dmaengine: sirf: enable generic dt binding for dma channels

move to support of_dma_request_slave_channel() and dma_request_slave_channel.
we add a xlate() to let dma clients be able to find right dma_chan by generic
"dmas" properties in dts.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/atlas6.dtsi b/arch/arm/boot/dts/atlas6.dtsi
index f8674bcc4489..ec23b5c86fb7 100644
--- a/arch/arm/boot/dts/atlas6.dtsi
+++ b/arch/arm/boot/dts/atlas6.dtsi
@@ -269,6 +269,7 @@
                                 reg = <0xb00b0000 0x10000>;
                                 interrupts = <12>;
                                 clocks = <&clks 24>;
+                                #dma-cells = <1>;
                         };
 
                         dmac1: dma-controller@b0160000 {
@@ -277,6 +278,7 @@
                                 reg = <0xb0160000 0x10000>;
                                 interrupts = <13>;
                                 clocks = <&clks 25>;
+                                #dma-cells = <1>;
                         };
 
                         vip@b00C0000 {
diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi
index 0e219932d7cc..3a15dee2e8ab 100644
--- a/arch/arm/boot/dts/prima2.dtsi
+++ b/arch/arm/boot/dts/prima2.dtsi
@@ -286,6 +286,7 @@
                                 reg = <0xb00b0000 0x10000>;
                                 interrupts = <12>;
                                 clocks = <&clks 24>;
+                                #dma-cells = <1>;
                         };
 
                         dmac1: dma-controller@b0160000 {
@@ -294,6 +295,7 @@
                                 reg = <0xb0160000 0x10000>;
                                 interrupts = <13>;
                                 clocks = <&clks 25>;
+                                #dma-cells = <1>;
                         };
 
                         vip@b00C0000 {