Pavan,
On Tuesday 23 October 2012 12:48:59 Pavan Kunapuli wrote:
> Adding vmmc and vmmcq supplies for sdhci nodes
> in tegra dt files.
<...>
> diff --git a/arch/arm/boot/dts/tegra20-paz00.dts
> b/arch/arm/boot/dts/tegra20-paz00.dts index 6a93d14..e161b65 100644
> --- a/arch/arm/boot/dts/tegra20-paz00.dts
> +++ b/arch/arm/boot/dts/tegra20-paz00.dts
> @@ -422,13 +422,17 @@
> status = "okay";
> cd-gpios = <&gpio 173 0>; /* gpio PV5 */
> wp-gpios = <&gpio 57 0>; /* gpio PH1 */
> - power-gpios = <&gpio 169 0>; /* gpio PV1 */
> bus-width = <4>;
> + vmmc-supply = <&vddio_sd_reg>;
> + vqmmc-supply = <&vddio_sd_reg>;
> };
>
> sdhci@c8000600 {
> status = "okay";
> bus-width = <8>;
> + vmmc-supply = <&vddio_sdmmc_reg>;
> + vqmmc-supply = <&vddio_sdmmc_reg>;
to make it better, this should be:
vmmc-supply = <&vcore_mmc_reg>; and
vqmmc-supply = <&vddio_nand_reg>;
with vcore_mmc_reg is ldo5 and vddio_nand_reg is the fixed regulator below.
By doing so, I get "sdhci-tegra sdhci-tegra.3: could not set regulator OCR
(-1)". MMC subsys wants to set ldo5 to 3.3V but it is fixed. I guess that's
harmless for now.
> };
>
> gpio-keys {
> @@ -465,6 +469,24 @@
> regulator-max-microvolt = <5000000>;
> regulator-always-on;
> };
> +
> + vddio_sd_reg: regulator@1 {
> + compatible = "regulator-fixed";
> + reg = <1>;
> + regulator-name = "vddio_sd";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + enable-active-high;
> + gpio = <&gpio 169 0>; /* gpio PV1 */
> + };
> +
> + vddio_sdmmc_reg: regulator@2 {
^^ vddio_nand_reg acording to schematics
> + compatible = "regulator-fixed";
> + reg = <2>;
> + regulator-name = "vddio_sdmmc";
also here
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + };
> };
>
> sound {
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