Re: [PATCH v2 1/2] clk: qcom: gcc-sc7180: Keep the USB GDSC always on

Bjorn Andersson
2022-08-26T02:40:18Z

On Thu, Aug 25, 2022 at 06:21:58PM -0700, Matthias Kaehlcke wrote:
> When the GDSC is disabled during system suspend USB is broken on
> sc7180 when the system resumes. Mark the GDSC as always on to
> make sure USB still works after system suspend.
>
> Signed-off-by: Matthias Kaehlcke <mka@chromium.org>

Rajendra, where you able to find some time to look into take the GDSC
into retention state? Do you suggest that I merge these two patches for
now?

Thanks,
Bjorn

> ---
> I'm not entirely sure that this is the correct solution. What makes
> me doubt is that only msm8953 sets ALWAYS_ON for the USB GDSC. Is USB
> broken after suspend on all the other QC platforms?
>
> Changes in v2:
> - set the flags of the GDSC not of the GDSC power domain
> - updated commit message
>
> drivers/clk/qcom/gcc-sc7180.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/clk/qcom/gcc-sc7180.c b/drivers/clk/qcom/gcc-sc7180.c
> index c2ea09945c47..c0d7509a782e 100644
> --- a/drivers/clk/qcom/gcc-sc7180.c
> +++ b/drivers/clk/qcom/gcc-sc7180.c
> @@ -2225,6 +2225,7 @@ static struct gdsc usb30_prim_gdsc = {
> .name = "usb30_prim_gdsc",
> },
> .pwrsts = PWRSTS_OFF_ON,
> + .flags = ALWAYS_ON,
> };
>
> static struct gdsc hlos1_vote_mmnoc_mmu_tbu_hf0_gdsc = {
> --
> 2.37.2.672.g94769d06f0-goog
>