Re: [PATCH] i2c-ocores: add common clock support

From: Max Filippov
Date: Thu Jan 22 2015 - 15:36:34 EST


On Thu, Jan 22, 2015 at 9:57 PM, Wolfram Sang <wsa@xxxxxxxxxxxxx> wrote:
> 2?) a new binding is present to specify the IP clock speed:
> - is this needed? is somebody using the driver without CCF?
> - if so, the new binding is parsed and evaluated
> - I couldn't find an existing binding to specify a clock speed.
> Please have a look, too. Otherwise we need to introduce sth
> like "opencores,ip-clock-khz" probably.
> - "clock-frequency" is describing the bus speed as usual

ePAPR document says that clock-frequency 'specifies the frequency
of a clock in Hz', not identifying which clock. Outside i2c drivers
subtree it is commonly used to specify input clock frequency of IP
blocks, even for bus controllers, e.g. SPI.

--
Thanks.
-- Max
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