[PATCH v3 3/3] rockchip: rk3308: Implement checkboard() to print SoC variant

[Kever Yang]

On 2024/11/10 08:56, Jonas Karlman wrote:
> Implement checkboard() to print current SoC variant used by a board,
> e.g. one of:
>
>    SoC:   RK3308
>    SoC:   RK3308B
>    SoC:   RK3308B-S
>
> when U-Boot proper is running.
>
>    U-Boot 2025.01-rc1 (Nov 02 2024 - 20:26:25 +0000)
>
>    Model: Radxa ROCK Pi S
>    SoC:   RK3308B
>    DRAM:  512 MiB (effective 510 MiB)
>
> Information about the SoC variant is read from GRF.
>
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
> v3: No change
> v2: New patch
> ---
>   arch/arm/mach-rockchip/rk3308/rk3308.c | 16 ++++++++++++++++
>   1 file changed, 16 insertions(+)
>
> diff --git a/arch/arm/mach-rockchip/rk3308/rk3308.c b/arch/arm/mach-rockchip/rk3308/rk3308.c
> index c6b1a35f47e6..03d97e1d7460 100644
> --- a/arch/arm/mach-rockchip/rk3308/rk3308.c
> +++ b/arch/arm/mach-rockchip/rk3308/rk3308.c
> @@ -216,3 +216,19 @@ int arch_cpu_init(void)
>   	return 0;
>   }
>   #endif
> +
> +#define RK3308_GRF_CHIP_ID	0xFF000800
> +
> +int checkboard(void)
> +{
> +	u32 chip_id = readl(RK3308_GRF_CHIP_ID);
> +
> +	if (chip_id == 0x3308)
> +		printf("SoC:   RK3308B\n");
> +	else if (chip_id == 0x3308c)
> +		printf("SoC:   RK3308B-S\n");
> +	else
> +		printf("SoC:   RK3308\n");
> +
> +	return 0;
> +}