Can anyone provide insught into what the problem could be here?
These messages for a WL1835MODCOM8 board connected to Xilinx Zynq host
(The wlcore driver loaded correctly on boot-up)
ifconfig wlan0 up
[ 146.908576] wlcore: PHY firmware version: Rev 8.2.0.0.212
[ 147.193035] ------------[ cut here ]------------
[ 147.197873] WARNING: CPU: 0 PID: 810 at drivers/net/wireless/ti/wlcore/sdio.c:107 wl12xx_sdio_raw_read+0x128/0x170()
[ 147.208377] Modules linked in:
[ 147.211357] CPU: 0 PID: 810 Comm: ifconfig Tainted: G W 3.14.2-xilinx-00001-gc0292a5c-dirty #1
[ 147.220910] [<c0015658>] (unwind_backtrace) from [<c00119b4>] (show_stack+0x10/0x14)
[ 147.228703] [<c00119b4>] (show_stack) from [<c0517344>] (dump_stack+0x8c/0xd0)
[ 147.235925] [<c0517344>] (dump_stack) from [<c002295c>] (warn_slowpath_common+0x60/0x84)
[ 147.243957] [<c002295c>] (warn_slowpath_common) from [<c0022a10>] (warn_slowpath_null+0x18/0x20)
[ 147.252799] [<c0022a10>] (warn_slowpath_null) from [<c0335d5c>] (wl12xx_sdio_raw_read+0x128/0x170)
[ 147.261755] [<c0335d5c>] (wl12xx_sdio_raw_read) from [<c03250ac>] (wlcore_cmd_wait_for_event_or_timeout+0x120/0x21c)
[ 147.272269] [<c03250ac>] (wlcore_cmd_wait_for_event_or_timeout) from [<c0327b5c>] (wlcore_cmd_regdomain_config_locked+0x1d4/0x264)
[ 147.284002] [<c0327b5c>] (wlcore_cmd_regdomain_config_locked) from [<c0331450>] (wl1271_hw_init+0x58/0x170)
[ 147.293728] [<c0331450>] (wl1271_hw_init) from [<c0322d60>] (wl1271_op_add_interface+0x684/0x918)
[ 147.302598] [<c0322d60>] (wl1271_op_add_interface) from [<c04e94ac>] (ieee80211_do_open+0xaec/0xb9c)
[ 147.311714] [<c04e94ac>] (ieee80211_do_open) from [<c0409248>] (__dev_open+0xa0/0xf4)
[ 147.319531] [<c0409248>] (__dev_open) from [<c0409490>] (__dev_change_flags+0x8c/0x140)
[ 147.327514] [<c0409490>] (__dev_change_flags) from [<c040955c>] (dev_change_flags+0x18/0x48)
[ 147.335947] [<c040955c>] (dev_change_flags) from [<c046401c>] (devinet_ioctl+0x2ec/0x6b0)
[ 147.344055] [<c046401c>] (devinet_ioctl) from [<c03efd8c>] (sock_ioctl+0x234/0x288)
[ 147.351760] [<c03efd8c>] (sock_ioctl) from [<c00e3fb4>] (do_vfs_ioctl+0x55c/0x61c)
[ 147.359322] [<c00e3fb4>] (do_vfs_ioctl) from [<c00e40a8>] (SyS_ioctl+0x34/0x5c)
[ 147.366613] [<c00e40a8>] (SyS_ioctl) from [<c000e660>] (ret_fast_syscall+0x0/0x48)
[ 147.374110] ---[ end trace ade924661a90291f ]---
[ 147.378766] wl1271_sdio mmc1:0001:2: sdio read failed (-123)
[ 147.384351] wlcore: ERROR reg domain conf error
[ 157.415002] mmc1: Timeout waiting for hardware interrupt.
[ 157.458070] wlcore: ERROR firmware boot failed despite 3 retries
ifconfig: SIOCSIFFLAGS: No medium found
root@microzed:~# [ 157.577426] mmc1: card 0001 removed
[ 157.705841] sdhci-arasan e0101000.ps7-sdio: card claims to support voltages below defined range
[ 157.746527] mmc1: queuing unknown CIS tuple 0x91 (3 bytes)
[ 157.771358] mmc1: new SDIO card at address 0001
[ 158.045234] wlcore: wl18xx HW: 183x or 180x, PG 2.2 (ROM 0x11)
[ 158.074870] wlcore: loaded
[ 158.077930] wlcore: driver version: xilinx-v2014.2-trd-1-gc0292a5c-dirty
[ 158.084557] wlcore: compilation time: Wed Aug 13 09:37:58 2014
Should I be reducing the SDIO Clock frequency (presently clocked at 50MHz)?
What else should I Be looking at?
The host interface signals appear ok
The relevant Device Tree bindings are:
/********* Wilink-8 Section start *********/
wlcore {
compatible = "wlcore";
interrupt-parent = <&ps7_scugic_0>;
gpio = <0>; /* MIO0 = Bank0 pin0 ? */
/* use edge irqs for suspend/resume */
platform-quirks = <1>;
/* if a 12xx card is there, configure the clock to WL12XX_REFCLOCK_38_XTAL */
board-ref-clock = <4>;
};
wlan_en_reg: fixedregulator@1 {
compatible = "regulator-fixed";
regulator-name = "wlan-en-regulator";
regulator-min-microvolt = <3300000>; /* Actually 1.8V, but this keeps the driver happy */
regulator-max-microvolt = <3300000>;
/* WLAN_EN GPIO for PS-Pmod MIO9: Bank0, pin9 */
gpio = <&ps7_gpio_0 9 0x4>;
/* WLAN card specific delay */
startup-delay-us = <70000>;
enable-active-high;
};
ps7_sd_1: ps7-sdio@e0101000 {
clock-frequency = <5000000>;
clock-names = "clk_xin", "clk_ahb";
clocks = <&clkc 22>, <&clkc 33>;
compatible = "arasan,sdhci-8.9a";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 47 4>;
reg = <0xe0101000 0x1000>;
xlnx,has-cd = <0x0>;
xlnx,has-power = <0x0>;
xlnx,has-wp = <0x0>;
vmmc-supply = <&wlan_en_reg>;
cap-power-off-card;
};
/********* Wilink-8 section end *********/
Thanks!
Peter
