| Message ID | 20180221101527.25554-2-m.szyprowski@samsung.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
On Wed, Feb 21, 2018 at 11:15 AM, Marek Szyprowski <m.szyprowski@samsung.com> wrote: > 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 <m.szyprowski@samsung.com> > --- > drivers/soc/samsung/pm_domains.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Feel free to take it through samsung-clk tree. Just in case of possible conflicts - could you put it on separate branch please? Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-clk" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 02/22/2018 11:54 AM, Krzysztof Kozlowski wrote: > On Wed, Feb 21, 2018 at 11:15 AM, Marek Szyprowski > <m.szyprowski@samsung.com> wrote: >> 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 <m.szyprowski@samsung.com> >> --- >> drivers/soc/samsung/pm_domains.c | 8 ++++++++ >> 1 file changed, 8 insertions(+) >> > Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> > > Feel free to take it through samsung-clk tree. Just in case of > possible conflicts - could you put it on separate branch please? OK, it's applied on a separate branch now, please let me know when you need a signed tag.
diff --git a/drivers/soc/samsung/pm_domains.c b/drivers/soc/samsung/pm_domains.c index b6a436594a19..cef30bdf19b1 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];
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 <m.szyprowski@samsung.com> --- drivers/soc/samsung/pm_domains.c | 8 ++++++++ 1 file changed, 8 insertions(+)