Merge tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "There's a lot of rework, the panic helper support is being added to
  more drivers, v3d gets support for HW superpages, scheduler
  documentation, drm client and video aperture reworks, some new
  MAINTAINERS added, amdgpu has the usual lots of IP refactors, Intel
  has some Pantherlake enablement and xe is getting some SRIOV bits, but
  just lots of stuff everywhere.

  core:
   - split DSC helpers from DP helpers
   - clang build fixes for drm/mm test
   - drop simple pipeline support for gem vram
   - document submission error signaling
   - move drm_rect to drm core module from kms helper
   - add default client setup to most drivers
   - move to video aperture helpers instead of drm ones

  tests:
   - new framebuffer tests

  ttm:
   - remove swapped and pinned BOs from TTM lru

  panic:
   - fix uninit spinlock
   - add ABGR2101010 support

  bridge:
   - add TI TDP158 support
   - use standard PM OPS

  dma-fence:
   - use read_trylock instead of read_lock to help lockdep

  scheduler:
   - add errno to sched start to report different errors
   - add locking to drm_sched_entity_modify_sched
   - improve documentation

  xe:
   - add drm_line_printer
   - lots of refactoring
   - Enable Xe2 + PES disaggregation
   - add new ARL PCI ID
   - SRIOV development work
   - fix exec unnecessary implicit fence
   - define and parse OA sync props
   - forcewake refactoring

  i915:
   - Enable BMG/LNL ultra joiner
   - Enable 10bpx + CCS scanout on ICL+, fp16/CCS on TGL+
   - use DSB for plane/color mgmt
   - Arrow lake PCI IDs
   - lots of i915/xe display refactoring
   - enable PXP GuC autoteardown
   - Pantherlake (PTL) Xe3 LPD display enablement
   - Allow fastset HDR infoframe changes
   - write DP source OUI for non-eDP sinks
   - share PCI IDs between i915 and xe

  amdgpu:
   - SDMA queue reset support
   - SMU 13.0.6, JPEG 4.0.3 updates
   - Initial runtime repartitioning support
   - rework IP structs for multiple IP instances
   - Fetch EDID from _DDC if available
   - SMU13 zero rpm user control
   - lots of fixes/cleanups

  amdkfd:
   - Increase event FIFO size
   - add topology cap flag for per queue reset

  msm:
   - DPU:
      - SA8775P support
      - (disabled by default) MSM8917, MSM8937, MSM8953 and MSM8996 support
      - Enable large framebuffer support
      - Drop MSM8998 and SDM845
   - DP:
      - SA8775P support
   - GPU:
      - a7xx preemption support
      - Adreno A663 support

  ast:
   - warn about unsupported TX chips

  ivpu:
   - add coredump
   - add pantherlake support

  rockchip:
   - 4K@60Hz display enablement
   - generate pll programming tables

  panthor:
   - add timestamp query API
   - add realtime group priority
   - add fdinfo support

  etnaviv:
   - improve handling of DMA address limits
   - improve GPU hangcheck

  exynos:
   - Decon Exynos7870 support

  mediatek:
   - add OF graph support

  omap:
   - locking fixes

  bochs:
   - convert to gem/shmem from simpledrm

  v3d:
   - support big/super pages
   - add gemfs

  vc4:
   - BCM2712 support refactoring
   - add YUV444 format support

  udmabuf:
   - folio related fixes

  nouveau:
   - add panic support on nv50+"

* tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel: (1583 commits)
  drm/xe/guc: Fix dereference before NULL check
  drm/amd: Fix initialization mistake for NBIO 7.7.0
  Revert "drm/amd/display: parse umc_info or vram_info based on ASIC"
  drm/amd/display: Fix failure to read vram info due to static BP_RESULT
  drm/amdgpu: enable GTT fallback handling for dGPUs only
  drm/amd/amdgpu: limit single process inside MES
  drm/fourcc: add AMD_FMT_MOD_TILE_GFX9_4K_D_X
  drm/amdgpu/mes12: correct kiq unmap latency
  drm/amdgpu: Support vcn and jpeg error info parsing
  drm/amd : Update MES API header file for v11 & v12
  drm/amd/amdkfd: add/remove kfd queues on start/stop KFD scheduling
  drm/amdkfd: change kfd process kref count at creation
  drm/amdgpu: Cleanup shift coding style
  drm/amd/amdgpu: Increase MES log buffer to dump mes scratch data
  drm/amdgpu: Implement virt req_ras_err_count
  drm/amdgpu: VF Query RAS Caps from Host if supported
  drm/amdgpu: Add msg handlers for SRIOV RAS Telemetry
  drm/amdgpu: Update SRIOV Exchange Headers for RAS Telemetry Support
  drm/amd/display: 3.2.309
  drm/amd/display: Adjust VSDB parser for replay feature
  ...

8 files changed, 320 insertions, 28 deletions

diff --git a/drivers/gpu/drm/mediatek/Kconfig b/drivers/gpu/drm/mediatek/Kconfig
index 417ac8c9af41..f496e6cfdfe0 100644
--- a/drivers/gpu/drm/mediatek/Kconfig
+++ b/drivers/gpu/drm/mediatek/Kconfig
@@ -2,11 +2,12 @@
 config DRM_MEDIATEK
 	tristate "DRM Support for Mediatek SoCs"
 	depends on DRM
-	depends on ARCH_MEDIATEK || (ARM && COMPILE_TEST)
+	depends on ARCH_MEDIATEK || COMPILE_TEST
 	depends on COMMON_CLK
-	depends on HAVE_ARM_SMCCC
+	depends on HAVE_ARM_SMCCC || COMPILE_TEST
 	depends on OF
 	depends on MTK_MMSYS
+	select DRM_CLIENT_SELECTION
 	select DRM_GEM_DMA_HELPER if DRM_FBDEV_EMULATION
 	select DRM_KMS_HELPER
 	select DRM_DISPLAY_HELPER
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index 04154db9085c..04217a36939c 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -109,6 +109,7 @@ size_t mtk_ovl_get_num_formats(struct device *dev);
 
 void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex);
 void mtk_ovl_adaptor_remove_comp(struct device *dev, struct mtk_mutex *mutex);
+bool mtk_ovl_adaptor_is_comp_present(struct device_node *node);
 void mtk_ovl_adaptor_connect(struct device *dev, struct device *mmsys_dev,
 			     unsigned int next);
 void mtk_ovl_adaptor_disconnect(struct device *dev, struct device *mmsys_dev,
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
index bf2546c4681a..187855d83590 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -497,6 +497,41 @@ static int compare_of(struct device *dev, void *data)
 	return dev->of_node == data;
 }
 
+static int ovl_adaptor_of_get_ddp_comp_type(struct device_node *node,
+					    enum mtk_ovl_adaptor_comp_type *ctype)
+{
+	const struct of_device_id *of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, node);
+
+	if (!of_id)
+		return -EINVAL;
+
+	*ctype = (enum mtk_ovl_adaptor_comp_type)((uintptr_t)of_id->data);
+
+	return 0;
+}
+
+bool mtk_ovl_adaptor_is_comp_present(struct device_node *node)
+{
+	enum mtk_ovl_adaptor_comp_type type;
+	int ret;
+
+	ret = ovl_adaptor_of_get_ddp_comp_type(node, &type);
+	if (ret)
+		return false;
+
+	if (type >= OVL_ADAPTOR_TYPE_NUM)
+		return false;
+
+	/*
+	 * In the context of mediatek-drm, ETHDR, MDP_RDMA and Padding are
+	 * used exclusively by OVL Adaptor: if this component is not one of
+	 * those, it's likely not an OVL Adaptor path.
+	 */
+	return type == OVL_ADAPTOR_TYPE_ETHDR ||
+	       type == OVL_ADAPTOR_TYPE_MDP_RDMA ||
+	       type == OVL_ADAPTOR_TYPE_PADDING;
+}
+
 static int ovl_adaptor_comp_init(struct device *dev, struct component_match **match)
 {
 	struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
@@ -506,12 +541,11 @@ static int ovl_adaptor_comp_init(struct device *dev, struct component_match **ma
 	parent = dev->parent->parent->of_node->parent;
 
 	for_each_child_of_node_scoped(parent, node) {
-		const struct of_device_id *of_id;
 		enum mtk_ovl_adaptor_comp_type type;
-		int id;
+		int id, ret;
 
-		of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, node);
-		if (!of_id)
+		ret = ovl_adaptor_of_get_ddp_comp_type(node, &type);
+		if (ret)
 			continue;
 
 		if (!of_device_is_available(node)) {
@@ -520,7 +554,6 @@ static int ovl_adaptor_comp_init(struct device *dev, struct component_match **ma
 			continue;
 		}
 
-		type = (enum mtk_ovl_adaptor_comp_type)(uintptr_t)of_id->data;
 		id = ovl_adaptor_comp_get_id(dev, node, type);
 		if (id < 0) {
 			dev_warn(dev, "Skipping unknown component %pOF\n",
diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
index f2bee617f063..1cc916b16471 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -394,7 +394,7 @@ static const struct mtk_dp_efuse_fmt mt8195_dp_efuse_fmt[MTK_DP_CAL_MAX] = {
 	},
 };
 
-static struct regmap_config mtk_dp_regmap_config = {
+static const struct regmap_config mtk_dp_regmap_config = {
 	.reg_bits = 32,
 	.val_bits = 32,
 	.reg_stride = 4,
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index a08d20654954..20a9d589fd75 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -704,6 +704,20 @@ 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(bridge->encoder, dpi->next_bridge,
 				 &dpi->bridge, flags);
@@ -1058,13 +1072,6 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 	if (dpi->irq < 0)
 		return dpi->irq;
 
-	dpi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
-	if (IS_ERR(dpi->next_bridge))
-		return dev_err_probe(dev, PTR_ERR(dpi->next_bridge),
-				     "Failed to get bridge\n");
-
-	dev_info(dev, "Found bridge node: %pOF\n", dpi->next_bridge->of_node);
-
 	platform_set_drvdata(pdev, dpi);
 
 	dpi->bridge.funcs = &mtk_dpi_bridge_funcs;
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 3e807195a0d0..9a8ef8558da9 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -14,6 +14,7 @@
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_client_setup.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fbdev_dma.h>
 #include <drm/drm_fourcc.h>
@@ -26,6 +27,7 @@
 
 #include "mtk_crtc.h"
 #include "mtk_ddp_comp.h"
+#include "mtk_disp_drv.h"
 #include "mtk_drm_drv.h"
 #include "mtk_gem.h"
 
@@ -371,12 +373,11 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev)
 	struct mtk_drm_private *temp_drm_priv;
 	struct device_node *phandle = dev->parent->of_node;
 	const struct of_device_id *of_id;
-	struct device_node *node;
 	struct device *drm_dev;
 	unsigned int cnt = 0;
 	int i, j;
 
-	for_each_child_of_node(phandle->parent, node) {
+	for_each_child_of_node_scoped(phandle->parent, node) {
 		struct platform_device *pdev;
 
 		of_id = of_match_node(mtk_drm_of_ids, node);
@@ -606,6 +607,7 @@ static const struct drm_driver mtk_drm_driver = {
 	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
 
 	.dumb_create = mtk_gem_dumb_create,
+	DRM_FBDEV_DMA_DRIVER_OPS,
 
 	.gem_prime_import = mtk_gem_prime_import,
 	.gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
@@ -662,7 +664,7 @@ static int mtk_drm_bind(struct device *dev)
 	if (ret < 0)
 		goto err_deinit;
 
-	drm_fbdev_dma_setup(drm, 32);
+	drm_client_setup(drm, NULL);
 
 	return 0;
 
@@ -818,12 +820,235 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 	{ }
 };
 
+static int mtk_drm_of_get_ddp_comp_type(struct device_node *node, enum mtk_ddp_comp_type *ctype)
+{
+	const struct of_device_id *of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
+
+	if (!of_id)
+		return -EINVAL;
+
+	*ctype = (enum mtk_ddp_comp_type)((uintptr_t)of_id->data);
+
+	return 0;
+}
+
+static int mtk_drm_of_get_ddp_ep_cid(struct device_node *node,
+				     int output_port, enum mtk_crtc_path crtc_path,
+				     struct device_node **next, unsigned int *cid)
+{
+	struct device_node *ep_dev_node, *ep_out;
+	enum mtk_ddp_comp_type comp_type;
+	int ret;
+
+	ep_out = of_graph_get_endpoint_by_regs(node, output_port, crtc_path);
+	if (!ep_out)
+		return -ENOENT;
+
+	ep_dev_node = of_graph_get_remote_port_parent(ep_out);
+	of_node_put(ep_out);
+	if (!ep_dev_node)
+		return -EINVAL;
+
+	/*
+	 * Pass the next node pointer regardless of failures in the later code
+	 * so that if this function is called in a loop it will walk through all
+	 * of the subsequent endpoints anyway.
+	 */
+	*next = ep_dev_node;
+
+	if (!of_device_is_available(ep_dev_node))
+		return -ENODEV;
+
+	ret = mtk_drm_of_get_ddp_comp_type(ep_dev_node, &comp_type);
+	if (ret) {
+		if (mtk_ovl_adaptor_is_comp_present(ep_dev_node)) {
+			*cid = (unsigned int)DDP_COMPONENT_DRM_OVL_ADAPTOR;
+			return 0;
+		}
+		return ret;
+	}
+
+	ret = mtk_ddp_comp_get_id(ep_dev_node, comp_type);
+	if (ret < 0)
+		return ret;
+
+	/* All ok! Pass the Component ID to the caller. */
+	*cid = (unsigned int)ret;
+
+	return 0;
+}
+
+/**
+ * mtk_drm_of_ddp_path_build_one - Build a Display HW Pipeline for a CRTC Path
+ * @dev:          The mediatek-drm device
+ * @cpath:        CRTC Path relative to a VDO or MMSYS
+ * @out_path:     Pointer to an array that will contain the new pipeline
+ * @out_path_len: Number of entries in the pipeline array
+ *
+ * MediaTek SoCs can use different DDP hardware pipelines (or paths) depending
+ * on the board-specific desired display configuration; this function walks
+ * through all of the output endpoints starting from a VDO or MMSYS hardware
+ * instance and builds the right pipeline as specified in device trees.
+ *
+ * Return:
+ * * %0       - Display HW Pipeline successfully built and validated
+ * * %-ENOENT - Display pipeline was not specified in device tree
+ * * %-EINVAL - Display pipeline built but validation failed
+ * * %-ENOMEM - Failure to allocate pipeline array to pass to the caller
+ */
+static int mtk_drm_of_ddp_path_build_one(struct device *dev, enum mtk_crtc_path cpath,
+					 const unsigned int **out_path,
+					 unsigned int *out_path_len)
+{
+	struct device_node *next, *prev, *vdo = dev->parent->of_node;
+	unsigned int temp_path[DDP_COMPONENT_DRM_ID_MAX] = { 0 };
+	unsigned int *final_ddp_path;
+	unsigned short int idx = 0;
+	bool ovl_adaptor_comp_added = false;
+	int ret;
+
+	/* Get the first entry for the temp_path array */
+	ret = mtk_drm_of_get_ddp_ep_cid(vdo, 0, cpath, &next, &temp_path[idx]);
+	if (ret) {
+		if (next && temp_path[idx] == DDP_COMPONENT_DRM_OVL_ADAPTOR) {
+			dev_dbg(dev, "Adding OVL Adaptor for %pOF\n", next);
+			ovl_adaptor_comp_added = true;
+		} else {
+			if (next)
+				dev_err(dev, "Invalid component %pOF\n", next);
+			else
+				dev_err(dev, "Cannot find first endpoint for path %d\n", cpath);
+
+			return ret;
+		}
+	}
+	idx++;
+
+	/*
+	 * Walk through port outputs until we reach the last valid mediatek-drm component.
+	 * To be valid, this must end with an "invalid" component that is a display node.
+	 */
+	do {
+		prev = next;
+		ret = mtk_drm_of_get_ddp_ep_cid(next, 1, cpath, &next, &temp_path[idx]);
+		of_node_put(prev);
+		if (ret) {
+			of_node_put(next);
+			break;
+		}
+
+		/*
+		 * If this is an OVL adaptor exclusive component and one of those
+		 * was already added, don't add another instance of the generic
+		 * DDP_COMPONENT_OVL_ADAPTOR, as this is used only to decide whether
+		 * to probe that component master driver of which only one instance
+		 * is needed and possible.
+		 */
+		if (temp_path[idx] == DDP_COMPONENT_DRM_OVL_ADAPTOR) {
+			if (!ovl_adaptor_comp_added)
+				ovl_adaptor_comp_added = true;
+			else
+				idx--;
+		}
+	} while (++idx < DDP_COMPONENT_DRM_ID_MAX);
+
+	/*
+	 * The device component might not be enabled: in that case, don't
+	 * check the last entry and just report that the device is missing.
+	 */
+	if (ret == -ENODEV)
+		return ret;
+
+	/* If the last entry is not a final display output, the configuration is wrong */
+	switch (temp_path[idx - 1]) {
+	case DDP_COMPONENT_DP_INTF0:
+	case DDP_COMPONENT_DP_INTF1:
+	case DDP_COMPONENT_DPI0:
+	case DDP_COMPONENT_DPI1:
+	case DDP_COMPONENT_DSI0:
+	case DDP_COMPONENT_DSI1:
+	case DDP_COMPONENT_DSI2:
+	case DDP_COMPONENT_DSI3:
+		break;
+	default:
+		dev_err(dev, "Invalid display hw pipeline. Last component: %d (ret=%d)\n",
+			temp_path[idx - 1], ret);
+		return -EINVAL;
+	}
+
+	final_ddp_path = devm_kmemdup(dev, temp_path, idx * sizeof(temp_path[0]), GFP_KERNEL);
+	if (!final_ddp_path)
+		return -ENOMEM;
+
+	dev_dbg(dev, "Display HW Pipeline built with %d components.\n", idx);
+
+	/* Pipeline built! */
+	*out_path = final_ddp_path;
+	*out_path_len = idx;
+
+	return 0;
+}
+
+static int mtk_drm_of_ddp_path_build(struct device *dev, struct device_node *node,
+				     struct mtk_mmsys_driver_data *data)
+{
+	struct device_node *ep_node;
+	struct of_endpoint of_ep;
+	bool output_present[MAX_CRTC] = { false };
+	int ret;
+
+	for_each_endpoint_of_node(node, ep_node) {
+		ret = of_graph_parse_endpoint(ep_node, &of_ep);
+		if (ret) {
+			dev_err_probe(dev, ret, "Cannot parse endpoint\n");
+			break;
+		}
+
+		if (of_ep.id >= MAX_CRTC) {
+			ret = dev_err_probe(dev, -EINVAL,
+					    "Invalid endpoint%u number\n", of_ep.port);
+			break;
+		}
+
+		output_present[of_ep.id] = true;
+	}
+
+	if (ret) {
+		of_node_put(ep_node);
+		return ret;
+	}
+
+	if (output_present[CRTC_MAIN]) {
+		ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_MAIN,
+						    &data->main_path, &data->main_len);
+		if (ret && ret != -ENODEV)
+			return ret;
+	}
+
+	if (output_present[CRTC_EXT]) {
+		ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_EXT,
+						    &data->ext_path, &data->ext_len);
+		if (ret && ret != -ENODEV)
+			return ret;
+	}
+
+	if (output_present[CRTC_THIRD]) {
+		ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_THIRD,
+						    &data->third_path, &data->third_len);
+		if (ret && ret != -ENODEV)
+			return ret;
+	}
+
+	return 0;
+}
+
 static int mtk_drm_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *phandle = dev->parent->of_node;
 	const struct of_device_id *of_id;
 	struct mtk_drm_private *private;
+	struct mtk_mmsys_driver_data *mtk_drm_data;
 	struct device_node *node;
 	struct component_match *match = NULL;
 	struct platform_device *ovl_adaptor;
@@ -844,7 +1069,27 @@ static int mtk_drm_probe(struct platform_device *pdev)
 	if (!of_id)
 		return -ENODEV;
 
-	private->data = of_id->data;
+	mtk_drm_data = (struct mtk_mmsys_driver_data *)of_id->data;
+	if (!mtk_drm_data)
+		return -EINVAL;
+
+	/* Try to build the display pipeline from devicetree graphs */
+	if (of_graph_is_present(phandle)) {
+		dev_dbg(dev, "Building display pipeline for MMSYS %u\n",
+			mtk_drm_data->mmsys_id);
+		private->data = devm_kmemdup(dev, mtk_drm_data,
+					     sizeof(*mtk_drm_data), GFP_KERNEL);
+		if (!private->data)
+			return -ENOMEM;
+
+		ret = mtk_drm_of_ddp_path_build(dev, phandle, private->data);
+		if (ret)
+			return ret;
+	} else {
+		/* No devicetree graphs support: go with hardcoded paths if present */
+		dev_dbg(dev, "Using hardcoded paths for MMSYS %u\n", mtk_drm_data->mmsys_id);
+		private->data = mtk_drm_data;
+	};
 
 	private->all_drm_private = devm_kmalloc_array(dev, private->data->mmsys_dev_num,
 						      sizeof(*private->all_drm_private),
@@ -866,12 +1111,11 @@ static int mtk_drm_probe(struct platform_device *pdev)
 
 	/* Iterate over sibling DISP function blocks */
 	for_each_child_of_node(phandle->parent, node) {
-		const struct of_device_id *of_id;
 		enum mtk_ddp_comp_type comp_type;
 		int comp_id;
 
-		of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
-		if (!of_id)
+		ret = mtk_drm_of_get_ddp_comp_type(node, &comp_type);
+		if (ret)
 			continue;
 
 		if (!of_device_is_available(node)) {
@@ -880,8 +1124,6 @@ static int mtk_drm_probe(struct platform_device *pdev)
 			continue;
 		}
 
-		comp_type = (enum mtk_ddp_comp_type)(uintptr_t)of_id->data;
-
 		if (comp_type == MTK_DISP_MUTEX) {
 			int id;
 
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index ce897984de51..675cdc90a440 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -63,7 +63,7 @@ struct mtk_drm_private {
 	struct device *mmsys_dev;
 	struct device_node *comp_node[DDP_COMPONENT_DRM_ID_MAX];
 	struct mtk_ddp_comp ddp_comp[DDP_COMPONENT_DRM_ID_MAX];
-	const struct mtk_mmsys_driver_data *data;
+	struct mtk_mmsys_driver_data *data;
 	struct drm_atomic_state *suspend_state;
 	unsigned int mbox_index;
 	struct mtk_drm_private **all_drm_private;
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index eeec641cab60..33ceeb8d6925 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -988,9 +988,17 @@ static int mtk_dsi_host_attach(struct mipi_dsi_host *host,
 	dsi->lanes = device->lanes;
 	dsi->format = device->format;
 	dsi->mode_flags = device->mode_flags;
-	dsi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
-	if (IS_ERR(dsi->next_bridge))
-		return PTR_ERR(dsi->next_bridge);
+	dsi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+	if (IS_ERR(dsi->next_bridge)) {
+		ret = PTR_ERR(dsi->next_bridge);
+		if (ret == -EPROBE_DEFER)
+			return ret;
+
+		/* Old devicetree has only one endpoint */
+		dsi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
+		if (IS_ERR(dsi->next_bridge))
+			return PTR_ERR(dsi->next_bridge);
+	}
 
 	drm_bridge_add(&dsi->bridge);