Re: [PATCH] clk: samsung: exynos542x: Move G3D subsystem clocks to its sub-CMU

[Krzysztof Kozlowski <krzk@kernel.org>]

On Wed, Oct 23, 2019 at 09:41:18AM +0200, Marek Szyprowski wrote:
> G3D clocks require special handling of their parent bus clock during power
> domain on/off sequences. Those clocks were not initially added to the
> sub-CMU handler, because that time there was no open-source driver for the
> G3D (MALI Panfrost) hardware module and it was not possible to test it.
> 
> This patch fixes this issue. Parent clock for G3D hardware block is now
> properly preserved during G3D power domain on/off sequence. This restores
> proper MALI Panfrost performance broken by commit 8686764fc071
> ("ARM: dts: exynos: Add G3D power domain to Exynos542x").
> 
> Reported-by: Marian Mihailescu <mihailescu2m@gmail.com>
> Fixes: b06a532bf1fa ("clk: samsung: Add Exynos5 sub-CMU clock driver")
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> Tested-by: Marian Mihailescu <mihailescu2m@gmail.com>
> ---
>  drivers/clk/samsung/clk-exynos5420.c | 21 +++++++++++++++++++--
>  1 file changed, 19 insertions(+), 2 deletions(-)

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof