All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ye.Li <B37916@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/4] imx: mx6slevk: Add I2C1 support
Date: Wed, 10 Sep 2014 17:08:14 +0800	[thread overview]
Message-ID: <1410340097-19804-1-git-send-email-B37916@freescale.com> (raw)

Add I2C1 pin and pad settings, and enable the MXC I2C driver.

Signed-off-by: Ye.Li <B37916@freescale.com>
---
 arch/arm/include/asm/arch-mx6/mx6sl_pins.h |    5 +++++
 board/freescale/mx6slevk/mx6slevk.c        |   26 ++++++++++++++++++++++++++
 include/configs/mx6slevk.h                 |    6 ++++++
 3 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
index 045ccc4..ac84270 100644
--- a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
+++ b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
@@ -34,5 +34,10 @@ enum {
 	MX6_PAD_FEC_REF_CLK__FEC_REF_OUT			= IOMUX_PAD(0x424, 0x134, 0x10, 0x000, 0, 0),
 	MX6_PAD_FEC_RX_ER__GPIO_4_19				= IOMUX_PAD(0x0428, 0x0138, 5, 0x0000, 0, 0),
 	MX6_PAD_FEC_TX_CLK__GPIO_4_21				= IOMUX_PAD(0x0434, 0x0144, 5, 0x0000, 0, 0),
+
+	MX6_PAD_I2C1_SDA__I2C1_SDA					= IOMUX_PAD(0x0450, 0x0160, 0x10, 0x0720, 2, 0),
+	MX6_PAD_I2C1_SDA__GPIO_3_13					= IOMUX_PAD(0x0450, 0x0160, 5, 0x0000, 0, 0),
+	MX6_PAD_I2C1_SCL__I2C1_SCL					= IOMUX_PAD(0x044C, 0x015C, 0x10, 0x071C, 2, 0),
+	MX6_PAD_I2C1_SCL__GPIO_3_12					= IOMUX_PAD(0x044C, 0x015C, 5, 0x0000, 0, 0),
 };
 #endif	/* __ASM_ARCH_MX6_MX6SL_PINS_H__ */
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index a990b4c..fedd5c3 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -13,12 +13,14 @@
 #include <asm/arch/sys_proto.h>
 #include <asm/gpio.h>
 #include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/mxc_i2c.h>
 #include <asm/io.h>
 #include <linux/sizes.h>
 #include <common.h>
 #include <fsl_esdhc.h>
 #include <mmc.h>
 #include <netdev.h>
+#include <i2c.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -37,8 +39,29 @@ DECLARE_GLOBAL_DATA_PTR;
 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
 		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
 
+#define I2C_PAD_CTRL    (PAD_CTL_PKE | PAD_CTL_PUE |            \
+	PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
+	PAD_CTL_DSE_40ohm | PAD_CTL_HYS |			\
+	PAD_CTL_ODE | PAD_CTL_SRE_FAST)
+
 #define ETH_PHY_RESET	IMX_GPIO_NR(4, 21)
 
+#define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
+
+/* I2C1 for PMIC */
+struct i2c_pads_info i2c_pad_info0 = {
+	.sda = {
+		.i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC,
+		.gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC,
+		.gp = IMX_GPIO_NR(3, 13),
+	},
+	.scl = {
+		.i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC,
+		.gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC,
+		.gp = IMX_GPIO_NR(3, 12),
+	},
+};
+
 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -162,6 +185,9 @@ int board_init(void)
 #ifdef	CONFIG_FEC_MXC
 	setup_fec();
 #endif
+
+	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
+
 	return 0;
 }
 
diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
index 3d05a64..bf5066f 100644
--- a/include/configs/mx6slevk.h
+++ b/include/configs/mx6slevk.h
@@ -60,6 +60,12 @@
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_SMSC
 
+/* I2C Configs */
+#define CONFIG_CMD_I2C
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_I2C_SPEED		  100000
+
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_CONS_INDEX		1
-- 
1.7.4.1

             reply	other threads:[~2014-09-10  9:08 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-10  9:08 Ye.Li [this message]
2014-09-10  9:08 ` [U-Boot] [PATCH 2/4] imx: mx6slevk: Add PMIC Pfuze support Ye.Li
2014-10-30 10:36   ` Stefano Babic
2014-11-04  9:24     ` Li Ye-B37916
2014-11-04  9:37       ` Li Ye-B37916
2014-11-04 14:09         ` Przemyslaw Marczak
2014-11-05  8:28           ` Li Ye-B37916
2014-11-05  9:27             ` Przemyslaw Marczak
2014-11-04 15:56   ` Przemyslaw Marczak
2014-11-05  8:33     ` Li Ye-B37916
2014-11-05  9:41       ` Przemyslaw Marczak
2014-12-22 12:25       ` Fabio Estevam
2014-09-10  9:08 ` [U-Boot] [PATCH 3/4] imx: mx6sabresd: Add clear print for pfuze200 Ye.Li
2014-09-10  9:08 ` [U-Boot] [PATCH 4/4] imx: mx6: Set Pfuze mode to decrease power number for DSM Ye.Li
2014-09-10 12:14   ` Fabio Estevam
2014-11-04 15:57   ` Przemyslaw Marczak
2014-11-05  9:34     ` Li Ye-B37916

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1410340097-19804-1-git-send-email-B37916@freescale.com \
    --to=b37916@freescale.com \
    --cc=u-boot@lists.denx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.