Other Parts Discussed in Thread: WL1837, , WL1835, AM3352, TPS65910, TLV320AIC3106
Tool/software: Linux
Hello,
We are trying to bring up the WL1837 interfaced with the AM3357 based custom board. we have followed the every instruction provided in the wiki page Platform Integration Guide. 
we find that our WLAN_EN pin is not high, even after enabling it in DTS, it is not going high. Is there any other thing that we need to look over.
From the other forum we came to know that WLAN is not getting enabled because of the fault in SDIO initialization. Can anybody help me here to find what is going wrong with our SDIO initialization?, we have enabled MMC/SDIO support in menuconfig. Do we need to insert any modules related to SDIO function of MMC. Below are the code snippets of our DTS file.
wlan_en_reg: fixedregulator@2 {
compatible = "regulator-fixed";
regulator-name = "wlan-en-regulator";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
startup-delay-us = <70000>;
/* WLAN_EN GPIO for this board - Bank1, pin16 */
gpio = <&gpio1 16 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
/* wl12xx/wl18xx card enable/irq GPIOs. */
wlan_pins_default: pinmux_wlan_pins_default {
pinctrl-single,pins = <
0x40 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a0.gpio1_16 */
0x19C (PIN_INPUT | MUX_MODE7) /* mcasp0_ahclkr.gpio3_17 */
0x1AC (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* mcasp0_ahclkx.gpio3_21 */
>;
};
wlan_pins_sleep: pinmux_wlan_pins_sleep {
pinctrl-single,pins = <
0x40 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a0.gpio1_16 */
0x19C (PIN_INPUT | MUX_MODE7) /* mcasp0_ahclkr.gpio3_17 */
0x1AC (PIN_OUTPUT_PULLUP | MUX_MODE7) /* mcasp0_ahclkx.gpio3_21 */
>;
};
/* wl12xx/wl18xx card on mmc3 */
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 */
>;
};
uart1_pins_default: pinmux_uart1_pins_default {
pinctrl-single,pins = <
0x178 (PIN_INPUT | MUX_MODE0) /* uart1_ctsn.uart1_ctsn */
0x17C (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart1_rtsn.uart1_rtsn */
0x180 (PIN_INPUT_PULLUP | MUX_MODE0) /* uart1_rxd.uart1_rxd */
0x184 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart1_txd.uart1_txd */
>;
};
/* wl12xx/wl18xx card enable/irq GPIOs. */
wlan_pins_default: pinmux_wlan_pins_default {
pinctrl-single,pins = <
0x40 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a0.gpio1_16 */
0x19C (PIN_INPUT | MUX_MODE7) /* mcasp0_ahclkr.gpio3_17 */
0x1AC (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* mcasp0_ahclkx.gpio3_21 */
>;
};
wlan_pins_sleep: pinmux_wlan_pins_sleep {
pinctrl-single,pins = <
0x40 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a0.gpio1_16 */
0x19C (PIN_INPUT | MUX_MODE7) /* mcasp0_ahclkr.gpio3_17 */
0x1AC (PIN_OUTPUT_PULLUP | MUX_MODE7) /* mcasp0_ahclkx.gpio3_21 */
>;
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_pins_default>;
status = "okay";
};
&edma {
ti,edma-xbar-event-map = <1 12
2 13>;
};
&mmc3{
status = "okay";
vmmc-supply = <&wlan_en_reg>;
bus-width = <4>;
dmas = <&edma 12 &edma 13>;
dma-names = "tx","rx";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&mmc3_pins_default &wlan_pins_default>;
pinctrl-1 = <&mmc3_pins_sleep &wlan_pins_sleep>;
ti,non-removable;
ti,needs-special-hs-handling;
cap-power-off-card;
keep-power-in-suspend;
#address-cells = <1>;
#size-cells = <0>;
wlcore: wlcore@0 {
compatible = "ti,wl1835";
reg = <2>;
interrupt-parent = <&gpio3>;
interrupts = <17 IRQ_TYPE_EDGE_RISING>;
};
};
Please help me in getting this.
Thank you,
Regards,
Sachin
