linux-kernel - [PATCH v2 2/2] clk: qcom: gcc-sc7280: Keep the USB GDSCs always on

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Date:   Thu, 25 Aug 2022 18:21:59 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Johan Hovold <johan+linaro@...nel.org>, linux-clk@...r.kernel.org,
        Krishna Kurapati <quic_kriskura@...cinc.com>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: [PATCH v2 2/2] clk: qcom: gcc-sc7280: Keep the USB GDSCs always on

When the GDSC is disabled during system suspend USB is broken on
sc7280 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@...omium.org>
---

Changes in v2:
- set the flags of the GDSC not of the GDSC power domain
- updated commit message

 drivers/clk/qcom/gcc-sc7280.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-sc7280.c b/drivers/clk/qcom/gcc-sc7280.c
index 7ff64d4d5920..adef68d2cb0b 100644
--- a/drivers/clk/qcom/gcc-sc7280.c
+++ b/drivers/clk/qcom/gcc-sc7280.c
@@ -3127,7 +3127,7 @@ static struct gdsc gcc_usb30_prim_gdsc = {
 		.name = "gcc_usb30_prim_gdsc",
 	},
 	.pwrsts = PWRSTS_OFF_ON,
-	.flags = VOTABLE,
+	.flags = VOTABLE | ALWAYS_ON,
 };
 
 static struct gdsc gcc_usb30_sec_gdsc = {
-- 
2.37.2.672.g94769d06f0-goog