clk: qcom: gcc-sm8650: Do not turn off USB GDSCs during gdsc_disable()

With PWRSTS_OFF_ON, USB GDSCs are turned off during gdsc_disable(). This
can happen during scenarios such as system suspend and breaks the resume
of USB controller from suspend.

So use PWRSTS_RET_ON to indicate the GDSC driver to not turn off the GDSCs
during gdsc_disable() and allow the hardware to transition the GDSCs to
retention when the parent domain enters low power state during system
suspend.

Fixes: c58225b7e3d7 ("clk: qcom: add the SM8650 Global Clock Controller driver, part 1")
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250305-topic-sm8650-upstream-fix-usb-suspend-v1-1-649036ab0557@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/clk/qcom/gcc-sm8650.c b/drivers/clk/qcom/gcc-sm8650.c
index 9dd5c48f33bed5b944a0b25959ef69e7862d0449..fa1672c4e7d814e1e08c79f9cda9463bf1cd1598 100644 (file)
--- a/drivers/clk/qcom/gcc-sm8650.c
+++ b/drivers/clk/qcom/gcc-sm8650.c
@@ -3497,7 +3497,7 @@ static struct gdsc usb30_prim_gdsc = {
        .pd = {
                .name = "usb30_prim_gdsc",
        },
-       .pwrsts = PWRSTS_OFF_ON,
+       .pwrsts = PWRSTS_RET_ON,
        .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
 };
 
@@ -3506,7 +3506,7 @@ static struct gdsc usb3_phy_gdsc = {
        .pd = {
                .name = "usb3_phy_gdsc",
        },
-       .pwrsts = PWRSTS_OFF_ON,
+       .pwrsts = PWRSTS_RET_ON,
        .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
 };