[PATCH 1/2] rockchip: sdram: Allow the first bank to extend beyond 4 GiB

[Kever Yang]

On 2025/1/24 06:02, Jonas Karlman wrote:
> Allow the first bank to extend beyond 4 GiB when the blob of space for
> peripheral is located before start of DRAM, e.g. when start of DRAM
> is 0x40000000 and continue beyond the 4 GiB mark.
>
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>   arch/arm/mach-rockchip/sdram.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/mach-rockchip/sdram.c b/arch/arm/mach-rockchip/sdram.c
> index 7c21ae8efc44..3d3fc327234f 100644
> --- a/arch/arm/mach-rockchip/sdram.c
> +++ b/arch/arm/mach-rockchip/sdram.c
> @@ -310,6 +310,8 @@ int dram_init_banksize(void)
>   	if (ram_top > SZ_4G && top < SZ_4G) {
>   		gd->bd->bi_dram[1].start = SZ_4G;
>   		gd->bd->bi_dram[1].size = ram_top - gd->bd->bi_dram[1].start;
> +	} else if (ram_top > SZ_4G && top == SZ_4G) {
> +		gd->bd->bi_dram[0].size = ram_top - gd->bd->bi_dram[0].start;
>   	}
>   #else
>   #ifdef CONFIG_SPL_OPTEE_IMAGE