Re: [PATCH 1/1] arm64: dts: rockchip: remove RTC for Radxa E52C

From: FUKAUMI Naoki
Date: Thu Jan 08 2026 - 05:46:41 EST


Hi Chukun,

On 1/8/26 19:00, Chukun Pan wrote:
According to the Radxa E52C Schematic [1], both the i2c5 bus and the
hym8563 chip are marked as NC. Remove them to avoid the following log:

rtc-hym8563 5-0051: could not init device, -110
rtc-hym8563 5-0051: probe with driver rtc-hym8563 failed with error -110

[1] https://dl.radxa.com/e/e52c/hw/radxa_e52c_v1.2_schematic.pdf

V1.209 and later should have RTC. What version do you have?

Best regards,

--
FUKAUMI Naoki
Radxa Computer (Shenzhen) Co., Ltd.

Fixes: 9be4171219b6 ("arm64: dts: rockchip: Add Radxa E52C")
Signed-off-by: Chukun Pan <amadeus@xxxxxxxxxx>
---
.../boot/dts/rockchip/rk3582-radxa-e52c.dts | 24 -------------------
1 file changed, 24 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3582-radxa-e52c.dts b/arch/arm64/boot/dts/rockchip/rk3582-radxa-e52c.dts
index 854c118418eb..c24ff264cae2 100644
--- a/arch/arm64/boot/dts/rockchip/rk3582-radxa-e52c.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3582-radxa-e52c.dts
@@ -266,24 +266,6 @@ regulator-state-mem {
};
};
-&i2c5 {
- pinctrl-names = "default";
- pinctrl-0 = <&i2c5m2_xfer>;
- status = "okay";
-
- rtc@51 {
- compatible = "haoyu,hym8563";
- reg = <0x51>;
- #clock-cells = <0>;
- clock-output-names = "rtcic_32kout";
- interrupt-parent = <&gpio0>;
- interrupts = <RK_PB0 IRQ_TYPE_LEVEL_LOW>;
- pinctrl-names = "default";
- pinctrl-0 = <&rtc_int_l>;
- wakeup-source;
- };
-};
-
&pcie2x1l1 {
pinctrl-names = "default";
pinctrl-0 = <&pcie20x1_1_perstn_m1>;
@@ -329,12 +311,6 @@ vcc_5v0_pwren_h: vcc-5v0-pwren-h {
};
};
- rtc {
- rtc_int_l: rtc-int-l {
- rockchip,pins = <0 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;
- };
- };
-
usb {
usb_otg_pwren_h: usb-otg-pwren-h {
rockchip,pins = <0 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;