Re: [PATCH v2] phy: qcom: qmp-combo: Move pipe_clk on/off to common
From: Konrad Dybcio
Date: Tue Mar 03 2026 - 06:55:06 EST
On 2/28/26 11:05 PM, Val Packett wrote:
> Keep the USB pipe clock working when the phy is in DP-only mode, because
> the dwc controller still needs it for USB 2.0 over the same Type-C port.
>
> Tested with the BenQ RD280UA monitor which has a downstream-facing port
> for data passthrough that's manually switchable between USB 2 and 3,
> corresponding to 4-lane and 2-lane DP respectively.
>
> Note: the suspend/resume callbacks were already gating the enable/disable
> of this clock only on init_count and not usb_init_count!
>
> Signed-off-by: Val Packett <val@xxxxxxxxxxxx>
> ---
> See https://lore.kernel.org/all/389ca5d3-a698-4dac-911c-39ba057e3d17@xxxxxxxxxxxxxxxx/ for more info.
> BTW https://lore.kernel.org/all/20260205160240.748371-2-loic.poulain@xxxxxxxxxxxxxxxx/ helped with coldplug.
I think that's a fluke, you shouldn't see any real-world impact from
that patch
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Konrad