Linux/PROCESSOR-SDK-AM335X: AM335X

Hi Annapurna,

It is difficult to comment without schematics, but here are few pointers to change in beagle-bone black related dts(am335x-bone-common.dtsi). This is just starter for you to get started with dts changes and it is not complete

1. Check to which gpio Chip select is connected and update "cd-gpios"
2. Check to which pins clk and data are connected and set IOPAD offset and mode correctly. Check your schematics and refer to am335x datasheet to know the pins.
3. If there are only 4 data, change bus-width and pinctrl-single,pins accordingly
You can start with adding an entry like below
&mmc2 {
status = "okay";
bus-width = <0x8>;
pinctrl-names = "default";
pinctrl-0 = <&mmc2_pins>;
cd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
};

mmc2_pins: pinmux_mmc2_pins {
pinctrl-single,pins = <
AM33XX_IOPAD(0x880, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn1.mmc1_clk */
AM33XX_IOPAD(0x884, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
AM33XX_IOPAD(0x800, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
AM33XX_IOPAD(0x804, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
AM33XX_IOPAD(0x808, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
AM33XX_IOPAD(0x80c, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
AM33XX_IOPAD(0x810, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
AM33XX_IOPAD(0x814, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
AM33XX_IOPAD(0x818, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
AM33XX_IOPAD(0x81c, PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
>;
};