[PATCH 6.6 216/261] drm: renesas: Move RZ/G2L MIPI DSI driver to rz-du

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

[ Upstream commit 1b5dfd1881dbe303536d4167500b94549ff2f6a7 ]

All the RZ/G2L DU specific components are located under the rz-du folder,
so it makes sense to move the RZ/G2L MIPI DSI driver there instead of
keeping it in the rcar-du folder. This change improves the organization
and modularity of the driver configuration by grouping related settings together.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240625123244.200533-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Stable-dep-of: 7cbba8a8ba02 ("drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/renesas/Kconfig                           | 1 +
 drivers/gpu/drm/renesas/Makefile                          | 1 +
 drivers/gpu/drm/renesas/rcar-du/Kconfig                   | 8 --------
 drivers/gpu/drm/renesas/rcar-du/Makefile                  | 2 --
 drivers/gpu/drm/renesas/rz-du/Kconfig                     | 8 ++++++++
 drivers/gpu/drm/renesas/rz-du/Makefile                    | 3 +++
 .../gpu/drm/renesas/{rcar-du => rz-du}/rzg2l_mipi_dsi.c   | 0
 .../drm/renesas/{rcar-du => rz-du}/rzg2l_mipi_dsi_regs.h  | 0
 drivers/gpu/drm/renesas/Kconfig                       |    1 
 drivers/gpu/drm/renesas/Makefile                      |    1 
 drivers/gpu/drm/renesas/rcar-du/Kconfig               |    8 
 drivers/gpu/drm/renesas/rcar-du/Makefile              |    2 
 drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi.c      |  816 ------------------
 drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi_regs.h |  151 ---
 drivers/gpu/drm/renesas/rz-du/Kconfig                 |    8 
 drivers/gpu/drm/renesas/rz-du/Makefile                |    3 
 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c        |  816 ++++++++++++++++++
 drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi_regs.h   |  151 +++
 10 files changed, 980 insertions(+), 977 deletions(-)
 create mode 100644 drivers/gpu/drm/renesas/rz-du/Kconfig
 create mode 100644 drivers/gpu/drm/renesas/rz-du/Makefile
 rename drivers/gpu/drm/renesas/{rcar-du => rz-du}/rzg2l_mipi_dsi.c (100%)
 rename drivers/gpu/drm/renesas/{rcar-du => rz-du}/rzg2l_mipi_dsi_regs.h (100%)

--- a/drivers/gpu/drm/renesas/Kconfig
+++ b/drivers/gpu/drm/renesas/Kconfig
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 source "drivers/gpu/drm/renesas/rcar-du/Kconfig"
+source "drivers/gpu/drm/renesas/rz-du/Kconfig"
 source "drivers/gpu/drm/renesas/shmobile/Kconfig"
--- a/drivers/gpu/drm/renesas/Makefile
+++ b/drivers/gpu/drm/renesas/Makefile
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
 obj-y += rcar-du/
+obj-y += rz-du/
 obj-$(CONFIG_DRM_SHMOBILE) += shmobile/
--- a/drivers/gpu/drm/renesas/rcar-du/Kconfig
+++ b/drivers/gpu/drm/renesas/rcar-du/Kconfig
@@ -60,14 +60,6 @@ config DRM_RCAR_MIPI_DSI
 	select DRM_MIPI_DSI
 	select RESET_CONTROLLER
 
-config DRM_RZG2L_MIPI_DSI
-	tristate "RZ/G2L MIPI DSI Encoder Support"
-	depends on DRM && DRM_BRIDGE && OF
-	depends on ARCH_RENESAS || COMPILE_TEST
-	select DRM_MIPI_DSI
-	help
-	  Enable support for the RZ/G2L Display Unit embedded MIPI DSI encoders.
-
 config DRM_RCAR_VSP
 	bool "R-Car DU VSP Compositor Support" if ARM
 	default y if ARM64
--- a/drivers/gpu/drm/renesas/rcar-du/Makefile
+++ b/drivers/gpu/drm/renesas/rcar-du/Makefile
@@ -14,5 +14,3 @@ obj-$(CONFIG_DRM_RCAR_DU)		+= rcar-du-dr
 obj-$(CONFIG_DRM_RCAR_DW_HDMI)		+= rcar_dw_hdmi.o
 obj-$(CONFIG_DRM_RCAR_LVDS)		+= rcar_lvds.o
 obj-$(CONFIG_DRM_RCAR_MIPI_DSI)		+= rcar_mipi_dsi.o
-
-obj-$(CONFIG_DRM_RZG2L_MIPI_DSI)	+= rzg2l_mipi_dsi.o
--- a/drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi.c
+++ /dev/null
@@ -1,816 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * RZ/G2L MIPI DSI Encoder Driver
- *
- * Copyright (C) 2022 Renesas Electronics Corporation
- */
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/iopoll.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_graph.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/reset.h>
-#include <linux/slab.h>
-
-#include <drm/drm_atomic.h>
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_bridge.h>
-#include <drm/drm_mipi_dsi.h>
-#include <drm/drm_of.h>
-#include <drm/drm_panel.h>
-#include <drm/drm_probe_helper.h>
-
-#include "rzg2l_mipi_dsi_regs.h"
-
-struct rzg2l_mipi_dsi {
-	struct device *dev;
-	void __iomem *mmio;
-
-	struct reset_control *rstc;
-	struct reset_control *arstc;
-	struct reset_control *prstc;
-
-	struct mipi_dsi_host host;
-	struct drm_bridge bridge;
-	struct drm_bridge *next_bridge;
-
-	struct clk *vclk;
-
-	enum mipi_dsi_pixel_format format;
-	unsigned int num_data_lanes;
-	unsigned int lanes;
-	unsigned long mode_flags;
-};
-
-static inline struct rzg2l_mipi_dsi *
-bridge_to_rzg2l_mipi_dsi(struct drm_bridge *bridge)
-{
-	return container_of(bridge, struct rzg2l_mipi_dsi, bridge);
-}
-
-static inline struct rzg2l_mipi_dsi *
-host_to_rzg2l_mipi_dsi(struct mipi_dsi_host *host)
-{
-	return container_of(host, struct rzg2l_mipi_dsi, host);
-}
-
-struct rzg2l_mipi_dsi_timings {
-	unsigned long hsfreq_max;
-	u32 t_init;
-	u32 tclk_prepare;
-	u32 ths_prepare;
-	u32 tclk_zero;
-	u32 tclk_pre;
-	u32 tclk_post;
-	u32 tclk_trail;
-	u32 ths_zero;
-	u32 ths_trail;
-	u32 ths_exit;
-	u32 tlpx;
-};
-
-static const struct rzg2l_mipi_dsi_timings rzg2l_mipi_dsi_global_timings[] = {
-	{
-		.hsfreq_max = 80000,
-		.t_init = 79801,
-		.tclk_prepare = 8,
-		.ths_prepare = 13,
-		.tclk_zero = 33,
-		.tclk_pre = 24,
-		.tclk_post = 94,
-		.tclk_trail = 10,
-		.ths_zero = 23,
-		.ths_trail = 17,
-		.ths_exit = 13,
-		.tlpx = 6,
-	},
-	{
-		.hsfreq_max = 125000,
-		.t_init = 79801,
-		.tclk_prepare = 8,
-		.ths_prepare = 12,
-		.tclk_zero = 33,
-		.tclk_pre = 15,
-		.tclk_post = 94,
-		.tclk_trail = 10,
-		.ths_zero = 23,
-		.ths_trail = 17,
-		.ths_exit = 13,
-		.tlpx = 6,
-	},
-	{
-		.hsfreq_max = 250000,
-		.t_init = 79801,
-		.tclk_prepare = 8,
-		.ths_prepare = 12,
-		.tclk_zero = 33,
-		.tclk_pre = 13,
-		.tclk_post = 94,
-		.tclk_trail = 10,
-		.ths_zero = 23,
-		.ths_trail = 16,
-		.ths_exit = 13,
-		.tlpx = 6,
-	},
-	{
-		.hsfreq_max = 360000,
-		.t_init = 79801,
-		.tclk_prepare = 8,
-		.ths_prepare = 10,
-		.tclk_zero = 33,
-		.tclk_pre = 4,
-		.tclk_post = 35,
-		.tclk_trail = 7,
-		.ths_zero = 16,
-		.ths_trail = 9,
-		.ths_exit = 13,
-		.tlpx = 6,
-	},
-	{
-		.hsfreq_max = 720000,
-		.t_init = 79801,
-		.tclk_prepare = 8,
-		.ths_prepare = 9,
-		.tclk_zero = 33,
-		.tclk_pre = 4,
-		.tclk_post = 35,
-		.tclk_trail = 7,
-		.ths_zero = 16,
-		.ths_trail = 9,
-		.ths_exit = 13,
-		.tlpx = 6,
-	},
-	{
-		.hsfreq_max = 1500000,
-		.t_init = 79801,
-		.tclk_prepare = 8,
-		.ths_prepare = 9,
-		.tclk_zero = 33,
-		.tclk_pre = 4,
-		.tclk_post = 35,
-		.tclk_trail = 7,
-		.ths_zero = 16,
-		.ths_trail = 9,
-		.ths_exit = 13,
-		.tlpx = 6,
-	},
-};
-
-static void rzg2l_mipi_dsi_phy_write(struct rzg2l_mipi_dsi *dsi, u32 reg, u32 data)
-{
-	iowrite32(data, dsi->mmio + reg);
-}
-
-static void rzg2l_mipi_dsi_link_write(struct rzg2l_mipi_dsi *dsi, u32 reg, u32 data)
-{
-	iowrite32(data, dsi->mmio + LINK_REG_OFFSET + reg);
-}
-
-static u32 rzg2l_mipi_dsi_phy_read(struct rzg2l_mipi_dsi *dsi, u32 reg)
-{
-	return ioread32(dsi->mmio + reg);
-}
-
-static u32 rzg2l_mipi_dsi_link_read(struct rzg2l_mipi_dsi *dsi, u32 reg)
-{
-	return ioread32(dsi->mmio + LINK_REG_OFFSET + reg);
-}
-
-/* -----------------------------------------------------------------------------
- * Hardware Setup
- */
-
-static int rzg2l_mipi_dsi_dphy_init(struct rzg2l_mipi_dsi *dsi,
-				    unsigned long hsfreq)
-{
-	const struct rzg2l_mipi_dsi_timings *dphy_timings;
-	unsigned int i;
-	u32 dphyctrl0;
-	u32 dphytim0;
-	u32 dphytim1;
-	u32 dphytim2;
-	u32 dphytim3;
-	int ret;
-
-	/* All DSI global operation timings are set with recommended setting */
-	for (i = 0; i < ARRAY_SIZE(rzg2l_mipi_dsi_global_timings); ++i) {
-		dphy_timings = &rzg2l_mipi_dsi_global_timings[i];
-		if (hsfreq <= dphy_timings->hsfreq_max)
-			break;
-	}
-
-	/* Initializing DPHY before accessing LINK */
-	dphyctrl0 = DSIDPHYCTRL0_CAL_EN_HSRX_OFS | DSIDPHYCTRL0_CMN_MASTER_EN |
-		    DSIDPHYCTRL0_RE_VDD_DETVCCQLV18 | DSIDPHYCTRL0_EN_BGR;
-
-	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYCTRL0, dphyctrl0);
-	usleep_range(20, 30);
-
-	dphyctrl0 |= DSIDPHYCTRL0_EN_LDO1200;
-	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYCTRL0, dphyctrl0);
-	usleep_range(10, 20);
-
-	dphytim0 = DSIDPHYTIM0_TCLK_MISS(0) |
-		   DSIDPHYTIM0_T_INIT(dphy_timings->t_init);
-	dphytim1 = DSIDPHYTIM1_THS_PREPARE(dphy_timings->ths_prepare) |
-		   DSIDPHYTIM1_TCLK_PREPARE(dphy_timings->tclk_prepare) |
-		   DSIDPHYTIM1_THS_SETTLE(0) |
-		   DSIDPHYTIM1_TCLK_SETTLE(0);
-	dphytim2 = DSIDPHYTIM2_TCLK_TRAIL(dphy_timings->tclk_trail) |
-		   DSIDPHYTIM2_TCLK_POST(dphy_timings->tclk_post) |
-		   DSIDPHYTIM2_TCLK_PRE(dphy_timings->tclk_pre) |
-		   DSIDPHYTIM2_TCLK_ZERO(dphy_timings->tclk_zero);
-	dphytim3 = DSIDPHYTIM3_TLPX(dphy_timings->tlpx) |
-		   DSIDPHYTIM3_THS_EXIT(dphy_timings->ths_exit) |
-		   DSIDPHYTIM3_THS_TRAIL(dphy_timings->ths_trail) |
-		   DSIDPHYTIM3_THS_ZERO(dphy_timings->ths_zero);
-
-	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM0, dphytim0);
-	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM1, dphytim1);
-	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM2, dphytim2);
-	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM3, dphytim3);
-
-	ret = reset_control_deassert(dsi->rstc);
-	if (ret < 0)
-		return ret;
-
-	udelay(1);
-
-	return 0;
-}
-
-static void rzg2l_mipi_dsi_dphy_exit(struct rzg2l_mipi_dsi *dsi)
-{
-	u32 dphyctrl0;
-
-	dphyctrl0 = rzg2l_mipi_dsi_phy_read(dsi, DSIDPHYCTRL0);
-
-	dphyctrl0 &= ~(DSIDPHYCTRL0_EN_LDO1200 | DSIDPHYCTRL0_EN_BGR);
-	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYCTRL0, dphyctrl0);
-
-	reset_control_assert(dsi->rstc);
-}
-
-static int rzg2l_mipi_dsi_startup(struct rzg2l_mipi_dsi *dsi,
-				  const struct drm_display_mode *mode)
-{
-	unsigned long hsfreq;
-	unsigned int bpp;
-	u32 txsetr;
-	u32 clstptsetr;
-	u32 lptrnstsetr;
-	u32 clkkpt;
-	u32 clkbfht;
-	u32 clkstpt;
-	u32 golpbkt;
-	int ret;
-
-	/*
-	 * Relationship between hsclk and vclk must follow
-	 * vclk * bpp = hsclk * 8 * lanes
-	 * where vclk: video clock (Hz)
-	 *       bpp: video pixel bit depth
-	 *       hsclk: DSI HS Byte clock frequency (Hz)
-	 *       lanes: number of data lanes
-	 *
-	 * hsclk(bit) = hsclk(byte) * 8
-	 */
-	bpp = mipi_dsi_pixel_format_to_bpp(dsi->format);
-	hsfreq = (mode->clock * bpp * 8) / (8 * dsi->lanes);
-
-	ret = pm_runtime_resume_and_get(dsi->dev);
-	if (ret < 0)
-		return ret;
-
-	clk_set_rate(dsi->vclk, mode->clock * 1000);
-
-	ret = rzg2l_mipi_dsi_dphy_init(dsi, hsfreq);
-	if (ret < 0)
-		goto err_phy;
-
-	/* Enable Data lanes and Clock lanes */
-	txsetr = TXSETR_DLEN | TXSETR_NUMLANEUSE(dsi->lanes - 1) | TXSETR_CLEN;
-	rzg2l_mipi_dsi_link_write(dsi, TXSETR, txsetr);
-
-	/*
-	 * Global timings characteristic depends on high speed Clock Frequency
-	 * Currently MIPI DSI-IF just supports maximum FHD@60 with:
-	 * - videoclock = 148.5 (MHz)
-	 * - bpp: maximum 24bpp
-	 * - data lanes: maximum 4 lanes
-	 * Therefore maximum hsclk will be 891 Mbps.
-	 */
-	if (hsfreq > 445500) {
-		clkkpt = 12;
-		clkbfht = 15;
-		clkstpt = 48;
-		golpbkt = 75;
-	} else if (hsfreq > 250000) {
-		clkkpt = 7;
-		clkbfht = 8;
-		clkstpt = 27;
-		golpbkt = 40;
-	} else {
-		clkkpt = 8;
-		clkbfht = 6;
-		clkstpt = 24;
-		golpbkt = 29;
-	}
-
-	clstptsetr = CLSTPTSETR_CLKKPT(clkkpt) | CLSTPTSETR_CLKBFHT(clkbfht) |
-		     CLSTPTSETR_CLKSTPT(clkstpt);
-	rzg2l_mipi_dsi_link_write(dsi, CLSTPTSETR, clstptsetr);
-
-	lptrnstsetr = LPTRNSTSETR_GOLPBKT(golpbkt);
-	rzg2l_mipi_dsi_link_write(dsi, LPTRNSTSETR, lptrnstsetr);
-
-	return 0;
-
-err_phy:
-	rzg2l_mipi_dsi_dphy_exit(dsi);
-	pm_runtime_put(dsi->dev);
-
-	return ret;
-}
-
-static void rzg2l_mipi_dsi_stop(struct rzg2l_mipi_dsi *dsi)
-{
-	rzg2l_mipi_dsi_dphy_exit(dsi);
-	pm_runtime_put(dsi->dev);
-}
-
-static void rzg2l_mipi_dsi_set_display_timing(struct rzg2l_mipi_dsi *dsi,
-					      const struct drm_display_mode *mode)
-{
-	u32 vich1ppsetr;
-	u32 vich1vssetr;
-	u32 vich1vpsetr;
-	u32 vich1hssetr;
-	u32 vich1hpsetr;
-	int dsi_format;
-	u32 delay[2];
-	u8 index;
-
-	/* Configuration for Pixel Packet */
-	dsi_format = mipi_dsi_pixel_format_to_bpp(dsi->format);
-	switch (dsi_format) {
-	case 24:
-		vich1ppsetr = VICH1PPSETR_DT_RGB24;
-		break;
-	case 18:
-		vich1ppsetr = VICH1PPSETR_DT_RGB18;
-		break;
-	}
-
-	if ((dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) &&
-	    !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST))
-		vich1ppsetr |= VICH1PPSETR_TXESYNC_PULSE;
-
-	rzg2l_mipi_dsi_link_write(dsi, VICH1PPSETR, vich1ppsetr);
-
-	/* Configuration for Video Parameters */
-	vich1vssetr = VICH1VSSETR_VACTIVE(mode->vdisplay) |
-		      VICH1VSSETR_VSA(mode->vsync_end - mode->vsync_start);
-	vich1vssetr |= (mode->flags & DRM_MODE_FLAG_PVSYNC) ?
-			VICH1VSSETR_VSPOL_HIGH : VICH1VSSETR_VSPOL_LOW;
-
-	vich1vpsetr = VICH1VPSETR_VFP(mode->vsync_start - mode->vdisplay) |
-		      VICH1VPSETR_VBP(mode->vtotal - mode->vsync_end);
-
-	vich1hssetr = VICH1HSSETR_HACTIVE(mode->hdisplay) |
-		      VICH1HSSETR_HSA(mode->hsync_end - mode->hsync_start);
-	vich1hssetr |= (mode->flags & DRM_MODE_FLAG_PHSYNC) ?
-			VICH1HSSETR_HSPOL_HIGH : VICH1HSSETR_HSPOL_LOW;
-
-	vich1hpsetr = VICH1HPSETR_HFP(mode->hsync_start - mode->hdisplay) |
-		      VICH1HPSETR_HBP(mode->htotal - mode->hsync_end);
-
-	rzg2l_mipi_dsi_link_write(dsi, VICH1VSSETR, vich1vssetr);
-	rzg2l_mipi_dsi_link_write(dsi, VICH1VPSETR, vich1vpsetr);
-	rzg2l_mipi_dsi_link_write(dsi, VICH1HSSETR, vich1hssetr);
-	rzg2l_mipi_dsi_link_write(dsi, VICH1HPSETR, vich1hpsetr);
-
-	/*
-	 * Configuration for Delay Value
-	 * Delay value based on 2 ranges of video clock.
-	 * 74.25MHz is videoclock of HD@60p or FHD@30p
-	 */
-	if (mode->clock > 74250) {
-		delay[0] = 231;
-		delay[1] = 216;
-	} else {
-		delay[0] = 220;
-		delay[1] = 212;
-	}
-
-	if (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)
-		index = 0;
-	else
-		index = 1;
-
-	rzg2l_mipi_dsi_link_write(dsi, VICH1SET1R,
-				  VICH1SET1R_DLY(delay[index]));
-}
-
-static int rzg2l_mipi_dsi_start_hs_clock(struct rzg2l_mipi_dsi *dsi)
-{
-	bool is_clk_cont;
-	u32 hsclksetr;
-	u32 status;
-	int ret;
-
-	is_clk_cont = !(dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS);
-
-	/* Start HS clock */
-	hsclksetr = HSCLKSETR_HSCLKRUN_HS | (is_clk_cont ?
-					     HSCLKSETR_HSCLKMODE_CONT :
-					     HSCLKSETR_HSCLKMODE_NON_CONT);
-	rzg2l_mipi_dsi_link_write(dsi, HSCLKSETR, hsclksetr);
-
-	if (is_clk_cont) {
-		ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
-					status & PLSR_CLLP2HS,
-					2000, 20000, false, dsi, PLSR);
-		if (ret < 0) {
-			dev_err(dsi->dev, "failed to start HS clock\n");
-			return ret;
-		}
-	}
-
-	dev_dbg(dsi->dev, "Start High Speed Clock with %s clock mode",
-		is_clk_cont ? "continuous" : "non-continuous");
-
-	return 0;
-}
-
-static int rzg2l_mipi_dsi_stop_hs_clock(struct rzg2l_mipi_dsi *dsi)
-{
-	bool is_clk_cont;
-	u32 status;
-	int ret;
-
-	is_clk_cont = !(dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS);
-
-	/* Stop HS clock */
-	rzg2l_mipi_dsi_link_write(dsi, HSCLKSETR,
-				  is_clk_cont ? HSCLKSETR_HSCLKMODE_CONT :
-				  HSCLKSETR_HSCLKMODE_NON_CONT);
-
-	if (is_clk_cont) {
-		ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
-					status & PLSR_CLHS2LP,
-					2000, 20000, false, dsi, PLSR);
-		if (ret < 0) {
-			dev_err(dsi->dev, "failed to stop HS clock\n");
-			return ret;
-		}
-	}
-
-	return 0;
-}
-
-static int rzg2l_mipi_dsi_start_video(struct rzg2l_mipi_dsi *dsi)
-{
-	u32 vich1set0r;
-	u32 status;
-	int ret;
-
-	/* Configuration for Blanking sequence and start video input*/
-	vich1set0r = VICH1SET0R_HFPNOLP | VICH1SET0R_HBPNOLP |
-		     VICH1SET0R_HSANOLP | VICH1SET0R_VSTART;
-	rzg2l_mipi_dsi_link_write(dsi, VICH1SET0R, vich1set0r);
-
-	ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
-				status & VICH1SR_VIRDY,
-				2000, 20000, false, dsi, VICH1SR);
-	if (ret < 0)
-		dev_err(dsi->dev, "Failed to start video signal input\n");
-
-	return ret;
-}
-
-static int rzg2l_mipi_dsi_stop_video(struct rzg2l_mipi_dsi *dsi)
-{
-	u32 status;
-	int ret;
-
-	rzg2l_mipi_dsi_link_write(dsi, VICH1SET0R, VICH1SET0R_VSTPAFT);
-	ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
-				(status & VICH1SR_STOP) && (!(status & VICH1SR_RUNNING)),
-				2000, 20000, false, dsi, VICH1SR);
-	if (ret < 0)
-		goto err;
-
-	ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
-				!(status & LINKSR_HSBUSY),
-				2000, 20000, false, dsi, LINKSR);
-	if (ret < 0)
-		goto err;
-
-	return 0;
-
-err:
-	dev_err(dsi->dev, "Failed to stop video signal input\n");
-	return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * Bridge
- */
-
-static int rzg2l_mipi_dsi_attach(struct drm_bridge *bridge,
-				 enum drm_bridge_attach_flags flags)
-{
-	struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
-
-	return drm_bridge_attach(bridge->encoder, dsi->next_bridge, bridge,
-				 flags);
-}
-
-static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge,
-					 struct drm_bridge_state *old_bridge_state)
-{
-	struct drm_atomic_state *state = old_bridge_state->base.state;
-	struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
-	const struct drm_display_mode *mode;
-	struct drm_connector *connector;
-	struct drm_crtc *crtc;
-	int ret;
-
-	connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
-	crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
-	mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
-
-	ret = rzg2l_mipi_dsi_startup(dsi, mode);
-	if (ret < 0)
-		return;
-
-	rzg2l_mipi_dsi_set_display_timing(dsi, mode);
-
-	ret = rzg2l_mipi_dsi_start_hs_clock(dsi);
-	if (ret < 0)
-		goto err_stop;
-
-	ret = rzg2l_mipi_dsi_start_video(dsi);
-	if (ret < 0)
-		goto err_stop_clock;
-
-	return;
-
-err_stop_clock:
-	rzg2l_mipi_dsi_stop_hs_clock(dsi);
-err_stop:
-	rzg2l_mipi_dsi_stop(dsi);
-}
-
-static void rzg2l_mipi_dsi_atomic_disable(struct drm_bridge *bridge,
-					  struct drm_bridge_state *old_bridge_state)
-{
-	struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
-
-	rzg2l_mipi_dsi_stop_video(dsi);
-	rzg2l_mipi_dsi_stop_hs_clock(dsi);
-	rzg2l_mipi_dsi_stop(dsi);
-}
-
-static enum drm_mode_status
-rzg2l_mipi_dsi_bridge_mode_valid(struct drm_bridge *bridge,
-				 const struct drm_display_info *info,
-				 const struct drm_display_mode *mode)
-{
-	if (mode->clock > 148500)
-		return MODE_CLOCK_HIGH;
-
-	if (mode->clock < 5803)
-		return MODE_CLOCK_LOW;
-
-	return MODE_OK;
-}
-
-static const struct drm_bridge_funcs rzg2l_mipi_dsi_bridge_ops = {
-	.attach = rzg2l_mipi_dsi_attach,
-	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
-	.atomic_reset = drm_atomic_helper_bridge_reset,
-	.atomic_enable = rzg2l_mipi_dsi_atomic_enable,
-	.atomic_disable = rzg2l_mipi_dsi_atomic_disable,
-	.mode_valid = rzg2l_mipi_dsi_bridge_mode_valid,
-};
-
-/* -----------------------------------------------------------------------------
- * Host setting
- */
-
-static int rzg2l_mipi_dsi_host_attach(struct mipi_dsi_host *host,
-				      struct mipi_dsi_device *device)
-{
-	struct rzg2l_mipi_dsi *dsi = host_to_rzg2l_mipi_dsi(host);
-	int ret;
-
-	if (device->lanes > dsi->num_data_lanes) {
-		dev_err(dsi->dev,
-			"Number of lines of device (%u) exceeds host (%u)\n",
-			device->lanes, dsi->num_data_lanes);
-		return -EINVAL;
-	}
-
-	switch (mipi_dsi_pixel_format_to_bpp(device->format)) {
-	case 24:
-	case 18:
-		break;
-	default:
-		dev_err(dsi->dev, "Unsupported format 0x%04x\n", device->format);
-		return -EINVAL;
-	}
-
-	dsi->lanes = device->lanes;
-	dsi->format = device->format;
-	dsi->mode_flags = device->mode_flags;
-
-	dsi->next_bridge = devm_drm_of_get_bridge(dsi->dev, dsi->dev->of_node,
-						  1, 0);
-	if (IS_ERR(dsi->next_bridge)) {
-		ret = PTR_ERR(dsi->next_bridge);
-		dev_err(dsi->dev, "failed to get next bridge: %d\n", ret);
-		return ret;
-	}
-
-	drm_bridge_add(&dsi->bridge);
-
-	return 0;
-}
-
-static int rzg2l_mipi_dsi_host_detach(struct mipi_dsi_host *host,
-				      struct mipi_dsi_device *device)
-{
-	struct rzg2l_mipi_dsi *dsi = host_to_rzg2l_mipi_dsi(host);
-
-	drm_bridge_remove(&dsi->bridge);
-
-	return 0;
-}
-
-static const struct mipi_dsi_host_ops rzg2l_mipi_dsi_host_ops = {
-	.attach = rzg2l_mipi_dsi_host_attach,
-	.detach = rzg2l_mipi_dsi_host_detach,
-};
-
-/* -----------------------------------------------------------------------------
- * Power Management
- */
-
-static int __maybe_unused rzg2l_mipi_pm_runtime_suspend(struct device *dev)
-{
-	struct rzg2l_mipi_dsi *dsi = dev_get_drvdata(dev);
-
-	reset_control_assert(dsi->prstc);
-	reset_control_assert(dsi->arstc);
-
-	return 0;
-}
-
-static int __maybe_unused rzg2l_mipi_pm_runtime_resume(struct device *dev)
-{
-	struct rzg2l_mipi_dsi *dsi = dev_get_drvdata(dev);
-	int ret;
-
-	ret = reset_control_deassert(dsi->arstc);
-	if (ret < 0)
-		return ret;
-
-	ret = reset_control_deassert(dsi->prstc);
-	if (ret < 0)
-		reset_control_assert(dsi->arstc);
-
-	return ret;
-}
-
-static const struct dev_pm_ops rzg2l_mipi_pm_ops = {
-	SET_RUNTIME_PM_OPS(rzg2l_mipi_pm_runtime_suspend, rzg2l_mipi_pm_runtime_resume, NULL)
-};
-
-/* -----------------------------------------------------------------------------
- * Probe & Remove
- */
-
-static int rzg2l_mipi_dsi_probe(struct platform_device *pdev)
-{
-	unsigned int num_data_lanes;
-	struct rzg2l_mipi_dsi *dsi;
-	u32 txsetr;
-	int ret;
-
-	dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
-	if (!dsi)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, dsi);
-	dsi->dev = &pdev->dev;
-
-	ret = drm_of_get_data_lanes_count_ep(dsi->dev->of_node, 1, 0, 1, 4);
-	if (ret < 0)
-		return dev_err_probe(dsi->dev, ret,
-				     "missing or invalid data-lanes property\n");
-
-	num_data_lanes = ret;
-
-	dsi->mmio = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(dsi->mmio))
-		return PTR_ERR(dsi->mmio);
-
-	dsi->vclk = devm_clk_get(dsi->dev, "vclk");
-	if (IS_ERR(dsi->vclk))
-		return PTR_ERR(dsi->vclk);
-
-	dsi->rstc = devm_reset_control_get_exclusive(dsi->dev, "rst");
-	if (IS_ERR(dsi->rstc))
-		return dev_err_probe(dsi->dev, PTR_ERR(dsi->rstc),
-				     "failed to get rst\n");
-
-	dsi->arstc = devm_reset_control_get_exclusive(dsi->dev, "arst");
-	if (IS_ERR(dsi->arstc))
-		return dev_err_probe(&pdev->dev, PTR_ERR(dsi->arstc),
-				     "failed to get arst\n");
-
-	dsi->prstc = devm_reset_control_get_exclusive(dsi->dev, "prst");
-	if (IS_ERR(dsi->prstc))
-		return dev_err_probe(dsi->dev, PTR_ERR(dsi->prstc),
-				     "failed to get prst\n");
-
-	platform_set_drvdata(pdev, dsi);
-
-	pm_runtime_enable(dsi->dev);
-
-	ret = pm_runtime_resume_and_get(dsi->dev);
-	if (ret < 0)
-		goto err_pm_disable;
-
-	/*
-	 * TXSETR register can be read only after DPHY init. But during probe
-	 * mode->clock and format are not available. So initialize DPHY with
-	 * timing parameters for 80Mbps.
-	 */
-	ret = rzg2l_mipi_dsi_dphy_init(dsi, 80000);
-	if (ret < 0)
-		goto err_phy;
-
-	txsetr = rzg2l_mipi_dsi_link_read(dsi, TXSETR);
-	dsi->num_data_lanes = min(((txsetr >> 16) & 3) + 1, num_data_lanes);
-	rzg2l_mipi_dsi_dphy_exit(dsi);
-	pm_runtime_put(dsi->dev);
-
-	/* Initialize the DRM bridge. */
-	dsi->bridge.funcs = &rzg2l_mipi_dsi_bridge_ops;
-	dsi->bridge.of_node = dsi->dev->of_node;
-
-	/* Init host device */
-	dsi->host.dev = dsi->dev;
-	dsi->host.ops = &rzg2l_mipi_dsi_host_ops;
-	ret = mipi_dsi_host_register(&dsi->host);
-	if (ret < 0)
-		goto err_pm_disable;
-
-	return 0;
-
-err_phy:
-	rzg2l_mipi_dsi_dphy_exit(dsi);
-	pm_runtime_put(dsi->dev);
-err_pm_disable:
-	pm_runtime_disable(dsi->dev);
-	return ret;
-}
-
-static void rzg2l_mipi_dsi_remove(struct platform_device *pdev)
-{
-	struct rzg2l_mipi_dsi *dsi = platform_get_drvdata(pdev);
-
-	mipi_dsi_host_unregister(&dsi->host);
-	pm_runtime_disable(&pdev->dev);
-}
-
-static const struct of_device_id rzg2l_mipi_dsi_of_table[] = {
-	{ .compatible = "renesas,rzg2l-mipi-dsi" },
-	{ /* sentinel */ }
-};
-
-MODULE_DEVICE_TABLE(of, rzg2l_mipi_dsi_of_table);
-
-static struct platform_driver rzg2l_mipi_dsi_platform_driver = {
-	.probe	= rzg2l_mipi_dsi_probe,
-	.remove_new = rzg2l_mipi_dsi_remove,
-	.driver	= {
-		.name = "rzg2l-mipi-dsi",
-		.pm = &rzg2l_mipi_pm_ops,
-		.of_match_table = rzg2l_mipi_dsi_of_table,
-	},
-};
-
-module_platform_driver(rzg2l_mipi_dsi_platform_driver);
-
-MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>");
-MODULE_DESCRIPTION("Renesas RZ/G2L MIPI DSI Encoder Driver");
-MODULE_LICENSE("GPL");
--- a/drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi_regs.h
+++ /dev/null
@@ -1,151 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * RZ/G2L MIPI DSI Interface Registers Definitions
- *
- * Copyright (C) 2022 Renesas Electronics Corporation
- */
-
-#ifndef __RZG2L_MIPI_DSI_REGS_H__
-#define __RZG2L_MIPI_DSI_REGS_H__
-
-#include <linux/bits.h>
-
-/* DPHY Registers */
-#define DSIDPHYCTRL0			0x00
-#define DSIDPHYCTRL0_CAL_EN_HSRX_OFS	BIT(16)
-#define DSIDPHYCTRL0_CMN_MASTER_EN	BIT(8)
-#define DSIDPHYCTRL0_RE_VDD_DETVCCQLV18	BIT(2)
-#define DSIDPHYCTRL0_EN_LDO1200		BIT(1)
-#define DSIDPHYCTRL0_EN_BGR		BIT(0)
-
-#define DSIDPHYTIM0			0x04
-#define DSIDPHYTIM0_TCLK_MISS(x)	((x) << 24)
-#define DSIDPHYTIM0_T_INIT(x)		((x) << 0)
-
-#define DSIDPHYTIM1			0x08
-#define DSIDPHYTIM1_THS_PREPARE(x)	((x) << 24)
-#define DSIDPHYTIM1_TCLK_PREPARE(x)	((x) << 16)
-#define DSIDPHYTIM1_THS_SETTLE(x)	((x) << 8)
-#define DSIDPHYTIM1_TCLK_SETTLE(x)	((x) << 0)
-
-#define DSIDPHYTIM2			0x0c
-#define DSIDPHYTIM2_TCLK_TRAIL(x)	((x) << 24)
-#define DSIDPHYTIM2_TCLK_POST(x)	((x) << 16)
-#define DSIDPHYTIM2_TCLK_PRE(x)		((x) << 8)
-#define DSIDPHYTIM2_TCLK_ZERO(x)	((x) << 0)
-
-#define DSIDPHYTIM3			0x10
-#define DSIDPHYTIM3_TLPX(x)		((x) << 24)
-#define DSIDPHYTIM3_THS_EXIT(x)		((x) << 16)
-#define DSIDPHYTIM3_THS_TRAIL(x)	((x) << 8)
-#define DSIDPHYTIM3_THS_ZERO(x)		((x) << 0)
-
-/* --------------------------------------------------------*/
-/* Link Registers */
-#define LINK_REG_OFFSET			0x10000
-
-/* Link Status Register */
-#define LINKSR				0x10
-#define LINKSR_LPBUSY			BIT(13)
-#define LINKSR_HSBUSY			BIT(12)
-#define LINKSR_VICHRUN1			BIT(8)
-#define LINKSR_SQCHRUN1			BIT(4)
-#define LINKSR_SQCHRUN0			BIT(0)
-
-/* Tx Set Register */
-#define TXSETR				0x100
-#define TXSETR_NUMLANECAP		(0x3 << 16)
-#define TXSETR_DLEN			(1 << 9)
-#define TXSETR_CLEN			(1 << 8)
-#define TXSETR_NUMLANEUSE(x)		(((x) & 0x3) << 0)
-
-/* HS Clock Set Register */
-#define HSCLKSETR			0x104
-#define HSCLKSETR_HSCLKMODE_CONT	(1 << 1)
-#define HSCLKSETR_HSCLKMODE_NON_CONT	(0 << 1)
-#define HSCLKSETR_HSCLKRUN_HS		(1 << 0)
-#define HSCLKSETR_HSCLKRUN_LP		(0 << 0)
-
-/* Reset Control Register */
-#define RSTCR				0x110
-#define RSTCR_SWRST			BIT(0)
-#define RSTCR_FCETXSTP			BIT(16)
-
-/* Reset Status Register */
-#define RSTSR				0x114
-#define RSTSR_DL0DIR			(1 << 15)
-#define RSTSR_DLSTPST			(0xf << 8)
-#define RSTSR_SWRSTV1			(1 << 4)
-#define RSTSR_SWRSTIB			(1 << 3)
-#define RSTSR_SWRSTAPB			(1 << 2)
-#define RSTSR_SWRSTLP			(1 << 1)
-#define RSTSR_SWRSTHS			(1 << 0)
-
-/* Clock Lane Stop Time Set Register */
-#define CLSTPTSETR			0x314
-#define CLSTPTSETR_CLKKPT(x)		((x) << 24)
-#define CLSTPTSETR_CLKBFHT(x)		((x) << 16)
-#define CLSTPTSETR_CLKSTPT(x)		((x) << 2)
-
-/* LP Transition Time Set Register */
-#define LPTRNSTSETR			0x318
-#define LPTRNSTSETR_GOLPBKT(x)		((x) << 0)
-
-/* Physical Lane Status Register */
-#define PLSR				0x320
-#define PLSR_CLHS2LP			BIT(27)
-#define PLSR_CLLP2HS			BIT(26)
-
-/* Video-Input Channel 1 Set 0 Register */
-#define VICH1SET0R			0x400
-#define VICH1SET0R_VSEN			BIT(12)
-#define VICH1SET0R_HFPNOLP		BIT(10)
-#define VICH1SET0R_HBPNOLP		BIT(9)
-#define VICH1SET0R_HSANOLP		BIT(8)
-#define VICH1SET0R_VSTPAFT		BIT(1)
-#define VICH1SET0R_VSTART		BIT(0)
-
-/* Video-Input Channel 1 Set 1 Register */
-#define VICH1SET1R			0x404
-#define VICH1SET1R_DLY(x)		(((x) & 0xfff) << 2)
-
-/* Video-Input Channel 1 Status Register */
-#define VICH1SR				0x410
-#define VICH1SR_VIRDY			BIT(3)
-#define VICH1SR_RUNNING			BIT(2)
-#define VICH1SR_STOP			BIT(1)
-#define VICH1SR_START			BIT(0)
-
-/* Video-Input Channel 1 Pixel Packet Set Register */
-#define VICH1PPSETR			0x420
-#define VICH1PPSETR_DT_RGB18		(0x1e << 16)
-#define VICH1PPSETR_DT_RGB18_LS		(0x2e << 16)
-#define VICH1PPSETR_DT_RGB24		(0x3e << 16)
-#define VICH1PPSETR_TXESYNC_PULSE	(1 << 15)
-#define VICH1PPSETR_VC(x)		((x) << 22)
-
-/* Video-Input Channel 1 Vertical Size Set Register */
-#define VICH1VSSETR			0x428
-#define VICH1VSSETR_VACTIVE(x)		(((x) & 0x7fff) << 16)
-#define VICH1VSSETR_VSPOL_LOW		(1 << 15)
-#define VICH1VSSETR_VSPOL_HIGH		(0 << 15)
-#define VICH1VSSETR_VSA(x)		(((x) & 0xfff) << 0)
-
-/* Video-Input Channel 1 Vertical Porch Set Register */
-#define VICH1VPSETR			0x42c
-#define VICH1VPSETR_VFP(x)		(((x) & 0x1fff) << 16)
-#define VICH1VPSETR_VBP(x)		(((x) & 0x1fff) << 0)
-
-/* Video-Input Channel 1 Horizontal Size Set Register */
-#define VICH1HSSETR			0x430
-#define VICH1HSSETR_HACTIVE(x)		(((x) & 0x7fff) << 16)
-#define VICH1HSSETR_HSPOL_LOW		(1 << 15)
-#define VICH1HSSETR_HSPOL_HIGH		(0 << 15)
-#define VICH1HSSETR_HSA(x)		(((x) & 0xfff) << 0)
-
-/* Video-Input Channel 1 Horizontal Porch Set Register */
-#define VICH1HPSETR			0x434
-#define VICH1HPSETR_HFP(x)		(((x) & 0x1fff) << 16)
-#define VICH1HPSETR_HBP(x)		(((x) & 0x1fff) << 0)
-
-#endif /* __RZG2L_MIPI_DSI_REGS_H__ */
--- /dev/null
+++ b/drivers/gpu/drm/renesas/rz-du/Kconfig
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+config DRM_RZG2L_MIPI_DSI
+	tristate "RZ/G2L MIPI DSI Encoder Support"
+	depends on DRM && DRM_BRIDGE && OF
+	depends on ARCH_RENESAS || COMPILE_TEST
+	select DRM_MIPI_DSI
+	help
+	  Enable support for the RZ/G2L Display Unit embedded MIPI DSI encoders.
--- /dev/null
+++ b/drivers/gpu/drm/renesas/rz-du/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_DRM_RZG2L_MIPI_DSI)	+= rzg2l_mipi_dsi.o
--- /dev/null
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
@@ -0,0 +1,816 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RZ/G2L MIPI DSI Encoder Driver
+ *
+ * Copyright (C) 2022 Renesas Electronics Corporation
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+#include <linux/slab.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
+
+#include "rzg2l_mipi_dsi_regs.h"
+
+struct rzg2l_mipi_dsi {
+	struct device *dev;
+	void __iomem *mmio;
+
+	struct reset_control *rstc;
+	struct reset_control *arstc;
+	struct reset_control *prstc;
+
+	struct mipi_dsi_host host;
+	struct drm_bridge bridge;
+	struct drm_bridge *next_bridge;
+
+	struct clk *vclk;
+
+	enum mipi_dsi_pixel_format format;
+	unsigned int num_data_lanes;
+	unsigned int lanes;
+	unsigned long mode_flags;
+};
+
+static inline struct rzg2l_mipi_dsi *
+bridge_to_rzg2l_mipi_dsi(struct drm_bridge *bridge)
+{
+	return container_of(bridge, struct rzg2l_mipi_dsi, bridge);
+}
+
+static inline struct rzg2l_mipi_dsi *
+host_to_rzg2l_mipi_dsi(struct mipi_dsi_host *host)
+{
+	return container_of(host, struct rzg2l_mipi_dsi, host);
+}
+
+struct rzg2l_mipi_dsi_timings {
+	unsigned long hsfreq_max;
+	u32 t_init;
+	u32 tclk_prepare;
+	u32 ths_prepare;
+	u32 tclk_zero;
+	u32 tclk_pre;
+	u32 tclk_post;
+	u32 tclk_trail;
+	u32 ths_zero;
+	u32 ths_trail;
+	u32 ths_exit;
+	u32 tlpx;
+};
+
+static const struct rzg2l_mipi_dsi_timings rzg2l_mipi_dsi_global_timings[] = {
+	{
+		.hsfreq_max = 80000,
+		.t_init = 79801,
+		.tclk_prepare = 8,
+		.ths_prepare = 13,
+		.tclk_zero = 33,
+		.tclk_pre = 24,
+		.tclk_post = 94,
+		.tclk_trail = 10,
+		.ths_zero = 23,
+		.ths_trail = 17,
+		.ths_exit = 13,
+		.tlpx = 6,
+	},
+	{
+		.hsfreq_max = 125000,
+		.t_init = 79801,
+		.tclk_prepare = 8,
+		.ths_prepare = 12,
+		.tclk_zero = 33,
+		.tclk_pre = 15,
+		.tclk_post = 94,
+		.tclk_trail = 10,
+		.ths_zero = 23,
+		.ths_trail = 17,
+		.ths_exit = 13,
+		.tlpx = 6,
+	},
+	{
+		.hsfreq_max = 250000,
+		.t_init = 79801,
+		.tclk_prepare = 8,
+		.ths_prepare = 12,
+		.tclk_zero = 33,
+		.tclk_pre = 13,
+		.tclk_post = 94,
+		.tclk_trail = 10,
+		.ths_zero = 23,
+		.ths_trail = 16,
+		.ths_exit = 13,
+		.tlpx = 6,
+	},
+	{
+		.hsfreq_max = 360000,
+		.t_init = 79801,
+		.tclk_prepare = 8,
+		.ths_prepare = 10,
+		.tclk_zero = 33,
+		.tclk_pre = 4,
+		.tclk_post = 35,
+		.tclk_trail = 7,
+		.ths_zero = 16,
+		.ths_trail = 9,
+		.ths_exit = 13,
+		.tlpx = 6,
+	},
+	{
+		.hsfreq_max = 720000,
+		.t_init = 79801,
+		.tclk_prepare = 8,
+		.ths_prepare = 9,
+		.tclk_zero = 33,
+		.tclk_pre = 4,
+		.tclk_post = 35,
+		.tclk_trail = 7,
+		.ths_zero = 16,
+		.ths_trail = 9,
+		.ths_exit = 13,
+		.tlpx = 6,
+	},
+	{
+		.hsfreq_max = 1500000,
+		.t_init = 79801,
+		.tclk_prepare = 8,
+		.ths_prepare = 9,
+		.tclk_zero = 33,
+		.tclk_pre = 4,
+		.tclk_post = 35,
+		.tclk_trail = 7,
+		.ths_zero = 16,
+		.ths_trail = 9,
+		.ths_exit = 13,
+		.tlpx = 6,
+	},
+};
+
+static void rzg2l_mipi_dsi_phy_write(struct rzg2l_mipi_dsi *dsi, u32 reg, u32 data)
+{
+	iowrite32(data, dsi->mmio + reg);
+}
+
+static void rzg2l_mipi_dsi_link_write(struct rzg2l_mipi_dsi *dsi, u32 reg, u32 data)
+{
+	iowrite32(data, dsi->mmio + LINK_REG_OFFSET + reg);
+}
+
+static u32 rzg2l_mipi_dsi_phy_read(struct rzg2l_mipi_dsi *dsi, u32 reg)
+{
+	return ioread32(dsi->mmio + reg);
+}
+
+static u32 rzg2l_mipi_dsi_link_read(struct rzg2l_mipi_dsi *dsi, u32 reg)
+{
+	return ioread32(dsi->mmio + LINK_REG_OFFSET + reg);
+}
+
+/* -----------------------------------------------------------------------------
+ * Hardware Setup
+ */
+
+static int rzg2l_mipi_dsi_dphy_init(struct rzg2l_mipi_dsi *dsi,
+				    unsigned long hsfreq)
+{
+	const struct rzg2l_mipi_dsi_timings *dphy_timings;
+	unsigned int i;
+	u32 dphyctrl0;
+	u32 dphytim0;
+	u32 dphytim1;
+	u32 dphytim2;
+	u32 dphytim3;
+	int ret;
+
+	/* All DSI global operation timings are set with recommended setting */
+	for (i = 0; i < ARRAY_SIZE(rzg2l_mipi_dsi_global_timings); ++i) {
+		dphy_timings = &rzg2l_mipi_dsi_global_timings[i];
+		if (hsfreq <= dphy_timings->hsfreq_max)
+			break;
+	}
+
+	/* Initializing DPHY before accessing LINK */
+	dphyctrl0 = DSIDPHYCTRL0_CAL_EN_HSRX_OFS | DSIDPHYCTRL0_CMN_MASTER_EN |
+		    DSIDPHYCTRL0_RE_VDD_DETVCCQLV18 | DSIDPHYCTRL0_EN_BGR;
+
+	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYCTRL0, dphyctrl0);
+	usleep_range(20, 30);
+
+	dphyctrl0 |= DSIDPHYCTRL0_EN_LDO1200;
+	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYCTRL0, dphyctrl0);
+	usleep_range(10, 20);
+
+	dphytim0 = DSIDPHYTIM0_TCLK_MISS(0) |
+		   DSIDPHYTIM0_T_INIT(dphy_timings->t_init);
+	dphytim1 = DSIDPHYTIM1_THS_PREPARE(dphy_timings->ths_prepare) |
+		   DSIDPHYTIM1_TCLK_PREPARE(dphy_timings->tclk_prepare) |
+		   DSIDPHYTIM1_THS_SETTLE(0) |
+		   DSIDPHYTIM1_TCLK_SETTLE(0);
+	dphytim2 = DSIDPHYTIM2_TCLK_TRAIL(dphy_timings->tclk_trail) |
+		   DSIDPHYTIM2_TCLK_POST(dphy_timings->tclk_post) |
+		   DSIDPHYTIM2_TCLK_PRE(dphy_timings->tclk_pre) |
+		   DSIDPHYTIM2_TCLK_ZERO(dphy_timings->tclk_zero);
+	dphytim3 = DSIDPHYTIM3_TLPX(dphy_timings->tlpx) |
+		   DSIDPHYTIM3_THS_EXIT(dphy_timings->ths_exit) |
+		   DSIDPHYTIM3_THS_TRAIL(dphy_timings->ths_trail) |
+		   DSIDPHYTIM3_THS_ZERO(dphy_timings->ths_zero);
+
+	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM0, dphytim0);
+	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM1, dphytim1);
+	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM2, dphytim2);
+	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYTIM3, dphytim3);
+
+	ret = reset_control_deassert(dsi->rstc);
+	if (ret < 0)
+		return ret;
+
+	udelay(1);
+
+	return 0;
+}
+
+static void rzg2l_mipi_dsi_dphy_exit(struct rzg2l_mipi_dsi *dsi)
+{
+	u32 dphyctrl0;
+
+	dphyctrl0 = rzg2l_mipi_dsi_phy_read(dsi, DSIDPHYCTRL0);
+
+	dphyctrl0 &= ~(DSIDPHYCTRL0_EN_LDO1200 | DSIDPHYCTRL0_EN_BGR);
+	rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYCTRL0, dphyctrl0);
+
+	reset_control_assert(dsi->rstc);
+}
+
+static int rzg2l_mipi_dsi_startup(struct rzg2l_mipi_dsi *dsi,
+				  const struct drm_display_mode *mode)
+{
+	unsigned long hsfreq;
+	unsigned int bpp;
+	u32 txsetr;
+	u32 clstptsetr;
+	u32 lptrnstsetr;
+	u32 clkkpt;
+	u32 clkbfht;
+	u32 clkstpt;
+	u32 golpbkt;
+	int ret;
+
+	/*
+	 * Relationship between hsclk and vclk must follow
+	 * vclk * bpp = hsclk * 8 * lanes
+	 * where vclk: video clock (Hz)
+	 *       bpp: video pixel bit depth
+	 *       hsclk: DSI HS Byte clock frequency (Hz)
+	 *       lanes: number of data lanes
+	 *
+	 * hsclk(bit) = hsclk(byte) * 8
+	 */
+	bpp = mipi_dsi_pixel_format_to_bpp(dsi->format);
+	hsfreq = (mode->clock * bpp * 8) / (8 * dsi->lanes);
+
+	ret = pm_runtime_resume_and_get(dsi->dev);
+	if (ret < 0)
+		return ret;
+
+	clk_set_rate(dsi->vclk, mode->clock * 1000);
+
+	ret = rzg2l_mipi_dsi_dphy_init(dsi, hsfreq);
+	if (ret < 0)
+		goto err_phy;
+
+	/* Enable Data lanes and Clock lanes */
+	txsetr = TXSETR_DLEN | TXSETR_NUMLANEUSE(dsi->lanes - 1) | TXSETR_CLEN;
+	rzg2l_mipi_dsi_link_write(dsi, TXSETR, txsetr);
+
+	/*
+	 * Global timings characteristic depends on high speed Clock Frequency
+	 * Currently MIPI DSI-IF just supports maximum FHD@60 with:
+	 * - videoclock = 148.5 (MHz)
+	 * - bpp: maximum 24bpp
+	 * - data lanes: maximum 4 lanes
+	 * Therefore maximum hsclk will be 891 Mbps.
+	 */
+	if (hsfreq > 445500) {
+		clkkpt = 12;
+		clkbfht = 15;
+		clkstpt = 48;
+		golpbkt = 75;
+	} else if (hsfreq > 250000) {
+		clkkpt = 7;
+		clkbfht = 8;
+		clkstpt = 27;
+		golpbkt = 40;
+	} else {
+		clkkpt = 8;
+		clkbfht = 6;
+		clkstpt = 24;
+		golpbkt = 29;
+	}
+
+	clstptsetr = CLSTPTSETR_CLKKPT(clkkpt) | CLSTPTSETR_CLKBFHT(clkbfht) |
+		     CLSTPTSETR_CLKSTPT(clkstpt);
+	rzg2l_mipi_dsi_link_write(dsi, CLSTPTSETR, clstptsetr);
+
+	lptrnstsetr = LPTRNSTSETR_GOLPBKT(golpbkt);
+	rzg2l_mipi_dsi_link_write(dsi, LPTRNSTSETR, lptrnstsetr);
+
+	return 0;
+
+err_phy:
+	rzg2l_mipi_dsi_dphy_exit(dsi);
+	pm_runtime_put(dsi->dev);
+
+	return ret;
+}
+
+static void rzg2l_mipi_dsi_stop(struct rzg2l_mipi_dsi *dsi)
+{
+	rzg2l_mipi_dsi_dphy_exit(dsi);
+	pm_runtime_put(dsi->dev);
+}
+
+static void rzg2l_mipi_dsi_set_display_timing(struct rzg2l_mipi_dsi *dsi,
+					      const struct drm_display_mode *mode)
+{
+	u32 vich1ppsetr;
+	u32 vich1vssetr;
+	u32 vich1vpsetr;
+	u32 vich1hssetr;
+	u32 vich1hpsetr;
+	int dsi_format;
+	u32 delay[2];
+	u8 index;
+
+	/* Configuration for Pixel Packet */
+	dsi_format = mipi_dsi_pixel_format_to_bpp(dsi->format);
+	switch (dsi_format) {
+	case 24:
+		vich1ppsetr = VICH1PPSETR_DT_RGB24;
+		break;
+	case 18:
+		vich1ppsetr = VICH1PPSETR_DT_RGB18;
+		break;
+	}
+
+	if ((dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) &&
+	    !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST))
+		vich1ppsetr |= VICH1PPSETR_TXESYNC_PULSE;
+
+	rzg2l_mipi_dsi_link_write(dsi, VICH1PPSETR, vich1ppsetr);
+
+	/* Configuration for Video Parameters */
+	vich1vssetr = VICH1VSSETR_VACTIVE(mode->vdisplay) |
+		      VICH1VSSETR_VSA(mode->vsync_end - mode->vsync_start);
+	vich1vssetr |= (mode->flags & DRM_MODE_FLAG_PVSYNC) ?
+			VICH1VSSETR_VSPOL_HIGH : VICH1VSSETR_VSPOL_LOW;
+
+	vich1vpsetr = VICH1VPSETR_VFP(mode->vsync_start - mode->vdisplay) |
+		      VICH1VPSETR_VBP(mode->vtotal - mode->vsync_end);
+
+	vich1hssetr = VICH1HSSETR_HACTIVE(mode->hdisplay) |
+		      VICH1HSSETR_HSA(mode->hsync_end - mode->hsync_start);
+	vich1hssetr |= (mode->flags & DRM_MODE_FLAG_PHSYNC) ?
+			VICH1HSSETR_HSPOL_HIGH : VICH1HSSETR_HSPOL_LOW;
+
+	vich1hpsetr = VICH1HPSETR_HFP(mode->hsync_start - mode->hdisplay) |
+		      VICH1HPSETR_HBP(mode->htotal - mode->hsync_end);
+
+	rzg2l_mipi_dsi_link_write(dsi, VICH1VSSETR, vich1vssetr);
+	rzg2l_mipi_dsi_link_write(dsi, VICH1VPSETR, vich1vpsetr);
+	rzg2l_mipi_dsi_link_write(dsi, VICH1HSSETR, vich1hssetr);
+	rzg2l_mipi_dsi_link_write(dsi, VICH1HPSETR, vich1hpsetr);
+
+	/*
+	 * Configuration for Delay Value
+	 * Delay value based on 2 ranges of video clock.
+	 * 74.25MHz is videoclock of HD@60p or FHD@30p
+	 */
+	if (mode->clock > 74250) {
+		delay[0] = 231;
+		delay[1] = 216;
+	} else {
+		delay[0] = 220;
+		delay[1] = 212;
+	}
+
+	if (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)
+		index = 0;
+	else
+		index = 1;
+
+	rzg2l_mipi_dsi_link_write(dsi, VICH1SET1R,
+				  VICH1SET1R_DLY(delay[index]));
+}
+
+static int rzg2l_mipi_dsi_start_hs_clock(struct rzg2l_mipi_dsi *dsi)
+{
+	bool is_clk_cont;
+	u32 hsclksetr;
+	u32 status;
+	int ret;
+
+	is_clk_cont = !(dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS);
+
+	/* Start HS clock */
+	hsclksetr = HSCLKSETR_HSCLKRUN_HS | (is_clk_cont ?
+					     HSCLKSETR_HSCLKMODE_CONT :
+					     HSCLKSETR_HSCLKMODE_NON_CONT);
+	rzg2l_mipi_dsi_link_write(dsi, HSCLKSETR, hsclksetr);
+
+	if (is_clk_cont) {
+		ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
+					status & PLSR_CLLP2HS,
+					2000, 20000, false, dsi, PLSR);
+		if (ret < 0) {
+			dev_err(dsi->dev, "failed to start HS clock\n");
+			return ret;
+		}
+	}
+
+	dev_dbg(dsi->dev, "Start High Speed Clock with %s clock mode",
+		is_clk_cont ? "continuous" : "non-continuous");
+
+	return 0;
+}
+
+static int rzg2l_mipi_dsi_stop_hs_clock(struct rzg2l_mipi_dsi *dsi)
+{
+	bool is_clk_cont;
+	u32 status;
+	int ret;
+
+	is_clk_cont = !(dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS);
+
+	/* Stop HS clock */
+	rzg2l_mipi_dsi_link_write(dsi, HSCLKSETR,
+				  is_clk_cont ? HSCLKSETR_HSCLKMODE_CONT :
+				  HSCLKSETR_HSCLKMODE_NON_CONT);
+
+	if (is_clk_cont) {
+		ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
+					status & PLSR_CLHS2LP,
+					2000, 20000, false, dsi, PLSR);
+		if (ret < 0) {
+			dev_err(dsi->dev, "failed to stop HS clock\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int rzg2l_mipi_dsi_start_video(struct rzg2l_mipi_dsi *dsi)
+{
+	u32 vich1set0r;
+	u32 status;
+	int ret;
+
+	/* Configuration for Blanking sequence and start video input*/
+	vich1set0r = VICH1SET0R_HFPNOLP | VICH1SET0R_HBPNOLP |
+		     VICH1SET0R_HSANOLP | VICH1SET0R_VSTART;
+	rzg2l_mipi_dsi_link_write(dsi, VICH1SET0R, vich1set0r);
+
+	ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
+				status & VICH1SR_VIRDY,
+				2000, 20000, false, dsi, VICH1SR);
+	if (ret < 0)
+		dev_err(dsi->dev, "Failed to start video signal input\n");
+
+	return ret;
+}
+
+static int rzg2l_mipi_dsi_stop_video(struct rzg2l_mipi_dsi *dsi)
+{
+	u32 status;
+	int ret;
+
+	rzg2l_mipi_dsi_link_write(dsi, VICH1SET0R, VICH1SET0R_VSTPAFT);
+	ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
+				(status & VICH1SR_STOP) && (!(status & VICH1SR_RUNNING)),
+				2000, 20000, false, dsi, VICH1SR);
+	if (ret < 0)
+		goto err;
+
+	ret = read_poll_timeout(rzg2l_mipi_dsi_link_read, status,
+				!(status & LINKSR_HSBUSY),
+				2000, 20000, false, dsi, LINKSR);
+	if (ret < 0)
+		goto err;
+
+	return 0;
+
+err:
+	dev_err(dsi->dev, "Failed to stop video signal input\n");
+	return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * Bridge
+ */
+
+static int rzg2l_mipi_dsi_attach(struct drm_bridge *bridge,
+				 enum drm_bridge_attach_flags flags)
+{
+	struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
+
+	return drm_bridge_attach(bridge->encoder, dsi->next_bridge, bridge,
+				 flags);
+}
+
+static void rzg2l_mipi_dsi_atomic_enable(struct drm_bridge *bridge,
+					 struct drm_bridge_state *old_bridge_state)
+{
+	struct drm_atomic_state *state = old_bridge_state->base.state;
+	struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
+	const struct drm_display_mode *mode;
+	struct drm_connector *connector;
+	struct drm_crtc *crtc;
+	int ret;
+
+	connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
+	crtc = drm_atomic_get_new_connector_state(state, connector)->crtc;
+	mode = &drm_atomic_get_new_crtc_state(state, crtc)->adjusted_mode;
+
+	ret = rzg2l_mipi_dsi_startup(dsi, mode);
+	if (ret < 0)
+		return;
+
+	rzg2l_mipi_dsi_set_display_timing(dsi, mode);
+
+	ret = rzg2l_mipi_dsi_start_hs_clock(dsi);
+	if (ret < 0)
+		goto err_stop;
+
+	ret = rzg2l_mipi_dsi_start_video(dsi);
+	if (ret < 0)
+		goto err_stop_clock;
+
+	return;
+
+err_stop_clock:
+	rzg2l_mipi_dsi_stop_hs_clock(dsi);
+err_stop:
+	rzg2l_mipi_dsi_stop(dsi);
+}
+
+static void rzg2l_mipi_dsi_atomic_disable(struct drm_bridge *bridge,
+					  struct drm_bridge_state *old_bridge_state)
+{
+	struct rzg2l_mipi_dsi *dsi = bridge_to_rzg2l_mipi_dsi(bridge);
+
+	rzg2l_mipi_dsi_stop_video(dsi);
+	rzg2l_mipi_dsi_stop_hs_clock(dsi);
+	rzg2l_mipi_dsi_stop(dsi);
+}
+
+static enum drm_mode_status
+rzg2l_mipi_dsi_bridge_mode_valid(struct drm_bridge *bridge,
+				 const struct drm_display_info *info,
+				 const struct drm_display_mode *mode)
+{
+	if (mode->clock > 148500)
+		return MODE_CLOCK_HIGH;
+
+	if (mode->clock < 5803)
+		return MODE_CLOCK_LOW;
+
+	return MODE_OK;
+}
+
+static const struct drm_bridge_funcs rzg2l_mipi_dsi_bridge_ops = {
+	.attach = rzg2l_mipi_dsi_attach,
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
+	.atomic_enable = rzg2l_mipi_dsi_atomic_enable,
+	.atomic_disable = rzg2l_mipi_dsi_atomic_disable,
+	.mode_valid = rzg2l_mipi_dsi_bridge_mode_valid,
+};
+
+/* -----------------------------------------------------------------------------
+ * Host setting
+ */
+
+static int rzg2l_mipi_dsi_host_attach(struct mipi_dsi_host *host,
+				      struct mipi_dsi_device *device)
+{
+	struct rzg2l_mipi_dsi *dsi = host_to_rzg2l_mipi_dsi(host);
+	int ret;
+
+	if (device->lanes > dsi->num_data_lanes) {
+		dev_err(dsi->dev,
+			"Number of lines of device (%u) exceeds host (%u)\n",
+			device->lanes, dsi->num_data_lanes);
+		return -EINVAL;
+	}
+
+	switch (mipi_dsi_pixel_format_to_bpp(device->format)) {
+	case 24:
+	case 18:
+		break;
+	default:
+		dev_err(dsi->dev, "Unsupported format 0x%04x\n", device->format);
+		return -EINVAL;
+	}
+
+	dsi->lanes = device->lanes;
+	dsi->format = device->format;
+	dsi->mode_flags = device->mode_flags;
+
+	dsi->next_bridge = devm_drm_of_get_bridge(dsi->dev, dsi->dev->of_node,
+						  1, 0);
+	if (IS_ERR(dsi->next_bridge)) {
+		ret = PTR_ERR(dsi->next_bridge);
+		dev_err(dsi->dev, "failed to get next bridge: %d\n", ret);
+		return ret;
+	}
+
+	drm_bridge_add(&dsi->bridge);
+
+	return 0;
+}
+
+static int rzg2l_mipi_dsi_host_detach(struct mipi_dsi_host *host,
+				      struct mipi_dsi_device *device)
+{
+	struct rzg2l_mipi_dsi *dsi = host_to_rzg2l_mipi_dsi(host);
+
+	drm_bridge_remove(&dsi->bridge);
+
+	return 0;
+}
+
+static const struct mipi_dsi_host_ops rzg2l_mipi_dsi_host_ops = {
+	.attach = rzg2l_mipi_dsi_host_attach,
+	.detach = rzg2l_mipi_dsi_host_detach,
+};
+
+/* -----------------------------------------------------------------------------
+ * Power Management
+ */
+
+static int __maybe_unused rzg2l_mipi_pm_runtime_suspend(struct device *dev)
+{
+	struct rzg2l_mipi_dsi *dsi = dev_get_drvdata(dev);
+
+	reset_control_assert(dsi->prstc);
+	reset_control_assert(dsi->arstc);
+
+	return 0;
+}
+
+static int __maybe_unused rzg2l_mipi_pm_runtime_resume(struct device *dev)
+{
+	struct rzg2l_mipi_dsi *dsi = dev_get_drvdata(dev);
+	int ret;
+
+	ret = reset_control_deassert(dsi->arstc);
+	if (ret < 0)
+		return ret;
+
+	ret = reset_control_deassert(dsi->prstc);
+	if (ret < 0)
+		reset_control_assert(dsi->arstc);
+
+	return ret;
+}
+
+static const struct dev_pm_ops rzg2l_mipi_pm_ops = {
+	SET_RUNTIME_PM_OPS(rzg2l_mipi_pm_runtime_suspend, rzg2l_mipi_pm_runtime_resume, NULL)
+};
+
+/* -----------------------------------------------------------------------------
+ * Probe & Remove
+ */
+
+static int rzg2l_mipi_dsi_probe(struct platform_device *pdev)
+{
+	unsigned int num_data_lanes;
+	struct rzg2l_mipi_dsi *dsi;
+	u32 txsetr;
+	int ret;
+
+	dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
+	if (!dsi)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, dsi);
+	dsi->dev = &pdev->dev;
+
+	ret = drm_of_get_data_lanes_count_ep(dsi->dev->of_node, 1, 0, 1, 4);
+	if (ret < 0)
+		return dev_err_probe(dsi->dev, ret,
+				     "missing or invalid data-lanes property\n");
+
+	num_data_lanes = ret;
+
+	dsi->mmio = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(dsi->mmio))
+		return PTR_ERR(dsi->mmio);
+
+	dsi->vclk = devm_clk_get(dsi->dev, "vclk");
+	if (IS_ERR(dsi->vclk))
+		return PTR_ERR(dsi->vclk);
+
+	dsi->rstc = devm_reset_control_get_exclusive(dsi->dev, "rst");
+	if (IS_ERR(dsi->rstc))
+		return dev_err_probe(dsi->dev, PTR_ERR(dsi->rstc),
+				     "failed to get rst\n");
+
+	dsi->arstc = devm_reset_control_get_exclusive(dsi->dev, "arst");
+	if (IS_ERR(dsi->arstc))
+		return dev_err_probe(&pdev->dev, PTR_ERR(dsi->arstc),
+				     "failed to get arst\n");
+
+	dsi->prstc = devm_reset_control_get_exclusive(dsi->dev, "prst");
+	if (IS_ERR(dsi->prstc))
+		return dev_err_probe(dsi->dev, PTR_ERR(dsi->prstc),
+				     "failed to get prst\n");
+
+	platform_set_drvdata(pdev, dsi);
+
+	pm_runtime_enable(dsi->dev);
+
+	ret = pm_runtime_resume_and_get(dsi->dev);
+	if (ret < 0)
+		goto err_pm_disable;
+
+	/*
+	 * TXSETR register can be read only after DPHY init. But during probe
+	 * mode->clock and format are not available. So initialize DPHY with
+	 * timing parameters for 80Mbps.
+	 */
+	ret = rzg2l_mipi_dsi_dphy_init(dsi, 80000);
+	if (ret < 0)
+		goto err_phy;
+
+	txsetr = rzg2l_mipi_dsi_link_read(dsi, TXSETR);
+	dsi->num_data_lanes = min(((txsetr >> 16) & 3) + 1, num_data_lanes);
+	rzg2l_mipi_dsi_dphy_exit(dsi);
+	pm_runtime_put(dsi->dev);
+
+	/* Initialize the DRM bridge. */
+	dsi->bridge.funcs = &rzg2l_mipi_dsi_bridge_ops;
+	dsi->bridge.of_node = dsi->dev->of_node;
+
+	/* Init host device */
+	dsi->host.dev = dsi->dev;
+	dsi->host.ops = &rzg2l_mipi_dsi_host_ops;
+	ret = mipi_dsi_host_register(&dsi->host);
+	if (ret < 0)
+		goto err_pm_disable;
+
+	return 0;
+
+err_phy:
+	rzg2l_mipi_dsi_dphy_exit(dsi);
+	pm_runtime_put(dsi->dev);
+err_pm_disable:
+	pm_runtime_disable(dsi->dev);
+	return ret;
+}
+
+static void rzg2l_mipi_dsi_remove(struct platform_device *pdev)
+{
+	struct rzg2l_mipi_dsi *dsi = platform_get_drvdata(pdev);
+
+	mipi_dsi_host_unregister(&dsi->host);
+	pm_runtime_disable(&pdev->dev);
+}
+
+static const struct of_device_id rzg2l_mipi_dsi_of_table[] = {
+	{ .compatible = "renesas,rzg2l-mipi-dsi" },
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, rzg2l_mipi_dsi_of_table);
+
+static struct platform_driver rzg2l_mipi_dsi_platform_driver = {
+	.probe	= rzg2l_mipi_dsi_probe,
+	.remove_new = rzg2l_mipi_dsi_remove,
+	.driver	= {
+		.name = "rzg2l-mipi-dsi",
+		.pm = &rzg2l_mipi_pm_ops,
+		.of_match_table = rzg2l_mipi_dsi_of_table,
+	},
+};
+
+module_platform_driver(rzg2l_mipi_dsi_platform_driver);
+
+MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>");
+MODULE_DESCRIPTION("Renesas RZ/G2L MIPI DSI Encoder Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi_regs.h
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * RZ/G2L MIPI DSI Interface Registers Definitions
+ *
+ * Copyright (C) 2022 Renesas Electronics Corporation
+ */
+
+#ifndef __RZG2L_MIPI_DSI_REGS_H__
+#define __RZG2L_MIPI_DSI_REGS_H__
+
+#include <linux/bits.h>
+
+/* DPHY Registers */
+#define DSIDPHYCTRL0			0x00
+#define DSIDPHYCTRL0_CAL_EN_HSRX_OFS	BIT(16)
+#define DSIDPHYCTRL0_CMN_MASTER_EN	BIT(8)
+#define DSIDPHYCTRL0_RE_VDD_DETVCCQLV18	BIT(2)
+#define DSIDPHYCTRL0_EN_LDO1200		BIT(1)
+#define DSIDPHYCTRL0_EN_BGR		BIT(0)
+
+#define DSIDPHYTIM0			0x04
+#define DSIDPHYTIM0_TCLK_MISS(x)	((x) << 24)
+#define DSIDPHYTIM0_T_INIT(x)		((x) << 0)
+
+#define DSIDPHYTIM1			0x08
+#define DSIDPHYTIM1_THS_PREPARE(x)	((x) << 24)
+#define DSIDPHYTIM1_TCLK_PREPARE(x)	((x) << 16)
+#define DSIDPHYTIM1_THS_SETTLE(x)	((x) << 8)
+#define DSIDPHYTIM1_TCLK_SETTLE(x)	((x) << 0)
+
+#define DSIDPHYTIM2			0x0c
+#define DSIDPHYTIM2_TCLK_TRAIL(x)	((x) << 24)
+#define DSIDPHYTIM2_TCLK_POST(x)	((x) << 16)
+#define DSIDPHYTIM2_TCLK_PRE(x)		((x) << 8)
+#define DSIDPHYTIM2_TCLK_ZERO(x)	((x) << 0)
+
+#define DSIDPHYTIM3			0x10
+#define DSIDPHYTIM3_TLPX(x)		((x) << 24)
+#define DSIDPHYTIM3_THS_EXIT(x)		((x) << 16)
+#define DSIDPHYTIM3_THS_TRAIL(x)	((x) << 8)
+#define DSIDPHYTIM3_THS_ZERO(x)		((x) << 0)
+
+/* --------------------------------------------------------*/
+/* Link Registers */
+#define LINK_REG_OFFSET			0x10000
+
+/* Link Status Register */
+#define LINKSR				0x10
+#define LINKSR_LPBUSY			BIT(13)
+#define LINKSR_HSBUSY			BIT(12)
+#define LINKSR_VICHRUN1			BIT(8)
+#define LINKSR_SQCHRUN1			BIT(4)
+#define LINKSR_SQCHRUN0			BIT(0)
+
+/* Tx Set Register */
+#define TXSETR				0x100
+#define TXSETR_NUMLANECAP		(0x3 << 16)
+#define TXSETR_DLEN			(1 << 9)
+#define TXSETR_CLEN			(1 << 8)
+#define TXSETR_NUMLANEUSE(x)		(((x) & 0x3) << 0)
+
+/* HS Clock Set Register */
+#define HSCLKSETR			0x104
+#define HSCLKSETR_HSCLKMODE_CONT	(1 << 1)
+#define HSCLKSETR_HSCLKMODE_NON_CONT	(0 << 1)
+#define HSCLKSETR_HSCLKRUN_HS		(1 << 0)
+#define HSCLKSETR_HSCLKRUN_LP		(0 << 0)
+
+/* Reset Control Register */
+#define RSTCR				0x110
+#define RSTCR_SWRST			BIT(0)
+#define RSTCR_FCETXSTP			BIT(16)
+
+/* Reset Status Register */
+#define RSTSR				0x114
+#define RSTSR_DL0DIR			(1 << 15)
+#define RSTSR_DLSTPST			(0xf << 8)
+#define RSTSR_SWRSTV1			(1 << 4)
+#define RSTSR_SWRSTIB			(1 << 3)
+#define RSTSR_SWRSTAPB			(1 << 2)
+#define RSTSR_SWRSTLP			(1 << 1)
+#define RSTSR_SWRSTHS			(1 << 0)
+
+/* Clock Lane Stop Time Set Register */
+#define CLSTPTSETR			0x314
+#define CLSTPTSETR_CLKKPT(x)		((x) << 24)
+#define CLSTPTSETR_CLKBFHT(x)		((x) << 16)
+#define CLSTPTSETR_CLKSTPT(x)		((x) << 2)
+
+/* LP Transition Time Set Register */
+#define LPTRNSTSETR			0x318
+#define LPTRNSTSETR_GOLPBKT(x)		((x) << 0)
+
+/* Physical Lane Status Register */
+#define PLSR				0x320
+#define PLSR_CLHS2LP			BIT(27)
+#define PLSR_CLLP2HS			BIT(26)
+
+/* Video-Input Channel 1 Set 0 Register */
+#define VICH1SET0R			0x400
+#define VICH1SET0R_VSEN			BIT(12)
+#define VICH1SET0R_HFPNOLP		BIT(10)
+#define VICH1SET0R_HBPNOLP		BIT(9)
+#define VICH1SET0R_HSANOLP		BIT(8)
+#define VICH1SET0R_VSTPAFT		BIT(1)
+#define VICH1SET0R_VSTART		BIT(0)
+
+/* Video-Input Channel 1 Set 1 Register */
+#define VICH1SET1R			0x404
+#define VICH1SET1R_DLY(x)		(((x) & 0xfff) << 2)
+
+/* Video-Input Channel 1 Status Register */
+#define VICH1SR				0x410
+#define VICH1SR_VIRDY			BIT(3)
+#define VICH1SR_RUNNING			BIT(2)
+#define VICH1SR_STOP			BIT(1)
+#define VICH1SR_START			BIT(0)
+
+/* Video-Input Channel 1 Pixel Packet Set Register */
+#define VICH1PPSETR			0x420
+#define VICH1PPSETR_DT_RGB18		(0x1e << 16)
+#define VICH1PPSETR_DT_RGB18_LS		(0x2e << 16)
+#define VICH1PPSETR_DT_RGB24		(0x3e << 16)
+#define VICH1PPSETR_TXESYNC_PULSE	(1 << 15)
+#define VICH1PPSETR_VC(x)		((x) << 22)
+
+/* Video-Input Channel 1 Vertical Size Set Register */
+#define VICH1VSSETR			0x428
+#define VICH1VSSETR_VACTIVE(x)		(((x) & 0x7fff) << 16)
+#define VICH1VSSETR_VSPOL_LOW		(1 << 15)
+#define VICH1VSSETR_VSPOL_HIGH		(0 << 15)
+#define VICH1VSSETR_VSA(x)		(((x) & 0xfff) << 0)
+
+/* Video-Input Channel 1 Vertical Porch Set Register */
+#define VICH1VPSETR			0x42c
+#define VICH1VPSETR_VFP(x)		(((x) & 0x1fff) << 16)
+#define VICH1VPSETR_VBP(x)		(((x) & 0x1fff) << 0)
+
+/* Video-Input Channel 1 Horizontal Size Set Register */
+#define VICH1HSSETR			0x430
+#define VICH1HSSETR_HACTIVE(x)		(((x) & 0x7fff) << 16)
+#define VICH1HSSETR_HSPOL_LOW		(1 << 15)
+#define VICH1HSSETR_HSPOL_HIGH		(0 << 15)
+#define VICH1HSSETR_HSA(x)		(((x) & 0xfff) << 0)
+
+/* Video-Input Channel 1 Horizontal Porch Set Register */
+#define VICH1HPSETR			0x434
+#define VICH1HPSETR_HFP(x)		(((x) & 0x1fff) << 16)
+#define VICH1HPSETR_HBP(x)		(((x) & 0x1fff) << 0)
+
+#endif /* __RZG2L_MIPI_DSI_REGS_H__ */