Hello Wofram, On 04/14/2016 10:19 AM, Wolfram Sang wrote: > >> Yes, I also wonder why I'm the only one facing this issue... maybe no one >> else is using the tvp5150 driver on an OMAP board with mainline? > > I wonder why it only affects tvp5150. I don't see the connection yet. > Yes, me neither. All other I2C devices are working properly on this board. The only thing I can think, is that the tvp5150 needs a reset sequence in order to be operative. It basically toggles two pins in the chip, this is done in tvp5150_init() [0] and is needed before accessing I2C registers. Maybe runtime pm has an effect on this and the chip is not reset correctly? [0]: https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/drivers/media/i2c/tvp5150.c#n1311 Best regards, -- Javier Martinez Canillas Open Source Group Samsung Research America -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
