From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christophe Leroy Subject: [PATCH] SPI: Set SPI bits per words in an OF DeviceTree SPI node Date: Wed, 7 Aug 2013 17:44:45 +0200 Message-ID: <201308071544.r77Fij2Y006649@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Grant Likely , Rob Herring Cc: stigge-uj/7R2tJ6VmzQB+pC5nmwQ@public.gmane.org, spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org This patch allows to set up the bits per word together with all other SPI parameters in the SPI Node of the OF device tree In the node, you then have to include the 'spi-bits' property. Exemple: fpga-loader@7 { compatible = "cs,fpga-loader"; spi-max-frequency = <10000000>; reg = <7>; spi-cs-high; spi-bits = <16>; }; Signed-off-by: Christophe Leroy --- linux-3.8.13/drivers/spi/spi.c 2013-05-11 22:57:46.000000000 +0200 +++ linux/drivers/spi/spi.c 2013-08-06 18:19:30.000000000 +0200 @@ -870,6 +870,11 @@ if (of_find_property(nc, "spi-3wire", NULL)) spi->mode |= SPI_3WIRE; + /* Bits per word */ + prop = of_get_property(nc, "spi-bits", &len); + if (prop && len >= sizeof(*prop)) + spi->bits_per_word = prop[0]; + /* Device speed */ prop = of_get_property(nc, "spi-max-frequency", &len); if (!prop || len < sizeof(*prop)) { ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk