Re: [PATCH] mfd: bd9571mwv: add volatile register to make DVFS work

[Marek Vasut]

On 11/09/2018 12:04 PM, Wolfram Sang wrote:
> On Wed, Oct 03, 2018 at 03:58:41PM +0200, Wolfram Sang wrote:
>> From: Dien Pham <dien.pham.ry@xxxxxxxxxxx>
>>
>> Because BD9571MWV_DVFS_MONIVDAC is not defined in the volatile table,
>> the physical register value is not updated by regmap and DVFS doesn't
>> work as expected. Fix it!
>>
>> Signed-off-by: Dien Pham <dien.pham.ry@xxxxxxxxxxx>
>> [wsa: rebase, add 'Fixes', reword commit message]
>> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
>> Fixes: d3ea21272094 ("mfd: Add ROHM BD9571MWV-M MFD PMIC driver")
>> ---
> 
> Any blockers for this one?
> 
>>
>> Grabbed from the BSP and confirmed by the datasheet. The register is RO
>> and reflecting states depending on other registers.
>>
>>  drivers/mfd/bd9571mwv.c | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/mfd/bd9571mwv.c b/drivers/mfd/bd9571mwv.c
>> index 503979c81dae..fab3cdc27ed6 100644
>> --- a/drivers/mfd/bd9571mwv.c
>> +++ b/drivers/mfd/bd9571mwv.c
>> @@ -59,6 +59,7 @@ static const struct regmap_access_table bd9571mwv_writable_table = {
>>  };
>>  
>>  static const struct regmap_range bd9571mwv_volatile_yes_ranges[] = {
>> +	regmap_reg_range(BD9571MWV_DVFS_MONIVDAC, BD9571MWV_DVFS_MONIVDAC),
>>  	regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
>>  	regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INT),
>>  	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTREQ),
>> -- 

Makes sense,

Reviewed-by: Marek Vasut <marek.vasut@xxxxxxxxx>

-- 
Best regards,
Marek Vasut