On 05/21/2014 10:26 AM, Tomi Valkeinen wrote: > On 21/05/14 11:14, Florian Vaussard wrote: > >>> I think Parlor has one and the "hdmi-connector" binding now >>> supports it. See Tomi's 3.16/fbdev-omap branch. >>> >> >> Looking into the details, the HPD pin of the parlor board is >> connected to the OMAP4 HDMI IP. The LINK_CONNECT and >> LINK_DISCONNECT events are managed by hdmi_irq_handler() in >> hdmi4.c to turn on/off the PHY's power. So there is no need to >> use the hgp-gpios binding of "hdmi-connector" IMHO. Correct me if >> I am wrong, as the public TRM is pretty thin regarding the OMAP4 >> HDMI IP. > > The PHY's link-connect and disconnect are a separate thing, not > really related to the HPD. > > The hdmi_hpd pin on OMAP should be configured to GPIO mode, and the > GPIO should be handled by the hdmi-connector. > > The HDMI driver doesn't have support for the HDMI IP's HPD, and if > I recall right, the HDMI IP's HPD was not without problems. And > afaik it doesn't really bring anything, a normal GPIO does the job > just fine. > I see. I will use the pin as a GPIO, and post a v2. Regards, Florian -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
