clk: qcom: gcc-sm8450: Do not turn off PCIe GDSCs during gdsc_disable()

commit 889e1332310656961855c0dcedbb4dbe78e39d22 upstream.

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

Cc: stable@vger.kernel.org # 5.17
Fixes: db0c944ee92b ("clk: qcom: Add clock driver for SM8450")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20240722105733.13040-1-manivannan.sadhasivam@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/clk/qcom/gcc-sm8450.c b/drivers/clk/qcom/gcc-sm8450.c
index e86c58bc5e48bc89aaa06cb07d6412b5d31d0f88..827f574e99b25b86f3fee16d1c10f10ad118d02a 100644 (file)
--- a/drivers/clk/qcom/gcc-sm8450.c
+++ b/drivers/clk/qcom/gcc-sm8450.c
@@ -2974,7 +2974,7 @@ static struct gdsc pcie_0_gdsc = {
        .pd = {
                .name = "pcie_0_gdsc",
        },
-       .pwrsts = PWRSTS_OFF_ON,
+       .pwrsts = PWRSTS_RET_ON,
 };
 
 static struct gdsc pcie_1_gdsc = {
@@ -2982,7 +2982,7 @@ static struct gdsc pcie_1_gdsc = {
        .pd = {
                .name = "pcie_1_gdsc",
        },
-       .pwrsts = PWRSTS_OFF_ON,
+       .pwrsts = PWRSTS_RET_ON,
 };
 
 static struct gdsc ufs_phy_gdsc = {