[PATCH v2 4/4] arm64: dts: qcom: sa8775p: add link_down reset for pcie

[Ziyue Zhang]

SA8775p supports 'link_down' reset on hardware, so add it for both pcie0
and pcie1, which can provide a better user experience.

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Signed-off-by: Ziyue Zhang <quic_ziyuzhan@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index d7248014368b..c8ce3d42c894 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -7152,8 +7152,11 @@ pcie0: pcie@1c00000 {
 		iommu-map = <0x0 &pcie_smmu 0x0000 0x1>,
 			    <0x100 &pcie_smmu 0x0001 0x1>;
 
-		resets = <&gcc GCC_PCIE_0_BCR>;
-		reset-names = "pci";
+		resets = <&gcc GCC_PCIE_0_BCR>,
+			 <&gcc GCC_PCIE_0_LINK_DOWN_BCR>;
+		reset-names = "pci",
+			      "link_down";
+
 		power-domains = <&gcc PCIE_0_GDSC>;
 
 		phys = <&pcie0_phy>;
@@ -7312,8 +7315,11 @@ pcie1: pcie@1c10000 {
 		iommu-map = <0x0 &pcie_smmu 0x0080 0x1>,
 			    <0x100 &pcie_smmu 0x0081 0x1>;
 
-		resets = <&gcc GCC_PCIE_1_BCR>;
-		reset-names = "pci";
+		resets = <&gcc GCC_PCIE_1_BCR>,
+			 <&gcc GCC_PCIE_1_LINK_DOWN_BCR>;
+		reset-names = "pci",
+			      "link_down";
+
 		power-domains = <&gcc PCIE_1_GDSC>;
 
 		phys = <&pcie1_phy>;
-- 
2.34.1