@@ -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 {
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@nvidia.com> --- 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(+)