linux-kernel - Re: [PATCH v5 2/2] memory: pl353: Add driver for arm pl353 static memory controller

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Date:	Fri, 3 Apr 2015 07:40:43 +0530
From:	punnaiah choudary kalluri <punnaia@...inx.com>
To:	Brian Norris <computersforpeace@...il.com>
Cc:	Punnaiah Choudary Kalluri <punnaiah.choudary.kalluri@...inx.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Rob Landley <rob@...dley.net>,
	"michal.simek@...inx.com" <michal.simek@...inx.com>,
	Grant Likely <grant.likely@...aro.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"jason@...edaemon.net" <jason@...edaemon.net>,
	"ezequiel.garcia@...e-electrons.com" 
	<ezequiel.garcia@...e-electrons.com>,
	Arnd Bergmann <arnd@...db.de>,
	David Woodhouse <dwmw2@...radead.org>,
	"artem.bityutskiy@...ux.intel.com" <artem.bityutskiy@...ux.intel.com>,
	"Gupta, Pekon" <pekon@...com>,
	"jussi.kivilinna@....fi" <jussi.kivilinna@....fi>,
	Alexandre Courbot <acourbot@...dia.com>,
	"Khoronzhuk, Ivan" <ivan.khoronzhuk@...com>,
	"joern@...fs.org" <joern@...fs.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	Punnaiah Choudary <kpc528@...il.com>
Subject: Re: [PATCH v5 2/2] memory: pl353: Add driver for arm pl353 static
 memory controller

Hi Brian,

  This driver has not been reviewed completely. I will address your comments
and send next set of patches.

Thanks,
Punnaiah

On Fri, Apr 3, 2015 at 2:28 AM, Brian Norris
<computersforpeace@...il.com> wrote:
> I'm not following the review of the 'memory' portions much, but has this
> gotten much review? I was looking at the MTD portions when I noticed an
> obvious issue below:
>
> On Tue, Jan 06, 2015 at 11:19:17PM +0530, Punnaiah Choudary Kalluri wrote:
>> Add driver for arm pl353 static memory controller. This controller is
>> used in xilinx zynq soc for interfacing the nand and nor/sram memory
>> devices.
>>
>> Signed-off-by: Punnaiah Choudary Kalluri <punnaia@...inx.com>
>> ---
>> Changes in v5:
>> - Added pl353_smc_get_clkrate function, made pl353_smc_set_cycles as public
>>   API
>> - Removed nand timing parameter initialization and moved it to nand driver
>> Changes in v4:
>> - Modified driver to support multiple instances
>> - Used sleep instaed of busywait for delay
>> Changes in v3:
>> - None
>> Changes in v2:
>> - Since now the timing parameters are in nano seconds, added logic to convert
>>   them to the cycles
>> ---
>>  drivers/memory/Kconfig           |    6 +
>>  drivers/memory/Makefile          |    1 +
>>  drivers/memory/pl353-smc.c       |  525 ++++++++++++++++++++++++++++++++++++++
>>  include/linux/memory/pl353-smc.h |   37 +++
>>  4 files changed, 569 insertions(+), 0 deletions(-)
>>  create mode 100644 drivers/memory/pl353-smc.c
>>  create mode 100644 include/linux/memory/pl353-smc.h
>>
>> diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
>> index 6d91c27..9d4880f 100644
>> --- a/drivers/memory/Kconfig
>> +++ b/drivers/memory/Kconfig
>> @@ -85,4 +85,10 @@ config FSL_IFC
>>       bool
>>       depends on FSL_SOC
>>
>> +config PL353_SMC
>> +     bool "ARM PL353 Static Memory Controller(SMC) driver"
>
> Space after 'Controller'. i.e.:
>
>         bool "ARM PL353 Static Memory Controller (SMC) driver"
>
>> +     default y
>
> We almost definitely don't want this to be 'default y', especially given
> that it would then be enabled on all ARM systems. Users could add it
> their configuration themselves if they want it, or you might add it to
> multi_v7_defconfig.
>
>> +     depends on ARM
>> +     help
>> +       This driver is for the ARM PL353 Static Memory Controller(SMC) module.
>
> Same spacing issue here.
>
>>  endif
>
> [...]
>
> Brian
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