target/linux/bcm27xx/patches-6.1/950-0911-dmaengine-bcm2835-Add-BCM2712-support.patch

   1 From 87c5545f9a66984894384da5f8c2eeb60983732a Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Wed, 8 Mar 2023 16:53:38 +0000
   4 Subject: [PATCH] dmaengine: bcm2835: Add BCM2712 support
   5
   6 BCM2712 has 6 40-bit channels - DMA6 to DMA11. Add a new compatible
   7 string to indicate that the current platform is BCM2712.
   8
   9 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  10 ---
  11  drivers/dma/bcm2835-dma.c | 7 +++++++
  12  1 file changed, 7 insertions(+)
  13
  14 --- a/drivers/dma/bcm2835-dma.c
  15 +++ b/drivers/dma/bcm2835-dma.c
  16 @@ -331,6 +331,12 @@ static const struct bcm2835_dma_cfg_data
  17         .dma_mask = DMA_BIT_MASK(36),
  18  };
  19
  20 +static const struct bcm2835_dma_cfg_data bcm2712_dma_cfg = {
  21 +       .chan_40bit_mask = BIT(6) | BIT(7) | BIT(8) | BIT(9) |
  22 +                                BIT(10) | BIT(11),
  23 +       .dma_mask = DMA_BIT_MASK(40),
  24 +};
  25 +
  26  static inline size_t bcm2835_dma_max_frame_length(struct bcm2835_chan *c)
  27  {
  28         /* lite and normal channels have different max frame length */
  29 @@ -1260,6 +1266,7 @@ EXPORT_SYMBOL(bcm2711_dma40_memcpy);
  30  static const struct of_device_id bcm2835_dma_of_match[] = {
  31         { .compatible = "brcm,bcm2835-dma", .data = &bcm2835_dma_cfg },
  32         { .compatible = "brcm,bcm2711-dma", .data = &bcm2711_dma_cfg },
  33 +       { .compatible = "brcm,bcm2712-dma", .data = &bcm2712_dma_cfg },
  34         {},
  35  };
  36  MODULE_DEVICE_TABLE(of, bcm2835_dma_of_match);