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| author | Icenowy Zheng <icenowy@aosc.xyz> | 2017-08-29 12:51:27 +0800 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-09-05 09:07:20 +0530 |
| commit | a702e47eab32c643054c5055cf5ce320d59f4dee (patch) | |
| tree | 2dee52c7cd203e940bfad277dc25e61c80bad1a4 | |
| parent | 0430a7c753744af746679a96026916b50908aafa (diff) | |
| download | linux-a702e47eab32c643054c5055cf5ce320d59f4dee.tar.gz linux-a702e47eab32c643054c5055cf5ce320d59f4dee.tar.xz | |
dmaengine: sun6i: support V3s SoC variant
Allwinner V3s has a DMA engine similar to the ones from A31, but with
fewer channels and DRQs.
Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | Documentation/devicetree/bindings/dma/sun6i-dma.txt | 1 | ||||
| -rw-r--r-- | drivers/dma/sun6i-dma.c | 13 |
2 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/sun6i-dma.txt b/Documentation/devicetree/bindings/dma/sun6i-dma.txt index 6b267045f522..98fbe1a5c6dd 100644 --- a/Documentation/devicetree/bindings/dma/sun6i-dma.txt +++ b/Documentation/devicetree/bindings/dma/sun6i-dma.txt @@ -9,6 +9,7 @@ Required properties: "allwinner,sun8i-a23-dma" "allwinner,sun8i-a83t-dma" "allwinner,sun8i-h3-dma" + "allwinner,sun8i-v3s-dma" - reg: Should contain the registers base address and length - interrupts: Should contain a reference to the interrupt used by this device - clocks: Should contain a reference to the parent AHB clock diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index 252b59c1d1d5..bcd496edc70f 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -1040,11 +1040,24 @@ static struct sun6i_dma_config sun8i_h3_dma_cfg = { .nr_max_vchans = 34, }; +/* + * The V3s have only 8 physical channels, a maximum DRQ port id of 23, + * and a total of 24 usable source and destination endpoints. + */ + +static struct sun6i_dma_config sun8i_v3s_dma_cfg = { + .nr_max_channels = 8, + .nr_max_requests = 23, + .nr_max_vchans = 24, + .gate_needed = true, +}; + static const struct of_device_id sun6i_dma_match[] = { { .compatible = "allwinner,sun6i-a31-dma", .data = &sun6i_a31_dma_cfg }, { .compatible = "allwinner,sun8i-a23-dma", .data = &sun8i_a23_dma_cfg }, { .compatible = "allwinner,sun8i-a83t-dma", .data = &sun8i_a83t_dma_cfg }, { .compatible = "allwinner,sun8i-h3-dma", .data = &sun8i_h3_dma_cfg }, + { .compatible = "allwinner,sun8i-v3s-dma", .data = &sun8i_v3s_dma_cfg }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sun6i_dma_match); |