[PATCH v2 02/15] drm/mxsfb: Read bus flags from bridge if present
From: Robert Chiras <robert.chiras@nxp.com>
Date: 2019-08-14 10:50:04
Also in:
dri-devel, linux-devicetree, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, mxsfb drm driver, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Marek Vasut, Stefan Agner, Linus Torvalds
From: Guido Günther <agx@sigxcpu.org> The bridge might have special requirmentes on the input bus. This is e.g. used by the imx-nwl bridge. Signed-off-by: Guido Günther <agx@sigxcpu.org> Reviewed-by: Stefan Agner <stefan@agner.ch> --- drivers/gpu/drm/mxsfb/mxsfb_crtc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_crtc.c b/drivers/gpu/drm/mxsfb/mxsfb_crtc.c
index de09b93..b69ace8 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_crtc.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_crtc.c@@ -209,7 +209,7 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb) { struct drm_device *drm = mxsfb->pipe.crtc.dev; struct drm_display_mode *m = &mxsfb->pipe.crtc.state->adjusted_mode; - const u32 bus_flags = mxsfb->connector->display_info.bus_flags; + u32 bus_flags = mxsfb->connector->display_info.bus_flags; u32 vdctrl0, vsync_pulse_len, hsync_pulse_len; int err;
@@ -233,6 +233,9 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb) clk_set_rate(mxsfb->clk, m->crtc_clock * 1000); + if (mxsfb->bridge && mxsfb->bridge->timings) + bus_flags = mxsfb->bridge->timings->input_bus_flags; + DRM_DEV_DEBUG_DRIVER(drm->dev, "Pixel clock: %dkHz (actual: %dkHz)\n", m->crtc_clock, (int)(clk_get_rate(mxsfb->clk) / 1000));
--
2.7.4
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