iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: exynos: Move Exynos542x CPU state reset to pm_prepare()

Browse Source 
Reset the CPU state entry in sysram in pm_prepare() callback. That entry
doesn't need to be reset for every suspended CPU, so make it symmetic
with the code, which restores it in pm_resume() callback.

Tested on Samsung Chromebook2 Pit (Exynos5420) and Pi (Exynos5800)
boards.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This commit is contained in:
Marek Szyprowski 2019-02-18 15:34:09 +01:00 committed by Krzysztof Kozlowski
parent 9e98c678c2
commit e74673120b
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/mach-exynos/suspend.c
View File

@ -265,8 +265,6 @@ static int exynos5420_cpu_suspend(unsigned long arg)
unsigned int cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
unsigned int cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
writel_relaxed(0x0, pm_state.sysram_base + EXYNOS5420_CPU_STATE);
if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM)) {
mcpm_set_entry_vector(cpu, cluster, exynos_cpu_resume);
mcpm_cpu_suspend();
@ -341,6 +339,7 @@ static void exynos5420_pm_prepare(void)
*/
pm_state.cpu_state = readl_relaxed(pm_state.sysram_base +
EXYNOS5420_CPU_STATE);
writel_relaxed(0x0, pm_state.sysram_base + EXYNOS5420_CPU_STATE);
exynos_pm_enter_sleep_mode();