On Tue, Jan 23, 2024 at 01:26:04PM +0000, Christophe Leroy wrote: > Le 23/01/2024 à 14:18, Mark Brown a écrit : > > On Tue, Jan 23, 2024 at 12:04:30PM +0100, Herve Codina wrote: > >> Moving the SPI_CS_CNT_MAX value from 4 to 8 is not enough to handle my case. > >> Tested moving SPI_CS_CNT_MAX to 16 and it was ok. > > OK, I've also heard 12 as a number which this would cover. > By the way the comment in include/linux/spi/spi.h is confusing. This > SPI_CS_CNT_MAX is really not the max number of CS supported per SPI > device but the max number of CS supported per SPI controller. Well, it's a combination of the comment being confusing and the implementation being a bit broken - we simply shouldn't be limiting the number of chip selects per controller, the per device limit is much more reasonable. So ideally the code would be changed to reflect the comment.
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