WL1831MOD: 驱动挂载失败

平台:xilinx zcu3eg                          

系统:petalinux 2018.3,linux版本4.14

开发板和WL1831模组通过SDIO方式连接，未能正常挂载成SDIO设备。

系统日志报出异常。

[ 311.055591] mmc1: Timeout waiting for hardware cmd interrupt.
[ 311.061329] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 311.067753] mmc1: sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 311.074183] mmc1: sdhci: Blk size: 0x00000000 | Blk cnt: 0x00000000
[ 311.080607] mmc1: sdhci: Argument: 0x000000aa | Trn mode: 0x00000000
[ 311.087030] mmc1: sdhci: Present: 0x01f70001 | Host ctl: 0x00000001
[ 311.093453] mmc1: sdhci: Power: 0x00000000 | Blk gap: 0x00000080
[ 311.099877] mmc1: sdhci: Wake-up: 0x00000000 | Clock: 0x0000f447
[ 311.106300] mmc1: sdhci: Timeout: 0x00000000 | Int stat: 0x00000000
[ 311.112723] mmc1: sdhci: Int enab: 0x00ff0003 | Sig enab: 0x00ff0003
[ 311.119146] mmc1: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
[ 311.125570] mmc1: sdhci: Caps: 0x31e8c881 | Caps_1: 0x00002007
[ 311.131993] mmc1: sdhci: Cmd: 0x0000081a | Max curr: 0x00000000
[ 311.138416] mmc1: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x00000000
[ 311.144839] mmc1: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
[ 311.151262] mmc1: sdhci: Host ctl2: 0x00000000
[ 311.155690] mmc1: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x0000000000000000
[ 311.162806] mmc1: sdhci: ============================================

测试上电时序,参考《WL18x1 WiLink 8 Single-Band Combo Device Supporting Wi-Fi® , Bluetooth® , and Bluetooth® Low Energy》

测试上电过程中时序正常，测试WLAN_IRQ的电平为1.2V，和文档中描述的1.8V不符合。测试了2块WIFI模块，电平均为1.2V。不清楚为什么WLAN_IRQ电平不正常。

谢谢

文档《WL18x1 WiLink 8 Single-Band Combo Device Supporting Wi-Fi® , Bluetooth® , and Bluetooth® Low Energy》

wl1801xx.pdf

Kevin Qiu1：

应该是驱动程序有问题，没有驱动起来，对照dts文件检查一下https://git.ti.com/cgit/wilink8-wlan/build-utilites/tree/patches/kernel_patches/beaglebone-wilink8-capes/Enable-TI-WiFi-Bluetooth-am335x-boneblack-WL1837.patch?h=r8.8

,

ouyang huayu：

按照dts参考的配置，还是没有解决。

什么原因可能导致WLAN_IRQ的电平为1.2V呢？

,

Kevin Qiu1：

如果连接正确的话，WLAN_IRQ的电平1.2V基本上就是软件配置的问题

我没有linux环境，无法测试，建议你将问题发到英文论坛https://e2e.ti.com/support/wireless-connectivity/wi-fi-group/wifi/f/wi-fi-forum

,

ouyang huayu：

在5.12.4 WLAN Power-Up Sequence的时序图里有这句话 “Indicates completion of FW download and Internal initialization。”

上电过程中还需要下载固件，会不会是我的模块里没有固件。

,

Kevin Qiu1：

看下下面两份使用指南：

https://www.ti.com.cn/cn/lit/ug/swru570a/swru570a.pdf

https://www.ti.com.cn/cn/lit/ug/swru561a/swru561a.pdf

另外也没有在日志中看到mmc1: new high speed SDIO card at address 0001，建议你还是发到英文论坛看一下