Re: EDB9302 - No USB or Ethernet

[Matthias Kaehlcke <matthias@xxxxxxxxxxxx>]

El Tue, Nov 25, 2008 at 07:58:02AM +0100 Matthias Kaehlcke ha dit:

> El Mon, Nov 24, 2008 at 11:09:44PM -0600 Andrew Wiley ha dit:
> 
> > I'm working on a Qwerk, which is basically an Cirrus Logic EDB9302
> > board, and I'm trying to upgrade the kernel on it (the end result
> > being better wireless drivers, but that's a different story).
> > Anyway, the board originally ran the 2.6.8 kernel, with some magic
> > from Cirrus Labs. My understanding is that newer kernels shouldn't
> > need any "magic" to work, that hardware drivers are in a fairly stable
> > state. Is this... mostly correct?
> > 
> > After some fiddling with my kernel config, I've gotten a 2.6.27.7
> > kernel to boot on this board, mount a RAMDisk that RedBoot loads into
> > memory, and, well, run. The problem is that I have basically no USB
> > and no ethernet. The USB support is strange because it will register
> > devices on startup and will register device removals. It won't,
> > however, register insertions or allow me to access any devices that
> > are connected. I've been trying to mount a flashdrive, and it just
> > isn't there. As for the ethernet, all I can say is that `ifconfig -a`
> > doesn't show it, and there are no messages about it on startup. I've
> > enabled the driver in the kernel config, so I really don't know what's
> > going on.
> > 
> > I'm somewhat of a noob to linux on an ARM CPU, so feel free to tell me
> > I'm completely wrong.
> > Some useful info:
> > My kernel config: http://pastebin.com/ma046a13
> > A Log of startup and the hardware problems: http://pastebin.com/m2dd2b964
> 
> to make USB working you need to apply the following patch:
> 
> --- linux-2.6.27.org/arch/arm/mach-ep93xx/core.c				2008-10-10
> 00:13:53.000000000 +0200
> +++ linux-2.6.27/arch/arm/mach-ep93xx/core.c		2008-10-28
> 08:05:53.000000000 +0100
> @@ -26,6 +26,7 @@
>  #include <linux/serial_core.h>
>  #include <linux/device.h>
>  #include <linux/mm.h>
> +#include <linux/dma-mapping.h>
>  #include <linux/time.h>
>  #include <linux/timex.h>
>  #include <linux/delay.h>
> @@ -450,12 +451,13 @@
> 	 },
>  };
>  
> +
>  static struct platform_device ep93xx_ohci_device = {
> 				.name									 = "ep93xx-ohci",
> 				.id											 = -1,
> 				.dev											 = {
> -																	 .dma_mask						= (void
> *)0xffffffff,
> -								.coherent_dma_mask			= 0xffffffff,
> +																				.dma_mask								=
> &ep93xx_ohci_device.dev.coherent_dma_mask,
> +								.coherent_dma_mask			= DMA_BIT_MASK(32),
> 								},
> 								.num_resources	= ARRAY_SIZE(ep93xx_ohci_resources),
> 								.resource				= ep93xx_ohci_resources,

sorry, it seems i screwed up the patches when pasting them to my
editor ...

better have a look at

http://lkml.org/lkml/2008/10/28/63

and

http://lkml.org/lkml/2008/9/21/159

-- 
Matthias Kaehlcke
Embedded Linux Engineer
Barcelona


  The salvation of mankind lies only in making everything the concern of all
                         (Alexander Solzhenitsyn)
                                                                 .''`.
    using free software / Debian GNU/Linux | http://debian.org  : :'  :
                                                                `. `'`
gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4                  `-

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