| Message ID | 1532090746-15863-2-git-send-email-avienamo@nvidia.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Tegra SDHCI enable 1.8 V signaling on Tegar210 and Tegra186 | expand |
I would maybe say "dt-bindings: mmc: tegra: Add pad voltage control properties" or similar for the subject - the current kind of looks like the SDHCI controller is a pinctrl device :) Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> On 20.07.2018 15:45, 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> > --- > .../bindings/mmc/nvidia,tegra20-sdhci.txt | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > > 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"; > +}; > -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" 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"; +};
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> --- .../bindings/mmc/nvidia,tegra20-sdhci.txt | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)