linux-kernel - Re: [PATCH 2/4] pch_uart: Add Fish River Island II uart clock quirks

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Message-ID: <4F480E6B.90301@linux.intel.com>
Date:	Fri, 24 Feb 2012 14:25:47 -0800
From:	Darren Hart <dvhart@...ux.intel.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Tomoya MORINAGA <tomoya.rohm@...il.com>,
	Feng Tang <feng.tang@...el.com>,
	Alan Cox <alan@...ux.intel.com>, linux-serial@...r.kernel.org
Subject: Re: [PATCH 2/4] pch_uart: Add Fish River Island II uart clock quirks



On 02/24/2012 01:53 PM, Greg Kroah-Hartman wrote:
> On Wed, Feb 22, 2012 at 01:46:06AM -0800, Darren Hart wrote:
>>
>>
>> On 02/22/2012 12:52 AM, Alan Cox wrote:
>>>> +	/* Setup UART clock, checking for board specific clocks. */
>>>> +	uartclk = DEFAULT_UARTCLK;
>>>> +
>>>> +	board_name = dmi_get_system_info(DMI_BOARD_NAME);
>>>> +	if (board_name && strstr(board_name, "CM-iTC"))
>>>> +		uartclk = CMITC_UARTCLK;
>>>> +
>>>> +	board_name = dmi_get_system_info(DMI_PRODUCT_NAME);
>>>> +	if (board_name && strstr(board_name, "Fish River Island II"))
>>>> +		uartclk = FRI2_UARTCLK;
>>>> +
>>>> +	port->uartclk = uartclk;
>>>
>>> This is confusing, you load product name into a variable called
>>> board_name ?? perhaps "name" would be clearer ?
>>
>> OK, done.
> 
> "Done" where?  Is there a newer patch series I should be looking at
> here to apply?  I'm guessing I can ignore this one, right?
> 
> consider it ignored :)

I have the V2 patch series here, tested it, was going to send it today
.... then received a new revision of the hardware/firmware which hides
the PCI device and the UART is driven by the 8250 driver and requires me
to use 3318 as the baud ..... ***sigh***. I'm not sure what the right
thing is to do right now. I'm going to have a conversation with the
hardware manufacturer and the TWO firmware teams I'm working with.

If anyone has experience with this sort of mess and would like to offer
a recommended course of action, I'm all ears.
-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel
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