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ARM: keystone: enable DMA zone for LPAE 

Keystone II peripheral devices support 32-bit DMA and hence can access only
first 2GB of the memory address space. So set the platform dma_zone_size
to handle that case.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Santosh Shilimkar 2013-11-23 16:58:03 -05:00
parent 89b3feefa2
commit df595a9d70
2 changed files with 4 additions and 0 deletions
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1
arch/arm/mach-keystone/Kconfig
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@ -12,6 +12,7 @@ config ARCH_KEYSTONE
select COMMON_CLK_KEYSTONE select COMMON_CLK_KEYSTONE
select TI_EDMA select TI_EDMA
select ARCH_SUPPORTS_BIG_ENDIAN select ARCH_SUPPORTS_BIG_ENDIAN
select ZONE_DMA if ARM_LPAE
help help
Support for boards based on the Texas Instruments Keystone family of Support for boards based on the Texas Instruments Keystone family of
SoCs. SoCs.

3
arch/arm/mach-keystone/keystone.c
View File

@ -68,6 +68,9 @@ void keystone_restart(enum reboot_mode mode, const char *cmd)
} }
DT_MACHINE_START(KEYSTONE, "Keystone") DT_MACHINE_START(KEYSTONE, "Keystone")
#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
.dma_zone_size = SZ_2G,
#endif
.smp = smp_ops(keystone_smp_ops), .smp = smp_ops(keystone_smp_ops),
.init_machine = keystone_init, .init_machine = keystone_init,
.dt_compat = keystone_match, .dt_compat = keystone_match,