Messages in this thread | | | Date | Tue, 4 Mar 2014 09:20:17 -0800 | From | Sören Brinkmann <> | Subject | Re: [PATCH 1/2] i2c: Add driver for Cadence I2C controller |
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Hi Josh,
On Tue, 2014-03-04 at 11:04AM -0600, Josh Cartwright wrote: > On Fri, Feb 28, 2014 at 07:06:29PM -0800, S?ren Brinkmann wrote: > > On Fri, 2014-02-28 at 04:00PM -0800, Soren Brinkmann wrote: > > > Add a driver for the Cadence I2C controller. This controller is for > > > example found in Xilinx Zynq. > > > > > > Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> > > > --- > > > .../devicetree/bindings/i2c/i2c-cadence.txt | 21 + > > > MAINTAINERS | 1 + > > > drivers/i2c/busses/Kconfig | 7 + > > > drivers/i2c/busses/Makefile | 1 + > > > drivers/i2c/busses/i2c-cadence.c | 901 +++++++++++++++++++++ > > > 5 files changed, 931 insertions(+) > > > create mode 100644 Documentation/devicetree/bindings/i2c/i2c-cadence.txt > > > create mode 100644 drivers/i2c/busses/i2c-cadence.c > > > > > [...] > > > diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig > > > index f5ed03164d86..7806c1654068 100644 > > > --- a/drivers/i2c/busses/Kconfig > > > +++ b/drivers/i2c/busses/Kconfig > > > @@ -375,6 +375,13 @@ config I2C_BLACKFIN_TWI_CLK_KHZ > > > help > > > The unit of the TWI clock is kHz. > > > > > > +config I2C_CADENCE > > > + tristate "Cadence I2C Controller" > > > + depends on ARCH_ZYNQ > > This can be reduced to a dependency on COMMON_CLK only, I think. > > Do you really need to depend on COMMON_CLK? Most of the clk_* API's are > properly stubbed when !HAVE_CLK. I do. clk_register_notifier() is only available with COMMON_CLK. Alternatively those #ifdefs could go into the driver, but that wouldn't look nice :)
There is v2 on the list already, let's move the discussion there.
Sören
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