[U-Boot-Users] Patch: Support for PQ27e (8247/48/71/72) chips and MPC8272ADS board

[Yuli Barcohen]

>>>>> Kumar Gala writes:

    Kumar> Yuli, I agree with only enabling ports that will be used.  I
    Kumar> guess I would expect the port to be used in Linux.

If it's to be used in Linux but not in the U-Boot, let Linux initialise
it.

    Kumar> I'm working on an updated 2.6 SCC uart driver and realized
    Kumar> that I needed to enable the 2nd port in BCSR.  I had expected
    Kumar> that u-boot would have already handled it.

I see. In Arabella Linux, there is clear separation between boot and
kernel and between chip-specific and board-specific code. ADS-specific
file in Linux kernel is the place where the BCSR handling lives, so
we've got generic SCC UART driver and perform all the initialisations
(including board-specific BCSR) only when some code requests them.

    Kumar> Looking at the patch, I was wondering if there was any reason
    Kumar> to not enable both RS232 ports by default.

    Yuli> Only the console port was enabled before the patch. Is there
    Yuli> any reason for the patch to change this behaviour? Also, I see
    Yuli> no reason to enable any peripheral which isn't going to be
    Yuli> used.

-- 
========================================================================
 Yuli Barcohen       | Phone +972-9-765-1788 |  Software Project Leader
 yuli at arabellasw.com | Fax   +972-9-765-7494 | Arabella Software, Israel
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