The mmc/sd card detect gpio definition in DT is not defined as per hardware design, the card detect gpio is an active low signal. As per MMC/SD device tree binding documentation, the card detect signal should be an active low signal and when ever a hardware is designed with an active high card detect gpio then "cd-inverted" dt parameter should be used to detect the actual status for the card. This was not captured till now because gpio is used as interrupt source and mmc_rescan task is scheduled. The value of the gpio is not used to determine card presence. Pushed a branch [1] for testing and tested this patch series on am335x bone black [2], am437x-gp evm [3] and dra72x evm [4]. [1]: git://git.ti.com/~mugunthanvnm/ti-linux-kernel/linux.git mmc-cd-gpio-fix [2]: http://pastebin.ubuntu.com/12762164/ [3]: http://pastebin.ubuntu.com/12762168/ [4]: http://pastebin.ubuntu.com/12762169/ Mugunthan V N (3): ARM: DTS: am335x: fix cd-gpios definition as per hardware design and dt binding docs ARM: DTS: am43xx: fix cd-gpios definition as per hardware design and dt binding docs ARM: DTS: dra7xx: am57xx: fix cd-gpios definition as per hardware design and dt binding docs arch/arm/boot/dts/am335x-bone-common.dtsi | 3 +-- arch/arm/boot/dts/am335x-evm.dts | 2 +- arch/arm/boot/dts/am335x-evmsk.dts | 2 +- arch/arm/boot/dts/am437x-gp-evm.dts | 2 +- arch/arm/boot/dts/am437x-idk-evm.dts | 2 +- arch/arm/boot/dts/am437x-sk-evm.dts | 2 +- arch/arm/boot/dts/am43x-epos-evm.dts | 2 +- arch/arm/boot/dts/am57xx-beagle-x15.dts | 2 +- arch/arm/boot/dts/dra7-evm.dts | 2 +- arch/arm/boot/dts/dra72-evm.dts | 2 +- 10 files changed, 10 insertions(+), 11 deletions(-) -- 2.6.1.133.gf5b6079 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
