Le 03/03/2015 19:44, Mark Brown a écrit :

On Thu, Feb 26, 2015 at 05:11:42PM +0100, Christophe Leroy wrote:

quoted

On CPM2, the SPI parameter RAM is dynamically allocated in the dualport RAM
whereas in CPM1, it is statically allocated to a default address with
capability to relocate it somewhere else via the use of CPM micropatch.
The address of the parameter RAM is given by the boot loader and expected
to be mapped via of_iomap()

Why are we using of_iomap() rather than a generic I/O mapping function
here?

Euh ...

because all drivers for powerpc seems to be using of_iomap(), as on 
powerpc the HW is described by the bootloader in a OF device tree.
Today, of_iomap() is at least used in FSL SPI, FSL UART, SPI mpc52xx, 
UART mpc52xx, i2c-mpc, i2c-cpm, freescale ethernet drivers, etc ....

Is it not correct ?