Add dma-channels property, then we can determine how many channels there
by device tree, rather than statically defines it in PDMA driver
Signed-off-by: Zong Li <zong.li@xxxxxxxxxx>
---
.../devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
index d32a71b975fe..256bcb111d57 100644
--- a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
+++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
@@ -34,12 +34,17 @@ properties:
minItems: 1
maxItems: 8
+ dma-channels:
+ minimum: 1
+ maximum: 4
+
'#dma-cells':
const: 1
required:
- compatible
- reg
+ - dma-channels
- interrupts
- '#dma-cells'
@@ -50,6 +55,7 @@ examples:
dma@3000000 {
compatible = "sifive,fu540-c000-pdma";
reg = <0x3000000 0x8000>;
+ dma-channels = <4>;
interrupts = <23 24 25 26 27 28 29 30>;
#dma-cells = <1>;
};
--
2.31.1
