ARM: rockchip: enable ZONE_DMA for non 64-bit capable peripherals

Most IP cores on ARM Rockchip platforms can only address 32 bits of
physical memory for DMA. Thus ZONE_DMA should be enabled when LPAE
is activated.

Signed-off-by: Tao Huang <huangtao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 9ad84cd..fafd3d7 100644 (file)
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -16,6 +16,7 @@ config ARCH_ROCKCHIP
        select ROCKCHIP_TIMER
        select ARM_GLOBAL_TIMER
        select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
+       select ZONE_DMA if ARM_LPAE
        help
          Support for Rockchip's Cortex-A9 Single-to-Quad-Core-SoCs
          containing the RK2928, RK30xx and RK31xx series.