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Commit 63b5053e authored by Laurent Pinchart's avatar Laurent Pinchart
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drm: rcar-du: Add R8A7796 support 



Document the R8A7796-specific DT bindings and support them in the
driver. The HDMI output is currently not supported.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
parent 73323ddb

Documentation/devicetree/bindings/display/renesas,du.txt

+6 −4
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ Required Properties: 
    - "renesas,du-r8a7793" for R8A7793 (R-Car M2-N) compatible DU

    - "renesas,du-r8a7794" for R8A7794 (R-Car E2) compatible DU

    - "renesas,du-r8a7795" for R8A7795 (R-Car H3) compatible DU

    - "renesas,du-r8a7796" for R8A7796 (R-Car M3-W) compatible DU



  - reg: A list of base address and length of each memory resource, one for

    each entry in the reg-names property.
@@ -26,10 +27,10 @@ Required Properties: 
  - clock-names: Name of the clocks. This property is model-dependent.

    - R8A7779 uses a single functional clock. The clock doesn't need to be

      named.

    - R8A779[012345] use one functional clock per channel and one clock per LVDS

      encoder (if available). The functional clocks must be named "du.x" with

      "x" being the channel numerical index. The LVDS clocks must be named

      "lvds.x" with "x" being the LVDS encoder numerical index.

    - R8A779[0123456] use one functional clock per channel and one clock per

      LVDS encoder (if available). The functional clocks must be named "du.x"

      with "x" being the channel numerical index. The LVDS clocks must be

      named "lvds.x" with "x" being the LVDS encoder numerical index.

    - In addition to the functional and encoder clocks, all DU versions also

      support externally supplied pixel clocks. Those clocks are optional.

      When supplied they must be named "dclkin.x" with "x" being the input
@@ -52,6 +53,7 @@ corresponding to each DU output. 
 R8A7793 (M2-N)	DPAD		LVDS 0		-		-

 R8A7794 (E2)	DPAD 0		DPAD 1		-		-

 R8A7795 (H3)	DPAD		HDMI 0		HDMI 1		LVDS

 R8A7796 (M3-W)	DPAD		HDMI		LVDS		-





Example: R8A7790 (R-Car H2) DU

drivers/gpu/drm/rcar-du/rcar_du_drv.c

+25 −0
Original line number Diff line number Diff line
@@ -178,6 +178,30 @@ static const struct rcar_du_device_info rcar_du_r8a7795_info = { 
	.num_lvds = 1,

};



static const struct rcar_du_device_info rcar_du_r8a7796_info = {

	.gen = 3,

	.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK

		  | RCAR_DU_FEATURE_EXT_CTRL_REGS

		  | RCAR_DU_FEATURE_VSP1_SOURCE,

	.num_crtcs = 3,

	.routes = {

		/* R8A7796 has one RGB output, one LVDS output and one

		 * (currently unsupported) HDMI output.

		 */

		[RCAR_DU_OUTPUT_DPAD0] = {

			.possible_crtcs = BIT(2),

			.encoder_type = DRM_MODE_ENCODER_NONE,

			.port = 0,

		},

		[RCAR_DU_OUTPUT_LVDS0] = {

			.possible_crtcs = BIT(0),

			.encoder_type = DRM_MODE_ENCODER_LVDS,

			.port = 2,

		},

	},

	.num_lvds = 1,

};



static const struct of_device_id rcar_du_of_table[] = {

	{ .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },

	{ .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
@@ -186,6 +210,7 @@ static const struct of_device_id rcar_du_of_table[] = { 
	{ .compatible = "renesas,du-r8a7793", .data = &rcar_du_r8a7791_info },

	{ .compatible = "renesas,du-r8a7794", .data = &rcar_du_r8a7794_info },

	{ .compatible = "renesas,du-r8a7795", .data = &rcar_du_r8a7795_info },

	{ .compatible = "renesas,du-r8a7796", .data = &rcar_du_r8a7796_info },

	{ }

};