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* [GIT PULL] timer for tip/urgent
@ 2018-11-02 19:06 Daniel Lezcano
  2018-11-02 19:08 ` [PATCH 1/4] clocksource/drivers/c-sky: Add C-SKY SMP timer Daniel Lezcano
  2018-11-02 21:01 ` [GIT PULL] timer for tip/urgent Thomas Gleixner
  0 siblings, 2 replies; 7+ messages in thread
From: Daniel Lezcano @ 2018-11-02 19:06 UTC (permalink / raw)
  To: Thomas Gleixner; +Cc: Guo Ren, Linux Kernel Mailing List


Hi Thomas,

this is a late pull request for the c-sky clocksource and clockevent.
These are new drivers, they passed the review process several times for
the c-sky architecture.

 - Add the per cpu timer for the c-sky architecture (Guo Ren)

 - Add the global timer for the c-sky architecture (Guo Ren)

Thanks!

  -- Daniel

The following changes since commit 291d0e5d81e101392379217b06251fe8c27f1f80:

  Merge tag 'for-linus-20180929' of git://git.kernel.dk/linux-block
(2018-09-29 14:52:14 -0700)

are available in the git repository at:

  https://git.linaro.org/people/daniel.lezcano/linux.git
clockevents/4.20-rc1

for you to fetch changes up to ab1e77c3f590536b2659c097980efe6e8f713921:

  dt-bindings: timer: gx6605s SOC timer (2018-11-02 19:41:50 +0100)

----------------------------------------------------------------
Guo Ren (4):
      clocksource/drivers/c-sky: Add C-SKY SMP timer
      dt-bindings: timer: C-SKY Multi-processor timer
      clocksource/drivers/c-sky: Add gx6605s SOC system timer
      dt-bindings: timer: gx6605s SOC timer

 Documentation/devicetree/bindings/timer/csky,gx6605s-timer.txt |  42
++++++++++++++++++++++++++++++++++++++++++
 Documentation/devicetree/bindings/timer/csky,mptimer.txt       |  42
++++++++++++++++++++++++++++++++++++++++++
 drivers/clocksource/Kconfig                                    |  18
++++++++++++++++++
 drivers/clocksource/Makefile                                   |   2 ++
 drivers/clocksource/timer-gx6605s.c                            | 154
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/clocksource/timer-mp-csky.c                            | 173
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/cpuhotplug.h                                     |   1 +
 7 files changed, 432 insertions(+)
 create mode 100644
Documentation/devicetree/bindings/timer/csky,gx6605s-timer.txt
 create mode 100644 Documentation/devicetree/bindings/timer/csky,mptimer.txt
 create mode 100644 drivers/clocksource/timer-gx6605s.c
 create mode 100644 drivers/clocksource/timer-mp-csky.c

-- 
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Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
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^ permalink raw reply	[flat|nested] 7+ messages in thread

* [PATCH 1/4] clocksource/drivers/c-sky: Add C-SKY SMP timer
  2018-11-02 19:06 [GIT PULL] timer for tip/urgent Daniel Lezcano
@ 2018-11-02 19:08 ` Daniel Lezcano
  2018-11-02 19:08   ` [PATCH 2/4] dt-bindings: timer: C-SKY Multi-processor timer Daniel Lezcano
                     ` (2 more replies)
  2018-11-02 21:01 ` [GIT PULL] timer for tip/urgent Thomas Gleixner
  1 sibling, 3 replies; 7+ messages in thread
From: Daniel Lezcano @ 2018-11-02 19:08 UTC (permalink / raw)
  To: tglx; +Cc: linux-kernel, arnd, ren_guo

From: Guo Ren <ren_guo@c-sky.com>

The driver is for C-SKY SMP timer. It only supports oneshot event
and 32bit overflow for clocksource. Per cpu core has one timer and
all timers share one clock-counter-input from the same clocksource.

This use mfcr&mtcr instructions to access the regs.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 drivers/clocksource/Kconfig         |  10 +++
 drivers/clocksource/Makefile        |   1 +
 drivers/clocksource/timer-mp-csky.c | 173 ++++++++++++++++++++++++++++++++++++
 include/linux/cpuhotplug.h          |   1 +
 4 files changed, 185 insertions(+)
 create mode 100644 drivers/clocksource/timer-mp-csky.c

diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index a11f4ba..591c9a8 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -620,4 +620,14 @@ config RISCV_TIMER
 	  is accessed via both the SBI and the rdcycle instruction.  This is
 	  required for all RISC-V systems.
 
+config CSKY_MP_TIMER
+	bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
+	depends on CSKY
+	select TIMER_OF
+	help
+	  Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
+	  system.
+	  csky,mptimer is not only used in SMP system, it also could be used
+	  single core system. It's not a mmio reg and it use mtcr/mfcr instruction.
+
 endmenu
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index db51b24..5ce82d3 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -79,3 +79,4 @@ obj-$(CONFIG_CLKSRC_ST_LPC)		+= clksrc_st_lpc.o
 obj-$(CONFIG_X86_NUMACHIP)		+= numachip.o
 obj-$(CONFIG_ATCPIT100_TIMER)		+= timer-atcpit100.o
 obj-$(CONFIG_RISCV_TIMER)		+= riscv_timer.o
+obj-$(CONFIG_CSKY_MP_TIMER)		+= timer-mp-csky.o
diff --git a/drivers/clocksource/timer-mp-csky.c b/drivers/clocksource/timer-mp-csky.c
new file mode 100644
index 0000000..a8acc43
--- /dev/null
+++ b/drivers/clocksource/timer-mp-csky.c
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/sched_clock.h>
+#include <linux/cpu.h>
+#include <linux/of_irq.h>
+#include <asm/reg_ops.h>
+
+#include "timer-of.h"
+
+#define PTIM_CCVR	"cr<3, 14>"
+#define PTIM_CTLR	"cr<0, 14>"
+#define PTIM_LVR	"cr<6, 14>"
+#define PTIM_TSR	"cr<1, 14>"
+
+static int csky_mptimer_irq;
+
+static int csky_mptimer_set_next_event(unsigned long delta,
+				       struct clock_event_device *ce)
+{
+	mtcr(PTIM_LVR, delta);
+
+	return 0;
+}
+
+static int csky_mptimer_shutdown(struct clock_event_device *ce)
+{
+	mtcr(PTIM_CTLR, 0);
+
+	return 0;
+}
+
+static int csky_mptimer_oneshot(struct clock_event_device *ce)
+{
+	mtcr(PTIM_CTLR, 1);
+
+	return 0;
+}
+
+static int csky_mptimer_oneshot_stopped(struct clock_event_device *ce)
+{
+	mtcr(PTIM_CTLR, 0);
+
+	return 0;
+}
+
+static DEFINE_PER_CPU(struct timer_of, csky_to) = {
+	.flags					= TIMER_OF_CLOCK,
+	.clkevt = {
+		.rating				= 300,
+		.features			= CLOCK_EVT_FEAT_PERCPU |
+						  CLOCK_EVT_FEAT_ONESHOT,
+		.set_state_shutdown		= csky_mptimer_shutdown,
+		.set_state_oneshot		= csky_mptimer_oneshot,
+		.set_state_oneshot_stopped	= csky_mptimer_oneshot_stopped,
+		.set_next_event			= csky_mptimer_set_next_event,
+	},
+};
+
+static irqreturn_t csky_timer_interrupt(int irq, void *dev)
+{
+	struct timer_of *to = this_cpu_ptr(&csky_to);
+
+	mtcr(PTIM_TSR, 0);
+
+	to->clkevt.event_handler(&to->clkevt);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * clock event for percpu
+ */
+static int csky_mptimer_starting_cpu(unsigned int cpu)
+{
+	struct timer_of *to = per_cpu_ptr(&csky_to, cpu);
+
+	to->clkevt.cpumask = cpumask_of(cpu);
+
+	clockevents_config_and_register(&to->clkevt, timer_of_rate(to),
+					2, ULONG_MAX);
+
+	enable_percpu_irq(csky_mptimer_irq, 0);
+
+	return 0;
+}
+
+static int csky_mptimer_dying_cpu(unsigned int cpu)
+{
+	disable_percpu_irq(csky_mptimer_irq);
+
+	return 0;
+}
+
+/*
+ * clock source
+ */
+static u64 sched_clock_read(void)
+{
+	return (u64)mfcr(PTIM_CCVR);
+}
+
+static u64 clksrc_read(struct clocksource *c)
+{
+	return (u64)mfcr(PTIM_CCVR);
+}
+
+struct clocksource csky_clocksource = {
+	.name	= "csky",
+	.rating	= 400,
+	.mask	= CLOCKSOURCE_MASK(32),
+	.flags	= CLOCK_SOURCE_IS_CONTINUOUS,
+	.read	= clksrc_read,
+};
+
+static int __init csky_mptimer_init(struct device_node *np)
+{
+	int ret, cpu, cpu_rollback;
+	struct timer_of *to = NULL;
+
+	/*
+	 * Csky_mptimer is designed for C-SKY SMP multi-processors and
+	 * every core has it's own private irq and regs for clkevt and
+	 * clksrc.
+	 *
+	 * The regs is accessed by cpu instruction: mfcr/mtcr instead of
+	 * mmio map style. So we needn't mmio-address in dts, but we still
+	 * need to give clk and irq number.
+	 *
+	 * We use private irq for the mptimer and irq number is the same
+	 * for every core. So we use request_percpu_irq() in timer_of_init.
+	 */
+	csky_mptimer_irq = irq_of_parse_and_map(np, 0);
+	if (csky_mptimer_irq <= 0)
+		return -EINVAL;
+
+	ret = request_percpu_irq(csky_mptimer_irq, csky_timer_interrupt,
+				 "csky_mp_timer", &csky_to);
+	if (ret)
+		return -EINVAL;
+
+	for_each_possible_cpu(cpu) {
+		to = per_cpu_ptr(&csky_to, cpu);
+		ret = timer_of_init(np, to);
+		if (ret)
+			goto rollback;
+	}
+
+	clocksource_register_hz(&csky_clocksource, timer_of_rate(to));
+	sched_clock_register(sched_clock_read, 32, timer_of_rate(to));
+
+	ret = cpuhp_setup_state(CPUHP_AP_CSKY_TIMER_STARTING,
+				"clockevents/csky/timer:starting",
+				csky_mptimer_starting_cpu,
+				csky_mptimer_dying_cpu);
+	if (ret)
+		return -EINVAL;
+
+	return 0;
+
+rollback:
+	for_each_possible_cpu(cpu_rollback) {
+		if (cpu_rollback == cpu)
+			break;
+
+		to = per_cpu_ptr(&csky_to, cpu_rollback);
+		timer_of_cleanup(to);
+	}
+	return -EINVAL;
+}
+TIMER_OF_DECLARE(csky_mptimer, "csky,mptimer", csky_mptimer_init);
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index caf40ad..e0cd2ba 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -126,6 +126,7 @@ enum cpuhp_state {
 	CPUHP_AP_MIPS_GIC_TIMER_STARTING,
 	CPUHP_AP_ARC_TIMER_STARTING,
 	CPUHP_AP_RISCV_TIMER_STARTING,
+	CPUHP_AP_CSKY_TIMER_STARTING,
 	CPUHP_AP_KVM_STARTING,
 	CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING,
 	CPUHP_AP_KVM_ARM_VGIC_STARTING,
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 2/4] dt-bindings: timer: C-SKY Multi-processor timer
  2018-11-02 19:08 ` [PATCH 1/4] clocksource/drivers/c-sky: Add C-SKY SMP timer Daniel Lezcano
@ 2018-11-02 19:08   ` Daniel Lezcano
  2018-11-02 19:08   ` [PATCH 3/4] clocksource/drivers/c-sky: Add gx6605s SOC system timer Daniel Lezcano
  2018-11-02 19:08   ` [PATCH 4/4] dt-bindings: timer: gx6605s SOC timer Daniel Lezcano
  2 siblings, 0 replies; 7+ messages in thread
From: Daniel Lezcano @ 2018-11-02 19:08 UTC (permalink / raw)
  To: tglx; +Cc: linux-kernel, arnd, ren_guo

From: Guo Ren <ren_guo@c-sky.com>

Dt-bingdings doc for C-SKY SMP system setting.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 .../devicetree/bindings/timer/csky,mptimer.txt     | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/csky,mptimer.txt

diff --git a/Documentation/devicetree/bindings/timer/csky,mptimer.txt b/Documentation/devicetree/bindings/timer/csky,mptimer.txt
new file mode 100644
index 0000000..15cfec0
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/csky,mptimer.txt
@@ -0,0 +1,42 @@
+============================
+C-SKY Multi-processors Timer
+============================
+
+C-SKY multi-processors timer is designed for C-SKY SMP system and the
+regs is accessed by cpu co-processor 4 registers with mtcr/mfcr.
+
+ - PTIM_CTLR "cr<0, 14>" Control reg to start reset timer.
+ - PTIM_TSR  "cr<1, 14>" Interrupt cleanup status reg.
+ - PTIM_CCVR "cr<3, 14>" Current counter value reg.
+ - PTIM_LVR  "cr<6, 14>" Window value reg to triger next event.
+
+==============================
+timer node bindings definition
+==============================
+
+	Description: Describes SMP timer
+
+	PROPERTIES
+
+	- compatible
+		Usage: required
+		Value type: <string>
+		Definition: must be "csky,mptimer"
+	- clocks
+		Usage: required
+		Value type: <node>
+		Definition: must be input clk node
+	- interrupts
+		Usage: required
+		Value type: <u32>
+		Definition: must be timer irq num defined by soc
+
+Examples:
+---------
+
+	timer: timer {
+		compatible = "csky,mptimer";
+		clocks = <&dummy_apb_clk>;
+		interrupts = <16>;
+		interrupt-parent = <&intc>;
+	};
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 3/4] clocksource/drivers/c-sky: Add gx6605s SOC system timer
  2018-11-02 19:08 ` [PATCH 1/4] clocksource/drivers/c-sky: Add C-SKY SMP timer Daniel Lezcano
  2018-11-02 19:08   ` [PATCH 2/4] dt-bindings: timer: C-SKY Multi-processor timer Daniel Lezcano
@ 2018-11-02 19:08   ` Daniel Lezcano
  2018-11-02 19:08   ` [PATCH 4/4] dt-bindings: timer: gx6605s SOC timer Daniel Lezcano
  2 siblings, 0 replies; 7+ messages in thread
From: Daniel Lezcano @ 2018-11-02 19:08 UTC (permalink / raw)
  To: tglx; +Cc: linux-kernel, arnd, ren_guo

From: Guo Ren <ren_guo@c-sky.com>

The driver is for gx6605s SOC system timer and there are two
same timers in gx6605s. We use one for clkevt and another one for
clksrc.

The timer is mmio map to access, so we need give mmio address in dts.

The counter at 0x0  offset is clock event.
The counter at 0x40 offset is clock source.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 drivers/clocksource/Kconfig         |   8 ++
 drivers/clocksource/Makefile        |   1 +
 drivers/clocksource/timer-gx6605s.c | 154 ++++++++++++++++++++++++++++++++++++
 3 files changed, 163 insertions(+)
 create mode 100644 drivers/clocksource/timer-gx6605s.c

diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 591c9a8..55c77e4 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -630,4 +630,12 @@ config CSKY_MP_TIMER
 	  csky,mptimer is not only used in SMP system, it also could be used
 	  single core system. It's not a mmio reg and it use mtcr/mfcr instruction.
 
+config GX6605S_TIMER
+	bool "Gx6605s SOC system timer driver" if COMPILE_TEST
+	depends on CSKY
+	select CLKSRC_MMIO
+	select TIMER_OF
+	help
+	  This option enables support for gx6605s SOC's timer.
+
 endmenu
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 5ce82d3..9196331 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -80,3 +80,4 @@ obj-$(CONFIG_X86_NUMACHIP)		+= numachip.o
 obj-$(CONFIG_ATCPIT100_TIMER)		+= timer-atcpit100.o
 obj-$(CONFIG_RISCV_TIMER)		+= riscv_timer.o
 obj-$(CONFIG_CSKY_MP_TIMER)		+= timer-mp-csky.o
+obj-$(CONFIG_GX6605S_TIMER)		+= timer-gx6605s.o
diff --git a/drivers/clocksource/timer-gx6605s.c b/drivers/clocksource/timer-gx6605s.c
new file mode 100644
index 0000000..80d0939
--- /dev/null
+++ b/drivers/clocksource/timer-gx6605s.c
@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/sched_clock.h>
+
+#include "timer-of.h"
+
+#define CLKSRC_OFFSET	0x40
+
+#define TIMER_STATUS	0x00
+#define TIMER_VALUE	0x04
+#define TIMER_CONTRL	0x10
+#define TIMER_CONFIG	0x20
+#define TIMER_DIV	0x24
+#define TIMER_INI	0x28
+
+#define GX6605S_STATUS_CLR	BIT(0)
+#define GX6605S_CONTRL_RST	BIT(0)
+#define GX6605S_CONTRL_START	BIT(1)
+#define GX6605S_CONFIG_EN	BIT(0)
+#define GX6605S_CONFIG_IRQ_EN	BIT(1)
+
+static irqreturn_t gx6605s_timer_interrupt(int irq, void *dev)
+{
+	struct clock_event_device *ce = dev;
+	void __iomem *base = timer_of_base(to_timer_of(ce));
+
+	writel_relaxed(GX6605S_STATUS_CLR, base + TIMER_STATUS);
+
+	ce->event_handler(ce);
+
+	return IRQ_HANDLED;
+}
+
+static int gx6605s_timer_set_oneshot(struct clock_event_device *ce)
+{
+	void __iomem *base = timer_of_base(to_timer_of(ce));
+
+	/* reset and stop counter */
+	writel_relaxed(GX6605S_CONTRL_RST, base + TIMER_CONTRL);
+
+	/* enable with irq and start */
+	writel_relaxed(GX6605S_CONFIG_EN | GX6605S_CONFIG_IRQ_EN,
+		       base + TIMER_CONFIG);
+
+	return 0;
+}
+
+static int gx6605s_timer_set_next_event(unsigned long delta,
+					struct clock_event_device *ce)
+{
+	void __iomem *base = timer_of_base(to_timer_of(ce));
+
+	/* use reset to pause timer */
+	writel_relaxed(GX6605S_CONTRL_RST, base + TIMER_CONTRL);
+
+	/* config next timeout value */
+	writel_relaxed(ULONG_MAX - delta, base + TIMER_INI);
+	writel_relaxed(GX6605S_CONTRL_START, base + TIMER_CONTRL);
+
+	return 0;
+}
+
+static int gx6605s_timer_shutdown(struct clock_event_device *ce)
+{
+	void __iomem *base = timer_of_base(to_timer_of(ce));
+
+	writel_relaxed(0, base + TIMER_CONTRL);
+	writel_relaxed(0, base + TIMER_CONFIG);
+
+	return 0;
+}
+
+static struct timer_of to = {
+	.flags = TIMER_OF_IRQ | TIMER_OF_BASE | TIMER_OF_CLOCK,
+	.clkevt = {
+		.rating			= 300,
+		.features		= CLOCK_EVT_FEAT_DYNIRQ |
+					  CLOCK_EVT_FEAT_ONESHOT,
+		.set_state_shutdown	= gx6605s_timer_shutdown,
+		.set_state_oneshot	= gx6605s_timer_set_oneshot,
+		.set_next_event		= gx6605s_timer_set_next_event,
+		.cpumask		= cpu_possible_mask,
+	},
+	.of_irq = {
+		.handler		= gx6605s_timer_interrupt,
+		.flags			= IRQF_TIMER | IRQF_IRQPOLL,
+	},
+};
+
+static u64 notrace gx6605s_sched_clock_read(void)
+{
+	void __iomem *base;
+
+	base = timer_of_base(&to) + CLKSRC_OFFSET;
+
+	return (u64)readl_relaxed(base + TIMER_VALUE);
+}
+
+static void gx6605s_clkevt_init(void __iomem *base)
+{
+	writel_relaxed(0, base + TIMER_DIV);
+	writel_relaxed(0, base + TIMER_CONFIG);
+
+	clockevents_config_and_register(&to.clkevt, timer_of_rate(&to), 2,
+					ULONG_MAX);
+}
+
+static int gx6605s_clksrc_init(void __iomem *base)
+{
+	writel_relaxed(0, base + TIMER_DIV);
+	writel_relaxed(0, base + TIMER_INI);
+
+	writel_relaxed(GX6605S_CONTRL_RST, base + TIMER_CONTRL);
+
+	writel_relaxed(GX6605S_CONFIG_EN, base + TIMER_CONFIG);
+
+	writel_relaxed(GX6605S_CONTRL_START, base + TIMER_CONTRL);
+
+	sched_clock_register(gx6605s_sched_clock_read, 32, timer_of_rate(&to));
+
+	return clocksource_mmio_init(base + TIMER_VALUE, "gx6605s",
+			timer_of_rate(&to), 200, 32, clocksource_mmio_readl_up);
+}
+
+static int __init gx6605s_timer_init(struct device_node *np)
+{
+	int ret;
+
+	/*
+	 * The timer driver is for nationalchip gx6605s SOC and there are two
+	 * same timer in gx6605s. We use one for clkevt and another for clksrc.
+	 *
+	 * The timer is mmio map to access, so we need give mmio address in dts.
+	 *
+	 * It provides a 32bit countup timer and interrupt will be caused by
+	 * count-overflow.
+	 * So we need set-next-event by ULONG_MAX - delta in TIMER_INI reg.
+	 *
+	 * The counter at 0x0  offset is clock event.
+	 * The counter at 0x40 offset is clock source.
+	 * They are the same in hardware, just different used by driver.
+	 */
+	ret = timer_of_init(np, &to);
+	if (ret)
+		return ret;
+
+	gx6605s_clkevt_init(timer_of_base(&to));
+
+	return gx6605s_clksrc_init(timer_of_base(&to) + CLKSRC_OFFSET);
+}
+TIMER_OF_DECLARE(csky_gx6605s_timer, "csky,gx6605s-timer", gx6605s_timer_init);
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 4/4] dt-bindings: timer: gx6605s SOC timer
  2018-11-02 19:08 ` [PATCH 1/4] clocksource/drivers/c-sky: Add C-SKY SMP timer Daniel Lezcano
  2018-11-02 19:08   ` [PATCH 2/4] dt-bindings: timer: C-SKY Multi-processor timer Daniel Lezcano
  2018-11-02 19:08   ` [PATCH 3/4] clocksource/drivers/c-sky: Add gx6605s SOC system timer Daniel Lezcano
@ 2018-11-02 19:08   ` Daniel Lezcano
  2 siblings, 0 replies; 7+ messages in thread
From: Daniel Lezcano @ 2018-11-02 19:08 UTC (permalink / raw)
  To: tglx; +Cc: linux-kernel, arnd, ren_guo

From: Guo Ren <ren_guo@c-sky.com>

Dt-bindings doc for gx6605s SOC's system timer.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 .../bindings/timer/csky,gx6605s-timer.txt          | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/csky,gx6605s-timer.txt

diff --git a/Documentation/devicetree/bindings/timer/csky,gx6605s-timer.txt b/Documentation/devicetree/bindings/timer/csky,gx6605s-timer.txt
new file mode 100644
index 0000000..6b04344
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/csky,gx6605s-timer.txt
@@ -0,0 +1,42 @@
+=================
+gx6605s SOC Timer
+=================
+
+The timer is used in gx6605s soc as system timer and the driver
+contain clk event and clk source.
+
+==============================
+timer node bindings definition
+==============================
+
+	Description: Describes gx6605s SOC timer
+
+	PROPERTIES
+
+	- compatible
+		Usage: required
+		Value type: <string>
+		Definition: must be "csky,gx6605s-timer"
+	- reg
+		Usage: required
+		Value type: <u32 u32>
+		Definition: <phyaddr size> in soc from cpu view
+	- clocks
+		Usage: required
+		Value type: phandle + clock specifier cells
+		Definition: must be input clk node
+	- interrupt
+		Usage: required
+		Value type: <u32>
+		Definition: must be timer irq num defined by soc
+
+Examples:
+---------
+
+	timer0: timer@20a000 {
+		compatible = "csky,gx6605s-timer";
+		reg = <0x0020a000 0x400>;
+		clocks = <&dummy_apb_clk>;
+		interrupts = <10>;
+		interrupt-parent = <&intc>;
+	};
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 7+ messages in thread

* Re: [GIT PULL] timer for tip/urgent
  2018-11-02 19:06 [GIT PULL] timer for tip/urgent Daniel Lezcano
  2018-11-02 19:08 ` [PATCH 1/4] clocksource/drivers/c-sky: Add C-SKY SMP timer Daniel Lezcano
@ 2018-11-02 21:01 ` Thomas Gleixner
  2018-11-02 22:59   ` Daniel Lezcano
  1 sibling, 1 reply; 7+ messages in thread
From: Thomas Gleixner @ 2018-11-02 21:01 UTC (permalink / raw)
  To: Daniel Lezcano; +Cc: Guo Ren, Linux Kernel Mailing List

Daniel,

On Fri, 2 Nov 2018, Daniel Lezcano wrote:

> this is a late pull request for the c-sky clocksource and clockevent.
> These are new drivers, they passed the review process several times for
> the c-sky architecture.
> 
>  - Add the per cpu timer for the c-sky architecture (Guo Ren)
> 
>  - Add the global timer for the c-sky architecture (Guo Ren)

Pulled. Can you please tag your pull requests in future and add the above
short summary into the tag. That automatically creates a merge commit and I
get the summary right into it.

Thanks,

	tglx

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [GIT PULL] timer for tip/urgent
  2018-11-02 21:01 ` [GIT PULL] timer for tip/urgent Thomas Gleixner
@ 2018-11-02 22:59   ` Daniel Lezcano
  0 siblings, 0 replies; 7+ messages in thread
From: Daniel Lezcano @ 2018-11-02 22:59 UTC (permalink / raw)
  To: Thomas Gleixner; +Cc: Guo Ren, Linux Kernel Mailing List

On 02/11/2018 22:01, Thomas Gleixner wrote:
> Daniel,
> 
> On Fri, 2 Nov 2018, Daniel Lezcano wrote:
> 
>> this is a late pull request for the c-sky clocksource and clockevent.
>> These are new drivers, they passed the review process several times for
>> the c-sky architecture.
>>
>>  - Add the per cpu timer for the c-sky architecture (Guo Ren)
>>
>>  - Add the global timer for the c-sky architecture (Guo Ren)
> 
> Pulled. Can you please tag your pull requests in future and add the above
> short summary into the tag. That automatically creates a merge commit and I
> get the summary right into it.

Ok, will do next time.

-- 
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^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2018-11-02 22:59 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-11-02 19:06 [GIT PULL] timer for tip/urgent Daniel Lezcano
2018-11-02 19:08 ` [PATCH 1/4] clocksource/drivers/c-sky: Add C-SKY SMP timer Daniel Lezcano
2018-11-02 19:08   ` [PATCH 2/4] dt-bindings: timer: C-SKY Multi-processor timer Daniel Lezcano
2018-11-02 19:08   ` [PATCH 3/4] clocksource/drivers/c-sky: Add gx6605s SOC system timer Daniel Lezcano
2018-11-02 19:08   ` [PATCH 4/4] dt-bindings: timer: gx6605s SOC timer Daniel Lezcano
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2018-11-02 22:59   ` Daniel Lezcano

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