Messages in this thread | | | Date | Sat, 16 Jul 2022 11:30:12 +0200 | From | Michael Walle <> | Subject | Re: [PATCH 1/2] mtd: spi-nor: When a flash memory is missing do not report an error |
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Am 2022-07-16 10:20, schrieb Michal Suchánek:
>> So if DT says there isn't a flash on a specific CS when there is, then >> DT should be fixed to describe the flash, and then we can probe it. >> You >> both seem to be saying the same thing here, and I agree. > > The disagreement is about the situation when there is sometimes a flash > chip.
No. The disagreement is what should happen if the DT says there is a device but there isn't. Which right now is an error and it should stay that way. Your hardware description says there is a flash but it cannot be probed, so it is an error. What about a board which has an actual error and the flash isn't responding? You trade one use case for another.
Also I've looked at the PHY subsystem and there, if a PHY is described in the DT but isn't there, the following error will be printed: dev_err(&mdio->dev, "MDIO device at address %d is missing.\n", addr);
And that is for a bus which can even be automatically be probed/detected.
-michael
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