| Message ID | 1532607560-11253-2-git-send-email-avienamo@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Tegra SDHCI enable 1.8 V signaling on Tegar210 and Tegra186 | expand |
On Thu, Jul 26, 2018 at 03:19:11PM +0300, Aapo Vienamo wrote: > Document the pinctrl bindings used by the SDHCI driver to reconfigure > pad voltages on controllers supporting multiple voltage levels. > > Signed-off-by: Aapo Vienamo <avienamo@nvidia.com> > Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> > --- > .../bindings/mmc/nvidia,tegra20-sdhci.txt | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) Reviewed-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt index 9bce578..90c214d 100644 --- a/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt +++ b/Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt @@ -38,3 +38,25 @@ sdhci@c8000200 { power-gpios = <&gpio 155 0>; /* gpio PT3 */ bus-width = <8>; }; + +Optional properties for Tegra210 and Tegra186: +- pinctrl-names, pinctrl-0, pinctrl-1 : Specify pad voltage + configurations. Valid pinctrl-names are "sdmmc-3v3" and "sdmmc-1v8" + for controllers supporting multiple voltage levels. The order of names + should correspond to the pin configuration states in pinctrl-0 and + pinctrl-1. + +Example: +sdhci@700b0000 { + compatible = "nvidia,tegra210-sdhci", "nvidia,tegra124-sdhci"; + reg = <0x0 0x700b0000 0x0 0x200>; + interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&tegra_car TEGRA210_CLK_SDMMC1>; + clock-names = "sdhci"; + resets = <&tegra_car 14>; + reset-names = "sdhci"; + pinctrl-names = "sdmmc-3v3", "sdmmc-1v8"; + pinctrl-0 = <&sdmmc1_3v3>; + pinctrl-1 = <&sdmmc1_1v8>; + status = "disabled"; +};