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riscv: dts: spacemit: k3: Enable SD card support

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Add the device tree node of SDHCI-0 controller which found on CoM260-IFX
board, it's currenty used for Micro SD card slot, and one GPIO pin is
configured as card insertion/removal detection pin, the slot use 4-bit
data bus, and up support to SDR104 speed mode.

Link: https://patch.msgid.link/20260610-07-k3-enable-sd-v1-1-196ae29bd091@kernel.org
Signed-off-by: Yixun Lan <dlan@kernel.org>
This commit is contained in:
Yixun Lan 2026-06-10 12:34:32 +00:00
parent d3cfc81d95
commit 055044260e
3 changed files with 75 additions and 0 deletions
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18
arch/riscv/boot/dts/spacemit/k3-com260-ifx.dts
View File

@ -19,3 +19,21 @@ chosen {
stdout-path = "serial0:115200n8";
};
};
&sdhci0 {
pinctrl-names = "default","uhs";
pinctrl-0 = <&mmc1_cfg>;
pinctrl-1 = <&mmc1_uhs_cfg>;
bus-width = <4>;
cd-gpios = <&gpio K3_GPIO(4) GPIO_ACTIVE_HIGH>;
no-mmc;
no-sdio;
disable-wp;
cap-sd-highspeed;
vmmc-supply = <&aldo4>;
vqmmc-supply = <&aldo1>;
sd-uhs-sdr25;
sd-uhs-sdr50;
sd-uhs-sdr104;
status = "okay";
};

44
arch/riscv/boot/dts/spacemit/k3-pinctrl.dtsi
View File

@ -689,4 +689,48 @@ uart0-0-pins {
drive-strength = <25>;
};
};
mmc1_cfg: mmc1-cfg {
mmc1-data-cmd-pins {
pinmux = <K3_PADCONF(132, 0)>, /* mmc1 dat3 */
<K3_PADCONF(133, 0)>, /* mmc1 dat2 */
<K3_PADCONF(134, 0)>, /* mmc1 dat1 */
<K3_PADCONF(135, 0)>, /* mmc1 dat0 */
<K3_PADCONF(136, 0)>; /* mmc1 cmd */
bias-pull-up = <0>;
drive-strength = <25>;
power-source = <3300>;
};
mmc1-clk-pins {
pinmux = <K3_PADCONF(137, 0)>; /* mmc1 clk */
bias-pull-down;
drive-strength = <25>;
power-source = <3300>;
};
};
mmc1_uhs_cfg: mmc1-uhs-cfg {
mmc1-uhs-data-cmd-pins {
pinmux = <K3_PADCONF(132, 0)>, /* mmc1 dat3 */
<K3_PADCONF(133, 0)>, /* mmc1 dat2 */
<K3_PADCONF(134, 0)>, /* mmc1 dat1 */
<K3_PADCONF(135, 0)>, /* mmc1 dat0 */
<K3_PADCONF(136, 0)>; /* mmc1 cmd */
bias-pull-up = <0>;
drive-strength = <21>;
power-source = <1800>;
};
mmc1-uhs-clk-pins {
pinmux = <K3_PADCONF(137, 0)>; /* mmc1 clk */
bias-pull-down;
drive-strength = <21>;
power-source = <1800>;
};
};
};

13
arch/riscv/boot/dts/spacemit/k3.dtsi
View File

@ -1099,6 +1099,19 @@ pll: clock-controller@d4090000 {
#clock-cells = <1>;
};
sdhci0: mmc@d4280000 {
compatible = "spacemit,k3-sdhci";
reg = <0x0 0xd4280000 0x0 0x200>;
clocks = <&syscon_apmu CLK_APMU_SDH_AXI>,
<&syscon_apmu CLK_APMU_SDH0>;
clock-names = "core", "io";
resets = <&syscon_apmu RESET_APMU_SDH_AXI>,
<&syscon_apmu RESET_APMU_SDH0>;
reset-names = "axi", "sdh";
interrupts = <99 IRQ_TYPE_LEVEL_HIGH>;
status = "disabled";
};
syscon_apmu: system-controller@d4282800 {
compatible = "spacemit,k3-syscon-apmu";
reg = <0x0 0xd4282800 0x0 0x400>;