Merge tag 'mediatek-drm-fixes-20260119' of https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-fixes

Mediatek DRM Fixes - 20260119

1. Fix platform_get_irq() error checking
2. HDMI DDC v2 driver fixes
3. dpi: Find next bridge during probe
4. mtk_gem: Partial refactor and use drm_gem_dma_object
5. dt-bindings: Fix typo 'hardwares' to 'hardware'

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Link: https://patch.msgid.link/20260119154717.4735-1-chunkuang.hu@kernel.org

Author: airlied

Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml

@@ -11,7 +11,7 @@ maintainers:
   - Jitao shi <jitao.shi@mediatek.com>
 
 description: |
-  MediaTek DP and eDP are different hardwares and there are some features
+  MediaTek DP and eDP are different hardware and there are some features
   which are not supported for eDP. For example, audio is not supported for
   eDP. Therefore, we need to use two different compatibles to describe them.
   In addition, We just need to enable the power domain of DP, so the clock

drivers/gpu/drm/mediatek/Kconfig

@@ -8,7 +8,7 @@ config DRM_MEDIATEK
 	depends on OF
 	depends on MTK_MMSYS
 	select DRM_CLIENT_SELECTION
-	select DRM_GEM_DMA_HELPER if DRM_FBDEV_EMULATION
+	select DRM_GEM_DMA_HELPER
 	select DRM_KMS_HELPER
 	select DRM_DISPLAY_HELPER
 	select DRM_BRIDGE_CONNECTOR

drivers/gpu/drm/mediatek/mtk_dpi.c

@@ -836,20 +836,6 @@ static int mtk_dpi_bridge_attach(struct drm_bridge *bridge,
 				 enum drm_bridge_attach_flags flags)
 {
 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);
-	int ret;
-
-	dpi->next_bridge = devm_drm_of_get_bridge(dpi->dev, dpi->dev->of_node, 1, -1);
-	if (IS_ERR(dpi->next_bridge)) {
-		ret = PTR_ERR(dpi->next_bridge);
-		if (ret == -EPROBE_DEFER)
-			return ret;
-
-		/* Old devicetree has only one endpoint */
-		dpi->next_bridge = devm_drm_of_get_bridge(dpi->dev, dpi->dev->of_node, 0, 0);
-		if (IS_ERR(dpi->next_bridge))
-			return dev_err_probe(dpi->dev, PTR_ERR(dpi->next_bridge),
-					     "Failed to get bridge\n");
-	}
 
 	return drm_bridge_attach(encoder, dpi->next_bridge,
 				 &dpi->bridge, flags);
@@ -1319,6 +1305,15 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 	if (dpi->irq < 0)
 		return dpi->irq;
 
+	dpi->next_bridge = devm_drm_of_get_bridge(dpi->dev, dpi->dev->of_node, 1, -1);
+	if (IS_ERR(dpi->next_bridge) && PTR_ERR(dpi->next_bridge) == -ENODEV) {
+		/* Old devicetree has only one endpoint */
+		dpi->next_bridge = devm_drm_of_get_bridge(dpi->dev, dpi->dev->of_node, 0, 0);
+	}
+	if (IS_ERR(dpi->next_bridge))
+		return dev_err_probe(dpi->dev, PTR_ERR(dpi->next_bridge),
+				     "Failed to get bridge\n");
+
 	platform_set_drvdata(pdev, dpi);
 
 	dpi->bridge.of_node = dev->of_node;