linux-kernel - Re: [PATCH V2 RESEND] clk: mxs: Fix invalid 32-bit access to frac registers

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Date:	Wed, 11 Feb 2015 14:58:30 -0200
From:	Fabio Estevam <festevam@...il.com>
To:	Stefan Wahren <stefan.wahren@...e.com>
Cc:	Sascha Hauer <kernel@...gutronix.de>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Shawn Guo <shawn.guo@...aro.org>,
	Mike Turquette <mturquette@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Marek Vasut <marex@...x.de>, Zhi Li <lznuaa@...il.com>
Subject: Re: [PATCH V2 RESEND] clk: mxs: Fix invalid 32-bit access to frac registers

Hi Stefan,

On Tue, Feb 10, 2015 at 7:24 PM, Stefan Wahren <stefan.wahren@...e.com> wrote:
> Hi Fabio,
>
>> Fabio Estevam <festevam@...il.com> hat am 10. Februar 2015 um 16:06
>> geschrieben:
>>
>>
>> Hi Stefan,
>>
>> On Tue, Feb 10, 2015 at 11:55 AM, Stefan Wahren <stefan.wahren@...e.com>
>> wrote:
>>
>> > Could you apply only the clk-imx28.c part of my patch and see what happens?
>>
>> If I apply only the clk-imx28.c part of your patch I can successfully
>> probe the SPI NOR.
>
> thanks this is very helpful. I built the linux-next for my Duckbill and add the
> SSP2 section from imx28-evk.dts into imx28-duckbill.dts.
>
> Without my patch i get the following for HW_CLKCTRL_FRAC0:
>
> ./memwatch -a 0x800401B0
>
> 0x800401b0: 0x5e5b5513
>
> With my patch i get:
>
> ./memwatch -a 0x800401B0
>
> 0x800401b0: 0x5e1b5513

I always get 0x5e5b5513 with or without your patch.
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