From: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Date: Sun, 5 Oct 2025 11:13:21 +0000 (+0300)
Subject: arm64: dts: renesas: rzt2h/rzn2h-evk: Enable ADCs
X-Git-Tag: v6.19-rc1~100^2~32^2~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62fb11fba0cc12ecb808fc57b16027b94bd1ba1a;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: renesas: rzt2h/rzn2h-evk: Enable ADCs

The ADCs on RZ/T2H and RZ/N2H are exposed on the evaluation kit boards.

Enable them.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251005111323.804638-6-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

diff --git a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
index 2bf867273ad0b..799c58afd6fed 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
@@ -182,3 +182,31 @@
 			 <RZT2H_PORT_PINMUX(0, 1, 0x13)>; /* OVRCUR */
 	};
 };
+
+&adc2 {
+	status = "okay";
+
+	channel@0 {
+		reg = <0x0>;
+	};
+
+	channel@1 {
+		reg = <0x1>;
+	};
+
+	channel@2 {
+		reg = <0x2>;
+	};
+
+	channel@3 {
+		reg = <0x3>;
+	};
+
+	channel@4 {
+		reg = <0x4>;
+	};
+
+	channel@5 {
+		reg = <0x5>;
+	};
+};
diff --git a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
index 084b3a0c80524..d698b6368ee7c 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
@@ -227,3 +227,67 @@
 			 <RZT2H_PORT_PINMUX(2, 3, 0x13)>; /* OVRCUR */
 	};
 };
+
+&adc2 {
+	status = "okay";
+
+	channel@0 {
+		reg = <0x0>;
+	};
+
+	channel@1 {
+		reg = <0x1>;
+	};
+
+	channel@2 {
+		reg = <0x2>;
+	};
+
+	channel@3 {
+		reg = <0x3>;
+	};
+
+	channel@4 {
+		reg = <0x4>;
+	};
+
+	channel@5 {
+		reg = <0x5>;
+	};
+
+	channel@6 {
+		reg = <0x6>;
+	};
+
+	channel@7 {
+		reg = <0x7>;
+	};
+
+	channel@8 {
+		reg = <0x8>;
+	};
+
+	channel@9 {
+		reg = <0x9>;
+	};
+
+	channel@a {
+		reg = <0xa>;
+	};
+
+	channel@b {
+		reg = <0xb>;
+	};
+
+	channel@c {
+		reg = <0xc>;
+	};
+
+	channel@d {
+		reg = <0xd>;
+	};
+
+	channel@e {
+		reg = <0xe>;
+	};
+};
diff --git a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
index 5c91002c99c48..924a38c6cb0ff 100644
--- a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
@@ -244,3 +244,82 @@
 	status = "okay";
 	timeout-sec = <60>;
 };
+
+/*
+ * ADC0 AN000 can be connected to a potentiometer on the board or
+ * exposed on ADC header.
+ *
+ * T2H:
+ * SW17[1] = ON, SW17[2] = OFF - Potentiometer
+ * SW17[1] = OFF, SW17[2] = ON  - CN41 header
+ * N2H:
+ * DSW6[1] = OFF, DSW6[2] = ON - Potentiometer
+ * DSW6[1] = ON, DSW6[2] = OFF - CN3 header
+ */
+&adc0 {
+	status = "okay";
+
+	channel@0 {
+		reg = <0x0>;
+	};
+
+	channel@1 {
+		reg = <0x1>;
+	};
+
+	channel@2 {
+		reg = <0x2>;
+	};
+
+	channel@3 {
+		reg = <0x3>;
+	};
+};
+
+/*
+ * ADC1 AN100 can be exposed on ADC header or on mikroBUS connector.
+ *
+ * T2H:
+ * SW18[1] = ON, SW18[2] = OFF - CN42 header
+ * SW18[1] = OFF, SW18[2] = ON - mikroBUS
+ * N2H:
+ * DSW6[3] = ON, DSW6[4] = OFF - CN4 header
+ * DSW6[3] = OFF, DSW6[4] = ON - mikroBUS
+ *
+ * ADC1 AN101 can be exposed on ADC header or on Grove2 connector.
+ *
+ * T2H:
+ * SW18[3] = ON, SW18[4] = OFF - CN42 header
+ * SW18[3] = OFF, SW18[4] = ON - Grove2
+ * N2H:
+ * DSW6[5] = ON, DSW6[6] = OFF - CN4 header
+ * DSW6[5] = OFF, DSW6[6] = ON - Grove2
+ *
+ * ADC1 AN102 can be exposed on ADC header or on Grove2 connector.
+ *
+ * T2H:
+ * SW18[5] = ON, SW18[6] = OFF - CN42 header
+ * SW18[5] = OFF, SW18[6] = ON - Grove2
+ * N2H:
+ * DSW6[7] = ON, DSW6[8] = OFF - CN4 header
+ * DSW6[7] = OFF, DSW6[8] = ON - Grove2
+ */
+&adc1 {
+	status = "okay";
+
+	channel@0 {
+		reg = <0x0>;
+	};
+
+	channel@1 {
+		reg = <0x1>;
+	};
+
+	channel@2 {
+		reg = <0x2>;
+	};
+
+	channel@3 {
+		reg = <0x3>;
+	};
+};