| Message ID | 5db314b798cd9cfcb5cb61bc56515220b7d50315.1642151791.git.zong.li@sifive.com |
|---|---|
| State | New |
| Headers | show |
| Series | Determine the number of DMA channels by 'dma-channels' property | expand |
diff --git a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml index d32a71b975fe..3dbb8caefc17 100644 --- a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml +++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml @@ -34,6 +34,12 @@ properties: minItems: 1 maxItems: 8 + dma-channels: + description: For backwards-compatible, the default value is 4 + minimum: 1 + maximum: 4 + default: 4 + '#dma-cells': const: 1 @@ -50,6 +56,7 @@ 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>; };
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@sifive.com> --- .../devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml | 7 +++++++ 1 file changed, 7 insertions(+)