Bring up TI WILINK 8 to Zedboard

Hello.
I am trying to bring up TI SDIO Wifi module on Zedboard
I am using this adaptor
http://zedboard.org/product/wilink-8-adaptor
with WL1837MODCOM8I (from TI) on zedboard
I have built the hardware platform explained in this tutorial
http://zedboard.org/sites/default/files/documentations/GSG-AES-PMOD-WILINK8-G-v1_6.pdf
I use Vivado 2015.2 and kernel 3.17
In addition  I downloaded the script files provided (for the build with latest ArchiTech SDK) The SDK 2.1.0 Yocto build includes Wilink8 R8.5 driver support.
During power up shows up next error:
request_irq() failed
and wlcore doesn't loaded
In device tree next lines were added:
wlcore {
           compatible = "wlcore";
           interrupt-parent = <0x3>;
           irq = <0x0>;
           platform-quirks = <0x1>;
           board-ref-clock = <0x4>;
     };

     fixedregulator@1 {
           compatible = "regulator-fixed";
           regulator-name = "wlan-en-regulator";
           regulator-min-microvolt = <0x325aa0>;
           regulator-max-microvolt = <0x325aa0>;
           gpio = <0x4 0x9 0x4>;
           startup-delay-us = <0x11170>;
           enable-active-high;
           linux,phandle = <0x6>;
           phandle = <0x6>;
     };

Any suggestions?

Thanks

0 jafoste4 over 8 years ago

Hello Yevgeny Kremer,
First I would suggest goin through the Getting Started Guide in Vivado 2014.2 since that is the version this trainnig was created in. Also one other thing to pay attention too.
One item not captured in the documentation, was for that version of the Wilink 8 driver the CD (Card Detect) input for the SDIO interface needs to be included in the interface (even though “not used”) and this needs to be at logic ‘0’ (not N/C as shown in the block diagram)
ie. Attention needs to be paid to this signal when generating the platform files!
a)      For MicroZed standalone (or when fitted onto the IO Carrier Card)
CD signal for SDIO_1 was originally routed to MIO47
b)      For MicroZed fitted on an Arduino Carrier Card
CD signal for SDIO_1 is on EMIO (pin M14) which connects to JX2 pin 87,
which on the Arduino Carrier Card connects to unused TP70,
a pull-down resistor is enabled in the constraints file to achieve the logic ’0’ for this input
-Josh
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0 Former Member over 8 years ago in reply to jafoste4

Hi, Josh.
Thanks for your response. I made the relevant correction to CD signal for SDIO_1. But it doesn't fix the problem. In addition when I use my Vivado 2015.2 design for zedboard, bootloader (u-boot.elf), device tree for zedboard and compiled kernel from microZed image everything working fine, just when i load 3.17 kernel that I build following the instruction in this guide
http://architechboards-zedboard.readthedocs.io/en/latest/bsp.html
I get the specific error:
wlcore: ERROR request_irq() failed: -22
Maybe it something wrong with Interrupt definition?
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0 pnefos over 6 years ago

I am looking for one of these adaptors if you have one to sell. AVNET does not offer these now. - Patrick
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0 jafoste4 over 6 years ago

Hello,
Unfortunatly that Pmod is obsolete, my suggestion would be for you to look into the aes-pmod-mur-1dx-g pmod.
http://www.avnet.com/shop/us/p/kits-and-tools/development-kits/avnet-engineering-services-ade--1/aes-pmod-mur-1dx-g-3074457345632926609/
--Josh
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