From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Molton Date: Tue, 03 Sep 2013 16:55:02 +0000 Subject: [PATCH v1] EMMA SPI driver Message-Id: <1378227303-18795-1-git-send-email-ian.molton@codethink.co.uk> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org Hi folks, This is a first cut at SPI for the EMEV2 (1?) platform. The driver works on our hardware, however we have an unusual chipselect mux. I've replaced that with a pure GPIO based chipselect option in the driver, which would allow us to model the MUX as a gpiochip on our board. Sadly, I do not have the time to work further on this, so this part is merely compile tested. I've had no problems running 4 slaves on GPIO chipselects (via the mux) at 1.5MHz -Ian