2017-07-28 06:41:28

by Tao Huang

Subject: [PATCH] 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 <[email protected]>
---
arch/arm/mach-rockchip/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 9ad84cd01ba0..fafd3d7f9f8c 100644
--- 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.
--
2.7.4

2017-07-31 22:58:50

by Heiko Stuebner

Subject: Re: [PATCH] ARM: rockchip: enable ZONE_DMA for non 64-bit capable peripherals

Am Freitag, 28. Juli 2017, 14:40:02 CEST schrieb Tao Huang:
> 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 <[email protected]>

applied for 4.14


Thanks
Heiko