[U-Boot] [PATCH] sunxi: lower the DDR frequency of Orange Pi Prime

[Icenowy Zheng]

When I use Orange Pi Prime to do some heavy compliation tasks, the gcc
compiler sometimes mysteriously segfaults, and memtester catches memory
error. As the lima-memtester cannot support H5 (Mali-450 GPU equipped),
there's no really reliable way to detect DRAM stability except try and
error.

Lower the DDR frequency to 624MHz seems to solved the issue.

Set the default frequency to 624MHz in the defconfig, as 672MHz is
observed to be unstable at least on my board.

Signed-off-by: Icenowy Zheng <icenowy at aosc.io>
---
 configs/orangepi_prime_defconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configs/orangepi_prime_defconfig b/configs/orangepi_prime_defconfig
index 3d87374002..88eaf12741 100644
--- a/configs/orangepi_prime_defconfig
+++ b/configs/orangepi_prime_defconfig
@@ -1,7 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_SUNXI=y
 CONFIG_MACH_SUN50I_H5=y
-CONFIG_DRAM_CLK=672
+CONFIG_DRAM_CLK=624
 CONFIG_DRAM_ZQ=3881977
 CONFIG_DEFAULT_DEVICE_TREE="sun50i-h5-orangepi-prime"
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
-- 
2.13.6