From 8792a64d87708139bc0cf8b48d4a580a39167473 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Cl=C3=A9ment=20B=C5=93sch?= Date: Sun, 23 Jul 2017 22:14:23 +0200 Subject: [PATCH] sunxi: reduce Orange Pi Zero DRAM clock speed MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Using `fel-boot-lima-memtester-on-orange-pi-pc 672` on an Orange Pi without heatsink results in the following error after a few minutes: WRITE FAILURE: 0x00200000 != 0xffdfffff at offset 0x0137f47c (bitflip). Also, the constructor repository (github/orangepi-xunlong) seems to contain that 624 Mhz clock speed in its u-boot fork. It may be that 672 Mhz is the advertized overclocked speed. According to http://linux-sunxi.org/Orange_Pi_PC#DRAM_clock_speed_limit it may be worth decreasing that value with other Orange Pi boards. See also e7d6aa0b74b7f4d08ee68da8a586c76c761348e2. Signed-off-by: Clément Bœsch [Add s-o-b line] Signed-off-by: Jagan Teki Reviewed-by: Jagan Teki --- configs/orangepi_zero_defconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configs/orangepi_zero_defconfig b/configs/orangepi_zero_defconfig index c650ce87d9..16a3929aa5 100644 --- a/configs/orangepi_zero_defconfig +++ b/configs/orangepi_zero_defconfig @@ -2,7 +2,7 @@ CONFIG_ARM=y CONFIG_ARCH_SUNXI=y CONFIG_SPL_SPI_FLASH_SUPPORT=y CONFIG_MACH_SUN8I_H3=y -CONFIG_DRAM_CLK=672 +CONFIG_DRAM_CLK=624 CONFIG_DRAM_ZQ=3881979 CONFIG_DRAM_ODT_EN=y # CONFIG_VIDEO_DE2 is not set -- 2.25.1