Re: [PATCH] clk: exynos7: Mark aclk_fsys1_200 as critical

[Krzysztof Kozlowski]

On Sat, Oct 24, 2020 at 05:43:46PM +0200, Paweł Chmiel wrote:
> This clock must be always enabled to allow access to any registers in
> fsys1 CMU. Until proper solution based on runtime PM is applied
> (similar to what was done for Exynos5433), mark that clock as critical
> so it won't be disabled.
> 
> It was observed on Samsung Galaxy S6 device (based on Exynos7420), where
> UFS module is probed before pmic used to power that device.
> In this case defer probe was happening and that clock was disabled by
> UFS driver, causing whole boot to hang on next CMU access.
> 
> Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@xxxxxxxxx>
> ---
>  drivers/clk/samsung/clk-exynos7.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Acked-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>

Best regards,
Krzysztof