Commit 15360d7f authored May 25, 2022 by Chris Park Committed by Alex Deucher Jul 05, 2022

drm/amd/display: Switch to correct DTO on HDMI



[Why]
For Pixel Rate control, when on HDMI, HDMI DTO should be selected
instead of DP DTO.

[How]
Pass HDMI parameter for HDMI stream, and select correct DTO.

Signed-off-by: Chris Park <chris.park@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 740ccea3

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -323,6 +323,8 @@ static void dcn32_update_clocks_update_dtb_dto(struct clk_mgr_internal *clk_mgr,
		if (pipe_ctx->stream_res.audio != NULL)
		dto_params.req_audio_dtbclk_khz = 24000;
		}
		if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
		dto_params.is_hdmi = true;

		dccg->funcs->set_dtbclk_dto(clk_mgr->dccg, &dto_params);
		//dccg->funcs->set_audio_dtbclk_dto(clk_mgr->dccg, &dto_params);

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -171,6 +171,9 @@ void dccg32_set_dtbclk_dto(
		REG_UPDATE_2(OTG_PIXEL_RATE_CNTL[params->otg_inst],
		DTBCLK_DTO_ENABLE[params->otg_inst], 0,
		PIPE_DTO_SRC_SEL[params->otg_inst], 1);
		if (params->is_hdmi)
		REG_UPDATE(OTG_PIXEL_RATE_CNTL[params->otg_inst],
		PIPE_DTO_SRC_SEL[params->otg_inst], 0);

		REG_WRITE(DTBCLK_DTO_MODULO[params->otg_inst], 0);
		REG_WRITE(DTBCLK_DTO_PHASE[params->otg_inst], 0);
		@@ -188,6 +191,7 @@ static void dccg32_set_valid_pixel_rate(
		dto_params.ref_dtbclk_khz = ref_dtbclk_khz;
		dto_params.otg_inst = otg_inst;
		dto_params.pixclk_khz = pixclk_khz;
		dto_params.is_hdmi = true;

		dccg32_set_dtbclk_dto(dccg, &dto_params);
		}