On 14/06/12 19:36, Mark Brown wrote:
On Wed, Jun 13, 2012 at 01:28:17PM +0100, Lee Jones wrote:
Device Tree. However, we have just as much control by keeping them
in separate structs in the C file and selecting the right one using
the compatible sting.
You're not understanding Linus' point. The compatible string isn't
useful here because properties like the maximum clock rate of the bus
depend on the board design, not the silicon. The controller may be
perfectly happy to run at a given rate but other devices on the bus or
the electrical engineering of the PCB itself may restrict this further.
And you're not understanding mine. ;)
You can have multiple compatible strings for a single driver. Which one
you reference from the Device Tree will dictate which group of settings
are used, including variation of clock rates.
--
Lee Jones
Linaro ST-Ericsson Landing Team Lead
M: +44 77 88 633 515
Linaro.org │ Open source software for ARM SoCs
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