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path: root/target/linux/bcm27xx/patches-5.10/950-0179-drm-v3d-Set-dma_mask-as-well-as-coherent_dma_mask.patch
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From 0a34bafa5816dd1425550968ff7d3de2dc955e6f Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 22 Nov 2019 16:23:32 +0000
Subject: [PATCH] drm/v3d: Set dma_mask as well as coherent_dma_mask

Both coherent_dma_mask and dma_mask act as constraints on allocations
and bounce buffer usage, so be sure to set dma_mask to the appropriate
value otherwise the effective mask could be incorrect.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
 drivers/gpu/drm/v3d/v3d_drv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -263,8 +263,8 @@ static int v3d_platform_drm_probe(struct
 		return ret;
 
 	mmu_debug = V3D_READ(V3D_MMU_DEBUG_INFO);
-	dev->coherent_dma_mask =
-		DMA_BIT_MASK(30 + V3D_GET_FIELD(mmu_debug, V3D_MMU_PA_WIDTH));
+	dma_set_mask_and_coherent(dev,
+		DMA_BIT_MASK(30 + V3D_GET_FIELD(mmu_debug, V3D_MMU_PA_WIDTH)));
 	v3d->va_width = 30 + V3D_GET_FIELD(mmu_debug, V3D_MMU_VA_WIDTH);
 
 	ident1 = V3D_READ(V3D_HUB_IDENT1);
| 5 +++++ 2 files changed, 11 insertions(+) --- a/Documentation/devicetree/bindings/serial/pl011.yaml +++ b/Documentation/devicetree/bindings/serial/pl011.yaml @@ -98,6 +98,12 @@ properties: $ref: /schemas/types.yaml#/definitions/uint32 default: 3000 + cts-event-workaround: + description: + Enables the (otherwise vendor-specific) workaround for the + CTS-induced TX lockup. + type: boolean + required: - compatible - reg --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2686,6 +2686,11 @@ static int pl011_probe(struct amba_devic if (IS_ERR(uap->clk)) return PTR_ERR(uap->clk); + if (of_property_read_bool(dev->dev.of_node, "cts-event-workaround")) { + vendor->cts_event_workaround = true; + dev_info(&dev->dev, "cts_event_workaround enabled\n"); + } + uap->reg_offset = vendor->reg_offset; uap->vendor = vendor; uap->fifosize = vendor->get_fifosize(dev);