diff options
| author | Alex Frid <afrid@nvidia.com> | 2012-01-25 15:23:25 -0800 |
|---|---|---|
| committer | Rohan Somvanshi <rsomvanshi@nvidia.com> | 2012-01-31 04:40:06 -0800 |
| commit | 0bd4446fc7dac4d4a083706b3f411f2926bc8e9f (patch) | |
| tree | 3d3da9af50e6f735efa35c72842c9cb592e2f18c /arch | |
| parent | d8c04668f8289df0218d34bc386c4e96fc795fd0 (diff) | |
ARM: tegra: power: Set awake system CPU rate floor
Set CPU rate floor to 100MHz when the system is awake (after boot,
or on late resume). Remove the floor when the system enters early
suspend.
Bug 922351
Reviewed-on: http://git-master/r/77444
Change-Id: I68f54a3d981c1cbeac16d58d3beb6e3aa6bf190c
Signed-off-by: Alex Frid <afrid@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/78031
Reviewed-by: Rohan Somvanshi <rsomvanshi@nvidia.com>
Tested-by: Rohan Somvanshi <rsomvanshi@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/pm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c index 803ce0762fcf..61a93eead6da 100644 --- a/arch/arm/mach-tegra/pm.c +++ b/arch/arm/mach-tegra/pm.c @@ -42,6 +42,7 @@ #include <linux/vmalloc.h> #include <linux/memblock.h> #include <linux/console.h> +#include <linux/pm_qos_params.h> #include <asm/cacheflush.h> #include <asm/cpu_pm.h> @@ -168,6 +169,9 @@ struct suspend_context tegra_sctx; #define MC_SECURITY_SIZE 0x70 #define MC_SECURITY_CFG2 0x7c +#define AWAKE_CPU_FREQ_MIN 100000 +static struct pm_qos_request_list awake_cpu_freq_req; + struct dvfs_rail *tegra_cpu_rail; static struct dvfs_rail *tegra_core_rail; static struct clk *tegra_pclk; @@ -1021,6 +1025,9 @@ void __init tegra_init_suspend(struct tegra_suspend_platform_data *plat) tegra_cpu_rail = tegra_dvfs_get_rail_by_name("vdd_cpu"); tegra_core_rail = tegra_dvfs_get_rail_by_name("vdd_core"); + pm_qos_add_request(&awake_cpu_freq_req, PM_QOS_CPU_FREQ_MIN, + AWAKE_CPU_FREQ_MIN); + tegra_pclk = clk_get_sys(NULL, "pclk"); BUG_ON(IS_ERR(tegra_pclk)); pdata = plat; @@ -1266,12 +1273,14 @@ static void pm_early_suspend(struct early_suspend *h) { if (clk_wake) clk_disable(clk_wake); + pm_qos_update_request(&awake_cpu_freq_req, PM_QOS_DEFAULT_VALUE); } static void pm_late_resume(struct early_suspend *h) { if (clk_wake) clk_enable(clk_wake); + pm_qos_update_request(&awake_cpu_freq_req, (s32)AWAKE_CPU_FREQ_MIN); } static struct early_suspend pm_early_suspender = { |