Hi Philipp,
On 01/03/2014 10:26 AM, Philipp Zabel wrote:
Am Freitag, den 03.01.2014, 17:07 +0000 schrieb Russell King - ARM
Linux:
On Fri, Jan 03, 2014 at 05:48:57PM +0100, Philipp Zabel wrote:
Hi Russell,
I've tested this series on a BD-SL (SabreLite) with HDMI. Right now
the HPD signal doesn't seem to work, but after overwriting the
connection check, I got a stable and correct picture on the monitor:
Hmm. Does this mean you're not getting any IRQs from the HDMI interface
when you plug and unplug the monitor?
147: 281 GIC 147 120000.hdmi
on turning the TV on:
147: 282 GIC 147 120000.hdmi
on unplugging the HDMI cable:
147: 283 GIC 147 120000.hdmi
on replugging the HDMI cable:
147: 284 GIC 147 120000.hdmi
Exactly. And while the RX_SENSE bits of HDMI_IH_PHY_STAT0 change when I
(un)plug, the HPD bit stays zero. I'll check with other hardware.
This is an issue we've seen before. The SABRE Lite board has
a voltage divider on the HPD pins and some monitors (esp. DVI
monitors) either don't drive things high enough to assert HPD or
bounce with connect/disconnect.
We've instrumented our 3.0.35 kernels to use the RX_SENSE bits
instead.
Regards,
Eric
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