From 7b40344ed6aba536004c9cf18efcfaf36d9a9f55 Mon Sep 17 00:00:00 2001 From: Lu jicong Date: Mon, 24 Jul 2023 15:22:42 +0800 Subject: [PATCH] uboot-rockchip: add FriendlyARM NanoPC T4 support Add support for the FriendlyARM NanoPC T4. Reduce memory frequency to avoid random crash. Signed-off-by: Lu jicong --- package/boot/uboot-rockchip/Makefile | 8 +++++++ ...105-nanopc-t4-fix-memory-unstability.patch | 24 +++++++++++++++++++ 2 files changed, 32 insertions(+) create mode 100644 package/boot/uboot-rockchip/patches/105-nanopc-t4-fix-memory-unstability.patch diff --git a/package/boot/uboot-rockchip/Makefile b/package/boot/uboot-rockchip/Makefile index 983edcb24092..2d44c218f249 100644 --- a/package/boot/uboot-rockchip/Makefile +++ b/package/boot/uboot-rockchip/Makefile @@ -74,6 +74,13 @@ define U-Boot/rk3399/Default ATF:=rk3399_bl31.elf endef +define U-Boot/nanopc-t4-rk3399 + $(U-Boot/rk3399/Default) + NAME:=NanoPC T4 + BUILD_DEVICES:= \ + friendlyarm_nanopc-t4 +endef + define U-Boot/nanopi-r4s-rk3399 $(U-Boot/rk3399/Default) NAME:=NanoPi R4S @@ -96,6 +103,7 @@ define U-Boot/rockpro64-rk3399 endef UBOOT_TARGETS := \ + nanopc-t4-rk3399 \ nanopi-r4s-rk3399 \ rock-pi-4-rk3399 \ rockpro64-rk3399 \ diff --git a/package/boot/uboot-rockchip/patches/105-nanopc-t4-fix-memory-unstability.patch b/package/boot/uboot-rockchip/patches/105-nanopc-t4-fix-memory-unstability.patch new file mode 100644 index 000000000000..7d2161ae4223 --- /dev/null +++ b/package/boot/uboot-rockchip/patches/105-nanopc-t4-fix-memory-unstability.patch @@ -0,0 +1,24 @@ +From 445502bc21ecf1b5120faee785cea578b810c759 Mon Sep 17 00:00:00 2001 +From: Lu jicong +Date: Wed, 5 Jul 2023 17:13:55 +0800 +Subject: [PATCH] rockchip: rk3399: nanopc-t4: use 1600MHz sdram config + +Current 1866MHz sdram config is too high for NanoPC-T4. +On this frequency, its lpddr3 sdram becomes unstable, +causing memtest failures and random kernel crashes. + +Signed-off-by: Lu jicong +--- + arch/arm/dts/rk3399-nanopc-t4-u-boot.dtsi | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/arch/arm/dts/rk3399-nanopc-t4-u-boot.dtsi b/arch/arm/dts/rk3399-nanopc-t4-u-boot.dtsi +index 17201bcf41..8b6c9059ab 100644 +--- a/arch/arm/dts/rk3399-nanopc-t4-u-boot.dtsi ++++ b/arch/arm/dts/rk3399-nanopc-t4-u-boot.dtsi +@@ -4,4 +4,4 @@ + */ + + #include "rk3399-nanopi4-u-boot.dtsi" +-#include "rk3399-sdram-lpddr3-samsung-4GB-1866.dtsi" ++#include "rk3399-sdram-lpddr3-4GB-1600.dtsi" -- 2.30.2