DMAENGINE: ste_dma40: support older silicon

This makes sure the DMA40 driver will also work on the oldest
silicon revisions that have the on-chip memory on another location
in the DB8500 and also requires explicit suspend before starting
or resuming a logical channel.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
[added parenthesis to the definition of U8500_DMA_LCPA_BASE_ED]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c
index e2b7c31ef372..c62cdbee3bd9 100644
--- a/arch/arm/mach-ux500/devices-db8500.c
+++ b/arch/arm/mach-ux500/devices-db8500.c
@@ -213,4 +213,6 @@ void dma40_u8500ed_fixup(void)
         dma40_plat_data.memcpy_len = 0;
         dma40_resources[0].start = U8500_DMA_BASE_ED;
         dma40_resources[0].end = U8500_DMA_BASE_ED + SZ_4K - 1;
+        dma40_resources[1].start = U8500_DMA_LCPA_BASE_ED;
+        dma40_resources[1].end = U8500_DMA_LCPA_BASE_ED + 2 * SZ_1K - 1;
 }
diff --git a/arch/arm/mach-ux500/include/mach/db8500-regs.h b/arch/arm/mach-ux500/include/mach/db8500-regs.h
index 897fa35078ef..f000218210c9 100644
--- a/arch/arm/mach-ux500/include/mach/db8500-regs.h
+++ b/arch/arm/mach-ux500/include/mach/db8500-regs.h
@@ -17,6 +17,7 @@
 #define U8500_ESRAM_BANK4       (U8500_ESRAM_BANK3 + U8500_ESRAM_BANK_SIZE)
 /* Use bank 4 for DMA LCPA */
 #define U8500_DMA_LCPA_BASE     U8500_ESRAM_BANK4
+#define U8500_DMA_LCPA_BASE_ED  (U8500_ESRAM_BANK4 + 0x4000)
 
 #define U8500_PER3_BASE         0x80000000
 #define U8500_STM_BASE          0x80100000