On Sun, Jul 19, 2020 at 11:12:07PM +0530, Amit Singh Tomar wrote:
> This commit adds uSD support for Cubieboard7 board based on Actions Semi
> S700 SoC. SD0 is connected to uSD slot. Since there is no PMIC support
> added yet, fixed regulator has been used as a regulator node.
>
> Signed-off-by: Amit Singh Tomar <amittomer25@xxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Thanks,
Mani
> ---
> Changes since v6:
> * Brought back the uSD fixed regulator.
> Changes since v5:
> * Removed the Fixed regulators as these are
> not needed.
> Changes since v4:
> * No change.
> Changes since v3:
> * No change.
> Changes since v2:
> * No change.
> Changes since v1:
> * No change.
> Changes since RFC:
> * No change.
> ---
> arch/arm64/boot/dts/actions/s700-cubieboard7.dts | 33 ++++++++++++++++++++++++
> arch/arm64/boot/dts/actions/s700.dtsi | 1 +
> 2 files changed, 34 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/actions/s700-cubieboard7.dts b/arch/arm64/boot/dts/actions/s700-cubieboard7.dts
> index 63e375cd9eb4..f81d63261ba2 100644
> --- a/arch/arm64/boot/dts/actions/s700-cubieboard7.dts
> +++ b/arch/arm64/boot/dts/actions/s700-cubieboard7.dts
> @@ -13,6 +13,7 @@
>
> aliases {
> serial3 = &uart3;
> + mmc0 = &mmc0;
> };
>
> chosen {
> @@ -28,6 +29,15 @@
> device_type = "memory";
> reg = <0x1 0xe0000000 0x0 0x0>;
> };
> +
> + /* Fixed regulator used in the absence of PMIC */
> + sd_vcc: sd-vcc {
> + compatible = "regulator-fixed";
> + regulator-name = "fixed-3.1V";
> + regulator-min-microvolt = <3100000>;
> + regulator-max-microvolt = <3100000>;
> + regulator-always-on;
> + };
> };
>
> &i2c0 {
> @@ -81,6 +91,14 @@
> bias-pull-up;
> };
> };
> +
> + mmc0_default: mmc0_default {
> + pinmux {
> + groups = "sd0_d0_mfp", "sd0_d1_mfp", "sd0_d2_d3_mfp",
> + "sd0_cmd_mfp", "sd0_clk_mfp";
> + function = "sd0";
> + };
> + };
> };
>
> &timer {
> @@ -90,3 +108,18 @@
> &uart3 {
> status = "okay";
> };
> +
> +/* uSD */
> +&mmc0 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc0_default>;
> + cd-gpios = <&pinctrl 120 GPIO_ACTIVE_LOW>;
> + no-sdio;
> + no-mmc;
> + no-1-8-v;
> + bus-width = <4>;
> + vmmc-supply = <&sd_vcc>;
> + vqmmc-supply = <&sd_vcc>;
> +};
> +
> diff --git a/arch/arm64/boot/dts/actions/s700.dtsi b/arch/arm64/boot/dts/actions/s700.dtsi
> index 9ed88aafc2da..ba498cf9217d 100644
> --- a/arch/arm64/boot/dts/actions/s700.dtsi
> +++ b/arch/arm64/boot/dts/actions/s700.dtsi
> @@ -4,6 +4,7 @@
> */
>
> #include <dt-bindings/clock/actions,s700-cmu.h>
> +#include <dt-bindings/gpio/gpio.h>
> #include <dt-bindings/interrupt-controller/arm-gic.h>
> #include <dt-bindings/power/owl-s700-powergate.h>
> #include <dt-bindings/reset/actions,s700-reset.h>
> --
> 2.7.4
>
