clk: qcom: gcc-sm8250: Do not turn off PCIe GDSCs during gdsc_disable()

commit ade508b545c969c72cd68479f275a5dd640fd8b9 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 # 5.7
Fixes: 3e5770921a88 ("clk: qcom: gcc: Add global clock controller driver for SM8250")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20240719134238.312191-1-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-sm8250.c b/drivers/clk/qcom/gcc-sm8250.c
index 30bd56146107441a9964e2f5b251ca92d1af0aa5..3f78ed8b770b6bb79a6197752918f82072d232c9 100644 (file)
--- a/drivers/clk/qcom/gcc-sm8250.c
+++ b/drivers/clk/qcom/gcc-sm8250.c
@@ -3228,7 +3228,7 @@ 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 = {
@@ -3236,7 +3236,7 @@ static struct gdsc pcie_1_gdsc = {
        .pd = {
                .name = "pcie_1_gdsc",
        },
-       .pwrsts = PWRSTS_OFF_ON,
+       .pwrsts = PWRSTS_RET_ON,
 };
 
 static struct gdsc pcie_2_gdsc = {
@@ -3244,7 +3244,7 @@ static struct gdsc pcie_2_gdsc = {
        .pd = {
                .name = "pcie_2_gdsc",
        },
-       .pwrsts = PWRSTS_OFF_ON,
+       .pwrsts = PWRSTS_RET_ON,
 };
 
 static struct gdsc ufs_card_gdsc = {