On Mon, Jun 9, 2014 at 2:49 PM, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote: > On Mon, Jun 09, 2014 at 11:29:28AM -0300, Fabio Estevam wrote: >> On Mon, Jun 9, 2014 at 11:06 AM, Russell King - ARM Linux >> <linux@xxxxxxxxxxxxxxxx> wrote: >> >> > Please check the status in /sys/class/drm/card0-HDMI-A-1/status. This >> > should report the current state of the hotplug detection. >> >> /sys/class/drm/card0-HDMI-A-1/status returns the correct state for >> HDMI cable connection. > > Good, so that means we're reporting the correct status to the DRM layer. > Please post the kernel boot messages, one with the HDMI cable disconnected, > and one with a HDMI sink connected. With HDMI cable connected (no image is seen on HDMI, only on lvds cable): imx-ipuv3 2400000.ipu: IPUv3H probed imx-ipuv3 2800000.ipu: IPUv3H probed [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). mmcblk0: mmc1:0007 SD4GB 3.70 GiB [drm] No driver support for vblank timestamp query. mmcblk0: unknown partition table imx-drm display-subsystem.11: bound imx-ipuv3-crtc.0 (ops ipu_crtc_ops) imx-drm display-subsystem.11: bound imx-ipuv3-crtc.1 (ops ipu_crtc_ops) imx-drm display-subsystem.11: bound imx-ipuv3-crtc.2 (ops ipu_crtc_ops) imx-drm display-subsystem.11: bound imx-ipuv3-crtc.3 (ops ipu_crtc_ops) imx-hdmi 120000.hdmi: Detected HDMI controller 0x13:0xa:0xa0:0xc1 imx-hdmi 120000.hdmi: hdmi_set_clk_regenerator: samplerate=48000 ratio=100 pixelclk=74250000 N=6144 cts=74250 imx-drm display-subsystem.11: bound 120000.hdmi (ops hdmi_ops) imx-hdmi 120000.hdmi: EVENT=plugin imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 0 imx-drm display-subsystem.11: bound ldb.10 (ops imx_ldb_ops) imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode imx-hdmi 120000.hdmi: got edid: width[51] x height[28] imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 138500000 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 138500000 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode If I disconnect/reconnect the HDMI cable (then image is seen on both HDMI and LVDS): root@freescale /$ imx-hdmi 120000.hdmi: EVENT=plugout imx-hdmi 120000.hdmi: EVENT=plugin imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 138500000 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode imx-hdmi 120000.hdmi: got edid: width[51] x height[28] imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 138500000 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 138500000 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode Now booting the kernel with HDMI disconnected: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). mmcblk0: mmc1:0007 SD4GB 3.70 GiB [drm] No driver support for vblank timestamp query. mmcblk0: unknown partition table imx-drm display-subsystem.11: bound imx-ipuv3-crtc.0 (ops ipu_crtc_ops) imx-drm display-subsystem.11: bound imx-ipuv3-crtc.1 (ops ipu_crtc_ops) imx-drm display-subsystem.11: bound imx-ipuv3-crtc.2 (ops ipu_crtc_ops) imx-drm display-subsystem.11: bound imx-ipuv3-crtc.3 (ops ipu_crtc_ops) imx-hdmi 120000.hdmi: Detected HDMI controller 0x13:0xa:0xa0:0xc1 imx-hdmi 120000.hdmi: hdmi_set_clk_regenerator: samplerate=48000 ratio=100 pixelclk=74250000 N=6144 cts=74250 imx-drm display-subsystem.11: bound 120000.hdmi (ops hdmi_ops) imx-drm display-subsystem.11: bound ldb.10 (ops imx_ldb_ops) Console: switching to colour frame buffer device 128x48 imx-drm display-subsystem.11: fb0: frame buffer device imx-drm display-subsystem.11: registered panic notifier [drm] Initialized imx-drm 1.0.0 20120507 on minor 0 And after connecting the HDMI cable: imx-hdmi 120000.hdmi: EVENT=plugin imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 0 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode imx-hdmi 120000.hdmi: got edid: width[51] x height[28] imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 78800000 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode imx-hdmi 120000.hdmi: Non-CEA mode used in HDMI imx-hdmi 120000.hdmi: final pixclk = 78800000 imx-hdmi 120000.hdmi: imx_hdmi_setup DVI mode Image is seen on both LVDS and HDMI monitor, but HDMI resolution is not correct (this is a different bug though). > >> The HDMI undetected issue I am seeing on sabresd seems to be related >> to the simultaneous usage of HDMI and LVDS. >> >> If I remove the ldb node from the imx6qdl-sabresd.dtsi, then the HDMI >> cable is correctly detected and HDMI is shown right after boot. > > I wonder if the problem is that HDMI and LVDS are interfering with each > other wrt the required pixel clock, and LVDS is winning. If we have > HDMI enabled, many HDMI sinks will only work if we set one of their > supported modes (with the dot clock within 1% - though some sinks are > more lenient). Yes, it seems this is the case. Thanks _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
