linux-kernel - [PATCH 6/9] arm64: dts: rockchip: add EEPROM found on RK3399 Puma Haikou

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Message-Id: <20250218-tsd-align-haikou-v1-6-5c44d1dd8658@cherry.de>
Date: Tue, 18 Feb 2025 12:49:17 +0100
From: Quentin Schulz <foss+kernel@...il.net>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Quentin Schulz <quentin.schulz@...rry.de>
Subject: [PATCH 6/9] arm64: dts: rockchip: add EEPROM found on RK3399 Puma
 Haikou

From: Quentin Schulz <quentin.schulz@...rry.de>

The Haikou carrierboard has an EEPROM on LVDS_BLC_CLK/DAT which are
signals that can carry either I2C or be used as HPD for eDP0/1.

Only eDP0 is routed from RK3399 Puma SoM but only exposed on Haikou
through the Video Connector, a fake PCIe connector. So to be able to use
eDP one would need to use a Device Tree overlay. Therefore, let's
default to having an EEPROM in Haikou carrierboard DTS.

Signed-off-by: Quentin Schulz <quentin.schulz@...rry.de>
---
 arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts b/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
index df8a8ec582ecc6830ef11be372f204057759d1f3..bea146d0d3f02afaf5e406d61d9a8ab7476fa8df 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
@@ -185,6 +185,16 @@ sgtl5000: codec@a {
 	};
 };
 
+&i2c7 {
+	eeprom@50 {
+		reg = <0x50>;
+		compatible = "atmel,24c01";
+		pagesize = <8>;
+		size = <128>;
+		vcc-supply = <&vcc3v3_baseboard>;
+	};
+};
+
 &i2s0 {
 	status = "okay";
 };

-- 
2.48.1