Merge tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "cross-subsystem:
   - i2c-hid: Make elan touch controllers power on after panel is
     enabled
   - dt bindings for STM32MP25 SoC
   - pci vgaarb: use screen_info helpers
   - rust pin-init updates
   - add MEI driver for late binding firmware update/load

  uapi:
   - add ioctl for reassigning GEM handles
   - provide boot_display attribute on boot-up devices

  core:
   - document DRM_MODE_PAGE_FLIP_EVENT
   - add vendor specific recovery method to drm device wedged uevent

  gem:
   - Simplify gpuvm locking

  ttm:
   - add interface to populate buffers

  sched:
   - Fix race condition in trace code

  atomic:
   - Reallow no-op async page flips

  display:
   - dp: Fix command length

  video:
   - Improve pixel-format handling for struct screen_info

  rust:
   - drop Opaque<> from ioctl args
   - Alloc:
       - BorrowedPage type and AsPageIter traits
       - Implement Vmalloc::to_page() and VmallocPageIter
   - DMA/Scatterlist:
       - Add dma::DataDirection and type alias for dma_addr_t
       - Abstraction for struct scatterlist and sg_table
   - DRM:
       - simplify use of generics
       - add DriverFile type alias
       - drop Object::SIZE
   - Rust:
       - pin-init tree merge
       - Various methods for AsBytes and FromBytes traits

  gpuvm:
   - Support madvice in Xe driver

  gpusvm:
   - fix hmm_pfn_to_map_order usage in gpusvm

  bridge:
   - Improve and fix ref counting on bridge management
   - cdns-dsi: Various improvements to mode setting
   - Support Solomon SSD2825 plus DT bindings
   - Support Waveshare DSI2DPI plus DT bindings
   - Support Content Protection property
   - display-connector: Improve DP display detection
   - Add support for Radxa Ra620 plus DT bindings
   - adv7511: Provide SPD and HDMI infoframes
   - it6505: Replace crypto_shash with sha()
   - synopsys: Add support for DW DPTX Controller plus DT bindings
   - adv7511: Write full Audio infoframe
   - ite6263: Support vendor-specific infoframes
   - simple: Add support for Realtek RTD2171 DP-to-HDMI plus DT bindings

  panel:
   - panel-edp: Support mt8189 Chromebooks; Support BOE NV140WUM-N64;
     Support SHP LQ134Z1; Fixes
   - panel-simple: Support Olimex LCD-OLinuXino-5CTS plus DT bindings
   - Support Samsung AMS561RA01
   - Support Hydis HV101HD1 plus DT bindings
   - ilitek-ili9881c: Refactor mode setting; Add support for Bestar
     BSD1218-A101KL68 LCD plus DT bindings
   - lvds: Add support for Ampire AMP19201200B5TZQW-T03 to DT bindings
   - edp: Add support for additonal mt8189 Chromebook panels
   - lvds: Add DT bindings for EDT ETML0700Z8DHA

  amdgpu:
   - add CRIU support for gem objects
   - RAS updates
   - VCN SRAM load fixes
   - EDID read fixes
   - eDP ALPM support
   - Documentation updates
   - Rework PTE flag generation
   - DCE6 fixes
   - VCN devcoredump cleanup
   - MMHUB client id fixes
   - VCN 5.0.1 RAS support
   - SMU 13.0.x updates
   - Expanded PCIe DPC support
   - Expanded VCN reset support
   - VPE per queue reset support
   - give kernel jobs unique id for tracing
   - pre-populate exported buffers
   - cyan skillfish updates
   - make vbios build number available in sysfs
   - userq updates
   - HDCP updates
   - support MMIO remap page as ttm pool
   - JPEG parser updates
   - DCE6 DC updates
   - use devm for i2c buses
   - GPUVM locking updates
   - Drop non-DC DCE11 code
   - improve fallback handling for pixel encoding

  amdkfd:
   - SVM/page migration fixes
   - debugfs fixes
   - add CRIO support for gem objects
   - SVM updates

  radeon:
   - use dev_warn_once in CS parsers

  xe:
   - add madvise interface
   - add DRM_IOCTL_XE_VM_QUERY_MEMORY_RANGE_ATTRS to query VMA count
     and memory attributes
   - drop L# bank mask reporting from media GT3 on Xe3+.
   - add SLPC power_profile sysfs interface
   - add configs attribs to add post/mid context-switch commands
   - handle firmware reported hardware errors notifying userspace with
     device wedged uevent
   - use same dir structure across sysfs/debugfs
   - cleanup and future proof vram region init
   - add G-states and PCI link states to debugfs
   - Add SRIOV support for CCS surfaces on Xe2+
   - Enable SRIOV PF mode by default on supported platforms
   - move flush to common code
   - extended core workarounds for Xe2/3
   - use DRM scheduler for delayed GT TLB invalidations
   - configs improvements and allow VF device enablement
   - prep work to expose mmio regions to userspace
   - VF migration support added
   - prepare GPU SVM for THP migration
   - start fixing XE_PAGE_SIZE vs PAGE_SIZE
   - add PSMI support for hw validation
   - resize VF bars to max possible size according to number of VFs
   - Ensure GT is in C0 during resume
   - pre-populate exported buffers
   - replace xe_hmm with gpusvm
   - add more SVM GT stats to debugfs
   - improve fake pci and WA kunnit handle for new platform testing
   - Test GuC to GuC comms to add debugging
   - use attribute groups to simplify sysfs registration
   - add Late Binding firmware code to interact with MEI

  i915:
   - apply multiple JSL/EHL/Gen7/Gen6 workarounds properly
   - protect against overflow in active_engine()
   - Use try_cmpxchg64() in __active_lookup()
   - include GuC registers in error state
   - get rid of dev->struct_mutex
   - iopoll: generalize read_poll_timout
   - lots more display refactoring
   - Reject HBR3 in any eDP Panel
   - Prune modes for YUV420
   - Display Wa fix, additions, and updates
   - DP: Fix 2.7 Gbps link training on g4x
   - DP: Adjust the idle pattern handling
   - DP: Shuffle the link training code a bit
   - Don't set/read the DSI C clock divider on GLK
   - Enable_psr kernel parameter changes
   - Type-C enabled/disconnected dp-alt sink
   - Wildcat Lake enabling
   - DP HDR updates
   - DRAM detection
   - wait PSR idle on dsb commit
   - Remove FBC modulo 4 restriction for ADL-P+
   - panic: refactor framebuffer allocation

  habanalabs:
   - debug/visibility improvements
   - vmalloc-backed coherent mmap support
   - HLDIO infrastructure

  nova-core:
   - various register!() macro improvements
   - minor vbios/firmware fixes/refactoring
   - advance firmware boot stages; process Booter and patch signatures
   - process GSP and GSP bootloader
   - Add r570.144 firmware bindings and update to it
   - Move GSP boot code to own module
   - Use new pin-init features to store driver's private data in a
     single allocation
   - Update ARef import from sync::aref

  nova-drm:
   - Update ARef import from sync::aref

  tyr:
   - initial driver skeleton for a rust driver for ARM Mali GPUs
   - capable of powering up, query metadata and provide it to userspace.

  msm:
   - GPU and Core:
      - in DT bindings describe clocks per GPU type
      - GMU bandwidth voting for x1-85
      - a623/a663 speedbins
      - cleanup some remaining no-iommu leftovers after VM_BIND conversion
      - fix GEM obj 32b size truncation
      - add missing VM_BIND param validation
      - IFPC for x1-85 and a750
      - register xml and gen_header.py sync from mesa
   - Display:
      - add missing bindings for display on SC8180X
      - added DisplayPort MST bindings
      - conversion from round_rate() to determine_rate()

  amdxdna:
   - add IOCTL_AMDXDNA_GET_ARRAY
   - support user space allocated buffers
   - streamline PM interfaces
   - Refactoring wrt. hardware contexts
   - improve error reporting

  nouveau:
   - use GSP firmware by default
   - improve error reporting
   - Pre-populate exported buffers

  ast:
   - Clean up detection of DRAM config

  exynos:
   - add DSIM bridge driver support for Exynos7870
   - Document Exynos7870 DSIM compatible in dt-binding

  panthor:
   - Print task/pid on errors
   - Add support for Mali G710, G510, G310, Gx15, Gx20, Gx25
   - Improve cache flushing
   - Fail VM bind if BO has offset

  renesas:
   - convert to RUNTIME_PM_OPS

  rcar-du:
   - Make number of lanes configurable
   - Use RUNTIME_PM_OPS
   - Add support for DSI commands

  rocket:
   - Add driver for Rockchip NPU plus DT bindings
   - Use kfree() and sizeof() correctly
   - Test DMA status

  rockchip:
   - dsi2: Add support for RK3576 plus DT bindings
   - Add support for RK3588 DPTX output

  tidss:
   - Use crtc_ fields for programming display mode
   - Remove other drivers from aperture

  pixpaper:
   - Add support for Mayqueen Pixpaper plus DT bindings

  v3d:
   - Support querying nubmer of GPU resets for KHR_robustness

  stm:
   - Clean up logging
   - ltdc: Add support support for STM32MP257F-EV1 plus DT bindings

  sitronix:
   - st7571-i2c: Add support for inverted displays and 2-bit grayscale

  tidss:
   - Convert to kernel's FIELD_ macros

  vesadrm:
   - Support 8-bit palette mode

  imagination:
   - Improve power management
   - Add support for TH1520 GPU
   - Support Risc-V architectures

  v3d:
   - Improve job management and locking

  vkms:
   - Support variants of ARGB8888, ARGB16161616, RGB565, RGB888 and P01x
   - Spport YUV with 16-bit components"

* tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel: (1455 commits)
  drm/amd: Add name to modes from amdgpu_connector_add_common_modes()
  drm/amd: Drop some common modes from amdgpu_connector_add_common_modes()
  drm/amdgpu: update MODULE_PARM_DESC for freesync_video
  drm/amd: Use dynamic array size declaration for amdgpu_connector_add_common_modes()
  drm/amd/display: Share dce100_validate_global with DCE6-8
  drm/amd/display: Share dce100_validate_bandwidth with DCE6-8
  drm/amdgpu: Fix fence signaling race condition in userqueue
  amd/amdkfd: enhance kfd process check in switch partition
  amd/amdkfd: resolve a race in amdgpu_amdkfd_device_fini_sw
  drm/amd/display: Reject modes with too high pixel clock on DCE6-10
  drm/amd: Drop unnecessary check in amdgpu_connector_add_common_modes()
  drm/amd/display: Only enable common modes for eDP and LVDS
  drm/amdgpu: remove the redeclaration of variable i
  drm/amdgpu/userq: assign an error code for invalid userq va
  drm/amdgpu: revert "rework reserved VMID handling" v2
  drm/amdgpu: remove leftover from enforcing isolation by VMID
  drm/amdgpu: Add fallback to pipe reset if KCQ ring reset fails
  accel/habanalabs: add Infineon version check
  accel/habanalabs/gaudi2: read preboot status after recovering from dirty state
  accel/habanalabs: add HL_GET_P_STATE passthrough type
  ...

1 files changed, 125 insertions, 72 deletions

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index ba315c66a04d..d1501e86a5b1 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -14,6 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/media-bus-format.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/of_graph.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
@@ -51,6 +52,7 @@
 #define HWVER_10300 0x010300
 #define HWVER_20101 0x020101
 #define HWVER_40100 0x040100
+#define HWVER_40101 0x040101
 
 /*
  * The address of some registers depends on the HW version: such registers have
@@ -641,7 +643,7 @@ static inline void ltdc_set_ycbcr_config(struct drm_plane *plane, u32 drm_pix_fm
 		break;
 	default:
 		/* RGB or not a YCbCr supported format */
-		DRM_ERROR("Unsupported pixel format: %u\n", drm_pix_fmt);
+		drm_err(plane->dev, "Unsupported pixel format: %u\n", drm_pix_fmt);
 		return;
 	}
 
@@ -664,18 +666,19 @@ static inline void ltdc_set_ycbcr_coeffs(struct drm_plane *plane)
 	u32 lofs = plane->index * LAY_OFS;
 
 	if (enc != DRM_COLOR_YCBCR_BT601 && enc != DRM_COLOR_YCBCR_BT709) {
-		DRM_ERROR("color encoding %d not supported, use bt601 by default\n", enc);
+		drm_err(plane->dev, "color encoding %d not supported, use bt601 by default\n", enc);
 		/* set by default color encoding to DRM_COLOR_YCBCR_BT601 */
 		enc = DRM_COLOR_YCBCR_BT601;
 	}
 
 	if (ran != DRM_COLOR_YCBCR_LIMITED_RANGE && ran != DRM_COLOR_YCBCR_FULL_RANGE) {
-		DRM_ERROR("color range %d not supported, use limited range by default\n", ran);
+		drm_err(plane->dev,
+			"color range %d not supported, use limited range by default\n", ran);
 		/* set by default color range to DRM_COLOR_YCBCR_LIMITED_RANGE */
 		ran = DRM_COLOR_YCBCR_LIMITED_RANGE;
 	}
 
-	DRM_DEBUG_DRIVER("Color encoding=%d, range=%d\n", enc, ran);
+	drm_err(plane->dev, "Color encoding=%d, range=%d\n", enc, ran);
 	regmap_write(ldev->regmap, LTDC_L1CYR0R + lofs,
 		     ltdc_ycbcr2rgb_coeffs[enc][ran][0]);
 	regmap_write(ldev->regmap, LTDC_L1CYR1R + lofs,
@@ -774,7 +777,7 @@ static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc,
 	struct ltdc_device *ldev = crtc_to_ltdc(crtc);
 	struct drm_device *ddev = crtc->dev;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(crtc->dev, "\n");
 
 	pm_runtime_get_sync(ddev->dev);
 
@@ -798,7 +801,7 @@ static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc,
 	struct drm_device *ddev = crtc->dev;
 	int layer_index = 0;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(crtc->dev, "\n");
 
 	drm_crtc_vblank_off(crtc);
 
@@ -835,9 +838,15 @@ ltdc_crtc_mode_valid(struct drm_crtc *crtc,
 	int target_max = target + CLK_TOLERANCE_HZ;
 	int result;
 
+	if (ldev->lvds_clk) {
+		result = clk_round_rate(ldev->lvds_clk, target);
+		drm_dbg_driver(crtc->dev, "lvds pixclk rate target %d, available %d\n",
+			       target, result);
+	}
+
 	result = clk_round_rate(ldev->pixel_clk, target);
 
-	DRM_DEBUG_DRIVER("clk rate target %d, available %d\n", target, result);
+	drm_dbg_driver(crtc->dev, "clk rate target %d, available %d\n", target, result);
 
 	/* Filter modes according to the max frequency supported by the pads */
 	if (result > ldev->caps.pad_max_freq_hz)
@@ -872,14 +881,14 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
 	int rate = mode->clock * 1000;
 
 	if (clk_set_rate(ldev->pixel_clk, rate) < 0) {
-		DRM_ERROR("Cannot set rate (%dHz) for pixel clk\n", rate);
+		drm_err(crtc->dev, "Cannot set rate (%dHz) for pixel clk\n", rate);
 		return false;
 	}
 
 	adjusted_mode->clock = clk_get_rate(ldev->pixel_clk) / 1000;
 
-	DRM_DEBUG_DRIVER("requested clock %dkHz, adjusted clock %dkHz\n",
-			 mode->clock, adjusted_mode->clock);
+	drm_dbg_driver(crtc->dev, "requested clock %dkHz, adjusted clock %dkHz\n",
+		       mode->clock, adjusted_mode->clock);
 
 	return true;
 }
@@ -934,20 +943,20 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	if (!pm_runtime_active(ddev->dev)) {
 		ret = pm_runtime_get_sync(ddev->dev);
 		if (ret) {
-			DRM_ERROR("Failed to set mode, cannot get sync\n");
+			drm_err(crtc->dev, "Failed to set mode, cannot get sync\n");
 			return;
 		}
 	}
 
-	DRM_DEBUG_DRIVER("CRTC:%d mode:%s\n", crtc->base.id, mode->name);
-	DRM_DEBUG_DRIVER("Video mode: %dx%d", mode->hdisplay, mode->vdisplay);
-	DRM_DEBUG_DRIVER(" hfp %d hbp %d hsl %d vfp %d vbp %d vsl %d\n",
-			 mode->hsync_start - mode->hdisplay,
-			 mode->htotal - mode->hsync_end,
-			 mode->hsync_end - mode->hsync_start,
-			 mode->vsync_start - mode->vdisplay,
-			 mode->vtotal - mode->vsync_end,
-			 mode->vsync_end - mode->vsync_start);
+	drm_dbg_driver(crtc->dev, "CRTC:%d mode:%s\n", crtc->base.id, mode->name);
+	drm_dbg_driver(crtc->dev, "Video mode: %dx%d", mode->hdisplay, mode->vdisplay);
+	drm_dbg_driver(crtc->dev, " hfp %d hbp %d hsl %d vfp %d vbp %d vsl %d\n",
+		       mode->hsync_start - mode->hdisplay,
+		       mode->htotal - mode->hsync_end,
+		       mode->hsync_end - mode->hsync_start,
+		       mode->vsync_start - mode->vdisplay,
+		       mode->vtotal - mode->vsync_end,
+		       mode->vsync_end - mode->vsync_start);
 
 	/* Convert video timings to ltdc timings */
 	hsync = mode->hsync_end - mode->hsync_start - 1;
@@ -1033,7 +1042,7 @@ static void ltdc_crtc_atomic_flush(struct drm_crtc *crtc,
 	struct drm_device *ddev = crtc->dev;
 	struct drm_pending_vblank_event *event = crtc->state->event;
 
-	DRM_DEBUG_ATOMIC("\n");
+	drm_dbg_atomic(crtc->dev, "\n");
 
 	ltdc_crtc_update_clut(crtc);
 
@@ -1121,7 +1130,7 @@ static int ltdc_crtc_enable_vblank(struct drm_crtc *crtc)
 	struct ltdc_device *ldev = crtc_to_ltdc(crtc);
 	struct drm_crtc_state *state = crtc->state;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(crtc->dev, "\n");
 
 	if (state->enable)
 		regmap_set_bits(ldev->regmap, LTDC_IER, IER_LIE);
@@ -1135,7 +1144,7 @@ static void ltdc_crtc_disable_vblank(struct drm_crtc *crtc)
 {
 	struct ltdc_device *ldev = crtc_to_ltdc(crtc);
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(crtc->dev, "\n");
 	regmap_clear_bits(ldev->regmap, LTDC_IER, IER_LIE);
 }
 
@@ -1144,11 +1153,11 @@ static int ltdc_crtc_set_crc_source(struct drm_crtc *crtc, const char *source)
 	struct ltdc_device *ldev;
 	int ret;
 
-	DRM_DEBUG_DRIVER("\n");
-
 	if (!crtc)
 		return -ENODEV;
 
+	drm_dbg_driver(crtc->dev, "\n");
+
 	ldev = crtc_to_ltdc(crtc);
 
 	if (source && strcmp(source, "auto") == 0) {
@@ -1168,14 +1177,14 @@ static int ltdc_crtc_set_crc_source(struct drm_crtc *crtc, const char *source)
 static int ltdc_crtc_verify_crc_source(struct drm_crtc *crtc,
 				       const char *source, size_t *values_cnt)
 {
-	DRM_DEBUG_DRIVER("\n");
-
 	if (!crtc)
 		return -ENODEV;
 
+	drm_dbg_driver(crtc->dev, "\n");
+
 	if (source && strcmp(source, "auto") != 0) {
-		DRM_DEBUG_DRIVER("Unknown CRC source %s for %s\n",
-				 source, crtc->name);
+		drm_dbg_driver(crtc->dev, "Unknown CRC source %s for %s\n",
+			       source, crtc->name);
 		return -EINVAL;
 	}
 
@@ -1233,7 +1242,7 @@ static int ltdc_plane_atomic_check(struct drm_plane *plane,
 	struct drm_framebuffer *fb = new_plane_state->fb;
 	u32 src_w, src_h;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(plane->dev, "\n");
 
 	if (!fb)
 		return 0;
@@ -1244,7 +1253,7 @@ static int ltdc_plane_atomic_check(struct drm_plane *plane,
 
 	/* Reject scaling */
 	if (src_w != new_plane_state->crtc_w || src_h != new_plane_state->crtc_h) {
-		DRM_DEBUG_DRIVER("Scaling is not supported");
+		drm_dbg_driver(plane->dev, "Scaling is not supported");
 
 		return -EINVAL;
 	}
@@ -1270,7 +1279,7 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
 	enum ltdc_pix_fmt pf;
 
 	if (!newstate->crtc || !fb) {
-		DRM_DEBUG_DRIVER("fb or crtc NULL");
+		drm_dbg_driver(plane->dev, "fb or crtc NULL");
 		return;
 	}
 
@@ -1280,11 +1289,11 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
 	src_w = newstate->src_w >> 16;
 	src_h = newstate->src_h >> 16;
 
-	DRM_DEBUG_DRIVER("plane:%d fb:%d (%dx%d)@(%d,%d) -> (%dx%d)@(%d,%d)\n",
-			 plane->base.id, fb->base.id,
-			 src_w, src_h, src_x, src_y,
-			 newstate->crtc_w, newstate->crtc_h,
-			 newstate->crtc_x, newstate->crtc_y);
+	drm_dbg_driver(plane->dev, "plane:%d fb:%d (%dx%d)@(%d,%d) -> (%dx%d)@(%d,%d)\n",
+		       plane->base.id, fb->base.id,
+		       src_w, src_h, src_x, src_y,
+		       newstate->crtc_w, newstate->crtc_h,
+		       newstate->crtc_x, newstate->crtc_y);
 
 	regmap_read(ldev->regmap, LTDC_BPCR, &bpcr);
 
@@ -1312,8 +1321,8 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
 		val = ltdc_set_flexible_pixel_format(plane, pf);
 
 	if (val == NB_PF) {
-		DRM_ERROR("Pixel format %.4s not supported\n",
-			  (char *)&fb->format->format);
+		drm_err(fb->dev, "Pixel format %.4s not supported\n",
+			(char *)&fb->format->format);
 		val = 0;	/* set by default ARGB 32 bits */
 	}
 	regmap_write_bits(ldev->regmap, LTDC_L1PFCR + lofs, LXPFCR_PF, val);
@@ -1350,7 +1359,7 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
 	if (newstate->rotation & DRM_MODE_REFLECT_Y)
 		paddr += (fb->pitches[0] * (y1 - y0));
 
-	DRM_DEBUG_DRIVER("fb: phys 0x%08x", paddr);
+	drm_dbg_driver(fb->dev, "fb: phys 0x%08x", paddr);
 	regmap_write(ldev->regmap, LTDC_L1CFBAR + lofs, paddr);
 
 	/* Configures the color frame buffer pitch in bytes & line length */
@@ -1517,8 +1526,8 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane,
 		regmap_write_bits(ldev->regmap, LTDC_L1RCR + lofs,
 				  LXRCR_IMR | LXRCR_VBR | LXRCR_GRMSK, LXRCR_VBR);
 
-	DRM_DEBUG_DRIVER("CRTC:%d plane:%d\n",
-			 oldstate->crtc->base.id, plane->base.id);
+	drm_dbg_driver(plane->dev, "CRTC:%d plane:%d\n",
+		       oldstate->crtc->base.id, plane->base.id);
 }
 
 static void ltdc_plane_atomic_print_state(struct drm_printer *p,
@@ -1632,7 +1641,7 @@ static struct drm_plane *ltdc_plane_create(struct drm_device *ddev,
 
 	drm_plane_create_alpha_property(plane);
 
-	DRM_DEBUG_DRIVER("plane:%d created\n", plane->base.id);
+	drm_dbg_driver(plane->dev, "plane:%d created\n", plane->base.id);
 
 	return plane;
 }
@@ -1647,7 +1656,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
 
 	primary = ltdc_plane_create(ddev, DRM_PLANE_TYPE_PRIMARY, 0);
 	if (!primary) {
-		DRM_ERROR("Can not create primary plane\n");
+		drm_err(ddev, "Can not create primary plane\n");
 		return -EINVAL;
 	}
 
@@ -1668,7 +1677,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
 		ret = drmm_crtc_init_with_planes(ddev, crtc, primary, NULL,
 						 &ltdc_crtc_funcs, NULL);
 	if (ret) {
-		DRM_ERROR("Can not initialize CRTC\n");
+		drm_err(ddev, "Can not initialize CRTC\n");
 		return ret;
 	}
 
@@ -1677,13 +1686,13 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
 	drm_mode_crtc_set_gamma_size(crtc, CLUT_SIZE);
 	drm_crtc_enable_color_mgmt(crtc, 0, false, CLUT_SIZE);
 
-	DRM_DEBUG_DRIVER("CRTC:%d created\n", crtc->base.id);
+	drm_dbg_driver(ddev, "CRTC:%d created\n", crtc->base.id);
 
 	/* Add planes. Note : the first layer is used by primary plane */
 	for (i = 1; i < ldev->caps.nb_layers; i++) {
 		overlay = ltdc_plane_create(ddev, DRM_PLANE_TYPE_OVERLAY, i);
 		if (!overlay) {
-			DRM_ERROR("Can not create overlay plane %d\n", i);
+			drm_err(ddev, "Can not create overlay plane %d\n", i);
 			return -ENOMEM;
 		}
 		if (ldev->caps.dynamic_zorder)
@@ -1704,7 +1713,7 @@ static void ltdc_encoder_disable(struct drm_encoder *encoder)
 	struct drm_device *ddev = encoder->dev;
 	struct ltdc_device *ldev = ddev->dev_private;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(encoder->dev, "\n");
 
 	/* Disable LTDC */
 	regmap_clear_bits(ldev->regmap, LTDC_GCR, GCR_LTDCEN);
@@ -1718,7 +1727,7 @@ static void ltdc_encoder_enable(struct drm_encoder *encoder)
 	struct drm_device *ddev = encoder->dev;
 	struct ltdc_device *ldev = ddev->dev_private;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(encoder->dev, "\n");
 
 	/* set fifo underrun threshold register */
 	if (ldev->caps.fifo_threshold)
@@ -1734,7 +1743,7 @@ static void ltdc_encoder_mode_set(struct drm_encoder *encoder,
 {
 	struct drm_device *ddev = encoder->dev;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(encoder->dev, "\n");
 
 	/*
 	 * Set to default state the pinctrl only with DPI type.
@@ -1770,7 +1779,7 @@ static int ltdc_encoder_init(struct drm_device *ddev, struct drm_bridge *bridge)
 	if (ret)
 		return ret;
 
-	DRM_DEBUG_DRIVER("Bridge encoder:%d created\n", encoder->base.id);
+	drm_dbg_driver(encoder->dev, "Bridge encoder:%d created\n", encoder->base.id);
 
 	return 0;
 }
@@ -1779,6 +1788,7 @@ static int ltdc_get_caps(struct drm_device *ddev)
 {
 	struct ltdc_device *ldev = ddev->dev_private;
 	u32 bus_width_log2, lcr, gc2r;
+	const struct ltdc_plat_data *pdata = of_device_get_match_data(ddev->dev);
 
 	/*
 	 * at least 1 layer must be managed & the number of layers
@@ -1794,6 +1804,8 @@ static int ltdc_get_caps(struct drm_device *ddev)
 	ldev->caps.bus_width = 8 << bus_width_log2;
 	regmap_read(ldev->regmap, LTDC_IDR, &ldev->caps.hw_version);
 
+	ldev->caps.pad_max_freq_hz = pdata->pad_max_freq_hz;
+
 	switch (ldev->caps.hw_version) {
 	case HWVER_10200:
 	case HWVER_10300:
@@ -1811,7 +1823,6 @@ static int ltdc_get_caps(struct drm_device *ddev)
 		 * does not work on 2nd layer.
 		 */
 		ldev->caps.non_alpha_only_l1 = true;
-		ldev->caps.pad_max_freq_hz = 90000000;
 		if (ldev->caps.hw_version == HWVER_10200)
 			ldev->caps.pad_max_freq_hz = 65000000;
 		ldev->caps.nb_irq = 2;
@@ -1842,6 +1853,7 @@ static int ltdc_get_caps(struct drm_device *ddev)
 		ldev->caps.fifo_threshold = false;
 		break;
 	case HWVER_40100:
+	case HWVER_40101:
 		ldev->caps.layer_ofs = LAY_OFS_1;
 		ldev->caps.layer_regs = ltdc_layer_regs_a2;
 		ldev->caps.pix_fmt_hw = ltdc_pix_fmt_a2;
@@ -1849,7 +1861,6 @@ static int ltdc_get_caps(struct drm_device *ddev)
 		ldev->caps.pix_fmt_nb = ARRAY_SIZE(ltdc_drm_fmt_a2);
 		ldev->caps.pix_fmt_flex = true;
 		ldev->caps.non_alpha_only_l1 = false;
-		ldev->caps.pad_max_freq_hz = 90000000;
 		ldev->caps.nb_irq = 2;
 		ldev->caps.ycbcr_input = true;
 		ldev->caps.ycbcr_output = true;
@@ -1870,8 +1881,12 @@ void ltdc_suspend(struct drm_device *ddev)
 {
 	struct ltdc_device *ldev = ddev->dev_private;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(ddev, "\n");
 	clk_disable_unprepare(ldev->pixel_clk);
+	if (ldev->bus_clk)
+		clk_disable_unprepare(ldev->bus_clk);
+	if (ldev->lvds_clk)
+		clk_disable_unprepare(ldev->lvds_clk);
 }
 
 int ltdc_resume(struct drm_device *ddev)
@@ -1879,15 +1894,29 @@ int ltdc_resume(struct drm_device *ddev)
 	struct ltdc_device *ldev = ddev->dev_private;
 	int ret;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(ddev, "\n");
 
 	ret = clk_prepare_enable(ldev->pixel_clk);
 	if (ret) {
-		DRM_ERROR("failed to enable pixel clock (%d)\n", ret);
+		drm_err(ddev, "failed to enable pixel clock (%d)\n", ret);
 		return ret;
 	}
 
-	return 0;
+	if (ldev->bus_clk) {
+		ret = clk_prepare_enable(ldev->bus_clk);
+		if (ret) {
+			drm_err(ddev, "failed to enable bus clock (%d)\n", ret);
+			return ret;
+		}
+	}
+
+	if (ldev->lvds_clk) {
+		ret = clk_prepare_enable(ldev->lvds_clk);
+		if (ret)
+			drm_err(ddev, "failed to prepare lvds clock\n");
+	}
+
+	return ret;
 }
 
 int ltdc_load(struct drm_device *ddev)
@@ -1903,7 +1932,7 @@ int ltdc_load(struct drm_device *ddev)
 	int irq, i, nb_endpoints;
 	int ret = -ENODEV;
 
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(ddev, "\n");
 
 	/* Get number of endpoints */
 	nb_endpoints = of_graph_get_endpoint_count(np);
@@ -1913,15 +1942,29 @@ int ltdc_load(struct drm_device *ddev)
 	ldev->pixel_clk = devm_clk_get(dev, "lcd");
 	if (IS_ERR(ldev->pixel_clk)) {
 		if (PTR_ERR(ldev->pixel_clk) != -EPROBE_DEFER)
-			DRM_ERROR("Unable to get lcd clock\n");
+			drm_err(ddev, "Unable to get lcd clock\n");
 		return PTR_ERR(ldev->pixel_clk);
 	}
 
 	if (clk_prepare_enable(ldev->pixel_clk)) {
-		DRM_ERROR("Unable to prepare pixel clock\n");
+		drm_err(ddev, "Unable to prepare pixel clock\n");
 		return -ENODEV;
 	}
 
+	if (of_device_is_compatible(np, "st,stm32mp251-ltdc") ||
+	    of_device_is_compatible(np, "st,stm32mp255-ltdc")) {
+		ldev->bus_clk = devm_clk_get(dev, "bus");
+		if (IS_ERR(ldev->bus_clk))
+			return dev_err_probe(dev, PTR_ERR(ldev->bus_clk),
+					     "Unable to get bus clock\n");
+
+		ret = clk_prepare_enable(ldev->bus_clk);
+		if (ret) {
+			drm_err(ddev, "Unable to prepare bus clock\n");
+			return ret;
+		}
+	}
+
 	/* Get endpoints if any */
 	for (i = 0; i < nb_endpoints; i++) {
 		ret = drm_of_find_panel_or_bridge(np, 0, i, &panel, &bridge);
@@ -1939,7 +1982,7 @@ int ltdc_load(struct drm_device *ddev)
 		if (panel) {
 			bridge = drmm_panel_bridge_add(ddev, panel);
 			if (IS_ERR(bridge)) {
-				DRM_ERROR("panel-bridge endpoint %d\n", i);
+				drm_err(ddev, "panel-bridge endpoint %d\n", i);
 				ret = PTR_ERR(bridge);
 				goto err;
 			}
@@ -1949,12 +1992,16 @@ int ltdc_load(struct drm_device *ddev)
 			ret = ltdc_encoder_init(ddev, bridge);
 			if (ret) {
 				if (ret != -EPROBE_DEFER)
-					DRM_ERROR("init encoder endpoint %d\n", i);
+					drm_err(ddev, "init encoder endpoint %d\n", i);
 				goto err;
 			}
 		}
 	}
 
+	ldev->lvds_clk = devm_clk_get(dev, "lvds");
+	if (IS_ERR(ldev->lvds_clk))
+		ldev->lvds_clk = NULL;
+
 	rstc = devm_reset_control_get_exclusive(dev, NULL);
 
 	mutex_init(&ldev->err_lock);
@@ -1967,29 +2014,29 @@ int ltdc_load(struct drm_device *ddev)
 
 	ldev->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(ldev->regs)) {
-		DRM_ERROR("Unable to get ltdc registers\n");
+		drm_err(ddev, "Unable to get ltdc registers\n");
 		ret = PTR_ERR(ldev->regs);
 		goto err;
 	}
 
 	ldev->regmap = devm_regmap_init_mmio(&pdev->dev, ldev->regs, &stm32_ltdc_regmap_cfg);
 	if (IS_ERR(ldev->regmap)) {
-		DRM_ERROR("Unable to regmap ltdc registers\n");
+		drm_err(ddev, "Unable to regmap ltdc registers\n");
 		ret = PTR_ERR(ldev->regmap);
 		goto err;
 	}
 
 	ret = ltdc_get_caps(ddev);
 	if (ret) {
-		DRM_ERROR("hardware identifier (0x%08x) not supported!\n",
-			  ldev->caps.hw_version);
+		drm_err(ddev, "hardware identifier (0x%08x) not supported!\n",
+			ldev->caps.hw_version);
 		goto err;
 	}
 
 	/* Disable all interrupts */
 	regmap_clear_bits(ldev->regmap, LTDC_IER, IER_MASK);
 
-	DRM_DEBUG_DRIVER("ltdc hw version 0x%08x\n", ldev->caps.hw_version);
+	drm_dbg_driver(ddev, "ltdc hw version 0x%08x\n", ldev->caps.hw_version);
 
 	/* initialize default value for fifo underrun threshold & clear interrupt error counters */
 	ldev->transfer_err = 0;
@@ -2008,32 +2055,35 @@ int ltdc_load(struct drm_device *ddev)
 						ltdc_irq_thread, IRQF_ONESHOT,
 						dev_name(dev), ddev);
 		if (ret) {
-			DRM_ERROR("Failed to register LTDC interrupt\n");
+			drm_err(ddev, "Failed to register LTDC interrupt\n");
 			goto err;
 		}
 	}
 
 	crtc = drmm_kzalloc(ddev, sizeof(*crtc), GFP_KERNEL);
 	if (!crtc) {
-		DRM_ERROR("Failed to allocate crtc\n");
+		drm_err(ddev, "Failed to allocate crtc\n");
 		ret = -ENOMEM;
 		goto err;
 	}
 
 	ret = ltdc_crtc_init(ddev, crtc);
 	if (ret) {
-		DRM_ERROR("Failed to init crtc\n");
+		drm_err(ddev, "Failed to init crtc\n");
 		goto err;
 	}
 
 	ret = drm_vblank_init(ddev, NB_CRTC);
 	if (ret) {
-		DRM_ERROR("Failed calling drm_vblank_init()\n");
+		drm_err(ddev, "Failed calling drm_vblank_init()\n");
 		goto err;
 	}
 
 	clk_disable_unprepare(ldev->pixel_clk);
 
+	if (ldev->bus_clk)
+		clk_disable_unprepare(ldev->bus_clk);
+
 	pinctrl_pm_select_sleep_state(ddev->dev);
 
 	pm_runtime_enable(ddev->dev);
@@ -2042,12 +2092,15 @@ int ltdc_load(struct drm_device *ddev)
 err:
 	clk_disable_unprepare(ldev->pixel_clk);
 
+	if (ldev->bus_clk)
+		clk_disable_unprepare(ldev->bus_clk);
+
 	return ret;
 }
 
 void ltdc_unload(struct drm_device *ddev)
 {
-	DRM_DEBUG_DRIVER("\n");
+	drm_dbg_driver(ddev, "\n");
 
 	pm_runtime_disable(ddev->dev);
 }