tiomap-dev team mailing list archive

[Steve Sakoman <645167@xxxxxxxxxxxxxxxxxx>]

On Wed, 2010-09-22 at 13:15 +0000, Nicolas Dechesne wrote:
> @ogra: this bug is very critical since our WLAN and BT chips on
> pandaboard don't work without the proper pin muxing.
> 
> @lool: agreed. uboot should do the proper pin mux

I'll prepare a patch to correct the Panda pinmux.

Steve

-- 
omap4: u-boot overrides pin-muxing settings from x-loader
https://bugs.launchpad.net/bugs/645167
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Status in Linaro U-Boot: New
Status in “u-boot-linaro” package in Ubuntu: New
Status in “u-boot-linaro” source package in Maverick: New

Bug description:
u-boot is able to define a complete pin-muxing setting.
On OMAP4 today, we rely on x-loader for this purpose.

So we shall either:
1) deactivate pin-muxing setting for omap4, or
2) or use it and ensure we have the latest pin-mux updates integrated

Option 1 was used here: http://dev.omapzoom.org/?p=bootloader/u-boot.git;a=commit;h=cc49b2f4915bb550294b8c74f292e81cfdb11f4d

Today for example, the pin-mux for GPMC_A22 is not properly set in u-boot, resulting in non-functional BT feature.
For this specific BT issue, the correct pin-mux is described in this x-loader patch (included into x-loader-omap4 package):
http://gitorious.org/pandaboard/x-loader/commit/5d05eafab768f4b88aae4f890fc26fd5eb3002ce