Messages in this thread | | | From | Fabio Estevam <> | Date | Wed, 27 Sep 2017 19:00:06 -0300 | Subject | Re: [PATCH 1/1] clk: imx6: refine hdmi_isfr's parent to make HDMI work on i.MX6 SoCs w/o VPU |
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On Tue, Aug 1, 2017 at 7:40 AM, Sébastien Szymanski <sebastien.szymanski@armadeus.com> wrote: > On i.MX6 SoCs without VPU (in my case MCIMX6D4AVT10AC), the hdmi driver > fails to probe: > > [ 2.540030] dwhdmi-imx 120000.hdmi: Unsupported HDMI controller > (0000:00:00) > [ 2.548199] imx-drm display-subsystem: failed to bind 120000.hdmi > (ops dw_hdmi_imx_ops): -19 > [ 2.557403] imx-drm display-subsystem: master bind failed: -19 > > That's because hdmi_isfr's parent, video_27m, is not correctly ungated. > As explained in commit 5ccc248cc537 ("ARM: imx6q: clk: Add support for > mipi_core_cfg clock as a shared clock gate"), video_27m is gated by > CCM_CCGR3[CG8]. > > On i.MX6 SoCs with VPU, the hdmi is working thanks to the > CCM_CMEOR[mod_en_ov_vpu] bit which makes the video_27m ungated whatever > is in CCM_CCGR3[CG8]. The issue can be reproduced by setting > CCMEOR[mod_en_ov_vpu] to 0. > > Make the HDMI work in every case by setting hdmi_isfr's parent to > mipi_core_cfg. > > Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
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