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ARM: shmobile: Add r8a7790 CMT00 clock event 

Add clock event support for CMT0 timer channel 0
to the r8a7790 SoC code. On most ARM mach-shmobile
the CMT is hooked up to a 32KHz clock but on r8a7790
a 31.7KHz clock is instead used.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm 2013-06-28 20:27:04 +09:00 committed by Simon Horman
parent 29eb2ba89c
commit 99ade1a0f0
2 changed files with 26 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/mach-shmobile/clock-r8a7790.c
View File

@ -47,6 +47,7 @@
#define CPG_BASE 0xe6150000
#define CPG_LEN 0x1000
#define SMSTPCR1 0xe6150134
#define SMSTPCR2 0xe6150138
#define SMSTPCR3 0xe615013c
#define SMSTPCR5 0xe6150144
@ -186,6 +187,7 @@ enum {
MSTP522,
MSTP315, MSTP314, MSTP313, MSTP312, MSTP311, MSTP305, MSTP304,
MSTP216, MSTP207, MSTP206, MSTP204, MSTP203, MSTP202,
MSTP124,
MSTP_NR
};
@ -208,6 +210,7 @@ static struct clk mstp_clks[MSTP_NR] = {
[MSTP204] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 4, 0), /* SCIFA0 */
[MSTP203] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 3, 0), /* SCIFA1 */
[MSTP202] = SH_CLK_MSTP32(&mp_clk, SMSTPCR2, 2, 0), /* SCIFA2 */
[MSTP124] = SH_CLK_MSTP32(&rclk_clk, SMSTPCR1, 24, 0), /* CMT0 */
};
static struct clk_lookup lookups[] = {
@ -270,6 +273,7 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("sh_mobile_sdhi.3", &mstp_clks[MSTP311]),
CLKDEV_DEV_ID("ee220000.mmcif", &mstp_clks[MSTP305]),
CLKDEV_DEV_ID("sh_mmcif.1", &mstp_clks[MSTP305]),
CLKDEV_DEV_ID("sh_cmt.0", &mstp_clks[MSTP124]),
};
#define R8A7790_CLOCK_ROOT(e, m, p0, p1, p30, p31) \

23
arch/arm/mach-shmobile/setup-r8a7790.c
View File

@ -21,9 +21,10 @@
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/of_platform.h>
#include <linux/serial_sci.h>
#include <linux/platform_data/gpio-rcar.h>
#include <linux/platform_data/irq-renesas-irqc.h>
#include <linux/serial_sci.h>
#include <linux/sh_timer.h>
#include <mach/common.h>
#include <mach/irqs.h>
#include <mach/r8a7790.h>
@ -159,6 +160,25 @@ static struct resource thermal_resources[] __initdata = {
thermal_resources, \
ARRAY_SIZE(thermal_resources))
static struct sh_timer_config cmt00_platform_data = {
.name = "CMT00",
.timer_bit = 0,
.clockevent_rating = 80,
};
static struct resource cmt00_resources[] = {
DEFINE_RES_MEM(0xffca0510, 0x0c),
DEFINE_RES_MEM(0xffca0500, 0x04),
DEFINE_RES_IRQ(gic_spi(142)), /* CMT0_0 */
};
#define r8a7790_register_cmt(idx) \
platform_device_register_resndata(&platform_bus, "sh_cmt", \
idx, cmt##idx##_resources, \
ARRAY_SIZE(cmt##idx##_resources), \
&cmt##idx##_platform_data, \
sizeof(struct sh_timer_config))
void __init r8a7790_add_standard_devices(void)
{
r8a7790_register_scif(SCIFA0);
@ -173,6 +193,7 @@ void __init r8a7790_add_standard_devices(void)
r8a7790_register_scif(HSCIF1);
r8a7790_register_irqc(0);
r8a7790_register_thermal();
r8a7790_register_cmt(00);
}
void __init r8a7790_timer_init(void)