linux-kernel - Re: [PATCH V2 3/3] nvmem: imx-ocotp: handling clock

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Date:	Tue, 10 May 2016 11:31:45 +0100
From:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:	Peng Fan <van.freenix@...il.com>
Cc:	shawnguo@...nel.org, maxime.ripard@...e-electrons.com,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 3/3] nvmem: imx-ocotp: handling clock



On 09/05/16 13:41, Peng Fan wrote:
> Hi Srinivas,
>
> On Mon, May 09, 2016 at 01:28:14PM +0100, Srinivas Kandagatla wrote:
>> Thanks for the Ping, I totally missed this thread.
>>
>> On 20/04/16 18:26, Peng Fan wrote:
>>> Before access ocotp nvmem area, the clock should be enabled.
>>> Or, `hexdump nvmem` will hang the system. So, use such flow:
>>> "
>>>    1. clock_enable_prepare
>>>    2. read nvmem ocotp area
>>>    3. clock_disable_unprepare
>>> "
>>>
>>> Signed-off-by: Peng Fan <van.freenix@...il.com>
>>> Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>>> Cc: Maxime Ripard <maxime.ripard@...e-electrons.com>
>>> Cc: Shawn Guo <shawnguo@...nel.org>
>>> ---
>>>
>>> V2:
>>>   Follow Fabio's comments, check return value of clk_prepare_enable
>>>
>>>   drivers/nvmem/imx-ocotp.c | 16 +++++++++++++++-
>>>   1 file changed, 15 insertions(+), 1 deletion(-)
>>
>> Changes to the driver looks good to me,
>> Only one comment, As the clock property is now made mandatory, you should
>> update the dt-bindings with this info too.
>
> In Documentation/devicetree/bindings/nvmem/imx-ocotp.txt,
> the clock property is already marked Required properties:

Ok, I can take this patch, dt patch should go via the dt maintainers.

thanks,
--srini