Commit 3d6c2bc7 authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Geert Uytterhoeven
Browse files

arm64: dts: renesas: Add CN15 eMMC and SD overlays for RZ/V2H and RZ/V2N EVKs 



Introduce device tree overlays for supporting the eMMC (RTK0EF0186B02000BJ)
and microSD (RTK0EF0186B01000BJ) sub-boards connected via the CN15
connector on the RZ/V2H and RZ/V2N evaluation kits.

These overlays enable SDHI0 with appropriate pin control settings, power
regulators, and GPIO handling. Both sub-boards are supported using shared
overlay files that can be applied to either EVK due to their identical
connector layout and interface support.

To support this, new DT overlay files are added:
- `rzv2-evk-cn15-emmc.dtso` for eMMC
- `rzv2-evk-cn15-sd.dtso` for microSD

Additionally, the base DTS files for both EVKs are updated to include a
fixed 1.8V regulator (`reg_1p8v`) needed by the eMMC sub-board and
potential future use cases such as HDMI output.

Signed-off-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250627193742.110818-1-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 424ada15

arch/arm64/boot/dts/renesas/Makefile

+12 −0
Original line number Diff line number Diff line
@@ -163,8 +163,20 @@ r9a09g047e57-smarc-cru-csi-ov5645-dtbs := r9a09g047e57-smarc.dtb r9a09g047e57-sm 
dtb-$(CONFIG_ARCH_R9A09G047) += r9a09g047e57-smarc-cru-csi-ov5645.dtb



dtb-$(CONFIG_ARCH_R9A09G056) += r9a09g056n48-rzv2n-evk.dtb

dtb-$(CONFIG_ARCH_R9A09G056) += rzv2-evk-cn15-emmc.dtbo

r9a09g056n48-rzv2n-evk-cn15-emmc-dtbs := r9a09g056n48-rzv2n-evk.dtb rzv2-evk-cn15-emmc.dtbo

dtb-$(CONFIG_ARCH_R9A09G056) += r9a09g056n48-rzv2n-evk-cn15-emmc.dtb

dtb-$(CONFIG_ARCH_R9A09G056) += rzv2-evk-cn15-sd.dtbo

r9a09g056n48-rzv2n-evk-cn15-sd-dtbs := r9a09g056n48-rzv2n-evk.dtb rzv2-evk-cn15-sd.dtbo

dtb-$(CONFIG_ARCH_R9A09G056) += r9a09g056n48-rzv2n-evk-cn15-sd.dtb



dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk.dtb

dtb-$(CONFIG_ARCH_R9A09G057) += rzv2-evk-cn15-emmc.dtbo

r9a09g057h44-rzv2h-evk-cn15-emmc-dtbs := r9a09g057h44-rzv2h-evk.dtb rzv2-evk-cn15-emmc.dtbo

dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk-cn15-emmc.dtb

dtb-$(CONFIG_ARCH_R9A09G057) += rzv2-evk-cn15-sd.dtbo

r9a09g057h44-rzv2h-evk-cn15-sd-dtbs := r9a09g057h44-rzv2h-evk.dtb rzv2-evk-cn15-sd.dtbo

dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk-cn15-sd.dtb

dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h48-kakip.dtb



dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-ebisu-panel-aa104xd12.dtbo

arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts

+9 −0
Original line number Diff line number Diff line
@@ -48,6 +48,15 @@ reg_0p8v: regulator-0p8v { 
		regulator-always-on;

	};



	reg_1p8v: regulator-1p8v {

		compatible = "regulator-fixed";

		regulator-name = "fixed-1.8V";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

		regulator-boot-on;

		regulator-always-on;

	};



	reg_3p3v: regulator-3p3v {

		compatible = "regulator-fixed";

		regulator-name = "fixed-3.3V";

arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts

+9 −0
Original line number Diff line number Diff line
@@ -55,6 +55,15 @@ reg_0p8v: regulator-0p8v { 
		regulator-always-on;

	};



	reg_1p8v: regulator-1p8v {

		compatible = "regulator-fixed";

		regulator-name = "fixed-1.8V";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

		regulator-boot-on;

		regulator-always-on;

	};



	reg_3p3v: regulator-3p3v {

		compatible = "regulator-fixed";

arch/arm64/boot/dts/renesas/rzv2-evk-cn15-emmc.dtso

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+50 −0
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// SPDX-License-Identifier: GPL-2.0

/*

 * Shared DT overlay for the eMMC Sub Board (RTK0EF0186B02000BJ), which

 * is connected to the CN15 connector on the RZ/V2H and RZ/V2N EVKs.

 *

 * Copyright (C) 2025 Renesas Electronics Corp.

 */



/dts-v1/;

/plugin/;



#include <dt-bindings/gpio/gpio.h>

#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>



&{/} {

	aliases {

		mmc0 = "/soc/mmc@15c00000";

	};

};



&pinctrl {

	sdhi0_emmc_pins: emmc-pins {

		sd0-clk {

			pins = "SD0CLK";

			renesas,output-impedance = <3>;

			slew-rate = <0>;

		};



		sd0-dat-cmd {

			pins = "SD0DAT0", "SD0DAT1", "SD0DAT2", "SD0DAT3", "SD0DAT4",

			       "SD0DAT5", "SD0DAT6", "SD0DAT7", "SD0CMD";

			input-enable;

			renesas,output-impedance = <3>;

			slew-rate = <0>;

		};

	};

};



&sdhi0 {

	pinctrl-0 = <&sdhi0_emmc_pins>;

	pinctrl-1 = <&sdhi0_emmc_pins>;

	pinctrl-names = "default", "state_uhs";

	vmmc-supply = <&reg_3p3v>;

	vqmmc-supply = <&reg_1p8v>;

	bus-width = <8>;

	mmc-hs200-1_8v;

	non-removable;

	fixed-emmc-driver-type = <1>;

	status = "okay";

};

arch/arm64/boot/dts/renesas/rzv2-evk-cn15-sd.dtso

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// SPDX-License-Identifier: GPL-2.0

/*

 * Shared DT overlay for the microSD Sub Board (RTK0EF0186B01000BJ), which

 * is connected to the CN15 connector on the RZ/V2H and RZ/V2N EVKs.

 *

 * Copyright (C) 2025 Renesas Electronics Corp.

 */



/dts-v1/;

/plugin/;



#include <dt-bindings/gpio/gpio.h>

#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>



&{/} {

	aliases {

		mmc0 = "/soc/mmc@15c00000";

	};



	vqmmc_sdhi0: regulator-vqmmc-sdhi0 {

		compatible = "regulator-gpio";

		regulator-name = "SDHI0 VqmmC";

		gpios = <&pinctrl RZG2L_GPIO(10, 0) GPIO_ACTIVE_HIGH>;

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <3300000>;

		gpios-states = <0>;

		states = <3300000 0>, <1800000 1>;

	};

};



&pinctrl {

	sdhi0-pwr-en-hog {

		gpio-hog;

		gpios = <RZG2L_GPIO(10, 1) GPIO_ACTIVE_HIGH>;

		output-high;

		line-name = "sd0_pwr_en";

	};



	sdhi0_pins: sd0 {

		sd0-cd {

			pinmux = <RZG2L_PORT_PINMUX(10, 5, 15)>; /* SD0_CD */

		};



		sd0-clk {

			pins = "SD0CLK";

			renesas,output-impedance = <3>;

			slew-rate = <0>;

		};



		sd0-dat-cmd {

			pins = "SD0DAT0", "SD0DAT1", "SD0DAT2", "SD0DAT3", "SD0CMD";

			input-enable;

			renesas,output-impedance = <3>;

			slew-rate = <0>;

		};

	};

};



&sdhi0 {

	pinctrl-0 = <&sdhi0_pins>;

	pinctrl-1 = <&sdhi0_pins>;

	pinctrl-names = "default", "state_uhs";

	vmmc-supply = <&reg_3p3v>;

	vqmmc-supply = <&vqmmc_sdhi0>;

	bus-width = <4>;

	sd-uhs-sdr50;

	sd-uhs-sdr104;

	status = "okay";

};