Some dma channels can be reserved for secure mode or other
hardware on the SoC, so provide a binding for a bitmask
listing the available channels for the kernel to use.
Cc: Vinod Koul <vk...@kernel.org>
Cc: Rob Herring <robh...@kernel.org>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Tanglei Han <hantang...@huawei.com>
Cc: Zhuangluan Su <suzhuangl...@hisilicon.com>
Cc: Ryan Grachek <r...@edited.us>
Cc: Manivannan Sadhasivam <manivannan.sadhasi...@linaro.org>
Cc: dmaeng...@vger.kernel.org
Cc: devicet...@vger.kernel.org
Signed-off-by: John Stultz <john.stu...@linaro.org>
---
Documentation/devicetree/bindings/dma/k3dma.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/k3dma.txt
b/Documentation/devicetree/bindings/dma/k3dma.txt
index 10a2f15..1c466c1 100644
--- a/Documentation/devicetree/bindings/dma/k3dma.txt
+++ b/Documentation/devicetree/bindings/dma/k3dma.txt
@@ -14,6 +14,9 @@ Required properties:
have specific request line
- clocks: clock required
+Optional properties:
+- dma-avail-chan: Bitmask of available physical channels
+
Example:
Controller:
--
2.7.4
