drm/vc4: drv: Support BCM2712

The BCM2712 has an improved display pipeline, most notably with a
different HVS and only HDMI and writeback outputs.

Let's introduce it as a new VideoCore generation and compatible.

Signed-off-by: Maxime Ripard <[email protected]>

Author: mripard

drivers/gpu/drm/vc4/vc4_drv.c

@@ -310,7 +310,9 @@ static int vc4_drm_bind(struct device *dev)
 
 	dev->coherent_dma_mask = DMA_BIT_MASK(32);
 
-	if (of_device_is_compatible(dev->of_node, "brcm,bcm2711-vc5"))
+	if (of_device_is_compatible(dev->of_node, "brcm,bcm2712-vc6"))
+		gen = VC4_GEN_6;
+	else if (of_device_is_compatible(dev->of_node, "brcm,bcm2711-vc5"))
 		gen = VC4_GEN_5;
 	else
 		gen = VC4_GEN_4;
@@ -475,6 +477,7 @@ static int vc4_platform_drm_remove(struct platform_device *pdev)
 
 static const struct of_device_id vc4_of_match[] = {
 	{ .compatible = "brcm,bcm2711-vc5", },
+	{ .compatible = "brcm,bcm2712-vc6", },
 	{ .compatible = "brcm,bcm2835-vc4", },
 	{ .compatible = "brcm,cygnus-vc4", },
 	{},

drivers/gpu/drm/vc4/vc4_drv.h

@@ -84,6 +84,7 @@ struct vc4_perfmon {
 enum vc4_gen {
 	VC4_GEN_4,
 	VC4_GEN_5,
+	VC4_GEN_6,
 };
 
 struct vc4_dev {