On Mon, Oct 5, 2020 at 12:17 PM Phil Chang <phil.chang@xxxxxxxxxxxx> wrote: > > Hi Chun-Kuang Please don't top post to the lists. > Sorry for typo. In fact, the dts of new SoC is not upstream yet. I'm so > sorry for couldn't show the detail now. Don't have to have the dts upstream. Can you point to a downstream dts or post a snippet of the reserved memory? > How about the configurable MAX_RESERVED_REGIONS size like this patch? > https://patchwork.kernel.org/patch/10692101/ No, as I already said in that patch. But glad you found what's needed to make it dynamic. But even for dynamic, I want to understand the use. Rob > > > On Sun, 2020-10-04 at 21:05 +0800, Chun-Kuang Hu wrote: > > 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 > > > _______________________________________________ > > > Linux-mediatek mailing list > > > Linux-mediatek@xxxxxxxxxxxxxxxxxxx > > > http://lists.infradead.org/mailman/listinfo/linux-mediatek >
