Re: [PATCH v2] clk: qcom: dispcc-sdm845: Enable parents for pixel clocks

[David Heidelberg]

On 07/01/2026 12:44, Petr Hodina via B4 Relay wrote:
> From: Petr Hodina <petr.hodina@xxxxxxxxxxxxxx>
>
> Add CLK_OPS_PARENT_ENABLE to MDSS pixel clock sources to ensure parent
> clocks are enabled during clock operations, preventing potential
> stability issues during display configuration.
>
> Fixes: 81351776c9fb ("clk: qcom: Add display clock controller driver for SDM845")
> Signed-off-by: Petr Hodina <petr.hodina@xxxxxxxxxxxxxx>
> ---
> We are currently running the latest linux-next snapshots (next-202511*
> and next-202512*) and have encountered random freezes and crashes on the
> Pixel 3, as well as crash dumps on the OnePlus 6 and 6T.
>
> This commit fixes the stability issue. I've checked other SDM dispcc
> files and they also contain this configuration.
>
> For safety I also set the configuration for `disp_cc_mdss_pclk1_clk_src`
> though it should be sufficient only for `disp_cc_mdss_pclk0_clk_src`.
>
> Kind regards,
> Petr
> ---
> Changes in v2:
> - Remove commits from v1 and introduce proper fix.
> - Link to v1: https://lore.kernel.org/r/20251213-stability-discussion-v1-0-b25df8453526@xxxxxxx
> ---
>   drivers/clk/qcom/dispcc-sdm845.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: David Heidelberg <david@xxxxxxx>