[U-Boot] [PATCH] regmap: add support for address cell 2

[Kever Yang <kever.yang@rock-chips.com>]

Hi Simon,

On 02/17/2017 04:43 AM, Simon Glass wrote:
> Hi Kever,
>
> On 13 February 2017 at 01:28, Kever Yang <kever.yang@rock-chips.com> wrote:
>> ARM64 is using 64bit address which address cell is 2 instead of 1,
>> update to support it when of-platdata enabled.
>>
>> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
>> ---
>>
>>   drivers/core/regmap.c | 20 ++++++++++++++++++--
>>   1 file changed, 18 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
>> index c68bcba..a1c0983 100644
>> --- a/drivers/core/regmap.c
>> +++ b/drivers/core/regmap.c
>> @@ -39,6 +39,16 @@ static struct regmap *regmap_alloc_count(int count)
>>   }
>>
>>   #if CONFIG_IS_ENABLED(OF_PLATDATA)
>> +u64 fdtdec_get_number(const u32 *ptr, unsigned int cells)
> This name is already used and seems misleading. How about of_plat_get_number()?

Yes, of_plat_get_number() is better, thanks.
>
>> +{
>> +       u64 number = 0;
>> +
>> +       while (cells--)
>> +               number = (number << 32) | (*ptr++);
>> +
>> +       return number;
>> +}
>> +
>>   int regmap_init_mem_platdata(struct udevice *dev, u32 *reg, int count,
>>                               struct regmap **mapp)
>>   {
>> @@ -48,13 +58,19 @@ int regmap_init_mem_platdata(struct udevice *dev, u32 *reg, int count,
>>          map = regmap_alloc_count(count);
>>          if (!map)
>>                  return -ENOMEM;
>> -
>> +#ifdef CONFIG_ARM64
> Can you use #ifdef CONFIG_PHYS_64BIT?

OK, will update in next version.

Thanks,
- Kever
>
>> +       map->base = fdtdec_get_number(reg, 2);
>> +       for (range = map->range; count > 0; reg += 4, range++, count--) {
>> +               range->start = fdtdec_get_number(reg, 2);
>> +               range->size = fdtdec_get_number(reg + 2, 2);
>> +       }
>> +#else
>>          map->base = *reg;
>>          for (range = map->range; count > 0; reg += 2, range++, count--) {
>>                  range->start = *reg;
>>                  range->size = reg[1];
>>          }
>> -
>> +#endif
>>          *mapp = map;
>>
>>          return 0;
>> --
>> 1.9.1
>>
> Regards,
> Simon
>
>
>