On Mon, Apr 15, 2024 at 3:22 PM Russell King (Oracle) <linux@xxxxxxxxxxxxxxx> wrote: > > 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". > Agree! But unfortunately, it seems I can't find the right place to handle this from either firmware or via the GPIO lookup data. Will be appreciated if any suggestion about that?! > -- > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
