[PATCH 1/3] drm: bridge: synopsys/dw-hdmi: Enable cec clock
festevam at gmail.com
Sat Oct 14 06:41:20 PDT 2017
On Sat, Oct 14, 2017 at 10:21 AM, Pierre-Hugues Husson <phh at phh.me> wrote:
> As far as I understand, dw_hdmi_cec_enable only gates
> the CEC clock inside the Synopsis IP,
> but the SOC still has to provide a specific CEC clock to it.
> To enable such an external CEC clock, the binding documentation 
> mentions a "cec" optional clock, and I'm not seeing any code in dw-hdmi
> to enable it.
In the case of i.MX6 we control the CEC clock via
HDMI_MC_CLKDIS_CECCLK_DISABLE bit inside the Synopsis IP.
Looks like Rockchip needs the external CEC clock then.
More information about the Linux-rockchip