diff options
| author | Amjad Ouled-Ameur <amjad.ouled-ameur@arm.com> | 2024-02-19 15:39:15 +0530 |
|---|---|---|
| committer | Liviu Dudau <liviu.dudau@arm.com> | 2024-05-10 11:26:24 +0100 |
| commit | a918dcfecc36f87521eaf183812ec3496602f717 (patch) | |
| tree | 5599c38613c73b8a655b04874ffd214e88a25315 /drivers | |
| parent | 71b03802fe3b6e45e7b53db9e9c908fec714297c (diff) | |
drm/arm/komeda: update DMA mask to 40 bits
Each layer in the DPU has a 40-bit base address register, which indicates
start of frame buffer data for that layer. Komeda driver does not set
its DMA mask, which makes it 32-bit by default which does not use
the entire available possible supported by the DPU.
Update the DMA mask to align with DPU Architecture v1.0 spec.
Signed-off-by: Amjad Ouled-Ameur <amjad.ouled-ameur@arm.com>
Signed-off-by: Faiz Abbas <faiz.abbas@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240219100915.192475-4-faiz.abbas@arm.com
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_drv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c index ffdeec3b3f2e..55c3773befde 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c @@ -59,6 +59,10 @@ static int komeda_platform_probe(struct platform_device *pdev) struct komeda_drv *mdrv; int err; + err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); + if (err) + return dev_err_probe(dev, err, "DMA mask error\n"); + mdrv = devm_kzalloc(dev, sizeof(*mdrv), GFP_KERNEL); if (!mdrv) return -ENOMEM; |