[PATCH V5 23/27] arm64: tegra: Add PEX DPD states as pinctrl properties

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Add PEX deep power down states as pinctrl properties to set in PCIe driver.
In Tegra210, BIAS pads are not in power down mode when clamps are applied.
To set the pads in DPD, pass the PEX DPD states as pinctrl properties to
PCIe driver.

Signed-off-by: Manikanta Maddireddy <mmaddireddy@xxxxxxxxxx>
---
V5: No change

V4: No change

V3: No change

V2: Using standard pinctrl names, default and idle

 arch/arm64/boot/dts/nvidia/tegra210.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index a550c0a4d572..3899c54ea28f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -48,6 +48,11 @@
 			 <&tegra_car 72>,
 			 <&tegra_car 74>;
 		reset-names = "pex", "afi", "pcie_x";
+
+		pinctrl-names = "default", "idle";
+		pinctrl-0 = <&pex_dpd_disable>;
+		pinctrl-1 = <&pex_dpd_enable>;
+
 		status = "disabled";
 
 		pci@1,0 {
@@ -848,6 +853,20 @@
 			pins = "sdmmc3";
 			power-source = <TEGRA_IO_PAD_VOLTAGE_1V8>;
 		};
+
+		pex_dpd_disable: pex_en {
+			pex-dpd-disable {
+				pins = "pex-bias", "pex-clk1", "pex-clk2";
+				low-power-disable;
+			};
+		};
+
+		pex_dpd_enable: pex_dis {
+			pex-dpd-enable {
+				pins = "pex-bias", "pex-clk1", "pex-clk2";
+				low-power-enable;
+			};
+		};
 	};
 
 	fuse@7000f800 {
-- 
2.17.1




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