On Wed, Nov 29, 2017 at 09:11:43AM +0000, Russell King - ARM Linux wrote:
On Wed, Nov 29, 2017 at 08:41:45AM +0100, Hans Verkuil wrote:
Hi Russell,
On 11/29/2017 12:17 AM, Russell King - ARM Linux wrote:
Hi,
This patch series adds CEC support to the DRM TDA998x driver. The TDA998x family of devices integrate a TDA9950 CEC at a separate I2C address from the HDMI encoder.
Implementation of the CEC part is separate to allow independent CEC implementations, or independent HDMI implementations (since the TDA9950 may be a separate device.)
Thank you for this patch series! I assume you are testing this with a BeagleBone Black? If so, do you have a patch for the dts that hooks up the interrupt? If possible, I'd like to test this with my BBB.
I don't, I test it on the SolidRun Dove Cubox. I can't help with BBB.
It looks like I need to update the binding document - I'll send a patch for that shortly.
The additional property that's required to have CEC functional is a specification for calib-gpio, which must be the GPIO used for the TDA998x interrupt - you'll have to work out which GPIO that is, that's the bit I can't help with.
This GPIO is used to calibrate a free running oscillator within the TDA998x used to clock the TDA9950 CEC block.