Messages in this thread | | | Date | Mon, 8 Dec 2014 14:53:39 +0100 | From | Maxime Coquelin <> | Subject | Re: [STLinux Kernel] [PATCH v3 0/4] spi: st: New driver for ST's SPI Controller |
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On 12/08/2014 02:22 PM, Arnd Bergmann wrote: > On Monday 08 December 2014 12:53:30 Lee Jones wrote: >> This is a new driver which controls the SPI component of ST's >> Synchronous Serial Controller (SSC). >> > How does this related to the i2c driver for drivers/i2c/busses/i2c-st.c? > Could you have the same piece of hardware do one or the other mode > depending on pin configuration, or is each instance hardwired to > a particular mode? This is the same IP, that can be configured either in SPI or I2C.
> > Is there any code worth sharing between the two drivers? No, except a couple of registers, they are managed in a ways.
The way it is used, a single SSC instance can only be used either in SPI or I2C mode on a board, so I think it wouldn't make sense to create a MFD driver to manage it.
Kr, Maxime > > Arnd > > _______________________________________________ > Kernel mailing list > Kernel@stlinux.com > http://www.stlinux.com/mailman/listinfo/kernel
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