Re: [PATCH v2] regmap: mmio: add config option to allow relaxed MMIO accesses

2020-10-26 Thread Mark Brown
On Wed, 14 Oct 2020 23:30:24 +0300, Adrian Ratiu wrote: > On some platforms (eg armv7 due to the CONFIG_ARM_DMA_MEM_BUFFERABLE) > MMIO R/W operations always add memory barriers which can increase load, > decrease battery life or in general reduce performance unnecessarily > on devices which access

[PATCH v2] regmap: mmio: add config option to allow relaxed MMIO accesses

2020-10-14 Thread Adrian Ratiu
On some platforms (eg armv7 due to the CONFIG_ARM_DMA_MEM_BUFFERABLE) MMIO R/W operations always add memory barriers which can increase load, decrease battery life or in general reduce performance unnecessarily on devices which access a lot of configuration registers and where ordering does not