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37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
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From 87c5545f9a66984894384da5f8c2eeb60983732a Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Wed, 8 Mar 2023 16:53:38 +0000
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Subject: [PATCH] dmaengine: bcm2835: Add BCM2712 support
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BCM2712 has 6 40-bit channels - DMA6 to DMA11. Add a new compatible
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string to indicate that the current platform is BCM2712.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/dma/bcm2835-dma.c | 7 +++++++
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1 file changed, 7 insertions(+)
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--- a/drivers/dma/bcm2835-dma.c
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+++ b/drivers/dma/bcm2835-dma.c
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@@ -331,6 +331,12 @@ static const struct bcm2835_dma_cfg_data
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.dma_mask = DMA_BIT_MASK(36),
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};
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+static const struct bcm2835_dma_cfg_data bcm2712_dma_cfg = {
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+ .chan_40bit_mask = BIT(6) | BIT(7) | BIT(8) | BIT(9) |
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+ BIT(10) | BIT(11),
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+ .dma_mask = DMA_BIT_MASK(40),
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+};
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+
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static inline size_t bcm2835_dma_max_frame_length(struct bcm2835_chan *c)
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{
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/* lite and normal channels have different max frame length */
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@@ -1260,6 +1266,7 @@ EXPORT_SYMBOL(bcm2711_dma40_memcpy);
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static const struct of_device_id bcm2835_dma_of_match[] = {
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{ .compatible = "brcm,bcm2835-dma", .data = &bcm2835_dma_cfg },
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{ .compatible = "brcm,bcm2711-dma", .data = &bcm2711_dma_cfg },
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+ { .compatible = "brcm,bcm2712-dma", .data = &bcm2712_dma_cfg },
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{},
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};
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MODULE_DEVICE_TABLE(of, bcm2835_dma_of_match);
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