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ARM: rockchip: restore dapswjdp after suspend

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In the commit (0ea001d ARM: rockchip: disable dapswjdp during suspend)
we made the assumption that we didn't need to restore dapswjdp after
suspend because "the MASKROM will enable it back".

It turns out that's not a safe assumption.  In some cases (pending
interrupts) it's possible that the WFI might act as a no-op and the
MaskROM will never run.  Since we're changing the bit, we should
restore it ourselves.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Doug Anderson 2015-05-20 13:34:08 -07:00 committed by Heiko Stuebner
parent d770e558e2
commit 3393940311
1 changed files with 5 additions and 0 deletions
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5
arch/arm/mach-rockchip/pm.c
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@ -48,6 +48,7 @@ static struct regmap *sgrf_regmap;
static u32 rk3288_pmu_pwr_mode_con;
static u32 rk3288_sgrf_soc_con0;
static u32 rk3288_sgrf_cpu_con0;
static inline u32 rk3288_l2_config(void)
{
@ -70,6 +71,7 @@ static void rk3288_slp_mode_set(int level)
{
u32 mode_set, mode_set1;
regmap_read(sgrf_regmap, RK3288_SGRF_CPU_CON0, &rk3288_sgrf_cpu_con0);
regmap_read(sgrf_regmap, RK3288_SGRF_SOC_CON0, &rk3288_sgrf_soc_con0);
regmap_read(pmu_regmap, RK3288_PMU_PWRMODE_CON,
@ -129,6 +131,9 @@ static void rk3288_slp_mode_set(int level)
static void rk3288_slp_mode_set_resume(void)
{
regmap_write(sgrf_regmap, RK3288_SGRF_CPU_CON0,
rk3288_sgrf_cpu_con0 | SGRF_DAPDEVICEEN_WRITE);
regmap_write(pmu_regmap, RK3288_PMU_PWRMODE_CON,
rk3288_pmu_pwr_mode_con);