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