From patchwork Wed Mar 20 10:46:56 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manjunathappa, Prakash" X-Patchwork-Id: 2306571 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id 748FFDF24C for ; Wed, 20 Mar 2013 10:49:55 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UIGYD-0001D0-QF; Wed, 20 Mar 2013 10:47:21 +0000 Received: from bear.ext.ti.com ([192.94.94.41]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UIGXw-00019O-Rv for linux-arm-kernel@lists.infradead.org; Wed, 20 Mar 2013 10:47:06 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id r2KAkst9009489; Wed, 20 Mar 2013 05:46:54 -0500 Received: from DBDE71.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id r2KAkq5c010743; Wed, 20 Mar 2013 16:16:52 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by DBDE71.ent.ti.com (172.24.170.149) with Microsoft SMTP Server id 14.1.323.3; Wed, 20 Mar 2013 16:16:51 +0530 Received: from ucmsshproxy.india.ext.ti.com (dbdp20.itg.ti.com [172.24.170.38]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with SMTP id r2KAkpTY019554; Wed, 20 Mar 2013 16:16:51 +0530 Received: from symphony.india.ext.ti.com (unknown [192.168.247.13]) by ucmsshproxy.india.ext.ti.com (Postfix) with ESMTP id 44E42158002; Wed, 20 Mar 2013 16:16:51 +0530 (IST) Received: from ubuntu-psp-linux.india.ext.ti.com (ubuntu-psp-linux [192.168.247.46]) by symphony.india.ext.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id r2KAkoR24175; Wed, 20 Mar 2013 16:16:50 +0530 (IST) From: "Manjunathappa, Prakash" To: , Subject: [PATCH v4 2/5] spi/davinci: add DT binding documentation Date: Wed, 20 Mar 2013 16:16:56 +0530 Message-ID: <1363776419-10563-3-git-send-email-prakash.pm@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1363776419-10563-1-git-send-email-prakash.pm@ti.com> References: <1363776419-10563-1-git-send-email-prakash.pm@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130320_064705_011077_3A0BDD20 X-CRM114-Status: GOOD ( 13.16 ) X-Spam-Score: -9.4 (---------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-9.4 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [192.94.94.41 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -2.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux@arm.linux.org.uk, linux-doc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, nsekhar@ti.com, rob.herring@calxeda.com, grant.likely@secretlab.ca, "Manjunathappa, Prakash" , Murali Karicheri , rob@landley.net, hs@denx.de, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Murali Karicheri Add binding documentation for spi-davinci module. [prakash.pm@ti.com: Follow DT naming convention for compatible property] Signed-off-by: Murali Karicheri Reviewed-by: Grant Likely Reviewed-by: Sekhar Nori Signed-off-by: Manjunathappa, Prakash --- Since v3: Changed the commit message and fixed alignment issues. .../devicetree/bindings/spi/spi-davinci.txt | 51 ++++++++++++++++++++ 1 files changed, 51 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/spi/spi-davinci.txt diff --git a/Documentation/devicetree/bindings/spi/spi-davinci.txt b/Documentation/devicetree/bindings/spi/spi-davinci.txt new file mode 100644 index 0000000..6d0ac8d --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-davinci.txt @@ -0,0 +1,51 @@ +Davinci SPI controller device bindings + +Required properties: +- #address-cells: number of cells required to define a chip select + address on the SPI bus. Should be set to 1. +- #size-cells: should be zero. +- compatible: + - "ti,dm6441-spi" for SPI used similar to that on DM644x SoC family + - "ti,da830-spi" for SPI used similar to that on DA8xx SoC family +- reg: Offset and length of SPI controller register space +- num-cs: Number of chip selects +- ti,davinci-spi-intr-line: interrupt line used to connect the SPI + IP to the interrupt controller within the SoC. Possible values + are 0 and 1. Manual says one of the two possible interrupt + lines can be tied to the interrupt controller. Set this + based on a specifc SoC configuration. +- interrupts: interrupt number mapped to CPU. +- clocks: spi clk phandle + +Example of a NOR flash slave device (n25q032) connected to DaVinci +SPI controller device over the SPI bus. + +spi0:spi@20BF0000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "ti,dm6446-spi"; + reg = <0x20BF0000 0x1000>; + num-cs = <4>; + ti,davinci-spi-intr-line = <0>; + interrupts = <338>; + clocks = <&clkspi>; + + flash: n25q032@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,m25p32"; + spi-max-frequency = <25000000>; + reg = <0>; + + partition@0 { + label = "u-boot-spl"; + reg = <0x0 0x80000>; + read-only; + }; + + partition@1 { + label = "test"; + reg = <0x80000 0x380000>; + }; + }; +};