From patchwork Thu Nov 19 08:37:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhong Kaihua X-Patchwork-Id: 7655941 Return-Path: X-Original-To: patchwork-linux-arm@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 7F38EBF90C for ; Thu, 19 Nov 2015 08:41:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B1ACE2041F for ; Thu, 19 Nov 2015 08:41:08 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E3DEE2041E for ; Thu, 19 Nov 2015 08:41:07 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZzKju-00038z-85; Thu, 19 Nov 2015 08:38:46 +0000 Received: from szxga03-in.huawei.com ([119.145.14.66]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZzKjf-00032p-7Z for linux-arm-kernel@lists.infradead.org; Thu, 19 Nov 2015 08:38:32 +0000 Received: from 172.24.1.51 (EHLO szxeml426-hub.china.huawei.com) ([172.24.1.51]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BRG84328; Thu, 19 Nov 2015 16:37:34 +0800 (CST) Received: from vm167-7.huawei.com (10.177.167.7) by szxeml426-hub.china.huawei.com (10.82.67.181) with Microsoft SMTP Server id 14.3.235.1; Thu, 19 Nov 2015 16:37:15 +0800 From: Zhong Kaihua To: , , , , , , , , , , , , , , , Subject: [PATCH V2 1/2] dt-bindings: spi: Documentation for Hi6220 spi driver Date: Thu, 19 Nov 2015 16:37:08 +0800 Message-ID: <1447922229-60552-1-git-send-email-zhongkaihua@huawei.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Originating-IP: [10.177.167.7] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020201.564D8A52.0052, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 5247b73ac6b331c81daa6d9e89601e62 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151119_003831_623765_E331D713 X-CRM114-Status: GOOD ( 11.99 ) X-Spam-Score: -4.8 (----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dan.zhao@hisilicon.com, w.f@huawei.com, suzhuangluan@hisilicon.com, kong.kongxinwei@hisilicon.com, zhongkaihua@huawei.com, puck.chen@hisilicon.com, kkojima@drone.co.jp Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 dt-bindings: spi: Documentation for Hi6220 spi driver Signed-off-by: Zhong Kaihua --- .../devicetree/bindings/spi/spi-hi6220.txt | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-hi6220.txt diff --git a/Documentation/devicetree/bindings/spi/spi-hi6220.txt b/Documentation/devicetree/bindings/spi/spi-hi6220.txt new file mode 100644 index 0000000..91aa169 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-hi6220.txt @@ -0,0 +1,45 @@ +Hi6220 SPI controller + +Required properties: +- compatible : "arm,pl022", "arm,primecell" +- reg : Offset and length of the register set for the device +- interrupts : Should contain SPI controller interrupt +- num-cs : total number of chipselects + +Required Board Specific Properties: + +- #address-cells: should be 1. +- #size-cells: should be 0. + +Optional properties: +- cs-gpios : should specify GPIOs used for chipselects. + The gpios will be referred to as reg = in the SPI child nodes. + If unspecified, a single SPI device without a chip select can be used. +- dmas : Two or more DMA channel specifiers following the convention outlined + in bindings/dma/dma.txt +- dma-names: Names for the dma channels, if present. There must be at + least one channel named "tx" for transmit and named "rx" for + receive. + +Example: + spi_0: spi@f7106000 { + compatible = "arm,pl022", "arm,primecell"; + reg = <0x0 0xf7106000 0x0 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + interrupts = <0 50 4>; + bus-id = <0>; + enable-dma = <1>; + dmas = <&dma0 12 &dma0 13>; + dma-names = "rx", "tx"; + + clocks = <&clock_sys HI6220_SPI_CLK>; + clock-names = "apb_pclk"; + pinctrl-names = "default"; + pinctrl-0 = <&spi0_pmx_func &spi0_cfg_func>; + num-cs = <4>; + cs-gpios = <&gpio6 2 0>, <&gpio6 3 0>, <&gpio6 4 0>, <&gpio6 5 0>; + + status = "ok"; + }; +