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dmaengine: sun6i: Add support for Allwinner H3 (sun8i) variant

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The H3 SoC has the same dma engine as the A31 (sun6i), with a
reduced amount of endpoints and physical channels. Add the proper
config data and compatible string to support it.

Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Jens Kuske 2015-05-06 11:31:31 +02:00 committed by Vinod Koul
parent 385f83f85c
commit f008db8c00
2 changed files with 16 additions and 1 deletions
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5
Documentation/devicetree/bindings/dma/sun6i-dma.txt
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@ -4,7 +4,10 @@ This driver follows the generic DMA bindings defined in dma.txt.
Required properties:
- compatible: Must be "allwinner,sun6i-a31-dma" or "allwinner,sun8i-a23-dma"
- compatible: Must be one of
"allwinner,sun6i-a31-dma"
"allwinner,sun8i-a23-dma"
"allwinner,sun8i-h3-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

12
drivers/dma/sun6i-dma.c
View File

@ -891,9 +891,21 @@ static struct sun6i_dma_config sun8i_a23_dma_cfg = {
.nr_max_vchans = 37,
};
/*
* The H3 has 12 physical channels, a maximum DRQ port id of 27,
* and a total of 34 usable source and destination endpoints.
*/
static struct sun6i_dma_config sun8i_h3_dma_cfg = {
.nr_max_channels = 12,
.nr_max_requests = 27,
.nr_max_vchans = 34,
};
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-h3-dma", .data = &sun8i_h3_dma_cfg },
{ /* sentinel */ }
};