On Thu, May 06, 2021 at 02:24:17PM +0300, Andy Shevchenko wrote: > On Thursday, May 6, 2021, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: > > Curious that ACPI has SPI CS as always active high, > Here I didn’t get what exactly you are pointing out. GPIOs are active high, > due to historical reasons. Otherwise SPI CS depends on the actual hardware > and may be (most of the cases?) active low. SPI chip selects are almost always active low - the signal is often written nCS or /CS for that reason.
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