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-rw-r--r--target/linux/rockchip/Makefile2
-rw-r--r--target/linux/rockchip/armv8/base-files/etc/board.d/01_leds4
-rw-r--r--target/linux/rockchip/armv8/base-files/etc/board.d/02_network7
-rw-r--r--target/linux/rockchip/armv8/base-files/etc/hotplug.d/net/40-net-smp-affinity4
-rw-r--r--target/linux/rockchip/armv8/config-5.101
-rw-r--r--target/linux/rockchip/armv8/config-5.41
-rw-r--r--target/linux/rockchip/image/armv8.mk11
-rw-r--r--target/linux/rockchip/image/nanopi-r4s.bootscript8
-rw-r--r--target/linux/rockchip/patches-5.10/004-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch177
-rw-r--r--target/linux/rockchip/patches-5.10/005-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch31
-rw-r--r--target/linux/rockchip/patches-5.4/007-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch177
-rw-r--r--target/linux/rockchip/patches-5.4/008-arm64-dts-rockchip-add-EEPROM-node-for-NanoPi-R4S.patch31
12 files changed, 452 insertions, 2 deletions
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} - ${fdt_addr_r}
diff --git a/target/linux/rockchip/patches-5.10/004-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch b/target/linux/rockchip/patches-5.10/004-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch
new file mode 100644
index 0000000000..461a5ae7dd
--- /dev/null
+++ b/target/linux/rockchip/patches-5.10/004-v5.13-rockchip-rk3399-Add-support-for-FriendlyARM-NanoPi-R.patch
@@ -0,0 +1,177 @@
+From db792e9adbf85ffc9d6b0b060ac3c8e3148c8992 Mon Sep 17 00:00:00 2001
+From: Tianling Shen <cnsztl@gmail.com>
+Date: Fri, 19 Mar 2021 13:16:27 +0800
+Subject: [PATCH] rockchip: rk3399: Add support for FriendlyARM NanoPi R4S
+
+This adds support for the NanoPi R4S from FriendlyArm.
+
+Rockchip RK3399 SoC
+1GB DDR3 or 4GB LPDDR4 RAM
+Gigabit Ethernet (WAN)
+Gigabit Ethernet (PCIe) (LAN)
+USB 3.0 Port x 2
+MicroSD slot
+Reset button
+WAN - LAN - SYS LED
+
+Co-developed-by: Jensen Huang <jensenhuang@friendlyarm.com>
+Signed-off-by: Jensen Huang <jensenhuang@friendlyarm.com>
+[minor adjustments]
+Co-developed-by: Marty Jones <mj8263788@gmail.com>
+Signed-off-by: Marty Jones <mj8263788@gmail.com>
+[further adjustments, fixed format issues]
+Signed-off-by: Tianling Shen <cnsztl@gmail.com>
+Link: https://lore.kernel.org/r/20210319051627.814-2-cnsztl@gmail.com
+Signed-off-by: Heiko Stuebner <heiko@sntech.de>
+---
+ arch/arm64/boot/dts/rockchip/Makefile | 1 +
+ .../boot/dts/rockchip/rk3399-nanopi-r4s.dts | 133 +++++++++++++++++++++
+ 2 files changed, 134 insertions(+)
+ create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
+
+--- a/arch/arm64/boot/dts/rockchip/Makefile
++++ b/arch/arm64/boot/dts/rockchip/Makefile
+@@ -30,6 +30,7 @@ dtb-$(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 <jensenhuang@friendlyarm.com>
++ * Copyright (c) 2020 Marty Jones <mj8263788@gmail.com>
++ * Copyright (c) 2021 Tianling Shen <cnsztl@gmail.com>
++ */
++
++/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 = <KEY_RESTART>;
++ };
++ };
++
++ 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 <cnsztl@gmail.com>
+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 <cnsztl@gmail.com>
+---
+ 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 <cnsztl@gmail.com>
+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 <jensenhuang@friendlyarm.com>
+Signed-off-by: Jensen Huang <jensenhuang@friendlyarm.com>
+[minor adjustments]
+Co-developed-by: Marty Jones <mj8263788@gmail.com>
+Signed-off-by: Marty Jones <mj8263788@gmail.com>
+[further adjustments, fixed format issues]
+Signed-off-by: Tianling Shen <cnsztl@gmail.com>
+Link: https://lore.kernel.org/r/20210319051627.814-2-cnsztl@gmail.com
+Signed-off-by: Heiko Stuebner <heiko@sntech.de>
+---
+ 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 <jensenhuang@friendlyarm.com>
++ * Copyright (c) 2020 Marty Jones <mj8263788@gmail.com>
++ * Copyright (c) 2021 Tianling Shen <cnsztl@gmail.com>
++ */
++
++/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 = <KEY_RESTART>;
++ };
++ };
++
++ 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 <cnsztl@gmail.com>
+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 <cnsztl@gmail.com>
+---
+ 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";
+ };