ARM: rockchip: decrease the wait time for resume

The register-default delay time for wait the 24MHz OSC stabilization as well
as PMU stabilization is 750ms, let's decrease them to a still safe 30ms.

Signed-off-by: Chris Zhong <[email protected]>
Reviewed-by: Doug Anderson <[email protected]>
Tested-by: Doug Anderson <[email protected]>
Signed-off-by: Heiko Stuebner <[email protected]>

diff --git a/arch/arm/mach-rockchip/pm.c b/arch/arm/mach-rockchip/pm.c
index 50cb781aaa36c97f9b2f905a0e1e3076421b5654..a3ab3979923cd36a08000872b8a8f5780ab32ace 100644 (file)
--- a/arch/arm/mach-rockchip/pm.c
+++ b/arch/arm/mach-rockchip/pm.c
@@ -209,6 +209,9 @@ static int rk3288_suspend_init(struct device_node *np)
        memcpy(rk3288_bootram_base, rockchip_slp_cpu_resume,
               rk3288_bootram_sz);
 
+       regmap_write(pmu_regmap, RK3288_PMU_OSC_CNT, OSC_STABL_CNT_THRESH);
+       regmap_write(pmu_regmap, RK3288_PMU_STABL_CNT, PMU_STABL_CNT_THRESH);
+
        return 0;
 }
 

diff --git a/arch/arm/mach-rockchip/pm.h b/arch/arm/mach-rockchip/pm.h
index 7c889c04604b5ec0d9faaec30d0b612275c4cda4..91a542df579177e76432c92217630e8412b1ddf4 100644 (file)
--- a/arch/arm/mach-rockchip/pm.h
+++ b/arch/arm/mach-rockchip/pm.h
@@ -63,6 +63,10 @@ static inline void rockchip_suspend_init(void)
 /* PMU_WAKEUP_CFG1 bits */
 #define PMU_ARMINT_WAKEUP_EN           BIT(0)
 
+/* wait 30ms for OSC stable and 30ms for pmic stable */
+#define OSC_STABL_CNT_THRESH   (32 * 30)
+#define PMU_STABL_CNT_THRESH   (32 * 30)
+
 enum rk3288_pwr_mode_con {
        PMU_PWR_MODE_EN = 0,
        PMU_CLK_CORE_SRC_GATE_EN,