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Commit a702e47e authored by Icenowy Zheng's avatar Icenowy Zheng Committed by Vinod Koul
Browse files

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: default avatarIcenowy Zheng <icenowy@aosc.xyz>
Acked-by: default avatarChen-Yu Tsai <wens@csie.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 0430a7c7

Documentation/devicetree/bindings/dma/sun6i-dma.txt

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/dma/sun6i-dma.c

+13 −0
Original line number Diff line number Diff line
@@ -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);