSRVD2(v) \
+ (((v) << 24) & BM_CLKCTRL_FRAC1_RSRVD2)
+#define BP_CLKCTRL_FRAC1_CLKGATEGPMI 23
+#define BM_CLKCTRL_FRAC1_CLKGATEGPMI 0x00800000
+#define BM_CLKCTRL_FRAC1_GPMI_STABLE 0x00400000
+#define BP_CLKCTRL_FRAC1_GPMIFRAC 16
+#define BM_CLKCTRL_FRAC1_GPMIFRAC 0x003F0000
+#define BF_CLKCTRL_FRAC1_GPMIFRAC(v) \
+ (((v) << 16) & BM_CLKCTRL_FRAC1_GPMIFRAC)
+#define BP_CLKCTRL_FRAC1_CLKGATEHSADC 15
+#define BM_CLKCTRL_FRAC1_CLKGATEHSADC 0x00008000
+#define BM_CLKCTRL_FRAC1_HSADC_STABLE 0x00004000
+#define BP_CLKCTRL_FRAC1_HSADCFRAC 8
+#define BM_CLKCTRL_FRAC1_HSADCFRAC 0x00003F00
+#define BF_CLKCTRL_FRAC1_HSADCFRAC(v) \
+ (((v) << 8) & BM_CLKCTRL_FRAC1_HSADCFRAC)
+#define BP_CLKCTRL_FRAC1_CLKGATEPIX 7
+#define BM_CLKCTRL_FRAC1_CLKGATEPIX 0x00000080
+#define BM_CLKCTRL_FRAC1_PIX_STABLE 0x00000040
+#define BP_CLKCTRL_FRAC1_PIXFRAC 0
+#define BM_CLKCTRL_FRAC1_PIXFRAC 0x0000003F
+#define BF_CLKCTRL_FRAC1_PIXFRAC(v) \
+ (((v) << 0) & BM_CLKCTRL_FRAC1_PIXFRAC)
+
+#define HW_CLKCTRL_CLKSEQ (0x000001d0)
+#define HW_CLKCTRL_CLKSEQ_SET (0x000001d4)
+#define HW_CLKCTRL_CLKSEQ_CLR (0x000001d8)
+#define HW_CLKCTRL_CLKSEQ_TOG (0x000001dc)
+
+#define BP_CLKCTRL_CLKSEQ_RSRVD0 19
+#define BM_CLKCTRL_CLKSEQ_RSRVD0 0xFFF80000
+#define BF_CLKCTRL_CLKSEQ_RSRVD0(v) \
+ (((v) << 19) & BM_CLKCTRL_CLKSEQ_RSRVD0)
+#define BM_CLKCTRL_CLKSEQ_BYPASS_CPU 0x00040000
+#define BP_CLKCTRL_CLKSEQ_RSRVD1 15
+#define BM_CLKCTRL_CLKSEQ_RSRVD1 0x00038000
+#define BF_CLKCTRL_CLKSEQ_RSRVD1(v) \
+ (((v) << 15) & BM_CLKCTRL_CLKSEQ_RSRVD1)
+#define BM_CLKCTRL_CLKSEQ_BYPASS_DIS_LCDIF 0x00004000
+#define BV_CLKCTRL_CLKSEQ_BYPASS_DIS_LCDIF__BYPASS 0x1
+#define BV_CLKCTRL_CLKSEQ_BYPASS_DIS_LCDIF__PFD 0x0
+#define BP_CLKCTRL_CLKSEQ_RSRVD2 9
+#define BM_CLKCTRL_CLKSEQ_RSRVD2 0x00003E00
+#define BF_CLKCTRL_CLKSEQ_RSRVD2(v) \
+ (((v) << 9) & BM_CLKCTRL_CLKSEQ_RSRVD2)
+#define BM_CLKCTRL_CLKSEQ_BYPASS_ETM 0x00000100
+#define BM_CLKCTRL_CLKSEQ_BYPASS_EMI 0x00000080
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SSP3 0x00000040
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SSP2 0x00000020
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SSP1 0x00000010
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SSP0 0x00000008
+#define BM_CLKCTRL_CLKSEQ_BYPASS_GPMI 0x00000004
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SAIF1 0x00000002
+#define BM_CLKCTRL_CLKSEQ_BYPASS_SAIF0 0x00000001
+
+#define HW_CLKCTRL_RESET (0x000001e0)
+
+#define BP_CLKCTRL_RESET_RSRVD 6
+#define BM_CLKCTRL_RESET_RSRVD 0xFFFFFFC0
+#define BF_CLKCTRL_RESET_RSRVD(v) \
+ (((v) << 6) & BM_CLKCTRL_RESET_RSRVD)
+#define BM_CLKCTRL_RESET_WDOG_POR_DISABLE 0x00000020
+#define BM_CLKCTRL_RESET_EXTERNAL_RESET_ENABLE 0x00000010
+#define BM_CLKCTRL_RESET_THERMAL_RESET_ENABLE 0x00000008
+#define BM_CLKCTRL_RESET_THERMAL_RESET_DEFAULT 0x00000004
+#define BM_CLKCTRL_RESET_CHIP 0x00000002
+#define BM_CLKCTRL_RESET_DIG 0x00000001
+
+#define HW_CLKCTRL_STATUS (0x000001f0)
+
+#define BP_CLKCTRL_STATUS_CPU_LIMIT 30
+#define BM_CLKCTRL_STATUS_CPU_LIMIT 0xC0000000
+#define BF_CLKCTRL_STATUS_CPU_LIMIT(v) \
+ (((v) << 30) & BM_CLKCTRL_STATUS_CPU_LIMIT)
+#define BP_CLKCTRL_STATUS_RSRVD 0
+#define BM_CLKCTRL_STATUS_RSRVD 0x3FFFFFFF
+#define BF_CLKCTRL_STATUS_RSRVD(v) \
+ (((v) << 0) & BM_CLKCTRL_STATUS_RSRVD)
+
+#define HW_CLKCTRL_VERSION (0x00000200)
+
+#define BP_CLKCTRL_VERSION_MAJOR 24
+#define BM_CLKCTRL_VERSION_MAJOR 0xFF000000
+#define BF_CLKCTRL_VERSION_MAJOR(v) \
+ (((v) << 24) & BM_CLKCTRL_VERSION_MAJOR)
+#define BP_CLKCTRL_VERSION_MINOR 16
+#define BM_CLKCTRL_VERSION_MINOR 0x00FF0000
+#define BF_CLKCTRL_VERSION_MINOR(v) \
+ (((v) << 16) & BM_CLKCTRL_VERSION_MINOR)
+#define BP_CLKCTRL_VERSION_STEP 0
+#define BM_CLKCTRL_VERSION_STEP 0x0000FFFF
+#define BF_CLKCTRL_VERSION_STEP(v) \
+ (((v) << 0) & BM_CLKCTRL_VERSION_STEP)
+
+#endif /* __REGS_CLKCTRL_MX28_H__ */
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-10 8:06 ` [PATCH v5 07/15] ARM: mxs: Add gpio support Shawn Guo
@ 2010-12-10 10:24 ` Uwe Kleine-König
2010-12-10 15:42 ` Shawn Guo
2010-12-13 7:28 ` Shawn Guo
0 siblings, 2 replies; 12+ messages in thread
From: Uwe Kleine-König @ 2010-12-10 10:24 UTC (permalink / raw)
To: linux-arm-kernel
Hello Shawn,
On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
> + /* set level or edge */
> + if (edge & GPIO_INT_LEV_MASK)
> + __raw_writel(1 << (gpio & 31),
> + port->base + PINCTRL_IRQLEV(port->id) + MXS_SET_ADDR);
> + else
> + __raw_writel(1 << (gpio & 31),
> + port->base + PINCTRL_IRQLEV(port->id) + MXS_CLR_ADDR);
Is this preferable?:
__raw_writel(1 << (gpio & 31), port->base + PINCTRL_IRQLEV(port->id) +
(edge & GPIO_INT_LEV_MASK ? MXS_SET_ADDR : MXS_CLR_ADDR))
. I'm not sure. And if you like my __raw_setl/__raw_clearl (or
__raw_clrl?) suggestion this won't work though. If you don't, I'd
prefer to be easily able to see that the two commands only differ by
MXS_SET_ADDR vs. MXS_CLR_ADDR.
e.g.
u32 nicename = 1 << (gpio & 31);
correcttype addr = port->base + PINCTRL_IRQLEV(port->id);
if (edge & GPIO_INT_LEV_MASK)
__raw_writel(nicename, addr + MXS_SET_ADDR);
else
__raw_writel(nicename, addr + MXS_CLR_ADDR);
> + /* set polarity */
> + if (edge & GPIO_INT_POL_MASK)
> + __raw_writel(1 << (gpio & 31),
> + port->base + PINCTRL_IRQPOL(port->id) + MXS_SET_ADDR);
> + else
> + __raw_writel(1 << (gpio & 31),
> + port->base + PINCTRL_IRQPOL(port->id) + MXS_CLR_ADDR);
ditto. You can even reuse nicename here.
> +
> + _clear_gpio_irqstatus(port, gpio & 0x1f);
> +
> + return 0;
> +}
> +
> +/* MXS has one interrupt *per* gpio port */
> +static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc)
> +{
> + u32 irq_stat;
> + struct mxs_gpio_port *port = (struct mxs_gpio_port *)get_irq_data(irq);
> + u32 gpio_irq_no_base = port->virtual_irq_start;
> +
> + irq_stat = __raw_readl(port->base + PINCTRL_IRQSTAT(port->id)) &
> + __raw_readl(port->base + PINCTRL_IRQEN(port->id)) &
> + __raw_readl(port->base + PINCTRL_PIN2IRQ(port->id));
I think now a bit set in PINCTRL_IRQEN implies the same bit set in
PINCTRL_PIN2IRQ, doesn't it? If so, & PINCTRL_PIN2IRQ doesn't add any
value.
> +static void _set_gpio_direction(struct gpio_chip *chip, unsigned offset,
> + int dir)
mxs_gpio_direction_set would better match the naming scheme of
mxs_gpio_direction_input and mxs_gpio_direction_output. (If you ask me,
don't use leading underscores in .c files, static is enough to signal
the function to be private.)
> +{
> + struct mxs_gpio_port *port =
> + container_of(chip, struct mxs_gpio_port, chip);
> +
> + if (dir)
> + __raw_writel(1 << offset,
> + port->base + PINCTRL_DOE(port->id) + MXS_SET_ADDR);
> + else
> + __raw_writel(1 << offset,
> + port->base + PINCTRL_DOE(port->id) + MXS_CLR_ADDR);
as above, at least give a name for port->base + PINCTRL_DOE(port->id).
> +int __init mxs_gpio_init(struct mxs_gpio_port *port, int cnt)
> +{
> + int i, j;
> +
> + /* save for local usage */
> + mxs_gpio_ports = port;
> + gpio_table_size = cnt;
> +
> + pr_info("MXS GPIO hardware\n");
> +
> + for (i = 0; i < cnt; i++) {
> + /* disable the interrupt and clear the status */
> + __raw_writel(0, port[i].base +
> + PINCTRL_PIN2IRQ(i));
> + __raw_writel(0, port[i].base +
> + PINCTRL_IRQEN(i));
> + __raw_writel(~0, port[i].base +
> + PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
Why not __raw_writel(0, port[i].base + PINCTRL_IRQSTAT(i)) ?
(And note that applying ~ on a signed integer isn't portable in
general. For all sane archs this is the same as ~0U though and ARM is
sane (here), still I think it's good to be aware of such things and
avoid them if easily possible.)
> + /* its a serious configuration bug when it fails */
> + BUG_ON( gpiochip_add(&port[i].chip) < 0 );
> +
> + /* setup one handler for each entry */
> + set_irq_chained_handler(port[i].irq, mxs_gpio_irq_handler);
> + set_irq_data(port[i].irq, &port[i]);
I think it's saver to first setup the irq stuff and only then register
the gpiochip.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-K?nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-10 10:24 ` Uwe Kleine-König
@ 2010-12-10 15:42 ` Shawn Guo
2010-12-13 7:28 ` Shawn Guo
1 sibling, 0 replies; 12+ messages in thread
From: Shawn Guo @ 2010-12-10 15:42 UTC (permalink / raw)
To: linux-arm-kernel
Hi Uwe,
2010/12/10 Uwe Kleine-K?nig <u.kleine-koenig@pengutronix.de>:
> Hello Shawn,
>
> On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
>> + ? ? /* set level or edge */
>> + ? ? if (edge & GPIO_INT_LEV_MASK)
>> + ? ? ? ? ? ? __raw_writel(1 << (gpio & 31),
>> + ? ? ? ? ? ? ? ? ? ? port->base + PINCTRL_IRQLEV(port->id) + MXS_SET_ADDR);
>> + ? ? else
>> + ? ? ? ? ? ? __raw_writel(1 << (gpio & 31),
>> + ? ? ? ? ? ? ? ? ? ? port->base + PINCTRL_IRQLEV(port->id) + MXS_CLR_ADDR);
> Is this preferable?:
>
> ? ? ? ?__raw_writel(1 << (gpio & 31), port->base + PINCTRL_IRQLEV(port->id) +
> ? ? ? ? ? ? ? ?(edge & GPIO_INT_LEV_MASK ? MXS_SET_ADDR : MXS_CLR_ADDR))
>
> . ?I'm not sure. ?And if you like my __raw_setl/__raw_clearl (or
> __raw_clrl?) suggestion this won't work though. ?If you don't, I'd
> prefer to be easily able to see that the two commands only differ by
> MXS_SET_ADDR vs. MXS_CLR_ADDR.
>
> e.g.
>
> ? ? ? ?u32 nicename = 1 << (gpio & 31);
> ? ? ? ?correcttype addr = port->base + PINCTRL_IRQLEV(port->id);
>
> ? ? ? ?if (edge & GPIO_INT_LEV_MASK)
> ? ? ? ? ? ? ? ?__raw_writel(nicename, addr + MXS_SET_ADDR);
> ? ? ? ?else
> ? ? ? ? ? ? ? ?__raw_writel(nicename, addr + MXS_CLR_ADDR);
>
You are more satisfied if I have the following in v6 patch, aren't you?
if (edge & GPIO_INT_LEV_MASK)
__raw_setl(nicename, addr);
else
__raw_clearl(nicename, addr);
Do we need namespace here? __mxs_setl/__mxs_clearl or
__mxs_raw_setl/__mxs_raw_clearl?
I suppose they will be inline functions in mxs.h.
--
Regards,
Shawn
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-10 10:24 ` Uwe Kleine-König
2010-12-10 15:42 ` Shawn Guo
@ 2010-12-13 7:28 ` Shawn Guo
2010-12-13 7:54 ` Lothar Waßmann
2010-12-13 7:57 ` Uwe Kleine-König
1 sibling, 2 replies; 12+ messages in thread
From: Shawn Guo @ 2010-12-13 7:28 UTC (permalink / raw)
To: linux-arm-kernel
Hi Uwe,
On Fri, Dec 10, 2010 at 03:24:16AM -0700, Uwe Kleine-K?nig wrote:
> Hello Shawn,
>
> On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
[...]
> > +int __init mxs_gpio_init(struct mxs_gpio_port *port, int cnt)
> > +{
> > + int i, j;
> > +
> > + /* save for local usage */
> > + mxs_gpio_ports = port;
> > + gpio_table_size = cnt;
> > +
> > + pr_info("MXS GPIO hardware\n");
> > +
> > + for (i = 0; i < cnt; i++) {
> > + /* disable the interrupt and clear the status */
> > + __raw_writel(0, port[i].base +
> > + PINCTRL_PIN2IRQ(i));
> > + __raw_writel(0, port[i].base +
> > + PINCTRL_IRQEN(i));
> > + __raw_writel(~0, port[i].base +
> > + PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
> Why not __raw_writel(0, port[i].base + PINCTRL_IRQSTAT(i)) ?
> (And note that applying ~ on a signed integer isn't portable in
> general. For all sane archs this is the same as ~0U though and ARM is
> sane (here), still I think it's good to be aware of such things and
> avoid them if easily possible.)
>
The i.MX28 RM section 9.4.78 tells "Software may clear any bit in this
register by writing a 1 to the bit at the SCT clear address".
What about writing 0xffffffff into clear address?
Regards,
Shawn
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-13 7:28 ` Shawn Guo
@ 2010-12-13 7:54 ` Lothar Waßmann
2010-12-13 7:57 ` Uwe Kleine-König
1 sibling, 0 replies; 12+ messages in thread
From: Lothar Waßmann @ 2010-12-13 7:54 UTC (permalink / raw)
To: linux-arm-kernel
Hi,
Shawn Guo writes:
> Hi Uwe,
>
> On Fri, Dec 10, 2010 at 03:24:16AM -0700, Uwe Kleine-K?nig wrote:
> > Hello Shawn,
> >
> > On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
> [...]
> > > +int __init mxs_gpio_init(struct mxs_gpio_port *port, int cnt)
> > > +{
> > > + int i, j;
> > > +
> > > + /* save for local usage */
> > > + mxs_gpio_ports = port;
> > > + gpio_table_size = cnt;
> > > +
> > > + pr_info("MXS GPIO hardware\n");
> > > +
> > > + for (i = 0; i < cnt; i++) {
> > > + /* disable the interrupt and clear the status */
> > > + __raw_writel(0, port[i].base +
> > > + PINCTRL_PIN2IRQ(i));
> > > + __raw_writel(0, port[i].base +
> > > + PINCTRL_IRQEN(i));
> > > + __raw_writel(~0, port[i].base +
> > > + PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
> > Why not __raw_writel(0, port[i].base + PINCTRL_IRQSTAT(i)) ?
> > (And note that applying ~ on a signed integer isn't portable in
> > general. For all sane archs this is the same as ~0U though and ARM is
> > sane (here), still I think it's good to be aware of such things and
> > avoid them if easily possible.)
> >
> The i.MX28 RM section 9.4.78 tells "Software may clear any bit in this
> register by writing a 1 to the bit at the SCT clear address".
>
> What about writing 0xffffffff into clear address?
>
When initializing a register it's much more straightforward to write a
zero into the register than to (ab)use the bitwise clear function.
Lothar Wa?mann
--
___________________________________________________________
Ka-Ro electronics GmbH | Pascalstra?e 22 | D - 52076 Aachen
Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10
Gesch?ftsf?hrer: Matthias Kaussen
Handelsregistereintrag: Amtsgericht Aachen, HRB 4996
www.karo-electronics.de | info at karo-electronics.de
___________________________________________________________
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-13 7:28 ` Shawn Guo
2010-12-13 7:54 ` Lothar Waßmann
@ 2010-12-13 7:57 ` Uwe Kleine-König
2010-12-13 8:10 ` Shawn Guo
1 sibling, 1 reply; 12+ messages in thread
From: Uwe Kleine-König @ 2010-12-13 7:57 UTC (permalink / raw)
To: linux-arm-kernel
Hi Shawn,
On Mon, Dec 13, 2010 at 03:28:14PM +0800, Shawn Guo wrote:
> On Fri, Dec 10, 2010 at 03:24:16AM -0700, Uwe Kleine-K?nig wrote:
> > On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
> > > + __raw_writel(~0, port[i].base +
> > > + PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
> > Why not __raw_writel(0, port[i].base + PINCTRL_IRQSTAT(i)) ?
> > (And note that applying ~ on a signed integer isn't portable in
> > general. For all sane archs this is the same as ~0U though and ARM is
> > sane (here), still I think it's good to be aware of such things and
> > avoid them if easily possible.)
> >
> The i.MX28 RM section 9.4.78 tells "Software may clear any bit in this
> register by writing a 1 to the bit at the SCT clear address".
I didn't say that __raw_writel(~0, ... + MXS_CLR_ADDR) didn't work.
It's just that I consider writing a 0 directly into the PINCTRL_IRQSTAT
register a bit more clear.
> What about writing 0xffffffff into clear address?
If you insist on doing that, at least write ~0U which is more portable.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-K?nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-13 7:57 ` Uwe Kleine-König
@ 2010-12-13 8:10 ` Shawn Guo
2010-12-13 8:19 ` Shawn Guo
0 siblings, 1 reply; 12+ messages in thread
From: Shawn Guo @ 2010-12-13 8:10 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Dec 13, 2010 at 12:57:38AM -0700, Uwe Kleine-K?nig wrote:
> Hi Shawn,
>
> On Mon, Dec 13, 2010 at 03:28:14PM +0800, Shawn Guo wrote:
> > On Fri, Dec 10, 2010 at 03:24:16AM -0700, Uwe Kleine-K?nig wrote:
> > > On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
> > > > + __raw_writel(~0, port[i].base +
> > > > + PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
> > > Why not __raw_writel(0, port[i].base + PINCTRL_IRQSTAT(i)) ?
> > > (And note that applying ~ on a signed integer isn't portable in
> > > general. For all sane archs this is the same as ~0U though and ARM is
> > > sane (here), still I think it's good to be aware of such things and
> > > avoid them if easily possible.)
> > >
> > The i.MX28 RM section 9.4.78 tells "Software may clear any bit in this
> > register by writing a 1 to the bit at the SCT clear address".
> I didn't say that __raw_writel(~0, ... + MXS_CLR_ADDR) didn't work.
> It's just that I consider writing a 0 directly into the PINCTRL_IRQSTAT
> register a bit more clear.
>
I thought software has to clear bit by writing clear address for this
register. Just confirmed with designer it's not necessary, writing 0
to register has the same effect as writing 1 to clear address.
So Uwe, Lothar, your suggestion is being taken. Thanks.
> > What about writing 0xffffffff into clear address?
> If you insist on doing that, at least write ~0U which is more portable.
>
Regards,
Shawn
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-13 8:10 ` Shawn Guo
@ 2010-12-13 8:19 ` Shawn Guo
2010-12-13 8:24 ` Uwe Kleine-König
0 siblings, 1 reply; 12+ messages in thread
From: Shawn Guo @ 2010-12-13 8:19 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Dec 13, 2010 at 01:10:22AM -0700, Guo Shawn-R65073 wrote:
> On Mon, Dec 13, 2010 at 12:57:38AM -0700, Uwe Kleine-K?nig wrote:
> > Hi Shawn,
> >
> > On Mon, Dec 13, 2010 at 03:28:14PM +0800, Shawn Guo wrote:
> > > On Fri, Dec 10, 2010 at 03:24:16AM -0700, Uwe Kleine-K?nig wrote:
> > > > On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
> > > > > + __raw_writel(~0, port[i].base +
> > > > > + PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
> > > > Why not __raw_writel(0, port[i].base + PINCTRL_IRQSTAT(i)) ?
> > > > (And note that applying ~ on a signed integer isn't portable in
> > > > general. For all sane archs this is the same as ~0U though and ARM is
> > > > sane (here), still I think it's good to be aware of such things and
> > > > avoid them if easily possible.)
> > > >
> > > The i.MX28 RM section 9.4.78 tells "Software may clear any bit in this
> > > register by writing a 1 to the bit at the SCT clear address".
> > I didn't say that __raw_writel(~0, ... + MXS_CLR_ADDR) didn't work.
> > It's just that I consider writing a 0 directly into the PINCTRL_IRQSTAT
> > register a bit more clear.
> >
> I thought software has to clear bit by writing clear address for this
> register. Just confirmed with designer it's not necessary, writing 0
> to register has the same effect as writing 1 to clear address.
>
> So Uwe, Lothar, your suggestion is being taken. Thanks.
>
I have to say sorry, as the designer just said the same word to me.
He took it for granted that writing 0 to the address can also clear
the status. But after checking the RTL code, he told me that
only writing clear address will work.
Regards,
Shawn
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v5 07/15] ARM: mxs: Add gpio support
2010-12-13 8:19 ` Shawn Guo
@ 2010-12-13 8:24 ` Uwe Kleine-König
0 siblings, 0 replies; 12+ messages in thread
From: Uwe Kleine-König @ 2010-12-13 8:24 UTC (permalink / raw)
To: linux-arm-kernel
Hi Shawn,
On Mon, Dec 13, 2010 at 04:19:41PM +0800, Shawn Guo wrote:
> On Mon, Dec 13, 2010 at 01:10:22AM -0700, Guo Shawn-R65073 wrote:
> > On Mon, Dec 13, 2010 at 12:57:38AM -0700, Uwe Kleine-K?nig wrote:
> > > On Mon, Dec 13, 2010 at 03:28:14PM +0800, Shawn Guo wrote:
> > > > On Fri, Dec 10, 2010 at 03:24:16AM -0700, Uwe Kleine-K?nig wrote:
> > > > > On Fri, Dec 10, 2010 at 04:06:40PM +0800, Shawn Guo wrote:
> > > > > > + __raw_writel(~0, port[i].base +
> > > > > > + PINCTRL_IRQSTAT(i) + MXS_CLR_ADDR);
> > > > > Why not __raw_writel(0, port[i].base + PINCTRL_IRQSTAT(i)) ?
> > > > > (And note that applying ~ on a signed integer isn't portable in
> > > > > general. For all sane archs this is the same as ~0U though and ARM is
> > > > > sane (here), still I think it's good to be aware of such things and
> > > > > avoid them if easily possible.)
> > > > >
> > > > The i.MX28 RM section 9.4.78 tells "Software may clear any bit in this
> > > > register by writing a 1 to the bit at the SCT clear address".
> > > I didn't say that __raw_writel(~0, ... + MXS_CLR_ADDR) didn't work.
> > > It's just that I consider writing a 0 directly into the PINCTRL_IRQSTAT
> > > register a bit more clear.
> > >
> > I thought software has to clear bit by writing clear address for this
> > register. Just confirmed with designer it's not necessary, writing 0
> > to register has the same effect as writing 1 to clear address.
> >
> > So Uwe, Lothar, your suggestion is being taken. Thanks.
> >
> I have to say sorry, as the designer just said the same word to me.
> He took it for granted that writing 0 to the address can also clear
> the status. But after checking the RTL code, he told me that
> only writing clear address will work.
Then add a comment and use ~0U please. And IMHO the reference manual
needs such a comment, too.
Uwe
--
Pengutronix e.K. | Uwe Kleine-K?nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2010-12-13 8:24 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-12-10 8:06 [PATCH v5 00/15] ARM: mxs: Add initial support for MX23 and MX28 Shawn Guo
2010-12-10 8:06 ` [PATCH v5 07/15] ARM: mxs: Add gpio support Shawn Guo
2010-12-10 10:24 ` Uwe Kleine-König
2010-12-10 15:42 ` Shawn Guo
2010-12-13 7:28 ` Shawn Guo
2010-12-13 7:54 ` Lothar Waßmann
2010-12-13 7:57 ` Uwe Kleine-König
2010-12-13 8:10 ` Shawn Guo
2010-12-13 8:19 ` Shawn Guo
2010-12-13 8:24 ` Uwe Kleine-König
2010-12-10 8:06 ` [PATCH v5 08/15] ARM: mxs: Add iomux support Shawn Guo
2010-12-10 8:06 ` [PATCH v5 09/15] ARM: mxs: Add clock support Shawn Guo
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