[U-Boot] Patch for OLinuXino Lime boards: default DRAM settings

[Hans de Goede]

Hi,

On 30-09-16 07:19, Josh Marshall wrote:
> We have a number of OlinuXino Lime2 boards (both NAND and eMMC versions)
> which were experiencing sporadic hangs. After testing with some heavy
> benchmarking and help from the Armbian forum, it was pinned down as the
> DRAM settings for the board. The default is 480MHz, but this is unstable,
> and even the build instructions from the vendor Olimex themselves say to
> set the DRAM clock to 384. (See line 96 at:
> https://github.com/OLIMEX/OLINUXINO/blob/master/SOFTWARE/A20/A20-build-3.4.103-release-2/BUILD_DESCRIPTION_A20_Olimex_kernel_3.4.103%2B_Jessie_rel_2.txt
> )
>
> I’ve attached a patch against master to change this default:

Thank you for the patch. I've applied this patch to my local
tree and it will be part of the pull-request I'm about to send
out.

Regards,

Hans


>
> diff --git a/configs/A20-OLinuXino-Lime2_defconfig
> b/configs/A20-OLinuXino-Lime2_defconfig
> index 54343de..21c792a 100644
> --- a/configs/A20-OLinuXino-Lime2_defconfig
> +++ b/configs/A20-OLinuXino-Lime2_defconfig
> @@ -2,7 +2,7 @@ CONFIG_ARM=y
>  CONFIG_ARCH_SUNXI=y
>  CONFIG_SPL_I2C_SUPPORT=y
>  CONFIG_MACH_SUN7I=y
> -CONFIG_DRAM_CLK=480
> +CONFIG_DRAM_CLK=384
>  CONFIG_MMC0_CD_PIN="PH1"
>  CONFIG_USB0_VBUS_PIN="PC17"
>  CONFIG_USB0_VBUS_DET="PH5"
> diff --git a/configs/A20-OLinuXino-Lime_defconfig
> b/configs/A20-OLinuXino-Lime_defconfig
> index c4f6e1a..024dc2d 100644
> --- a/configs/A20-OLinuXino-Lime_defconfig
> +++ b/configs/A20-OLinuXino-Lime_defconfig
> @@ -2,7 +2,7 @@ CONFIG_ARM=y
>  CONFIG_ARCH_SUNXI=y
>  CONFIG_SPL_I2C_SUPPORT=y
>  CONFIG_MACH_SUN7I=y
> -CONFIG_DRAM_CLK=480
> +CONFIG_DRAM_CLK=384
>  CONFIG_MMC0_CD_PIN="PH1"
>  CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-olinuxino-lime"
>  # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
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