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authorVincent Pelletier <plr.vincent@gmail.com>2021-11-16 23:57:38 +0000
committerPalmer Dabbelt <palmer@rivosinc.com>2021-12-16 21:27:21 -0800
commit8120393b74b31bbaf293f59896de6b0d50febc48 (patch)
tree2de2ffd779b12b49ba2810dd185fb7892a7276f3 /arch/riscv
parentea81b91e4e256b0bb75d47ad3a5c230b2171a005 (diff)
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@gmail.com> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
index f8648ee1785a..d1f2289e529b 100644
--- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
@@ -59,6 +59,16 @@
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>;