dmaengine: bcm2835: Add BCM2712 support

BCM2712 has 6 40-bit channels - DMA6 to DMA11. Add a new compatible
string to indicate that the current platform is BCM2712.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>

diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index c6fb0ed..29bcbe1 100644 (file)
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -331,6 +331,12 @@ static const struct bcm2835_dma_cfg_data bcm2711_dma_cfg = {
        .dma_mask = DMA_BIT_MASK(36),
 };
 
+static const struct bcm2835_dma_cfg_data bcm2712_dma_cfg = {
+       .chan_40bit_mask = BIT(6) | BIT(7) | BIT(8) | BIT(9) |
+                                BIT(10) | BIT(11),
+       .dma_mask = DMA_BIT_MASK(40),
+};
+
 static inline size_t bcm2835_dma_max_frame_length(struct bcm2835_chan *c)
 {
        /* lite and normal channels have different max frame length */
@@ -1260,6 +1266,7 @@ EXPORT_SYMBOL(bcm2711_dma40_memcpy);
 static const struct of_device_id bcm2835_dma_of_match[] = {
        { .compatible = "brcm,bcm2835-dma", .data = &bcm2835_dma_cfg },
        { .compatible = "brcm,bcm2711-dma", .data = &bcm2711_dma_cfg },
+       { .compatible = "brcm,bcm2712-dma", .data = &bcm2712_dma_cfg },
        {},
 };
 MODULE_DEVICE_TABLE(of, bcm2835_dma_of_match);