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drm/bridge: tc358768: Add LP mode command support

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Currently the driver ignores MIPI_DSI_MODE_LPM and always uses HS mode.
Add code to enable HS mode in pre_enable() only if MIPI_DSI_MODE_LPM is
not set, and always enable HS mode in enable() for video transmission.

Tested-by: João Paulo Gonçalves <joao.goncalves@toradex.com> # Toradex Verdin AM62
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260311-tc358768-v2-5-e75a99131bd5@ideasonboard.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
This commit is contained in:
Tomi Valkeinen 2026-03-11 09:48:16 +02:00
parent b8eed179f0
commit 2c7d48c75c
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/bridge/tc358768.c
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@ -1091,7 +1091,8 @@ static void tc358768_bridge_atomic_pre_enable(struct drm_bridge *bridge,
/* Configure DSI_Control register */
val = (dsi_dev->lanes - 1) << 1;
val |= TC358768_DSI_CONTROL_TXMD;
if (!(dsi_dev->mode_flags & MIPI_DSI_MODE_LPM))
val |= TC358768_DSI_CONTROL_TXMD;
if (!(dsi_dev->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS))
val |= TC358768_DSI_CONTROL_HSCKMD;
@ -1123,6 +1124,11 @@ static void tc358768_bridge_atomic_enable(struct drm_bridge *bridge,
return;
}
/* Enable HS mode for video TX */
tc358768_confw_update_bits(priv, TC358768_DSI_CONTROL,
TC358768_DSI_CONTROL_TXMD,
TC358768_DSI_CONTROL_TXMD);
/* clear FrmStop and RstPtr */
tc358768_update_bits(priv, TC358768_PP_MISC, 0x3 << 14, 0);