Re: RTL usb adapter question

2017-10-27 Thread James Cameron
On Fri, Oct 27, 2017 at 10:23:54PM -0500, David Ashley wrote: > On 10/26/17, James Cameron wrote: > > Interesting, thanks. It should be a QFN 46 pin chip; you may have > > counted 15 instead of 14 pins on the long edge. Send me a photograph > > of the inside, off-list? > > I

Re: RTL usb adapter question

2017-10-27 Thread David Ashley
On 10/26/17, James Cameron wrote: > Interesting, thanks. It should be a QFN 46 pin chip; you may have > counted 15 instead of 14 pins on the long edge. Send me a photograph > of the inside, off-list? I uploaded a couple of pictures here: http://www.linuxmotors.com/RTL8188CUS/

Re: RTL usb adapter question

2017-10-27 Thread Larry Finger
On 10/26/2017 05:00 PM, James Cameron wrote: Base on your evidence, I'd say the device is different to others and has firmware included. That would seem to be the case. The firmware has been updated since that device was released, and I suggest that you provide the file requested, namely

Re: RTL usb adapter question

2017-10-26 Thread James Cameron
Interesting, thanks. It should be a QFN 46 pin chip; you may have counted 15 instead of 14 pins on the long edge. Send me a photograph of the inside, off-list? There's a brief datasheet that I found, but no sign of firmware or registers documentation, as usual;

Re: RTL usb adapter question

2017-10-26 Thread David Ashley
I opened up the dongle, it has these things inside (aside from 2 coils and various resistors and capacitors) 1) 48 pin chip (9 pins, 15 pins, 9 pins, 15 pins) REALTEK RTL8188CUS F6J23P2 GF27 TAIWAN 6 pin chip (3 pins,3 pins) BZ5JA 40.0 mhz crystal oscillator I was thinking maybe some serial

Re: RTL usb adapter question

2017-10-26 Thread James Cameron
Base on your evidence, I'd say the device is different to others and has firmware included. On Thu, Oct 26, 2017 at 04:45:54PM -0500, David Ashley wrote: > OK I'm completely baffled. > > I have explicitly removed all rtlwifi/ firmware files from the root > filesystem and yet the usb dongle still

Re: RTL usb adapter question

2017-10-26 Thread David Ashley
OK I'm completely baffled. I have explicitly removed all rtlwifi/ firmware files from the root filesystem and yet the usb dongle still works, even after a power cycle. How can it possibly be getting its firmware file Here are the relevant kernel messages. There is no file rtl8192cufw.bin

Re: RTL usb adapter question

2017-10-25 Thread Mark Greer
On Wed, Oct 25, 2017 at 01:43:55PM -0500, David Ashley wrote: > I'm trying to understand how the linux kernel loads RTL8188CUS firmware > rtlwifi: Loading alternative firmware rtlwifi/rtl8192cufw.bin > when that file isn't available anywhere in my embedded system's filesystem. > > Basically I'm

Re: RTL usb adapter question

2017-10-25 Thread Larry Finger
On 10/25/2017 01:43 PM, David Ashley wrote: I'm trying to understand how the linux kernel loads RTL8188CUS firmware rtlwifi: Loading alternative firmware rtlwifi/rtl8192cufw.bin when that file isn't available anywhere in my embedded system's filesystem. Basically I'm trying to understand the

RTL usb adapter question

2017-10-25 Thread David Ashley
I'm trying to understand how the linux kernel loads RTL8188CUS firmware rtlwifi: Loading alternative firmware rtlwifi/rtl8192cufw.bin when that file isn't available anywhere in my embedded system's filesystem. Basically I'm trying to understand the theory. We have a product that is making use of