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[2001:470:c:1200::2]) by smtp.googlemail.com with ESMTPSA id a11sm7360909ioq.12.2021.06.19.21.41.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Jun 2021 21:41:50 -0700 (PDT) From: Tianling Shen To: Rob Herring , Heiko Stuebner , Tianling Shen , Jensen Huang , Pavel Machek , Marty Jones , Chen-Yu Tsai Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v3] arm64: dts: rockchip: add EEPROM node for NanoPi R4S Date: Sun, 20 Jun 2021 12:38:02 +0800 Message-Id: <20210620043802.6580-1-cnsztl@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org NanoPi R4S has a EEPROM attached to the 2nd I2C bus (U92), which stores the MAC address. 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 --- .../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..2813c4a0378d 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-cells-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"; };