Finally , i modified the dts on NX , related to cd-gpio , and its works.
cd-gpios = <&tegra_main_gpio TEGRA194_MAIN_GPIO(Q, 2) 0>;
status = "okay";
PQ02 is the pin we designed on carrier board to use as sd card 's cd-gpio
Another question , but it is on TX2NX
I take similar modify to dts , but it doesn’t work.
cd-gpios = <&tegra_main_gpio TEGRA_MAIN_GPIO(X, 4) 0>;
status = okay;|
PQ02 pinmux mapping on TX2NX is PX04 , both using same carrier board.
We also modified PX04 pull-high resistor on carrier board as TX2NX pinmux excel shows , which is no required on NX.
But sd card still not work on TX2NX in Ubuntu.
, and PX04=476 gpio can be export , it does’t change state while sd card plugged.
Is there any other modification required on TX2NX of using sd card?