From af8d30ac64e1ddef50981dc039f5773f57338b1a Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Wed, 21 Feb 2018 11:15:22 +0100 Subject: [PATCH] soc: samsung: pm_domains: Add blacklisting clock handling Handling of clock reparenting will be move to clock controller driver, so add possibility to blacklist clock handling on systems, where the clock controller already does all needed operations. This is needed to avoid potential deadlock on clock reparenting during power domain on/off procedure. Signed-off-by: Marek Szyprowski Reviewed-by: Krzysztof Kozlowski Signed-off-by: Sylwester Nawrocki --- drivers/soc/samsung/pm_domains.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/soc/samsung/pm_domains.c b/drivers/soc/samsung/pm_domains.c index b6a4365..cef30bd 100644 --- a/drivers/soc/samsung/pm_domains.c +++ b/drivers/soc/samsung/pm_domains.c @@ -147,6 +147,9 @@ static __init const char *exynos_get_domain_name(struct device_node *node) return kstrdup_const(name, GFP_KERNEL); } +static const char *soc_force_no_clk[] = { +}; + static __init int exynos4_pm_init_power_domain(void) { struct device_node *np; @@ -183,6 +186,11 @@ static __init int exynos4_pm_init_power_domain(void) pd->pd.power_on = exynos_pd_power_on; pd->local_pwr_cfg = pm_domain_cfg->local_pwr_cfg; + for (i = 0; i < ARRAY_SIZE(soc_force_no_clk); i++) + if (of_find_compatible_node(NULL, NULL, + soc_force_no_clk[i])) + goto no_clk; + for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) { char clk_name[8]; -- 2.7.4