From patchwork Sun Jul 12 01:13:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Sperl X-Patchwork-Id: 6771661 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7F09F9F3D1 for ; Sun, 12 Jul 2015 01:14:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 840392063C for ; Sun, 12 Jul 2015 01:14:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 603E22062D for ; Sun, 12 Jul 2015 01:14:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752092AbbGLBN7 (ORCPT ); Sat, 11 Jul 2015 21:13:59 -0400 Received: from 212-186-180-163.dynamic.surfer.at ([212.186.180.163]:54279 "EHLO cgate.sperl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752091AbbGLBN6 (ORCPT ); Sat, 11 Jul 2015 21:13:58 -0400 Received: from raspb.intern.sperl.org (account martin@sperl.org [10.10.10.32] verified) by sperl.org (CommuniGate Pro SMTP 6.1.2) with ESMTPSA id 6340445; Sun, 12 Jul 2015 01:13:55 +0000 From: kernel@martin.sperl.org To: Stephen Warren , Lee Jones , Mark Brown , devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-spi@vger.kernel.org Cc: Martin Sperl Subject: [PATCH v3 2/2] dt: brcm, bcm2835-aux-spi: add binding documentation for new spi-bcm2835aux Date: Sun, 12 Jul 2015 01:13:36 +0000 Message-Id: <1436663617-3056-2-git-send-email-kernel@martin.sperl.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1436663617-3056-1-git-send-email-kernel@martin.sperl.org> References: <1436663617-3056-1-git-send-email-kernel@martin.sperl.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Martin Sperl Document the necessary device-tree bindings of the spi-bcm2835aux driver. Signed-off-by: Martin Sperl --- .../bindings/spi/brcm,bcm2835-aux-spi.txt | 46 ++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt Changelog: V1->V2: fixed typo added cs-gpios V2->V3: added reference to spi-bus in cs-gpios added required additional config for syscon -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt new file mode 100644 index 0000000..ce5f3be --- /dev/null +++ b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt @@ -0,0 +1,46 @@ +Broadcom BCM2835 auxiliar SPI1/2 controller + +The BCM2835 contains two forms of SPI master controller, one known simply as +SPI0, and the other known as the "Universal SPI Master"; part of the +auxiliary block. This binding applies to the SPI1/2 controller. + +Required properties: +- compatible: Should be "brcm,bcm2835-aux-spi". +- reg: Should contain register location and length for the spi block + as well as for the common aux block control +- interrupts: Should contain shared interrupt of the aux block +- clocks: The clock feeding the SPI controller. +- cs-gpios: the cs-gpios (native cs is NOT supported) + see also spi-bus.txt +- syscon: the syscon config entry to handle the shared + register access by multiple drivers + +Example: + +spi1@7e215080 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e215080 0x40>; + interrupts = <1 29>; + clocks = <&clk_spi>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>; + syscon = <&aux_syscon>; +}; + +spi2@7e2150c0 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e2150c0 0x40>; + interrupts = <1 29>; + clocks = <&clk_spi>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>; + syscon = <&aux_syscon>; +}; + +/* the necessary syscon config referenced above */ +aux_syscon: aux_syscon@0x7e215000 { + compatible = "syscon"; + reg = <0x7e215000 0x08>; +};