linux-kernel - [PATCH 1/1] arm64: dts: rockchip: remove RTC for Radxa E52C

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Message-Id: <20260108100000.110354-1-amadeus@jmu.edu.cn>
Date: Thu,  8 Jan 2026 18:00:00 +0800
From: Chukun Pan <amadeus@....edu.cn>
To: Heiko Stuebner <heiko@...ech.de>
Cc: Rob Herring <robh@...nel.org>,
	Chukun Pan <amadeus@....edu.cn>,
	FUKAUMI Naoki <naoki@...xa.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH 1/1] arm64: dts: rockchip: remove RTC for Radxa E52C

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

Fixes: 9be4171219b6 ("arm64: dts: rockchip: Add Radxa E52C")
Signed-off-by: Chukun Pan <amadeus@....edu.cn>
---
 .../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>;
-- 
2.25.1