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Message-Id: <589539cd08e35c35b269a769caeac40b85ffd01c.1637362542.git.plr.vincent@gmail.com>
Date: Fri, 19 Nov 2021 22:55:38 +0000
From: Vincent Pelletier <plr.vincent@...il.com>
To: Rob Herring <robh+dt@...nel.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
Qiu Wenbo <qiuwenbo@...inos.com.cn>,
devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org,
David Abdurachmanov <david.abdurachmanov@...ive.com>
Subject: [PATCH v3 2/6] riscv: dts: sifive unmatched: Expose the board ID eeprom
Mark it as read-only as it is factory-programmed with identifying
information, and no executable nor configuration:
- eth MAC address
- board model (PCB version, BoM version)
- board serial number
Accidental modification would cause misidentification which could brick
the board, so marking read-only seem like both a safe and non-constraining
choice.
Signed-off-by: Vincent Pelletier <plr.vincent@...il.com>
---
Changes since v2:
- Fix end-of-commit-message separator so change lists do not end up in them.
Changes since v1:
- Remove trailing "." on subject line.
---
arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
index 305a086e5207..cf8937708829 100644
--- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
@@ -58,6 +58,16 @@ temperature-sensor@4c {
interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
};
+ eeprom@54 {
+ compatible = "microchip,24c02", "atmel,24c02";
+ reg = <0x54>;
+ vcc-supply = <&vdd_bpro>;
+ label = "board-id";
+ pagesize = <16>;
+ read-only;
+ size = <256>;
+ };
+
pmic@58 {
compatible = "dlg,da9063";
reg = <0x58>;
--
2.33.1
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