On Mon, Apr 15, 2024 at 10:18:39AM +0300, Adrian Hunter wrote: > On 15/04/24 10:06, Richard Clark wrote: > > The mmc_gpio_get_cd(...) will return 0 called from sdhci_get_cd(...), which means > > the card is not present. Actually, the card detection pin is active low by default > > according to the SDHCI psec, thus the card detection result is not correct, more > > SDHCI spec covers the SDHCI lines. GPIO is separate. ... and the key bit of information that should be mentioned is in the case of a GPIO, the GPIO library can be told if a GPIO is active-high or active-low in either firmware or via the GPIO lookup data, and this should be used instead of drivers inventing their own "quirking". -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
