linux-kernel - [PATCH 3/3] arm64: dts: renesas: Add CN15 eMMC and SD overlays for RZ/V2H EVK

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Message-ID: <20250620121045.56114-4-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Fri, 20 Jun 2025 13:10:45 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 3/3] arm64: dts: renesas: Add CN15 eMMC and SD overlays for RZ/V2H EVK

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Introduce device tree overlays to support the eMMC (RTK0EF0186B02000BJ)
and microSD (RTK0EF0186B01000BJ) sub-boards via the CN15 connector on the
RZ/V2H EVK. These overlays make use of shared DTSI fragments
(`rzv2-evk-cn15-emmc-common.dtsi` and `rzv2-evk-cn15-sd-common.dtsi`)
that encapsulate common CN15-specific configurations, including pinctrl
settings, SDHI0 setup, and required regulators.

Additionally, the base board DTS is updated to define an `mmc0` alias
pointing to `&sdhi0`, and to add a fixed 1.8V regulator node (`reg_1p8v`)
intended for use by the optional eMMC sub-board and, in the future, the
ADV7535 HDMI encoder (not yet enabled in the DTS).

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 arch/arm64/boot/dts/renesas/Makefile             |  4 ++++
 .../r9a09g057h44-rzv2h-evk-cn15-emmc.dtso        | 15 +++++++++++++++
 .../renesas/r9a09g057h44-rzv2h-evk-cn15-sd.dtso  | 16 ++++++++++++++++
 .../boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts  | 10 ++++++++++
 4 files changed, 45 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-emmc.dtso
 create mode 100644 arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-sd.dtso

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 130ef8f34d52..8fa93ca8204e 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -167,6 +167,10 @@ dtb-$(CONFIG_ARCH_R9A09G056) += r9a09g056n48-rzv2n-evk-cn15-sd.dtbo
 r9a09g056n48-rzv2n-evk-cn15-sd.dts := r9a09g056n48-rzv2n-evk.dtb r9a09g056n48-rzv2n-evk-cn15-sd.dtbo
 
 dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk.dtb
+dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk-cn15-emmc.dtbo
+r9a09g057h44-rzv2h-evk-cn15-emmc.dts := r9a09g057h44-rzv2h-evk.dtb r9a09g057h44-rzv2h-evk-cn15-emmc.dtbo
+dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk-cn15-sd.dtbo
+r9a09g057h44-rzv2h-evk-cn15-sd.dts := r9a09g057h44-rzv2h-evk.dtb r9a09g057h44-rzv2h-evk-cn15-sd.dtbo
 dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h48-kakip.dtb
 
 dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-ebisu-panel-aa104xd12.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-emmc.dtso b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-emmc.dtso
new file mode 100644
index 000000000000..b9a17f505efd
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-emmc.dtso
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree overlay for the RZ/V2H EVK with the eMMC sub-board
+ * (RTK0EF0186802000BJ) connected to the CN15 connector.
+ *
+ * Copyright (C) 2025 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#define RZV2H_PA		10
+#define EMMC_GPIO(port, pin)	RZG2L_GPIO(RZV2H_P##port, pin)
+
+#include "rzv2-evk-cn15-emmc-common.dtsi"
diff --git a/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-sd.dtso b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-sd.dtso
new file mode 100644
index 000000000000..47cb581c1add
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk-cn15-sd.dtso
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree overlay for the RZ/V2H EVK with the SD sub-board
+ * (RTK0EF0186B01000BJ) connected to the CN15 connector.
+ *
+ * Copyright (C) 2025 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#define RZV2H_PA		10
+#define SD_GPIO(port, pin)	RZG2L_GPIO(RZV2H_P##port, pin)
+#define SD_PORT_PINMUX(b, p, f)	RZG2L_PORT_PINMUX(RZV2H_P##b, p, f)
+
+#include "rzv2-evk-cn15-sd-common.dtsi"
diff --git a/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts
index 01b2e0c7c7db..219347d73753 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g057h44-rzv2h-evk.dts
@@ -25,6 +25,7 @@ aliases {
 		i2c6 = &i2c6;
 		i2c7 = &i2c7;
 		i2c8 = &i2c8;
+		mmc0 = &sdhi0;
 		mmc1 = &sdhi1;
 		serial0 = &scif;
 	};
@@ -55,6 +56,15 @@ 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";
 
-- 
2.49.0