From: Tianling Shen Date: Fri, 25 Dec 2020 12:03:14 +0000 (+0800) Subject: rockchip: add NanoPi R4S support X-Git-Tag: v22.03.0-rc1~2378 X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=b72157984268b6542dd667859e4aed9cc2bbb7f5;p=openwrt%2Fstaging%2Fhauke.git rockchip: add NanoPi R4S support Hardware -------- RockChip RK3399 ARM64 (6 cores) 4GB LPDDR4 RAM 2x 1000 Base-T 3 LEDs (LAN / WAN / SYS) 1 Button (Reset) Micro-SD slot 2x USB 3.0 Port Installation ------------ Uncompress the OpenWrt sysupgrade and write it to a micro SD card using dd. ===================================== NOTICE FOR USERS WHO USE 1GB VERSION: BY NOW IT IS NOT SUPPORTED ==================================== [initialed target] Co-developed-by: Marty Jones Signed-off-by: Marty Jones [fixed bootscript] Co-developed-by: Jayantajit Gogoi Signed-off-by: Jayantajit Gogoi Signed-off-by: Tianling Shen --- diff --git a/target/linux/rockchip/Makefile b/target/linux/rockchip/Makefile index 7aeb0a3d55..f7b6995911 100644 --- a/target/linux/rockchip/Makefile +++ b/target/linux/rockchip/Makefile @@ -4,7 +4,7 @@ include $(TOPDIR)/rules.mk BOARD:=rockchip BOARDNAME:=Rockchip -FEATURES:=ext4 audio usb usbgadget display gpio fpu rootfs-part boot-part squashfs +FEATURES:=ext4 audio usb usbgadget display gpio fpu pci pcie rootfs-part boot-part squashfs SUBTARGETS:=armv8 KERNEL_PATCHVER=5.4 diff --git a/target/linux/rockchip/armv8/base-files/etc/board.d/01_leds b/target/linux/rockchip/armv8/base-files/etc/board.d/01_leds index e97ea3312d..b10c43ba60 100644 --- a/target/linux/rockchip/armv8/base-files/etc/board.d/01_leds +++ b/target/linux/rockchip/armv8/base-files/etc/board.d/01_leds @@ -12,6 +12,10 @@ friendlyarm,nanopi-r2s) ucidef_set_led_netdev "wan" "WAN" "$boardname:green:wan" "eth0" ucidef_set_led_netdev "lan" "LAN" "$boardname:green:lan" "eth1" ;; +friendlyarm,nanopi-r4s) + ucidef_set_led_netdev "wan" "WAN" "green:wan" "eth0" + ucidef_set_led_netdev "lan" "LAN" "green:lan" "eth1" + ;; esac board_config_flush diff --git a/target/linux/rockchip/armv8/base-files/etc/board.d/02_network b/target/linux/rockchip/armv8/base-files/etc/board.d/02_network index 8371913f8a..91bdb760d5 100644 --- a/target/linux/rockchip/armv8/base-files/etc/board.d/02_network +++ b/target/linux/rockchip/armv8/base-files/etc/board.d/02_network @@ -7,7 +7,8 @@ rockchip_setup_interfaces() local board="$1" case "$board" in - friendlyarm,nanopi-r2s) + friendlyarm,nanopi-r2s|\ + friendlyarm,nanopi-r4s) ucidef_set_interfaces_lan_wan 'eth1' 'eth0' ;; *) @@ -35,6 +36,10 @@ rockchip_setup_macs() wan_mac=$(nanopi_r2s_generate_mac) lan_mac=$(macaddr_add "$wan_mac" 1) ;; + friendlyarm,nanopi-r4s) + wan_mac=$(get_mac_binary "/sys/bus/i2c/devices/2-0051/eeprom" 0xfa) + lan_mac=$(macaddr_setbit_la "$wan_mac") + ;; esac [ -n "$lan_mac" ] && ucidef_set_interface_macaddr "lan" $lan_mac diff --git a/target/linux/rockchip/armv8/base-files/etc/hotplug.d/net/40-net-smp-affinity b/target/linux/rockchip/armv8/base-files/etc/hotplug.d/net/40-net-smp-affinity index 44716258bf..9e4a4cf4fc 100644 --- a/target/linux/rockchip/armv8/base-files/etc/hotplug.d/net/40-net-smp-affinity +++ b/target/linux/rockchip/armv8/base-files/etc/hotplug.d/net/40-net-smp-affinity @@ -26,5 +26,9 @@ friendlyarm,nanopi-r2s) set_interface_core 2 "eth0" set_interface_core 4 "eth1" "xhci-hcd:usb3" ;; +friendlyarm,nanopi-r4s) + set_interface_core 10 "eth0" + set_interface_core 20 "eth1" + ;; esac diff --git a/target/linux/rockchip/armv8/config-5.10 b/target/linux/rockchip/armv8/config-5.10 index c85984a982..734530a9c7 100644 --- a/target/linux/rockchip/armv8/config-5.10 +++ b/target/linux/rockchip/armv8/config-5.10 @@ -197,6 +197,7 @@ CONFIG_DWMAC_DWC_QOS_ETH=y CONFIG_DWMAC_GENERIC=y CONFIG_DWMAC_ROCKCHIP=y CONFIG_EDAC_SUPPORT=y +CONFIG_EEPROM_AT24=y CONFIG_EMAC_ROCKCHIP=y CONFIG_ENABLE_MUST_CHECK=y CONFIG_ENERGY_MODEL=y diff --git a/target/linux/rockchip/armv8/config-5.4 b/target/linux/rockchip/armv8/config-5.4 index 7aadb477cb..0844401c2e 100644 --- a/target/linux/rockchip/armv8/config-5.4 +++ b/target/linux/rockchip/armv8/config-5.4 @@ -182,6 +182,7 @@ CONFIG_DWMAC_DWC_QOS_ETH=y CONFIG_DWMAC_GENERIC=y CONFIG_DWMAC_ROCKCHIP=y CONFIG_EDAC_SUPPORT=y +CONFIG_EEPROM_AT24=y CONFIG_EMAC_ROCKCHIP=y CONFIG_ENABLE_MUST_CHECK=y CONFIG_ENERGY_MODEL=y diff --git a/target/linux/rockchip/image/armv8.mk b/target/linux/rockchip/image/armv8.mk index 24b1c38137..ee411d266b 100644 --- a/target/linux/rockchip/image/armv8.mk +++ b/target/linux/rockchip/image/armv8.mk @@ -12,6 +12,17 @@ define Device/friendlyarm_nanopi-r2s endef TARGET_DEVICES += friendlyarm_nanopi-r2s +define Device/friendlyarm_nanopi-r4s + DEVICE_VENDOR := FriendlyARM + DEVICE_MODEL := NanoPi R4S + DEVICE_VARIANT := 4GB LPDDR4 + SOC := rk3399 + UBOOT_DEVICE_NAME := nanopi-r4s-rk3399 + IMAGE/sysupgrade.img.gz := boot-common | boot-script nanopi-r4s | pine64-img | gzip | append-metadata + DEVICE_PACKAGES := kmod-r8169 +endef +TARGET_DEVICES += friendlyarm_nanopi-r4s + define Device/pine64_rockpro64 DEVICE_VENDOR := Pine64 DEVICE_MODEL := RockPro64 diff --git a/target/linux/rockchip/image/nanopi-r4s.bootscript b/target/linux/rockchip/image/nanopi-r4s.bootscript new file mode 100644 index 0000000000..abe9c24ee3 --- /dev/null +++ b/target/linux/rockchip/image/nanopi-r4s.bootscript @@ -0,0 +1,8 @@ +part uuid mmc ${devnum}:2 uuid + +setenv bootargs "console=ttyS2,1500000 earlycon=uart8250,mmio32,0xff1a0000 root=PARTUUID=${uuid} rw rootwait" + +load mmc ${devnum}:1 ${fdt_addr_r} rockchip.dtb +load mmc ${devnum}:1 ${kernel_addr_r} kernel.img + +booti ${kernel_addr_r} - ${fdt_addr_r} diff --git a/target/linux/rockchip/patches-5.10/004-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch b/target/linux/rockchip/patches-5.10/004-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch new file mode 100644 index 0000000000..461a5ae7dd --- /dev/null +++ b/target/linux/rockchip/patches-5.10/004-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch @@ -0,0 +1,177 @@ +From db792e9adbf85ffc9d6b0b060ac3c8e3148c8992 Mon Sep 17 00:00:00 2001 +From: Tianling Shen +Date: Fri, 19 Mar 2021 13:16:27 +0800 +Subject: [PATCH] rockchip: rk3399: Add support for FriendlyARM NanoPi R4S + +This adds support for the NanoPi R4S from FriendlyArm. + +Rockchip RK3399 SoC +1GB DDR3 or 4GB LPDDR4 RAM +Gigabit Ethernet (WAN) +Gigabit Ethernet (PCIe) (LAN) +USB 3.0 Port x 2 +MicroSD slot +Reset button +WAN - LAN - SYS LED + +Co-developed-by: Jensen Huang +Signed-off-by: Jensen Huang +[minor adjustments] +Co-developed-by: Marty Jones +Signed-off-by: Marty Jones +[further adjustments, fixed format issues] +Signed-off-by: Tianling Shen +Link: https://lore.kernel.org/r/20210319051627.814-2-cnsztl@gmail.com +Signed-off-by: Heiko Stuebner +--- + arch/arm64/boot/dts/rockchip/Makefile | 1 + + .../boot/dts/rockchip/rk3399-nanopi-r4s.dts | 133 +++++++++++++++++++++ + 2 files changed, 134 insertions(+) + create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts + +--- a/arch/arm64/boot/dts/rockchip/Makefile ++++ b/arch/arm64/boot/dts/rockchip/Makefile +@@ -30,6 +30,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-le + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopc-t4.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-m4.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-neo4.dtb ++dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-r4s.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-orangepi.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-pinebook-pro.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb +--- /dev/null ++++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts +@@ -0,0 +1,133 @@ ++// SPDX-License-Identifier: (GPL-2.0+ OR MIT) ++/* ++ * FriendlyElec NanoPC-T4 board device tree source ++ * ++ * Copyright (c) 2020 FriendlyElec Computer Tech. Co., Ltd. ++ * (http://www.friendlyarm.com) ++ * ++ * Copyright (c) 2018 Collabora Ltd. ++ * ++ * Copyright (c) 2020 Jensen Huang ++ * Copyright (c) 2020 Marty Jones ++ * Copyright (c) 2021 Tianling Shen ++ */ ++ ++/dts-v1/; ++#include "rk3399-nanopi4.dtsi" ++ ++/ { ++ model = "FriendlyElec NanoPi R4S"; ++ compatible = "friendlyarm,nanopi-r4s", "rockchip,rk3399"; ++ ++ /delete-node/ display-subsystem; ++ ++ gpio-leds { ++ pinctrl-0 = <&lan_led_pin>, <&sys_led_pin>, <&wan_led_pin>; ++ ++ /delete-node/ led-0; ++ ++ lan_led: led-lan { ++ gpios = <&gpio1 RK_PA1 GPIO_ACTIVE_HIGH>; ++ label = "green:lan"; ++ }; ++ ++ sys_led: led-sys { ++ gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>; ++ label = "red:sys"; ++ default-state = "on"; ++ }; ++ ++ wan_led: led-wan { ++ gpios = <&gpio1 RK_PA0 GPIO_ACTIVE_HIGH>; ++ label = "green:wan"; ++ }; ++ }; ++ ++ gpio-keys { ++ pinctrl-0 = <&reset_button_pin>; ++ ++ /delete-node/ power; ++ ++ reset { ++ debounce-interval = <50>; ++ gpios = <&gpio1 RK_PC6 GPIO_ACTIVE_LOW>; ++ label = "reset"; ++ linux,code = ; ++ }; ++ }; ++ ++ vdd_5v: vdd-5v { ++ compatible = "regulator-fixed"; ++ regulator-name = "vdd_5v"; ++ regulator-always-on; ++ regulator-boot-on; ++ }; ++}; ++ ++&emmc_phy { ++ status = "disabled"; ++}; ++ ++&i2c4 { ++ status = "disabled"; ++}; ++ ++&pcie0 { ++ max-link-speed = <1>; ++ num-lanes = <1>; ++ vpcie3v3-supply = <&vcc3v3_sys>; ++}; ++ ++&pinctrl { ++ gpio-leds { ++ /delete-node/ status-led-pin; ++ ++ lan_led_pin: lan-led-pin { ++ rockchip,pins = <1 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>; ++ }; ++ ++ sys_led_pin: sys-led-pin { ++ rockchip,pins = <0 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>; ++ }; ++ ++ wan_led_pin: wan-led-pin { ++ rockchip,pins = <1 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>; ++ }; ++ }; ++ ++ rockchip-key { ++ /delete-node/ power-key; ++ ++ reset_button_pin: reset-button-pin { ++ rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_up>; ++ }; ++ }; ++}; ++ ++&sdhci { ++ status = "disabled"; ++}; ++ ++&sdio0 { ++ status = "disabled"; ++}; ++ ++&u2phy0_host { ++ phy-supply = <&vdd_5v>; ++}; ++ ++&u2phy1_host { ++ status = "disabled"; ++}; ++ ++&uart0 { ++ status = "disabled"; ++}; ++ ++&usbdrd_dwc3_0 { ++ dr_mode = "host"; ++}; ++ ++&vcc3v3_sys { ++ vin-supply = <&vcc5v0_sys>; ++}; diff --git a/target/linux/rockchip/patches-5.10/005-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch b/target/linux/rockchip/patches-5.10/005-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch new file mode 100644 index 0000000000..792028b292 --- /dev/null +++ b/target/linux/rockchip/patches-5.10/005-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch @@ -0,0 +1,31 @@ +From af20b3384e8723077cc6484160b0cf4e9be321de Mon Sep 17 00:00:00 2001 +From: Tianling Shen +Date: Mon, 7 Jun 2021 15:45:37 +0800 +Subject: [PATCH] arm64: dts: rockchip: add EEPROM node for NanoPi R4S + +NanoPi R4S has a EEPROM attached to the 2nd I2C bus (U92), which +stores the MAC address. + +Signed-off-by: Tianling Shen +--- + arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts | 9 +++++++++ + 1 file changed, 9 insertions(+) + +--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts ++++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts +@@ -68,6 +68,15 @@ + status = "disabled"; + }; + ++&i2c2 { ++ eeprom@51 { ++ compatible = "microchip,24c02", "atmel,24c02"; ++ reg = <0x51>; ++ pagesize = <16>; ++ read-only; /* This holds our MAC */ ++ }; ++}; ++ + &i2c4 { + status = "disabled"; + }; diff --git a/target/linux/rockchip/patches-5.4/007-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch b/target/linux/rockchip/patches-5.4/007-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch new file mode 100644 index 0000000000..c508d71317 --- /dev/null +++ b/target/linux/rockchip/patches-5.4/007-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch @@ -0,0 +1,177 @@ +From db792e9adbf85ffc9d6b0b060ac3c8e3148c8992 Mon Sep 17 00:00:00 2001 +From: Tianling Shen +Date: Fri, 19 Mar 2021 13:16:27 +0800 +Subject: [PATCH] rockchip: rk3399: Add support for FriendlyARM NanoPi R4S + +This adds support for the NanoPi R4S from FriendlyArm. + +Rockchip RK3399 SoC +1GB DDR3 or 4GB LPDDR4 RAM +Gigabit Ethernet (WAN) +Gigabit Ethernet (PCIe) (LAN) +USB 3.0 Port x 2 +MicroSD slot +Reset button +WAN - LAN - SYS LED + +Co-developed-by: Jensen Huang +Signed-off-by: Jensen Huang +[minor adjustments] +Co-developed-by: Marty Jones +Signed-off-by: Marty Jones +[further adjustments, fixed format issues] +Signed-off-by: Tianling Shen +Link: https://lore.kernel.org/r/20210319051627.814-2-cnsztl@gmail.com +Signed-off-by: Heiko Stuebner +--- + arch/arm64/boot/dts/rockchip/Makefile | 1 + + .../boot/dts/rockchip/rk3399-nanopi-r4s.dts | 133 +++++++++++++++++++++ + 2 files changed, 134 insertions(+) + create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts + +--- a/arch/arm64/boot/dts/rockchip/Makefile ++++ b/arch/arm64/boot/dts/rockchip/Makefile +@@ -25,6 +25,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-le + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopc-t4.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-m4.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-neo4.dtb ++dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-r4s.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-orangepi.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-puma-haikou.dtb + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-roc-pc.dtb +--- /dev/null ++++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts +@@ -0,0 +1,133 @@ ++// SPDX-License-Identifier: (GPL-2.0+ OR MIT) ++/* ++ * FriendlyElec NanoPC-T4 board device tree source ++ * ++ * Copyright (c) 2020 FriendlyElec Computer Tech. Co., Ltd. ++ * (http://www.friendlyarm.com) ++ * ++ * Copyright (c) 2018 Collabora Ltd. ++ * ++ * Copyright (c) 2020 Jensen Huang ++ * Copyright (c) 2020 Marty Jones ++ * Copyright (c) 2021 Tianling Shen ++ */ ++ ++/dts-v1/; ++#include "rk3399-nanopi4.dtsi" ++ ++/ { ++ model = "FriendlyElec NanoPi R4S"; ++ compatible = "friendlyarm,nanopi-r4s", "rockchip,rk3399"; ++ ++ /delete-node/ display-subsystem; ++ ++ gpio-leds { ++ pinctrl-0 = <&lan_led_pin>, <&sys_led_pin>, <&wan_led_pin>; ++ ++ /delete-node/ status; ++ ++ lan_led: led-lan { ++ gpios = <&gpio1 RK_PA1 GPIO_ACTIVE_HIGH>; ++ label = "green:lan"; ++ }; ++ ++ sys_led: led-sys { ++ gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>; ++ label = "red:sys"; ++ default-state = "on"; ++ }; ++ ++ wan_led: led-wan { ++ gpios = <&gpio1 RK_PA0 GPIO_ACTIVE_HIGH>; ++ label = "green:wan"; ++ }; ++ }; ++ ++ gpio-keys { ++ pinctrl-0 = <&reset_button_pin>; ++ ++ /delete-node/ power; ++ ++ reset { ++ debounce-interval = <50>; ++ gpios = <&gpio1 RK_PC6 GPIO_ACTIVE_LOW>; ++ label = "reset"; ++ linux,code = ; ++ }; ++ }; ++ ++ vdd_5v: vdd-5v { ++ compatible = "regulator-fixed"; ++ regulator-name = "vdd_5v"; ++ regulator-always-on; ++ regulator-boot-on; ++ }; ++}; ++ ++&emmc_phy { ++ status = "disabled"; ++}; ++ ++&i2c4 { ++ status = "disabled"; ++}; ++ ++&pcie0 { ++ max-link-speed = <1>; ++ num-lanes = <1>; ++ vpcie3v3-supply = <&vcc3v3_sys>; ++}; ++ ++&pinctrl { ++ gpio-leds { ++ /delete-node/ leds-gpio; ++ ++ lan_led_pin: lan-led-pin { ++ rockchip,pins = <1 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>; ++ }; ++ ++ sys_led_pin: sys-led-pin { ++ rockchip,pins = <0 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>; ++ }; ++ ++ wan_led_pin: wan-led-pin { ++ rockchip,pins = <1 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>; ++ }; ++ }; ++ ++ rockchip-key { ++ /delete-node/ power-key; ++ ++ reset_button_pin: reset-button-pin { ++ rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_up>; ++ }; ++ }; ++}; ++ ++&sdhci { ++ status = "disabled"; ++}; ++ ++&sdio0 { ++ status = "disabled"; ++}; ++ ++&u2phy0_host { ++ phy-supply = <&vdd_5v>; ++}; ++ ++&u2phy1_host { ++ status = "disabled"; ++}; ++ ++&uart0 { ++ status = "disabled"; ++}; ++ ++&usbdrd_dwc3_0 { ++ dr_mode = "host"; ++}; ++ ++&vcc3v3_sys { ++ vin-supply = <&vcc5v0_sys>; ++}; diff --git a/target/linux/rockchip/patches-5.4/008-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch b/target/linux/rockchip/patches-5.4/008-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch new file mode 100644 index 0000000000..792028b292 --- /dev/null +++ b/target/linux/rockchip/patches-5.4/008-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch @@ -0,0 +1,31 @@ +From af20b3384e8723077cc6484160b0cf4e9be321de Mon Sep 17 00:00:00 2001 +From: Tianling Shen +Date: Mon, 7 Jun 2021 15:45:37 +0800 +Subject: [PATCH] arm64: dts: rockchip: add EEPROM node for NanoPi R4S + +NanoPi R4S has a EEPROM attached to the 2nd I2C bus (U92), which +stores the MAC address. + +Signed-off-by: Tianling Shen +--- + arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts | 9 +++++++++ + 1 file changed, 9 insertions(+) + +--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts ++++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts +@@ -68,6 +68,15 @@ + status = "disabled"; + }; + ++&i2c2 { ++ eeprom@51 { ++ compatible = "microchip,24c02", "atmel,24c02"; ++ reg = <0x51>; ++ pagesize = <16>; ++ read-only; /* This holds our MAC */ ++ }; ++}; ++ + &i2c4 { + status = "disabled"; + };