[PATCH 2/4] arm64: dts: rockchip: Add eeprom vcc-supply for Radxa ROCK 5A

FUKAUMI Naoki naoki at radxa.com
Mon Nov 10 21:09:21 PST 2025


The VCC supply for the BL24C16 EEPROM chip found on Radxa ROCK 5A is
vcc_3v3_pmu, which is routed to vcc_3v3_s3 via a zero-ohm resistor.
Describe this supply.

Fixes: 89c880808cff8 ("arm64: dts: rockchip: add I2C EEPROM to rock-5a")
Link: https://dl.radxa.com/rock5/5a/docs/hw/radxa_rock5a_V1.1_sch.pdf p.19
Signed-off-by: FUKAUMI Naoki <naoki at radxa.com>
---
 arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
index 428c6f0232a34..041a0fff22ccb 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
@@ -233,6 +233,7 @@ eeprom: eeprom at 50 {
 		compatible = "belling,bl24c16a", "atmel,24c16";
 		reg = <0x50>;
 		pagesize = <16>;
+		vcc-supply = <&vcc_3v3_pmu>;
 	};
 };
 
@@ -600,7 +601,7 @@ regulator-state-mem {
 				};
 			};
 
-			vcc_3v3_s3: dcdc-reg8 {
+			vcc_3v3_pmu: vcc_3v3_s3: dcdc-reg8 {
 				regulator-name = "vcc_3v3_s3";
 				regulator-always-on;
 				regulator-boot-on;
-- 
2.43.0




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