[openwrt/openwrt] rkbin: add rk3588 support

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/76071a8bb0e772873ca653a37b7c352ca07d754c

commit 76071a8bb0e772873ca653a37b7c352ca07d754c
Author: Ben Whitten <ben.whitten at gmail.com>
AuthorDate: Thu Jul 13 21:41:27 2023 +0100

    rkbin: add rk3588 support
    
    Adding support for the rk3588 platform
    
    Signed-off-by: Ben Whitten <ben.whitten at gmail.com>
    Link: https://github.com/openwrt/openwrt/pull/15607
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/boot/rkbin/Makefile | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/package/boot/rkbin/Makefile b/package/boot/rkbin/Makefile
index 58098b8ea7..d895c06547 100644
--- a/package/boot/rkbin/Makefile
+++ b/package/boot/rkbin/Makefile
@@ -57,12 +57,19 @@ define Trusted-Firmware-A/rk3568-e25
   TPL:=rk35/rk3568_ddr_1560MHz_uart2_m0_115200_v1.21.bin
 endef
 
+define Trusted-Firmware-A/rk3588
+  BUILD_SUBTARGET:=armv8
+  ATF:=rk35/rk3588_bl31_v1.45.elf
+  TPL:=rk35/rk3588_ddr_lp4_2112MHz_lp5_2400MHz_v1.16.bin
+endef
+
 TFA_TARGETS:= \
 	rk3308 \
 	rk3308-rock-pi-s \
 	rk3566 \
 	rk3568 \
-	rk3568-e25
+	rk3568-e25 \
+	rk3588
 
 ifeq ($(BUILD_VARIANT),rk3308-rock-pi-s)
   TPL_FILE:=rk3308_ddr_589MHz_uart0_m0_v2.07.bin