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authorGuido Günther <agx@sigxcpu.org>2019-08-29 14:30:03 +0300
committerStefan Agner <stefan@agner.ch>2019-10-14 23:19:32 +0300
commitb1d066930606cf2cbfb1c32b53cc2d7577754eff (patch)
tree0daaac40831297f63c134e54a851236fa724d541 /drivers/gpu/drm/mxsfb
parentd02340436695cbf6920ae1aaaed8afdc8635468d (diff)
downloadlinux-b1d066930606cf2cbfb1c32b53cc2d7577754eff.tar.xz
drm/mxsfb: Read bus flags from bridge if present
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> Signed-off-by: Stefan Agner <stefan@agner.ch> Link: https://patchwork.freedesktop.org/patch/msgid/1567078215-31601-3-git-send-email-robert.chiras@nxp.com
Diffstat (limited to 'drivers/gpu/drm/mxsfb')
-rw-r--r--drivers/gpu/drm/mxsfb/mxsfb_crtc.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_crtc.c b/drivers/gpu/drm/mxsfb/mxsfb_crtc.c
index de09b93e60ea..b69ace8bf526 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));