From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Coquelin Subject: Re: [STLinux Kernel] [PATCH v3 0/4] spi: st: New driver for ST's SPI Controller Date: Mon, 8 Dec 2014 14:53:39 +0100 Message-ID: <5485AD63.6090308@st.com> References: <1418043214-14324-1-git-send-email-lee.jones@linaro.org> <11694915.sCOqLZA7N1@wuerfel> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit Cc: , , , , , To: Arnd Bergmann , Lee Jones Return-path: In-Reply-To: <11694915.sCOqLZA7N1@wuerfel> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: 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-F5mvAk5X5gdBDgjK7y7TUQ@public.gmane.org > http://www.stlinux.com/mailman/listinfo/kernel -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html