diff options
| author | Tomasz Figa <t.figa@samsung.com> | 2012-11-21 15:21:08 (GMT) |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-11-21 15:38:57 (GMT) |
| commit | 2ed5f236716cbd20f51bdc87ddd91bad259c81a6 (patch) | |
| tree | ae6451f3e8418d00aec218afdc34aa027c2cfbea /arch/arm/mach-exynos/pm_domains.c | |
| parent | cf7c397b62b1afa6d17c890641d067d5999daeb9 (diff) | |
| download | linux-fsl-qoriq-2ed5f236716cbd20f51bdc87ddd91bad259c81a6.tar.xz | |
ARM: EXYNOS: Detect power domain state on registration from DT
Initial state of power domains might vary on different boards and with
different bootloaders.
This patch adds detection of initial state of power domains when being
registered from DT.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos/pm_domains.c')
| -rw-r--r-- | arch/arm/mach-exynos/pm_domains.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index c0bc83a..d1abc1a 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -89,6 +89,7 @@ static __init int exynos_pm_dt_parse_domains(void) for_each_compatible_node(np, NULL, "samsung,exynos4210-pd") { struct exynos_pm_domain *pd; + int on; pd = kzalloc(sizeof(*pd), GFP_KERNEL); if (!pd) { @@ -97,14 +98,15 @@ static __init int exynos_pm_dt_parse_domains(void) return -ENOMEM; } - if (of_get_property(np, "samsung,exynos4210-pd-off", NULL)) - pd->is_off = true; pd->name = np->name; pd->base = of_iomap(np, 0); pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; pd->pd.of_node = np; - pm_genpd_init(&pd->pd, NULL, false); + + on = __raw_readl(pd->base + 0x4) & S5P_INT_LOCAL_PWR_EN; + + pm_genpd_init(&pd->pd, NULL, !on); } return 0; } |