diff options
Diffstat (limited to 'drivers/gpu/drm/v3d/v3d_drv.c')
-rw-r--r-- | drivers/gpu/drm/v3d/v3d_drv.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index df66c90a0102..747fb6205ba8 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -239,9 +239,9 @@ static int v3d_platform_drm_probe(struct platform_device *pdev) struct drm_device *drm; struct v3d_dev *v3d; int ret; + u32 mmu_debug; u32 ident1; - dev->coherent_dma_mask = DMA_BIT_MASK(36); v3d = kzalloc(sizeof(*v3d), GFP_KERNEL); if (!v3d) @@ -258,6 +258,10 @@ static int v3d_platform_drm_probe(struct platform_device *pdev) if (ret) goto dev_free; + 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)); + ident1 = V3D_READ(V3D_HUB_IDENT1); v3d->ver = (V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_TVER) * 10 + V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_REV)); |