From: Chukun Pan <amadeus@jmu.edu.cn>
To: Yixun Lan <dlan@kernel.org>
Cc: Rob Herring <robh@kernel.org>, Paul Walmsley <pjw@kernel.org>,
Alexandre Ghiti <alex@ghiti.fr>,
Albert Ou <aou@eecs.berkeley.edu>,
Conor Dooley <conor+dt@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, spacemit@lists.linux.dev,
Chukun Pan <amadeus@jmu.edu.cn>
Subject: [PATCH 1/1] riscv: dts: spacemit: enable onboard eeprom for OrangePi
Date: Tue, 1 Sep 2026 16:00:10 +0800 [thread overview]
Message-ID: <20260901080010.95040-1-amadeus@jmu.edu.cn> (raw)
Enable the i2c2 bus and add the connected GT24C02B EEPROM.
[ 6.766] TlvInfo Header:
[ 6.766] Id String: TlvInfo
[ 6.769] Version: 1
[ 6.772] Total Length: 38
[ 6.775] TLV Name Code Len Value
[ 6.779] -------------------- ---- --- -----
[ 6.783] Base MAC Address 0x24 6 .....
[ 6.788] MAC Addresses 0x2A 2 2
[ 6.792] Product Name 0x21 15 x1_orangepi-r2s
[ 6.797] Unknown 0x41 1 0x01
[ 6.801] CRC-32 0xFE 4 0xE5A74B18
[ 6.806] Checksum is valid.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
---
This patch depends on the following to avoid conflicts:
https://lore.kernel.org/lkml/20260802100101.327815-1-amadeus@jmu.edu.cn/
---
.../boot/dts/spacemit/k1-orangepi-r2s.dts | 30 ++++++++++++++++++
.../boot/dts/spacemit/k1-orangepi-rv2.dts | 31 +++++++++++++++++++
2 files changed, 61 insertions(+)
diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
index 2d1ba34cb00e..7125f2882ce8 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
@@ -13,6 +13,7 @@ / {
compatible = "xunlong,orangepi-r2s", "spacemit,k1";
aliases {
+ i2c2 = &i2c2;
i2c8 = &i2c8;
serial0 = &uart0;
ethernet0 = ð0;
@@ -112,6 +113,35 @@ rgmii1: phy@1 {
};
};
+&i2c2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c2_0_cfg>;
+ status = "okay";
+
+ eeprom@50 {
+ compatible = "atmel,24c02";
+ reg = <0x50>;
+ pagesize = <16>;
+ size = <256>;
+ read-only;
+ vcc-supply = <&buck3_1v8>;
+
+ nvmem-layout {
+ compatible = "onie,tlv-layout";
+
+ mac-address {
+ #nvmem-cell-cells = <1>;
+ };
+
+ num-macs {
+ };
+
+ product-name {
+ };
+ };
+ };
+};
+
&i2c8 {
pinctrl-names = "default";
pinctrl-0 = <&i2c8_cfg>;
diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
index f7547a4da71a..837616255464 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
@@ -17,6 +17,8 @@ aliases {
serial0 = &uart0;
ethernet0 = ð0;
ethernet1 = ð1;
+ i2c2 = &i2c2;
+ i2c8 = &i2c8;
mmc0 = &emmc;
mmc1 = &sdhci0;
};
@@ -138,6 +140,35 @@ rgmii1: phy@1 {
};
};
+&i2c2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c2_0_cfg>;
+ status = "okay";
+
+ eeprom@50 {
+ compatible = "atmel,24c02";
+ reg = <0x50>;
+ pagesize = <16>;
+ size = <256>;
+ read-only;
+ vcc-supply = <&buck3_1v8>;
+
+ nvmem-layout {
+ compatible = "onie,tlv-layout";
+
+ mac-address {
+ #nvmem-cell-cells = <1>;
+ };
+
+ num-macs {
+ };
+
+ product-name {
+ };
+ };
+ };
+};
+
&i2c8 {
pinctrl-names = "default";
pinctrl-0 = <&i2c8_cfg>;
--
2.34.1
next reply other threads:[~2026-09-01 8:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 8:00 Chukun Pan [this message]
2026-09-05 17:05 ` Gong Shuai
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