From: "Howard Harte" <hharte@broadcom.com>
To: =?iso-8859-1?Q?Thomas_Lang=E5s?= <thomas.langas@fxitech.com>,
	"Franky (Zhenhui) Lin" <frankyl@broadcom.com>
cc: "Arend Van Spriel" <arend@broadcom.com>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Date: Mon, 21 Nov 2011 15:42:08 -0800
Subject: RE: brcm80211 (with bcm4329-chip)
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Hello Thomas,

The max clock speed supported by 4329 is 50MHz.

-Howard


-----Original Message-----
From: Thomas Lang?s [mailto:thomas.langas@fxitech.com] 
Sent: Monday, November 21, 2011 3:41 PM
To: Franky (Zhenhui) Lin
Cc: Arend Van Spriel; linux-wireless@vger.kernel.org; Howard Harte
Subject: Re: brcm80211 (with bcm4329-chip)

On Mon, Nov 21, 2011 at 11:48 PM, Franky Lin <frankyl@broadcom.com> wrote:
> I think both firmware is fine. I was referring to the
> brcm/bcm4329-fullmac-4.txt It's a nvram file contains critical information
> used by firmware. And it's hardware dependent. We have submitted a patch to
> remove the one in Linux firmware repository to avoid confusion as it's for a
> Broadcom internal development board. It may not work with your set up. I
> think there should be a similar file comes with the proprietary driver
> package if you are using a module instead of a 4329 chip. Please use that
> one.

I did two tests one with only changing the nvram-file, and one with
changing both
the firmware and the nvram-file (this is the latest logfile you got).  Both had
the same result.

> I don't have Exynos 4210 spec. But I guess for a such new chip the SDIO host
> should be able to run the bus at 50MHz. You could try to hack the MMC/SDIO
> host driver and reduce the max frequency to 25MHz or even further to 12MHz
> to see if any improvement.

Max clock is 63MHz, and the setting we have now works with 2.6.36 and the
proprietary driver (bcm4329).

Looking at the platform-code we have for 2.6.x, I see that we set
.cd_type                = S3C_SDHCI_CD_GPIO,
Instead of
.cd_type                = S3C_SDHCI_CD_INTERNAL,

I don't know if this matters (looking at the schematics, the clk-pin is the same
for mmc2 as it is for the gpio).  Is this something related to the old
proprietary
driver?


Regards,
Thomas