drm/bridge: nwl-dsi: Set PHY mode in nwl_dsi_mode_set()

The Northwest Logic MIPI DSI host controller embedded in i.MX8qxp
works with a Mixel MIPI DPHY + LVDS PHY combo to support either
a MIPI DSI display or a LVDS display.  So, this patch calls
phy_set_mode() from nwl_dsi_mode_set() to set PHY mode to MIPI DPHY
explicitly.

Cc: Guido Günther <agx@sigxcpu.org>
Cc: Robert Chiras <robert.chiras@nxp.com>
Cc: Martin Kepplinger <martin.kepplinger@puri.sm>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: NXP Linux Team <linux-imx@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Acked-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220419010852.452169-2-victor.liu@nxp.com

diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
index ad74e65..d83111b 100644 (file)
--- a/drivers/gpu/drm/bridge/nwl-dsi.c
+++ b/drivers/gpu/drm/bridge/nwl-dsi.c
@@ -665,6 +665,12 @@ static int nwl_dsi_mode_set(struct nwl_dsi *dsi)
                return ret;
        }
 
+       ret = phy_set_mode(dsi->phy, PHY_MODE_MIPI_DPHY);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to set DSI phy mode: %d\n", ret);
+               goto uninit_phy;
+       }
+
        ret = phy_configure(dsi->phy, phy_cfg);
        if (ret < 0) {
                DRM_DEV_ERROR(dev, "Failed to configure DSI phy: %d\n", ret);