From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Date: Fri, 19 Jul 2024 13:42:38 +0000 (+0530)
Subject: clk: qcom: gcc-sm8250: Do not turn off PCIe GDSCs during gdsc_disable()
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cefa27681fa6c24209f8275f084b650221d8c05c;p=linux

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 e630bfa2d0c1..e71b7b7cb514 100644
--- a/drivers/clk/qcom/gcc-sm8250.c
+++ b/drivers/clk/qcom/gcc-sm8250.c
@@ -3226,7 +3226,7 @@ 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 = {
@@ -3234,7 +3234,7 @@ 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 = {
@@ -3242,7 +3242,7 @@ 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 = {