rockchip: NR_DRAM_BANKS now defaults to 10 when Rockchip TPL blob is used

When Rockchip TPL blob is used, the memory areas that can be used for
DRAM is gotten from ATAGS passed through the DRAM at a specific address.

The DDR_MEM tag contains at most 10 areas, so we should default to 10 if
Rockchip TPL blob is used. Note that it is technically possible we need
more if one of those 10 areas overlaps with reserved memory area,
forcing us to split it in two. But a default doesn't need to handle all
cases, only most.

Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 83779bd462085806f8c741c7b57d23b8487fb6d7..67d3b28d058f4435deb7748073e6fb5ccec962c0 100644 (file)
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -592,6 +592,9 @@ config ROCKCHIP_COMMON_STACK_ADDR
        imply TPL_SYS_MALLOC_F if TPL
        imply TPL_SYS_MALLOC_SIMPLE if TPL
 
+config NR_DRAM_BANKS
+       default 10 if ROCKCHIP_EXTERNAL_TPL
+
 source "arch/arm/mach-rockchip/px30/Kconfig"
 source "arch/arm/mach-rockchip/rk3036/Kconfig"
 source "arch/arm/mach-rockchip/rk3066/Kconfig"