Messages in this thread | | | Date | Mon, 27 Oct 2014 13:58:19 +0100 | From | Wolfram Sang <> | Subject | Re: I2C OF IRQ parsing issue due to probe ordering |
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> The i2c@e6520000 node is probed before the gpio@e6051000 node. The > of_i2c_register_devices() function tries to register all children, including > hdmi@39. It tries to parse and map the I2C client IRQ by calling > irq_of_parse_and_map(), which returns 0 as the interrupt controller isn't > probed yet. The adv7511 driver later probes the hdmi@39 device and gets > client->irq set to 0.
I've got this strange feeling of deja vu... Ah, here: Thierry Reding tackled this problem a year ago. His series:
https://lkml.org/lkml/2013/9/16/111 (of/irq: Defer interrupt reference resolution)
He did a V2 (which never made it to the i2c list). Seems like the first two patches made it and the rest got stalled without discussion?
https://lkml.org/lkml/2013/9/18/216
Adding Thierry to the queue. Maybe he can bring some light to what happened to his series.
Regards,
Wolfram
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