From: Amjad Ouled-Ameur Date: Mon, 19 Feb 2024 10:09:15 +0000 (+0530) Subject: drm/arm/komeda: update DMA mask to 40 bits X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a918dcfecc36f87521eaf183812ec3496602f717;p=users%2Fjedix%2Flinux-maple.git 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 Signed-off-by: Faiz Abbas Signed-off-by: Liviu Dudau Link: https://patchwork.freedesktop.org/patch/msgid/20240219100915.192475-4-faiz.abbas@arm.com Acked-by: Liviu Dudau --- 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;