Messages in this thread | | | Date | Wed, 04 Mar 2015 09:00:39 +0100 | From | leroy christophe <> | Subject | Re: [PATCH] spi: fsl-spi: use of_iomap() to map parameter ram on CPM1 |
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Le 03/03/2015 19:44, Mark Brown a écrit : > On Thu, Feb 26, 2015 at 05:11:42PM +0100, Christophe Leroy wrote: >> 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 ?
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