Re: [PATCH] clk: qcom: gcc-x1e80100: Don't use parking clk_ops for QUPs
From: Stephen Boyd
Date: Tue Aug 27 2024 - 14:02:58 EST
Quoting Bryan O'Donoghue (2024-08-23 05:58:56)
> Per Stephen Boyd's explanation in the link below, QUP RCG clocks do not
> need to be parked when switching frequency. A side-effect in parking to a
> lower frequency can be a momentary invalid clock driven on an in-use serial
> peripheral.
>
> This can cause "junk" to spewed out of a UART as a low-impact example. On
> the x1e80100-crd this serial port junk can be observed on linux-next.
>
> Apply a similar fix to the x1e80100 Global Clock controller to remediate.
>
> Link: https://lore.kernel.org/all/20240819233628.2074654-3-swboyd@xxxxxxxxxxxx/
> Fixes: 161b7c401f4b ("clk: qcom: Add Global Clock controller (GCC) driver for X1E80100")
> Fixes: 929c75d57566 ("clk: qcom: gcc-sm8550: Mark RCGs shared where applicable")
> Suggested-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
> ---
Applied to clk-fixes