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| author | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2013-11-23 16:58:03 -0500 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2013-12-16 16:03:36 -0500 |
| commit | df595a9d70fc3d1f4435b4a643bfaab9913c0ebd (patch) | |
| tree | 8f9570876b45f49553935f95dcb38a439b9f1094 | |
| parent | 89b3feefa2e0ca2ba09e637a8a23838e9561c3a2 (diff) | |
| download | blackbird-op-linux-df595a9d70fc3d1f4435b4a643bfaab9913c0ebd.tar.gz blackbird-op-linux-df595a9d70fc3d1f4435b4a643bfaab9913c0ebd.zip | |
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>
| -rw-r--r-- | arch/arm/mach-keystone/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-keystone/keystone.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-keystone/Kconfig b/arch/arm/mach-keystone/Kconfig index 8a9e943a3240..dabc5eee52e7 100644 --- a/arch/arm/mach-keystone/Kconfig +++ b/arch/arm/mach-keystone/Kconfig @@ -12,6 +12,7 @@ config ARCH_KEYSTONE select COMMON_CLK_KEYSTONE select TI_EDMA select ARCH_SUPPORTS_BIG_ENDIAN + select ZONE_DMA if ARM_LPAE help Support for boards based on the Texas Instruments Keystone family of SoCs. diff --git a/arch/arm/mach-keystone/keystone.c b/arch/arm/mach-keystone/keystone.c index b661c5c2870a..2fe4dd04996c 100644 --- a/arch/arm/mach-keystone/keystone.c +++ b/arch/arm/mach-keystone/keystone.c @@ -68,6 +68,9 @@ void keystone_restart(enum reboot_mode mode, const char *cmd) } 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), .init_machine = keystone_init, .dt_compat = keystone_match, |
