[PATCH v3 1/9] arm64: dts: amlogic: t7: Add eMMC, SD card and SDIO pinctrl nodes

Xianwei Zhao xianwei.zhao at amlogic.com
Tue Mar 24 19:48:10 PDT 2026


Hi Ronald,

On 2026/3/23 17:55, Ronald Claveau wrote:
> These pinctrl nodes are required by the eMMC, SD card and SDIO drivers
> to configure pin muxing at runtime.
> 
> - eMMC: control, 4-bit/8-bit data, data strobe and clock gate pins
> - SD card: data, clock, command and clock gate pins
> - SDIO: data, clock, command and clock gate pins
> 
> Signed-off-by: Ronald Claveau<linux-kernel-dev at aliel.fr>
> ---
>   arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 98 +++++++++++++++++++++++++++++
>   1 file changed, 98 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
> index 6510068bcff92..ac8de8e9b8010 100644
> --- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
> @@ -250,6 +250,104 @@ gpio: bank at 4000 {
>                                          #gpio-cells = <2>;
>                                          gpio-ranges = <&periphs_pinctrl 0 0 157>;
>                                  };
> +
> +                               emmc_ctrl_pins: emmc-ctrl {
> +                                       mux-0 {
> +                                               groups = "emmc_cmd";
> +                                               function = "emmc";
> +                                               bias-pull-up;
> +                                       };
> +
> +                                       mux-1 {
> +                                               groups = "emmc_clk";
> +                                               function = "emmc";
> +                                               bias-disable;
> +                                       };
> +                               };
> +
> +                               emmc_data_4b_pins: emmc-data-4b {
> +                                       mux-0 {
> +                                               groups = "emmc_nand_d0",
> +                                                        "emmc_nand_d1",
> +                                                        "emmc_nand_d2",
> +                                                        "emmc_nand_d3";
> +                                               function = "emmc";
> +                                               bias-pull-up;
> +                                       };
> +                               };
> +
> +                               emmc_data_8b_pins: emmc-data-8b {
> +                                       mux-0 {
> +                                               groups = "emmc_nand_d0",
> +                                                        "emmc_nand_d1",
> +                                                        "emmc_nand_d2",
> +                                                        "emmc_nand_d3",
> +                                                        "emmc_nand_d4",
> +                                                        "emmc_nand_d5",
> +                                                        "emmc_nand_d6",
> +                                                        "emmc_nand_d7";
> +                                               function = "emmc";
> +                                               bias-pull-up;
> +                                       };
> +                               };
> +
> +                               emmc_ds_pins: emmc-ds {
> +                                       mux {
> +                                               groups = "emmc_nand_ds";
> +                                               function = "emmc";
> +                                               bias-pull-down;
> +                                       };
> +                               };
> +
> +                               emmc_clk_gate_pins: emmc_clk_gate {

Node names should use hyphens ('-') instead of underscores ('_'), 
consistent with the following nodes.

> +                                       mux {
> +                                               groups = "GPIOB_8";
> +                                               function = "gpio_periphs";
> +                                               bias-pull-down;
> +                                       };
> +                               };
> +
> +                               sdcard_pins: sdcard {
> +                                       mux {
> +                                               groups = "sdcard_d0",
> +                                                        "sdcard_d1",
> +                                                        "sdcard_d2",
> +                                                        "sdcard_d3",
> +                                                        "sdcard_clk",
> +                                                        "sdcard_cmd";
> +                                               function = "sdcard";
> +                                               bias-pull-up;
> +                                       };
> +                               };
> +
> +                               sdcard_clk_gate_pins: sdcard_clk_gate {
> +                                       mux {
> +                                               groups = "GPIOC_4";
> +                                               function = "gpio_periphs";
> +                                               bias-pull-down;
> +                                       };
> +                               };
> +
> +                               sdio_pins: sdio {
> +                                       mux-0 {
> +                                               groups = "sdio_d0",
> +                                                        "sdio_d1",
> +                                                        "sdio_d2",
> +                                                        "sdio_d3",
> +                                                        "sdio_clk",
> +                                                        "sdio_cmd";
> +                                               function = "sdio";
> +                                               bias-pull-up;
> +                                       };
> +                               };
> +
> +                               sdio_clk_gate_pins: sdio_clk_gate {
> +                                       mux {
> +                                               groups = "GPIOX_4";
> +                                               function = "gpio_periphs";
> +                                               bias-pull-up;
> +                                       };
> +                               };
>                          };
> 
>                          gpio_intc: interrupt-controller at 4080 {



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