[PATCH V3 10/18] ARM: OMAP2+: Add function to read GPMC settings from device-tree

[Jon Hunter]

On 03/17/2013 12:24 AM, Ezequiel Garcia wrote:
> Hi Jon,
> 
> I have some tiny nitpicks...
> 
> On Fri, Mar 15, 2013 at 10:21:08AM -0500, Jon Hunter wrote:
>> Adds a function to read the various GPMC chip-select settings from
>> device-tree and store them in the gpmc_settings structure.
>>
>> Update the GPMC device-tree binding documentation to describe these
>> options.
>>
>> Signed-off-by: Jon Hunter <jon-hunter at ti.com>
>> ---
>>  Documentation/devicetree/bindings/bus/ti-gpmc.txt |   23 ++++++++++
>>  arch/arm/mach-omap2/gpmc.c                        |   49 +++++++++++++++++++++
>>  arch/arm/mach-omap2/gpmc.h                        |    2 +
>>  3 files changed, 74 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/bus/ti-gpmc.txt b/Documentation/devicetree/bindings/bus/ti-gpmc.txt
>> index 5ddb2e9..6fde1cf 100644
>> --- a/Documentation/devicetree/bindings/bus/ti-gpmc.txt
>> +++ b/Documentation/devicetree/bindings/bus/ti-gpmc.txt
>> @@ -65,6 +65,29 @@ The following are only applicable to OMAP3+ and AM335x:
>>   - gpmc,wr-access
>>   - gpmc,wr-data-mux-bus
>>  
>> +GPMC chip-select settings properties for child nodes. All are optional.
>> +
>> +- gpmc,burst-length	Page/burst length. Must be 4, 8 or 16.
>> +- gpmc,burst-wrap	Enables wrap bursting
>> +- gpmc,burst-read	Enables read page/burst mode
>> +- gpmc,burst-write	Enables write page/burst mode
>> +- gpmc,device-nand	Device is NAND
>> +- gpmc,device-width	Total width of device(s) connected to a GPMC
>> +			chip-select in bytes. The GPMC supports 8-bit
>> +			and 16-bit devices and so this property must be
>> +			1 or 2.
>> +- gpmc,mux-add-data	Address and data multiplexing configuration.
>> +			Valid values are 1 for address-address-data
>> +			multiplexing mode and 2 for address-data
>> +			multiplexing mode.
>> +- gpmc,sync-read	Enables synchronous read. Defaults to asynchronous
>> +			is this is not set.
>> +- gpmc,sync-write	Enables synchronous writes. Defaults to asynchronous
>> +			is this is not set.
>> +- gpmc,wait-pin		Wait-pin used by client. Must be less than
>> +			"gpmc,num-waitpins".
>> +- gpmc,wait-on-read	Enables wait monitoring on reads.
>> +- gpmc,wait-on-write	Enables wait monitoring on writes.
>>  
>>  Example for an AM33xx board:
>>  
>> diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
>> index 3ec1937..1e7eef3 100644
>> --- a/arch/arm/mach-omap2/gpmc.c
>> +++ b/arch/arm/mach-omap2/gpmc.c
>> @@ -1190,6 +1190,55 @@ static struct of_device_id gpmc_dt_ids[] = {
>>  };
>>  MODULE_DEVICE_TABLE(of, gpmc_dt_ids);
>>  
>> +/**
>> + * gpmc_read_settings_dt - read gpmc settings from device-tree
>> + * @np:		pointer to device-tree node for a gpmc child device
>> + * @p:		pointer to gpmc settings structure
>> + *
>> + * Reads the GPMC settings for a GPMC child device from device-tree and
>> + * stores them in the GPMC settings structure passed. The GPMC settings
>> + * structure is initialise to zero by this function and so any previously
> 
> s/initialise/initialized ?

Thanks will add the "d". However, "initialise" is correct British
English ;-)

>> + * stored settings will be clearer.
> 
> s/clearer/cleared ?
> 
> I'm not an english native speaker,
> so please bare with me if I'm wrong on these...

You are right here too. Will fix thanks!

Jon