Re: [PATCH] clk: qcom: dispcc-eliza: Fix disp_cc_mdss_mdp_clk_src RCG stall on Eliza EVK

[Konrad Dybcio]

On 6/23/26 1:56 PM, Krzysztof Kozlowski wrote:
> Eliza EVK (eliza-cqs-evk.dts) does not have display enabled, however its
> Display Clock Controller is enabled and references parent clocks from
> DSI PHYs, which causes clock reparenting issues during probe (init) and
> warning on Eliza EVK:
> 
>   disp_cc_mdss_mdp_clk_src: rcg didn't update its configuration.
>   WARNING: drivers/clk/qcom/clk-rcg2.c:136 at update_config+0xd4/0xe4, CPU#1: udevd/273
>   ...
>     update_config (drivers/clk/qcom/clk-rcg2.c:136 (discriminator 2)) (P)
>     clk_rcg2_shared_disable (drivers/clk/qcom/clk-rcg2.c:1471)
>     clk_rcg2_shared_init (drivers/clk/qcom/clk-rcg2.c:1540)
>     __clk_register (drivers/clk/clk.c:3959 drivers/clk/clk.c:4368)
>     devm_clk_hw_register (drivers/clk/clk.c:4448 (discriminator 1) drivers/clk/clk.c:4672 (discriminator 1))
>     devm_clk_register_regmap (drivers/clk/qcom/clk-regmap.c:104)
>     qcom_cc_really_probe (drivers/clk/qcom/common.c:418)
>     qcom_cc_probe (drivers/clk/qcom/common.c:445)
>     disp_cc_eliza_probe (dispcc-eliza.c:?) dispcc_eliza
>     platform_probe (drivers/base/platform.c:1432)
> 
> Fixes: 0e66f10942b5 ("clk: qcom: dispcc-eliza: Add Eliza display clock controller support")
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
> 
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad