From: Marek Szyprowski Date: Wed, 21 Feb 2018 10:15:22 +0000 (+0100) Subject: soc: samsung: pm_domains: Add blacklisting clock handling X-Git-Tag: v4.17-rc1~18^2~7^4~1^2~7^2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af8d30ac64e1ddef50981dc039f5773f57338b1a;p=thirdparty%2Flinux.git 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 --- diff --git a/drivers/soc/samsung/pm_domains.c b/drivers/soc/samsung/pm_domains.c index b6a436594a199..cef30bdf19b1a 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];