[PATCH] rockchip: rk3399: nanopc-t4: use 1600MHz sdram config

[Kever Yang]

Hi Lu jicong,

     Does the 1866M worked for your board before?

     I think this config should be fine for other people, it has been 
submit for 4 years.


Thanks,

- Kever

On 2023/7/5 21:58, Lu jicong wrote:
> 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 at 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"