[PATCH 4/4] arm64: dts: broadcom: Enable RP1 ADC for RPi5

Stanimir Varbanov
2025-09-25T00:05:31Z

Enable RP1 ADC for Raspberry Pi 5.

Signed-off-by: Stanimir Varbanov <svarbanov@suse.de>
---
arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts | 8 ++++++++
arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts | 5 +++++
2 files changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts
index 6ea3c102e0d6..7943ec3fd6ea 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b-ovl-rp1.dts
@@ -51,6 +51,14 @@ sd_vcc_reg: sd-vcc-reg {
enable-active-high;
gpios = <&gio_aon 4 GPIO_ACTIVE_HIGH>;
};
+
+ rp1_vdd_3v3: rp1_vdd_3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
};

/* The Debug UART, on Rpi5 it's on JST-SH 1.0mm 3-pin connector
diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
index c70d1cb7f3b6..cb75792b659a 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
@@ -24,6 +24,11 @@ &pcie2 {
status = "okay";
};

+&rp1_adc {
+ vref-supply = <&rp1_vdd_3v3>;
+ status = "okay";
+};
+
&rp1_eth {
status = "okay";
phy-mode = "rgmii-id";
--
2.47.0