From: Sergei Shtylyov <sshtylyov@ru•mvista.com>
To: Stephen Neuendorffer <stephen.neuendorffer@xilinx•com>
Cc: linuxppc-dev@ozlabs•org, Pavel Kiryukhin <pkiryukhin@ru•mvista.com>
Subject: Re: [PATCH] booting-without-of: add Xilinx uart 16550.
Date: Mon, 18 Feb 2008 22:47:12 +0300 [thread overview]
Message-ID: <47B9E0C0.3090109@ru.mvista.com> (raw)
In-Reply-To: <20080215214018.EA724CB0046@mail174-sin.bigfish.com>
Hello.
Stephen Neuendorffer wrote:
>>>Instead of attempting to come up with a generic description
>>>of this, I recommend just naming it after the actual device instance;
>>>something like compatible="xlnx,opb-uart16550";
>> Well, that means that we'll need a to add a code which "glues" the chip to
>>8250.c driver... well, of_serial.c could be that glue layer if we add to it
>>the ability to recognize Xilinx UART... well, legacy_serial.c could be taught
>>that trick too...
>> Well, we could also add the new compatible, but still claim "ns16550"
>>compatibility...
> This actually makes more sense to me... I'd rather have the code set
> the reg-shift than have it explicitly set in the device tree anyway.
> The compatibility set should include (at the least):
> opb_uart16550_v1_00_c
> opb_uart16550_v1_00_d
> opb_uart16550_v1_00_e
> plb_uart16550_v1_00_c
> xps_uart16550_v1_00_a
Sounds like too much? Couldn't this be handled via the "model" prop?
> I think this is somewhat independent of Sergei's arguments that generic
> ns16550 devices should allow having a reg-shift set....
> Steve
WBR, Sergei
prev parent reply other threads:[~2008-02-18 19:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-15 13:40 [PATCH] booting-without-of: add Xilinx uart 16550 Pavel Kiryukhin
2008-02-15 17:08 ` Stephen Neuendorffer
2008-02-15 17:41 ` Pavel Kiryukhin
2008-02-15 17:46 ` Stephen Neuendorffer
2008-02-15 18:34 ` Milton Miller
2008-02-15 18:38 ` Grant Likely
2008-02-15 18:56 ` Sergei Shtylyov
2008-02-15 19:02 ` Grant Likely
2008-02-15 19:14 ` Sergei Shtylyov
2008-02-15 19:33 ` Grant Likely
2008-02-15 21:40 ` Stephen Neuendorffer
2008-02-18 19:47 ` Sergei Shtylyov [this message]
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