From patchwork Wed Apr 8 18:04:31 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Richardson X-Patchwork-Id: 6181981 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4ACC6BF4A6 for ; Wed, 8 Apr 2015 18:02:46 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 39F8F20389 for ; Wed, 8 Apr 2015 18:02:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 00A462039C for ; Wed, 8 Apr 2015 18:02:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754702AbbDHSCm (ORCPT ); Wed, 8 Apr 2015 14:02:42 -0400 Received: from mail-gw2-out.broadcom.com ([216.31.210.63]:27436 "EHLO mail-gw2-out.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754650AbbDHSCk (ORCPT ); Wed, 8 Apr 2015 14:02:40 -0400 X-IronPort-AV: E=Sophos;i="5.11,545,1422950400"; d="scan'208";a="61580555" Received: from irvexchcas07.broadcom.com (HELO IRVEXCHCAS07.corp.ad.broadcom.com) ([10.9.208.55]) by mail-gw2-out.broadcom.com with ESMTP; 08 Apr 2015 11:07:38 -0700 Received: from IRVEXCHSMTP3.corp.ad.broadcom.com (10.9.207.53) by IRVEXCHCAS07.corp.ad.broadcom.com (10.9.208.55) with Microsoft SMTP Server (TLS) id 14.3.174.1; Wed, 8 Apr 2015 11:02:40 -0700 Received: from mail-irva-13.broadcom.com (10.10.10.20) by IRVEXCHSMTP3.corp.ad.broadcom.com (10.9.207.53) with Microsoft SMTP Server id 14.3.174.1; Wed, 8 Apr 2015 11:02:39 -0700 Received: from lbrmn-lnxub108.corp.ad.broadcom.com (unknown [10.136.4.151]) by mail-irva-13.broadcom.com (Postfix) with ESMTP id C0E9D40FEA; Wed, 8 Apr 2015 11:00:56 -0700 (PDT) From: Jonathan Richardson To: Mark Brown , Dmitry Torokhov , Anatol Pomazau CC: Jonathan Richardson , Scott Branden , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , , , bcm-kernel-feedback-list , , Rafal Milecki Subject: [PATCH v2 1/5] ARM: dts: Add binding for Broadcom MSPI driver. Date: Wed, 8 Apr 2015 11:04:31 -0700 Message-ID: <1428516275-12819-2-git-send-email-jonathar@broadcom.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1428516275-12819-1-git-send-email-jonathar@broadcom.com> References: <1428516275-12819-1-git-send-email-jonathar@broadcom.com> MIME-Version: 1.0 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 Signed-off-by: Jonathan Richardson --- .../devicetree/bindings/spi/brcm,mspi-spi.txt | 36 ++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt diff --git a/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt b/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt new file mode 100644 index 0000000..8c10a39 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt @@ -0,0 +1,36 @@ +Broadcom MSPI controller + +Required properties: +- compatible: Must be either "brcm,mspi" or "brcm,bcma-mspi". Use + "brcm,bcma-mspi" for controllers on a bcma bus and "brcm,mspi" otherwise. + +- reg: Physical base address and length of the controller's registers. + +- #address-cells: should be 1. + +- #size-cells: should be 0. + +Optional properties: +- clocks: The MSPI reference clock. If not provided then it is assumed a clock + is enabled by default and no control of clock-frequency (see below) is + possible. + +- clock-names: The name of the reference clock. + +- clock-frequency: Desired frequency of the clock. This will set the serial + clock baud rate (SPBR) based on the reference clock frequency. The frequency + of the SPBR is mspi_clk / (2 * SPBR) where SPBR is a value between 1-255 + determined by the desired 'clock-frequency'. If not provided then the default + baud rate of the controller is used. + +Example: + +mspi@18047000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "brcm,mspi"; + reg = <0x18047000 0x1000>; + clocks = <&axi41_clk>; + clock-names = "mspi_clk"; + clock-frequency = <12500000>; +};