From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.naobsd.org (sakura.naobsd.org [160.16.200.221]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5E0371D63C2 for ; Tue, 11 Nov 2025 05:10:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=160.16.200.221 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762837830; cv=none; b=gcyjEvgiHR8iw1nh+3wUJYxp5j4yJiDttY47dyAnXaRSUoIVE/7yBtqEDoyXSuqpo0wunJsYOjr/jSBAfbFwgn9kHNv9E8s3yD/AGRON3HFghHFvo9gZ5CDlizGWkCcmu4uz1sQNM5/6i99zLCUw5UMNesEea7BQa10aYMVQHiQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762837830; c=relaxed/simple; bh=JWZVUgjUNF8g1Bh8c604rN+A1N7K6q/1F6S58Ac9/H4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CtAVu+a3pFqMFoqU6q2OHsGdxKTTs8a3/dm+9qytolwwFmIQ4RJ7sBaLFTO8vN/8NDYJMpDEqNp56YolQRTU1a0W4sSIxdIIjbTi5iO6rMAEFxGCcymE2rF8THWzltLCLMww4KMw0v96ejRlY0rDvQwas33/DyEDNMD73tMm/II= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=radxa.com; spf=fail smtp.mailfrom=radxa.com; arc=none smtp.client-ip=160.16.200.221 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=radxa.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=radxa.com Received: from secure.fukaumi.org ([10.0.0.2]) by mail.naobsd.org (8.14.4/8.14.4/Debian-4.1ubuntu1.1) with ESMTP id 5AB59RuX021826; Tue, 11 Nov 2025 14:09:32 +0900 From: FUKAUMI Naoki To: heiko@sntech.de Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, jbx6244@gmail.com, pbrobinson@gmail.com, damon.ding@rock-chips.com, sebastian.reichel@collabora.com, kylepzak@projectinitiative.io, alchark@gmail.com, dsimic@manjaro.org, amadeus@jmu.edu.cn, devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org, FUKAUMI Naoki Subject: [PATCH 4/4] arm64: dts: rockchip: Make eeprom read-only for Radxa ROCK 3C/5A/5C Date: Tue, 11 Nov 2025 05:09:23 +0000 Message-ID: <20251111050924.54880-5-naoki@radxa.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251111050924.54880-1-naoki@radxa.com> References: <20251111050924.54880-1-naoki@radxa.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Make the BL24C16 EEPROM chips found on Radxa ROCK 3C, 5A and 5C SBCs read-only, because they contain factory-programmed data that isn't supposed to be modified by the end users. Fixes: ee219017ddb50 ("arm64: dts: rockchip: Add Radxa ROCK 3C") Fixes: 89c880808cff8 ("arm64: dts: rockchip: add I2C EEPROM to rock-5a") Fixes: 3ddf5cdb77e6e ("arm64: dts: rockchip: add Radxa ROCK 5C") Link: https://dl.radxa.com/rock3/docs/hw/3c/v1400/radxa_rock_3c_v1400_schematic.pdf p.13 Link: https://dl.radxa.com/rock5/5a/docs/hw/radxa_rock5a_V1.1_sch.pdf p.19 Link: https://dl.radxa.com/rock5/5c/docs/hw/v1100/radxa_rock_5c_schematic_v1100.pdf p.18 Link: https://github.com/radxa/u-boot/blob/next-dev-v2024.10/drivers/misc/radxa-i2c-eeprom.c Signed-off-by: FUKAUMI Naoki --- arch/arm64/boot/dts/rockchip/rk3566-rock-3c.dts | 1 + arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts | 1 + arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts | 1 + 3 files changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3566-rock-3c.dts b/arch/arm64/boot/dts/rockchip/rk3566-rock-3c.dts index 80ac40555e023..fa28b32f69108 100644 --- a/arch/arm64/boot/dts/rockchip/rk3566-rock-3c.dts +++ b/arch/arm64/boot/dts/rockchip/rk3566-rock-3c.dts @@ -466,6 +466,7 @@ eeprom: eeprom@50 { compatible = "belling,bl24c16a", "atmel,24c16"; reg = <0x50>; pagesize = <16>; + read-only; vcc-supply = <&vcca1v8_pmu>; }; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts index 041a0fff22ccb..d844a842d4cce 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@50 { compatible = "belling,bl24c16a", "atmel,24c16"; reg = <0x50>; pagesize = <16>; + read-only; vcc-supply = <&vcc_3v3_pmu>; }; }; diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts index dd7317bab6135..665eecce063a8 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts @@ -325,6 +325,7 @@ eeprom@50 { compatible = "belling,bl24c16a", "atmel,24c16"; reg = <0x50>; pagesize = <16>; + read-only; vcc-supply = <&vcc_3v3_pmu>; }; }; -- 2.43.0