Messages in this thread | | | Subject | Re: [RFC][PATCH] regmap: Drop CONFIG_64BIT checks from core | From | Marek Vasut <> | Date | Wed, 26 Jun 2019 13:20:17 +0200 |
| |
On 6/26/19 1:15 PM, Mark Brown wrote: > On Wed, Jun 26, 2019 at 01:31:16AM +0200, Marek Vasut wrote: >> Drop the CONFIG_64BIT checks from core regmap code, as it is well >> possible to access e.g. an SPI device with 64bit registers from a >> 32bit CPU. The CONFIG_64BIT checks are still left in place in the >> regmap mmio code however. > > The issue with 8 bit
byte
> registers was that we use unsigned long for > addresses and values and a 64 bit value won't fit in those on a 32 bit > system. Some of the bulk APIs will work but things like individual > register writes and the caches will have problems.
Good thing I sent this as RFC, I realized that shortly after too.
So, what would be the suggestion here ?
-- Best regards, Marek Vasut
| |