Messages in this thread | | | Date | Thu, 14 Jun 2012 19:57:32 +0100 | From | Lee Jones <> | Subject | Re: [PATCH 09/14] i2c: Add Device Tree support to the Nomadik I2C driver |
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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 Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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