Part Number: AM5728
Other Parts Discussed in Thread: WL1835
Tool/software: Linux
Hi all,
I am trying to setup wifi module in mmc2 (mmc0,mmc1,mmc2) but I am unable to make it work with HS mode,(with clock rate above 48Mhz),
With max-frequency 24Mhz means default mode is working fine.
Failure log:
[ 6.294967] mmc2: err from mmc wait for cmd: 0 in mmc_io_rw_direct_host
[ 6.294969] Exit mmc_sdio_switch_hs
[ 6.294973] mmc2: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 1 timing 2
[ 6.294995] mmc2: clock 48000000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 4 timing 2
[ 6.295001] mmc2:sdio init card done in mmc_attach_sdio
[ 6.295005] mmc2:funcs : 3
[ 6.295007] ENTER sdio_init_func
[ 6.295011] mmc2: alloc fun done fn:1
[ 6.295015] mmc2: starting CMD52 arg 00020000 flags 00000195
[ 6.295020] WRITE DONE:mmc2: CMD52, argument 0x00020000
[ 6.295025] mmc2: req done (CMD52): 0: 00000000 00000000 00000000 00000000
[ 6.295045] mmc2: err from mmc wait for cmd: 0 in mmc_io_rw_direct_host
[ 6.295047] ENTER sdio_read_cis
[ 6.295053] mmc2: starting CMD52 arg 00021200 flags 00000195
[ 6.295058] WRITE DONE:mmc2: CMD52, argument 0x00021200
[ 6.295063] mmc2: req done (CMD52): 0: 00000000 00000000 00000000 00000000
[ 6.295082] mmc2: err from mmc wait for cmd: 0 in mmc_io_rw_direct_host
[ 6.295084] mmc2: ret:0 mmc_io_rw_direct done in sdio_read_cis
[ 6.295090] mmc2: starting CMD52 arg 00021400 flags 00000195
[ 6.295095] WRITE DONE:mmc2: CMD52, argument 0x00021400
[ 6.295102] mmc2: req done (CMD52): -84: 00000000 00000000 00000000 00000000
[ 6.295118] mmc2: err from mmc wait for cmd: -84 in mmc_io_rw_direct_host
[ 6.295121] mmc2: ret:-84 mmc_io_rw_direct done in sdio_read_cis
[ 6.295123] mmc2:sdio read func cis done in sdio_init_func
[ 6.295136] mmc2: error -84 whilst initialising SDIO card
[ 6.295140] mmc2: starting CMD55 arg 00000000 flags 000000f5
[ 6.295145] WRITE DONE:mmc2: CMD55, argument 0x00000000
[ 6.295152] mmc2: req done (CMD55): -110: 00000000 00000000 00000000 00000000
[ 6.295171] mmc2: starting CMD55 arg 00000000 flags 000000f5
-------------------------
Device Tree:
mmc3_pins_default: mmc3_pins_default {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x377c, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_clk.mmc3_clk */
DRA7XX_CORE_IOPAD(0x3780, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_cmd.mmc3_cmd */
DRA7XX_CORE_IOPAD(0x3784, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat0.mmc3_dat0 */
DRA7XX_CORE_IOPAD(0x3788, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat1.mmc3_dat1 */
DRA7XX_CORE_IOPAD(0x378c, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat2.mmc3_dat2 */
DRA7XX_CORE_IOPAD(0x3790, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat3.mmc3_dat3 */
>;
};
mmc3_pins_hs: mmc3_pins_hs {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x377c, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_clk.mmc3_clk */
DRA7XX_CORE_IOPAD(0x3780, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_cmd.mmc3_cmd */
DRA7XX_CORE_IOPAD(0x3784, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat0.mmc3_dat0 */
DRA7XX_CORE_IOPAD(0x3788, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat1.mmc3_dat1 */
DRA7XX_CORE_IOPAD(0x378c, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat2.mmc3_dat2 */
DRA7XX_CORE_IOPAD(0x3790, (PIN_INPUT_PULLUP | MUX_MODE0)) /* mmc3_dat3.mmc3_dat3 */
>;
};
vmmcwl_fixed: fixedregulator-mmcwl {
compatible = "regulator-fixed";
regulator-name = "vmmcwl_fixed";
/* For TI WL12xx use 1.8V*/
/*
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
*/
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio5 8 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
wlreg_on: fixedregulator@100 {
compatible = "regulator-fixed";
regulator-name = "wlreg_on";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
startup-delay-us = <70000>;
gpio = <&gpio5 8 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
};
&mmc3 {
status = "okay";
vmmc-supply = <&vmmcwl_fixed>;
bus-width = <4>;
pinctrl-names = "default";
cap-power-off-card;
keep-power-in-suspend;
ti,non-removable;
ti,needs-special-hs-handling;
enable-sdio-wakeup;
cd-post; /* This delays card detect until we call wifi_card_detect() */
wifi-host; /* This lets wifi_card_detect() work */
cap-sdio-irq; /* To set sdio mmc3 in interrupt mode default use polling mode*/
pinctrl-names = "default", "hs", "sdr12", "sdr25", "sdr50";
pinctrl-0 = <&mmc3_pins_default>;
pinctrl-1 = <&mmc3_pins_hs>;
pinctrl-2 = <&mmc3_pins_sdr12>;
pinctrl-3 = <&mmc3_pins_sdr25>;
pinctrl-4 = <&mmc3_pins_sdr50 &mmc3_iodelay_manual1_conf>;
max-frequency = <48000000>;
#address-cells = <1>;
#size-cells = <0>;
wlcore: wlcore@2 {
compatible = "ti,wl1835";
reg = <2>;
interrupt-parent = <&gpio5>;
interrupts = <7 IRQ_TYPE_LEVEL_HIGH>;
};
};
--------------------------
Any error in dts configuration?
Am using latest sdk 4.00 with kernel 4.9.28-geed43d1050.
Thanks,
Suraj
