From: Tianling Shen <cnsztl@gmail.com>
To: Rob Herring <robh+dt@kernel.org>,
Heiko Stuebner <heiko@sntech.de>,
Tianling Shen <cnsztl@gmail.com>, Pavel Machek <pavel@ucw.cz>,
Marty Jones <mj8263788@gmail.com>,
Jensen Huang <jensenhuang@friendlyarm.com>,
Chen-Yu Tsai <wens@csie.org>, John Clark <inindev@gmail.com>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4] arm64: dts: rockchip: add EEPROM node for NanoPi R4S
Date: Tue, 22 Jun 2021 11:45:05 +0800 [thread overview]
Message-ID: <20210622034505.18824-1-cnsztl@gmail.com> (raw)
NanoPi R4S has a EEPROM attached to the 2nd I2C bus (U92), which
stores the MAC address.
Changes in v4:
- Fixed typo error: `nvmem-cells-names` -> `nvmem-cell-names`
Changes in v3:
- Added address-cells and size-cells
Changes in v2:
- Added the size of EEPROM
- Added `mac-address` cell to pass the MAC address to kernel
- Removed `read-only` property in EEPROM node
Signed-off-by: Tianling Shen <cnsztl@gmail.com>
---
.../boot/dts/rockchip/rk3399-nanopi-r4s.dts | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
index cef4d18b599d..cd5541971170 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
@@ -68,6 +68,26 @@
status = "disabled";
};
+&gmac {
+ nvmem-cells = <&mac_address>;
+ nvmem-cell-names = "mac-address";
+};
+
+&i2c2 {
+ eeprom@51 {
+ compatible = "microchip,24c02", "atmel,24c02";
+ reg = <0x51>;
+ pagesize = <16>;
+ size = <256>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ mac_address: mac-address@fa {
+ reg = <0xfa 0x06>;
+ };
+ };
+};
+
&i2c4 {
status = "disabled";
};
--
2.17.1
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next reply other threads:[~2021-06-22 3:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 3:45 Tianling Shen [this message]
2022-09-11 4:06 [PATCH v4] arm64: dts: rockchip: add EEPROM node for NanoPi R4S Tianling Shen
2022-09-13 10:22 ` Heiko Stuebner
2022-09-13 14:44 ` Tianling Shen
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