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| author |  Conor Dooley <conor.dooley@microchip.com>
| 2022-07-05 22:52:04 +0100 |
|---|---|---|
| committer |  Vinod Koul <vkoul@kernel.org>
| 2022-07-06 11:15:05 +0530 |
| commit | 4ce653d7c651d6a9fc6d5db4275624ac8d856b99 (patch) | |
| tree | e7cb4626fcf7e3fd4b6a8d30d5a6d99d556946b1 /Documentation/devicetree/bindings/dma | |
| parent | dmaengine: dmatest: use strscpy to replace strlcpy (diff) | |
| download | linux-4ce653d7c651d6a9fc6d5db4275624ac8d856b99.tar.gz linux-4ce653d7c651d6a9fc6d5db4275624ac8d856b99.tar.bz2 linux-4ce653d7c651d6a9fc6d5db4275624ac8d856b99.zip | |
dt-bindings: dma: dw-axi-dmac: extend the number of interrupts
The Canaan k210 apparently has a Sysnopsys Designware AXI DMA
controller, but according to the documentation & devicetree it has 6
interrupts rather than the standard one. Support the 6 interrupt
configuration by unconditionally extending the binding to a maximum of
8 per-channel interrupts thereby matching the number of possible
channels.
Link: https://canaan-creative.com/wp-content/uploads/2020/03/kendryte_standalone_programming_guide_20190311144158_en.pdf #Page 51
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220705215213.1802496-4-mail@conchuod.ie
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/dma')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml index 4324a94b26b2..67aa7bb6d36a 100644 --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml @@ -34,7 +34,12 @@ properties: - const: axidma_apb_regs interrupts: - maxItems: 1 + description: + If the IP-core synthesis parameter DMAX_INTR_IO_TYPE is set to 1, this + will be per-channel interrupts. Otherwise, this is a single combined IRQ + for all channels. + minItems: 1 + maxItems: 8 clocks: items: |