Re: [PATCH] [PATCH] of_reserved_mem: Increase the number of reserved regions

[Chun-Kuang Hu]

Hi, Phil:

Phil Chang <phil.chang@xxxxxxxxxxxx> 於 2020年10月4日 週日 下午1:51寫道：
>
> Certain SoCs need to support large amount of reserved memory
> regions, especially to follow the GKI rules from Google.
> In MTK new SoC requires more than 68 regions of reserved memory
> for each IP's usage, such as load firmware to specific sapce,

space

> so that need to reserve more regisions

regions.

I guess this requirement is from Mediatek SoC, but I find below device
tree and just find one reserved memory region,

arch/arm64/boot/dts/mediatek/mt7622.dtsi
arch/arm64/boot/dts/mediatek/mt8173.dtsi
arch/arm64/boot/dts/mediatek/mt8516.dtsi

Could you show me the 68 regions?

Regards,
Chun-Kuang.

>
> Signed-off-by: Joe Liu <joe.liu@xxxxxxxxxxxx>
> Signed-off-by: YJ Chiang <yj.chiang@xxxxxxxxxxxx>
> Signed-off-by: Alix Wu <alix.wu@xxxxxxxxxxxx>
> Signed-off-by: Phil Chang <phil.chang@xxxxxxxxxxxx>
> ---
>  drivers/of/of_reserved_mem.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
> index 46b9371c8a33..595f0741dcef 100644
> --- a/drivers/of/of_reserved_mem.c
> +++ b/drivers/of/of_reserved_mem.c
> @@ -22,7 +22,7 @@
>  #include <linux/slab.h>
>  #include <linux/memblock.h>
>
> -#define MAX_RESERVED_REGIONS   64
> +#define MAX_RESERVED_REGIONS   128
>  static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS];
>  static int reserved_mem_count;
>
> --
> 2.18.0
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