From patchwork Fri Jul 26 07:20:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "(Exiting) Baolin Wang" X-Patchwork-Id: 11060437 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6101214DB for ; Fri, 26 Jul 2019 07:21:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4691628A51 for ; Fri, 26 Jul 2019 07:21:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3ABB828A4F; Fri, 26 Jul 2019 07:21:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D211028A4F for ; Fri, 26 Jul 2019 07:21:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726489AbfGZHVp (ORCPT ); Fri, 26 Jul 2019 03:21:45 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:34168 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726443AbfGZHVo (ORCPT ); Fri, 26 Jul 2019 03:21:44 -0400 Received: by mail-pf1-f194.google.com with SMTP id b13so24068360pfo.1 for ; Fri, 26 Jul 2019 00:21:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=UKHcPnP1X/YH0KxOMapb8zoNNla2jhYhzX+lsHS5cTM=; b=E/8yDjb7ZXAoXz4rohf7xtU4fhLLX5e2g+HPtRaZkv3EEOnRi93Lc23PAFcSQlkXjb J3Wa6rERdfomrw2OTiK4FH5qYxtfwCfuIP5rQTWocufBjT6s+yyn1isAdW1mS7TBlhF9 zqljjj5O16ddI36qYavzuNIlDPSDILRII6NiiRPPmJihn6ZmtXZXEsUy2qxRn9toErIe 4pfyj+dW/0gFmCbyCGfQd+hC89i8hZK+dH8qwarrCFKd4U4csbslNRiqS39I2iAeb36O DbPPLxMS6drd93OWQxQEkAus7EIMyOpygAFaoynlbckmOxeAGcmfGvzwBIlPb3h08hLh 3cYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=UKHcPnP1X/YH0KxOMapb8zoNNla2jhYhzX+lsHS5cTM=; b=ay9neEl55h+ee6VWB/tOhTShTVv7Xp+9flsPBU6Zewz4cdPkMzihTUmxqJsg68ky7U zQp2asyBOhiWCWGXgDV0rum/K6Ye0x24rZSJQBhgw0O+YjOxQoXUpMXY5WsqhXTduKuX JAdupYhqMYR1YlPdXie3MaG22VV+POinef+uhk8HLzZX1ltrD6tlasktrO6HrVR4UdAD dmN1RgDdWfEaB/Phmcj/DaqOvzBTgekZk4Aa7P9qC8sRBMTPb42X86VhlhKYLwoN1I22 HByBA/sI2aXVnIiffbDEoZoHwqFlhfjBy2FuI8cGAU3sO3CjjpCJwzobsHJGKZqRSS9t HNiQ== X-Gm-Message-State: APjAAAWzur4fiB663QyFovRyzvcBJ4qpZjQqe0uKzqW6Y5s8AFfeb413 whnh2wx+p8KYQg3xPig2G6tTuQ== X-Google-Smtp-Source: APXvYqx0MzCJG7d9iPnuvF6O22gUq9ll3iEEBUmjoDkNejDovvr6c+hOVWesySnuyHKOJNCRdJYZtg== X-Received: by 2002:a63:b747:: with SMTP id w7mr36749242pgt.205.1564125704234; Fri, 26 Jul 2019 00:21:44 -0700 (PDT) Received: from baolinwangubtpc.spreadtrum.com ([117.18.48.82]) by smtp.gmail.com with ESMTPSA id o12sm39216152pjr.22.2019.07.26.00.21.40 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 26 Jul 2019 00:21:43 -0700 (PDT) From: Baolin Wang To: broonie@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, orsonzhai@gmail.com, zhang.lyra@gmail.com Cc: weicx@spreadst.com, sherry.zong@unisoc.com, baolin.wang@linaro.org, vincent.guittot@linaro.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/6] dt-bindings: spi: sprd: Change the hwlock support to be optional Date: Fri, 26 Jul 2019 15:20:53 +0800 Message-Id: <23d51f5d9c9cc647ad0c5a1fb950d3d9fb9c1303.1564125131.git.baolin.wang@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP No need to add hardware spinlock proctection due to add multiple msater channel, so change it to be optional in documentation. Signed-off-by: Baolin Wang --- .../devicetree/bindings/spi/spi-sprd-adi.txt | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt b/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt index 8de589b..2567c82 100644 --- a/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt +++ b/Documentation/devicetree/bindings/spi/spi-sprd-adi.txt @@ -25,18 +25,23 @@ data by ADI software channels at the same time, or two parallel routine of setti ADI registers will make ADI controller registers chaos to lead incorrect results. Then we need one hardware spinlock to synchronize between the multiple subsystems. +The new version ADI controller supplies multiple master channels for different +subsystem accessing, that means no need to add hardware spinlock to synchronize, +thus change the hardware spinlock support to be optional to keep backward +compatibility. + Required properties: - compatible: Should be "sprd,sc9860-adi". - reg: Offset and length of ADI-SPI controller register space. -- hwlocks: Reference to a phandle of a hwlock provider node. -- hwlock-names: Reference to hwlock name strings defined in the same order - as the hwlocks, should be "adi". - #address-cells: Number of cells required to define a chip select address on the ADI-SPI bus. Should be set to 1. - #size-cells: Size of cells required to define a chip select address size on the ADI-SPI bus. Should be set to 0. Optional properties: +- hwlocks: Reference to a phandle of a hwlock provider node. +- hwlock-names: Reference to hwlock name strings defined in the same order + as the hwlocks, should be "adi". - sprd,hw-channels: This is an array of channel values up to 49 channels. The first value specifies the hardware channel id which is used to transfer data triggered by hardware automatically, and the second