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uboot-rockchip: add FriendlyARM NanoPC T4 support

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Add support for the FriendlyARM NanoPC T4.
Reduce memory frequency to avoid random crash.

Signed-off-by: Lu jicong <jiconglu58@gmail.com>
This commit is contained in:
Lu jicong 2023-07-24 15:22:42 +08:00 committed by Hauke Mehrtens
parent 4395236a10
commit 7b40344ed6
2 changed files with 32 additions and 0 deletions
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8
package/boot/uboot-rockchip/Makefile
View File

@ -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 \

24
package/boot/uboot-rockchip/patches/105-nanopc-t4-fix-memory-unstability.patch Normal file
View File

@ -0,0 +1,24 @@
From 445502bc21ecf1b5120faee785cea578b810c759 Mon Sep 17 00:00:00 2001
From: Lu jicong <jiconglu58@gmail.com>
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 <jiconglu58@gmail.com>
---
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"