Unverified Commit ec710af5 authored by Tony Lindgren's avatar Tony Lindgren Committed by Robert Foss
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drm/bridge: tc358775: Configure hs_rate and lp_rate 



The hs_rate and lp_rate may be used by the dsi host for timing
calculations. The tc358775 has a maximum bit rate of 1 Gbps/lane,
tc358765 has maximurate of 800 Mbps per lane.

Reviewed-by: default avatarMichael Walle <mwalle@kernel.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
Reviewed-by: default avatarRobert Foss <rfoss@kernel.org>
Signed-off-by: default avatarRobert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240225062008.33191-11-tony@atomide.com
parent ce2196db

drivers/gpu/drm/bridge/tc358775.c

+13 −0
Original line number Diff line number Diff line
@@ -635,6 +635,19 @@ static int tc_attach_host(struct tc_data *tc) 
	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |

			  MIPI_DSI_MODE_LPM;



	/*

	 * The hs_rate and lp_rate are data rate values. The HS mode is

	 * differential, while the LP mode is single ended. As the HS mode

	 * uses DDR, the DSI clock frequency is half the hs_rate. The 10 Mbs

	 * data rate for LP mode is not specified in the bridge data sheet,

	 * but seems to be part of the MIPI DSI spec.

	 */

	if (tc->type == TC358765)

		dsi->hs_rate = 800000000;

	else

		dsi->hs_rate = 1000000000;

	dsi->lp_rate = 10000000;



	ret = devm_mipi_dsi_attach(dev, dsi);

	if (ret < 0) {

		dev_err(dev, "failed to attach dsi to host\n");