| Message ID | 20190423092825.759-25-mmaddireddy@nvidia.com |
|---|---|
| State | Superseded |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | Enable Tegra PCIe root port features | expand |
On Tue, Apr 23, 2019 at 02:58:21PM +0530, Manikanta Maddireddy wrote: > 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> > --- > V2: Using standard pinctrl names, default and idle > > arch/arm64/boot/dts/nvidia/tegra210.dtsi | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) I'll pick this up into the Tegra tree once the rest of the set has been merged. Thierry
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 {
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> --- V2: Using standard pinctrl names, default and idle arch/arm64/boot/dts/nvidia/tegra210.dtsi | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)