linux-kernel - [PATCH 09/12] dmaengine: bcm2835: Add BCM2712 support

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Date: Sun,  4 Feb 2024 07:59:37 +0100
From: Andrea della Porta <andrea.porta@...e.com>
To: Vinod Koul <vkoul@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	dmaengine@...r.kernel.org,
	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Maxime Ripard <maxime@...no.tech>,
	Dom Cobley <popcornmix@...il.com>,
	Phil Elwell <phil@...pberrypi.com>
Subject: [PATCH 09/12] dmaengine: bcm2835: Add BCM2712 support

From: Phil Elwell <phil@...pberrypi.com>

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@...pberrypi.com>
---
 drivers/dma/bcm2835-dma.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index 1b3f470274b2..548cf7343d83 100644
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -326,6 +326,12 @@ 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 */
@@ -1250,6 +1256,7 @@ 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);
-- 
2.41.0