On Tue, Dec 18, 2018 at 3:17 PM annapurna bommakanti
<[email protected]> wrote:
>
> Hi All,
>
> I am trying to bring up the SDIO WiFI module on the BBB on the MMC3.
> I tried the hardware connections as mentioned in the TI link:
>
> mmc3_pins_default: pinmux_mmc3_pins_default {
> pinctrl-single,pins = <
> 0x44 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_a1.mmc2_dat0 */
> 0x48 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_a2.mmc2_dat1 */
> 0x4C (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_a3.mmc2_dat2 */
> 0x78 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_ben1.mmc2_dat3 */
> 0x88 (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_csn3.mmc2_cmd */
> 0x8C (PIN_INPUT_PULLUP | MUX_MODE3) /* gpmc_clk.mmc2_clk */
> >;
> };
>
> mmc3_pins_sleep: pinmux_mmc3_pins_sleep {
> pinctrl-single,pins = <
> 0x44 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a1.mmc2_dat0 */
> 0x48 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a2.mmc2_dat1 */
> 0x4C (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a3.mmc2_dat2 */
> 0x78 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ben1.mmc2_da */
> 0x88 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_csn3.mmc2_cmd */
> 0x8C (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_clk.mmc2_clk */
> >;
> };
>
> I made the GPIO1_16 as input.
> I modified the am335x-boneblack.dts file as per the above.
So TI's pinmux agree's.
mymmc2_pins_default: mymmc2_pins_default {
pinctrl-single,pins = <
AM33XX_IOPAD(0x8c, PIN_INPUT_PULLUP | MUX_MODE3) /* (V12)
gpmc_clk.mmc2_clk */
AM33XX_IOPAD(0x88, PIN_INPUT_PULLUP | MUX_MODE3) /* (T13)
gpmc_csn3.mmc2_cmd */
AM33XX_IOPAD(0x44, PIN_INPUT_PULLUP | MUX_MODE3) /* (V14)
gpmc_a1.mmc2_dat0 */
AM33XX_IOPAD(0x48, PIN_INPUT_PULLUP | MUX_MODE3) /* (U14)
gpmc_a2.mmc2_dat1 */
AM33XX_IOPAD(0x4c, PIN_INPUT_PULLUP | MUX_MODE3) /* (T14)
gpmc_a3.mmc2_dat2 */
AM33XX_IOPAD(0x78, PIN_INPUT_PULLUP | MUX_MODE3) /* (U18)
gpmc_be1n.mmc2_dat3 */
>;
};
> But still the MMC3 is not up.
Well let's see your mmc3 node:
https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-BBGW-WL1835-00A0.dts#L144-L170
Regards,
--
Robert Nelson
https://rcn-ee.com/
--
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