ESP32 how to configure SDHC driver?

[lit-af]

Hi, I have a Freenove esp32s3 CAM board and I have a hard time adding support for the SD card in the devicetree.

ESP32 side:

SD card socket side:

I have this in fnk0085_esp32s3-pinctrl.dtsi

#include <zephyr/dt-bindings/pinctrl/esp-pinctrl-common.h>
#include <dt-bindings/pinctrl/esp32s3-pinctrl.h>
#include <zephyr/dt-bindings/pinctrl/esp32s3-gpio-sigmap.h>

&pinctrl {
	uart0_default: uart0_default {
		group1 {
			pinmux = <UART0_TX_GPIO43>;
			output-high;
		};
		group2 {
			pinmux = <UART0_RX_GPIO44>;
			bias-pull-up;
		};
	};

	uart1_default: uart1_default {
		group1 {
			pinmux = <UART1_TX_GPIO17>;
			output-high;
		};
		group2 {
			pinmux = <UART1_RX_GPIO18>;
			bias-pull-up;
		};
	};

	i2c0_default: i2c0_default {
		group1 {
			pinmux = <I2C0_SDA_GPIO1>,
				 <I2C0_SCL_GPIO2>;
			bias-pull-up;
			drive-open-drain;
			output-high;
		};
	};

	i2c1_default: i2c1_default {
		group1 {
			pinmux = <I2C1_SDA_GPIO4>,
				 <I2C1_SCL_GPIO5>;
			bias-pull-up;
			drive-open-drain;
			output-high;
		};
	};

	i2s0_default: i2s0_default {
		group1 {
			pinmux = <I2S0_MCLK_GPIO4>,
				 <I2S0_O_WS_GPIO5>,
				 <I2S0_O_BCK_GPIO6>,
				 <I2S0_O_SD_GPIO7>,
				 <I2S0_I_WS_GPIO15>,
				 <I2S0_I_BCK_GPIO16>;
			output-enable;
		};
		group2 {
			pinmux = <I2S0_I_SD_GPIO17>;
			input-enable;
		};
	};

	i2s1_default: i2s1_default {
		group1 {
			pinmux = <I2S1_MCLK_GPIO18>,
				 <I2S1_O_WS_GPIO8>,
				 <I2S1_O_BCK_GPIO3>,
				 <I2S1_O_SD_GPIO9>,
				 <I2S1_I_WS_GPIO10>,
				 <I2S1_I_BCK_GPIO11>;
			output-enable;
		};
		group2 {
			pinmux = <I2S1_I_SD_GPIO12>;
			input-enable;
		};
	};

	spim2_default: spim2_default {
		group1 {
			pinmux = <SPIM2_MISO_GPIO13>,
				 <SPIM2_SCLK_GPIO12>,
				 <SPIM2_CSEL_GPIO10>;
		};
		group2 {
			pinmux = <SPIM2_MOSI_GPIO11>;
			output-low;
		};
	};

	spim3_default: spim3_default {
		group1 {
			pinmux = <SPIM3_MISO_GPIO37>,
				 <SPIM3_SCLK_GPIO36>,
				 <SPIM3_CSEL_GPIO38>;
		};
		group2 {
			pinmux = <SPIM3_MOSI_GPIO39>;
			output-low;
		};
	};

	twai_default: twai_default {
		group1 {
			pinmux = <TWAI_TX_GPIO5>,
				<TWAI_RX_GPIO6>;
		};
	};

	sdhc1_default: sdhc1_default {
		group1 {
			pinmux = <ESP32_PINMUX(39, ESP_NOSIG, ESP_SDHOST_CCLK_OUT_1)>,
				 <ESP32_PINMUX(38, ESP_SDHOST_CCMD_IN_1, ESP_SDHOST_CCMD_OUT_1)>,
				 <ESP32_PINMUX(40, ESP_SDHOST_CDATA_IN_10, ESP_SDHOST_CDATA_OUT_10)>;
			output-high;
			input-enable;
			bias-pull-up;
		};
	};
};

and that in fnk0085_esp32s3_procpu.dts

/dts-v1/;

#include <espressif/esp32s3/esp32s3_wroom_n8.dtsi>
#include <zephyr/dt-bindings/input/input-event-codes.h>
#include <zephyr/dt-bindings/input/esp32-touch-sensor-input.h>
#include <espressif/partitions_0x0_amp.dtsi>
#include "fnk0085_esp32s3-pinctrl.dtsi"

/ {
	model = "Espressif ESP32S3-DevkitC PROCPU";
	compatible = "espressif,esp32s3";

	aliases {
		i2c-0 = &i2c0;
		watchdog0 = &wdt0;
	};

	chosen {
		zephyr,sram = &sram1;
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
		zephyr,bt-hci = &esp32_bt_hci;
		zephyr,sdhc = &sdhc1;
	};

	aliases {
		uart-0 = &uart0;
		sw0 = &button0;
		led0 = &led0;
		sdhc1 = &sdhc1;
	};

	buttons {
		compatible = "gpio-keys";
		button0: button_0 {
			gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
			label = "BOOT Button";
			zephyr,code = <INPUT_KEY_0>;
		};
	};

	leds {
		compatible = "gpio-leds";
		
		led0: led_0 {
			gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
			label = "Blue LED 0";
		};
	};
};

&sdhc1 {
		compatible = "espressif,esp32-sdhc-slot";
		status = "okay";

		pinctrl-0 = <&sdhc1_default>;
		pinctrl-names = "default";
		power-delay-ms = <100>;
		max-bus-freq = <52000000>;
		bus-width = <1>;

		mmc {
			compatible = "zephyr,sdmmc-disk";
			disk-name = "SD";
			status = "okay";
		};
};

&usb_serial {
	status = "disabled";
};

&uart0 {
	status = "okay";
	current-speed = <115200>;
	pinctrl-0 = <&uart0_default>;
	pinctrl-names = "default";
};

&gpio0 {
	status = "okay";
};

&gpio1 {
	status = "okay";
};

&touch {
	debounce-interval-ms = <30>;
	href-microvolt = <2700000>;
	lref-microvolt = <500000>;
	href-atten-microvolt = <1000000>;
	filter-mode = <ESP32_TOUCH_FILTER_MODE_IIR_16>;
	filter-debounce-cnt = <1>;
	filter-noise-thr = <ESP32_TOUCH_FILTER_NOISE_THR_4_8TH>;
	filter-jitter-step = <4>;
	filter-smooth-level = <ESP32_TOUCH_FILTER_SMOOTH_MODE_IIR_2>;
};

&i2c0 {
	clock-frequency = <I2C_BITRATE_STANDARD>;
	pinctrl-0 = <&i2c0_default>;
	pinctrl-names = "default";
};

&i2c1 {
	clock-frequency = <I2C_BITRATE_STANDARD>;
	pinctrl-0 = <&i2c1_default>;
	pinctrl-names = "default";
};

&i2s0 {
	pinctrl-0 = <&i2s0_default>;
	pinctrl-names = "default";
	status = "disabled";
};

&i2s1 {
	pinctrl-0 = <&i2s1_default>;
	pinctrl-names = "default";
	status = "disabled";
};

&spi2 {
	#address-cells = <1>;
	#size-cells = <0>;
	status = "okay";
	pinctrl-0 = <&spim2_default>;
	pinctrl-names = "default";
};

&spi3 {
	#address-cells = <1>;
	#size-cells = <0>;
	status = "okay";
	pinctrl-0 = <&spim3_default>;
	pinctrl-names = "default";
};

&twai {
	pinctrl-0 = <&twai_default>;
	pinctrl-names = "default";
};

&timer0 {
	status = "disabled";
};

&timer1 {
	status = "disabled";
};

&timer2 {
	status = "disabled";
};

&timer3 {
	status = "disabled";
};

&wdt0 {
	status = "okay";
};

&trng0 {
	status = "okay";
};

&esp32_bt_hci {
	status = "okay";
};

&wifi {
	status = "okay";
};

but it doesn't show in the shell:

[raffarost]

hi @lit-af

please try to update the following:

In fnk0085_esp32s3-pinctrl.dtsi:

	sdhc1_default: sdhc1_default {
		group1 {
			pinmux = <SDHC1_CLKOUT_GPIO39>,
				 <SDHC1_CMD_GPIO38>,
				 <SDHC1_DATA0_GPIO40>;
			bias-pull-up;
			output-high;
		};
	};

In fnk0085_esp32s3_procpu.dts:

&sdhc {
	sdhc1: sdhc@1 {
		status = "okay";

		pinctrl-0 = <&sdhc1_default>;
		pinctrl-names = "default";
		max-bus-freq = <52000000>;
		bus-width = <1>;

		mmc {
			compatible = "zephyr,sdmmc-disk";
			disk-name = "SD";
			status = "okay";
		};
	};
};

Notice that you need to define a parent node sdhc and a child node sdhc1 for the slot you decided you use.
Let me know if it works.

[lit-af]

Thank you!