From: Aurelien Jarno <aurelien@aurel32.net>
To: linux-kernel@vger.kernel.org, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@kernel.org>,
Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>
Cc: Aurelien Jarno <aurelien@aurel32.net>,
Javier Martinez Canillas <javierm@redhat.com>,
devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
FLATTENED DEVICE TREE BINDINGS),
linux-riscv@lists.infradead.org (open list:RISC-V SPACEMIT SoC
Support),
spacemit@lists.linux.dev (open list:RISC-V SPACEMIT SoC Support)
Subject: [PATCH v2 2/6] riscv: dts: spacemit: add 24c04 eeprom on Milk-V Jupiter
Date: Thu, 26 Mar 2026 19:35:30 +0100 [thread overview]
Message-ID: <20260326183745.1370642-3-aurelien@aurel32.net> (raw)
In-Reply-To: <20260326183745.1370642-1-aurelien@aurel32.net>
The Milk-V Jupiter board includes a 24c04 eeprom on the i2c2 bus. The
eeprom contains an ONIE TLV table, which on the board I tested only
provides a product-name entry. Expose it via an onie,tlv-layout nvmem
layout.
The eeprom is marked as read-only since its contents are not supposed to
be modified.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
.../boot/dts/spacemit/k1-milkv-jupiter.dts | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)
v2:
- Collect Reviewed-by:
diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index 3cd83c5924e4f..bd48208a370cf 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -108,6 +108,28 @@ &pdma {
status = "okay";
};
+&i2c2 {
+ pinctrl-0 = <&i2c2_0_cfg>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ eeprom@50 {
+ compatible = "atmel,24c04";
+ reg = <0x50>;
+ vcc-supply = <&buck3_1v8>; /* EEPROM_VCC18 */
+ pagesize = <16>;
+ read-only;
+ size = <512>;
+
+ nvmem-layout {
+ compatible = "onie,tlv-layout";
+
+ product-name {
+ };
+ };
+ };
+};
+
&i2c8 {
pinctrl-0 = <&i2c8_cfg>;
pinctrl-names = "default";
--
2.51.0
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next prev parent reply other threads:[~2026-03-26 18:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-26 18:35 [PATCH v2 0/6] riscv: dts: spacemit: enable more devices on Milk-V Jupiter Aurelien Jarno
2026-03-26 18:35 ` [PATCH v2 1/6] riscv: dts: spacemit: add LEDs for Milk-V Jupiter board Aurelien Jarno
2026-03-26 18:35 ` Aurelien Jarno [this message]
2026-03-26 18:35 ` [PATCH v2 3/6] riscv: dts: spacemit: add i2c aliases on Milk-V Jupiter Aurelien Jarno
2026-03-26 18:35 ` [PATCH v2 4/6] riscv: dts: spacemit: enable QSPI and add SPI NOR " Aurelien Jarno
2026-03-26 18:35 ` [PATCH v2 5/6] riscv: dts: spacemit: enable USB 3 ports " Aurelien Jarno
2026-03-26 18:35 ` [PATCH v2 6/6] riscv: dts: spacemit: enable PCIe " Aurelien Jarno
2026-03-27 2:10 ` [PATCH v2 0/6] riscv: dts: spacemit: enable more devices " Yixun Lan
2026-03-27 11:39 ` Yixun Lan
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