From patchwork Thu Feb 12 05:46:04 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Gross X-Patchwork-Id: 5816361 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 CBDE5BF440 for ; Thu, 12 Feb 2015 05:49:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DE553201F2 for ; Thu, 12 Feb 2015 05:49:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 131A0201DD for ; Thu, 12 Feb 2015 05:49:57 +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 1YLmcD-0007I7-W4; Thu, 12 Feb 2015 05:47:05 +0000 Received: from smtp.codeaurora.org ([198.145.29.96]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YLmbz-0007Cs-SI for linux-arm-kernel@lists.infradead.org; Thu, 12 Feb 2015 05:46:52 +0000 Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id BCEA11405A2; Thu, 12 Feb 2015 05:46:31 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 486) id AE47E1405A8; Thu, 12 Feb 2015 05:46:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (rrcs-67-52-129-61.west.biz.rr.com [67.52.129.61]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: agross@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 24FFC1405A2; Thu, 12 Feb 2015 05:46:31 +0000 (UTC) From: Andy Gross To: Vinod Koul Subject: [Patch v4 1/2] dt/bindings: qcom_adm: Fix channel specifiers Date: Wed, 11 Feb 2015 23:46:04 -0600 Message-Id: <1423719965-8156-2-git-send-email-agross@codeaurora.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1423719965-8156-1-git-send-email-agross@codeaurora.org> References: <1423719965-8156-1-git-send-email-agross@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150211_214652_006259_3F94512D X-CRM114-Status: GOOD ( 13.39 ) X-Spam-Score: -0.0 (/) Cc: devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, Andy Gross , linux-kernel@vger.kernel.org, Bjorn Andersson , Kumar Gala , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch removes the crci information from the dma channel property. At least one client device requires using more than one CRCI value for a channel. This does not match the current binding and the crci information needs to be removed. Instead, the client device will provide this information via other means. Signed-off-by: Andy Gross --- Documentation/devicetree/bindings/dma/qcom_adm.txt | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/qcom_adm.txt b/Documentation/devicetree/bindings/dma/qcom_adm.txt index 9bcab91..38d45f8 100644 --- a/Documentation/devicetree/bindings/dma/qcom_adm.txt +++ b/Documentation/devicetree/bindings/dma/qcom_adm.txt @@ -4,8 +4,7 @@ Required properties: - compatible: must contain "qcom,adm" for IPQ/APQ8064 and MSM8960 - reg: Address range for DMA registers - interrupts: Should contain one interrupt shared by all channels -- #dma-cells: must be <2>. First cell denotes the channel number. Second cell - denotes CRCI (client rate control interface) flow control assignment. +- #dma-cells: must be <1>. First cell denotes the channel number. - clocks: Should contain the core clock and interface clock. - clock-names: Must contain "core" for the core clock and "iface" for the interface clock. @@ -22,7 +21,7 @@ Example: compatible = "qcom,adm"; reg = <0x18300000 0x100000>; interrupts = <0 170 0>; - #dma-cells = <2>; + #dma-cells = <1>; clocks = <&gcc ADM0_CLK>, <&gcc ADM0_PBUS_CLK>; clock-names = "core", "iface"; @@ -35,15 +34,12 @@ Example: qcom,ee = <0>; }; -DMA clients must use the format descripted in the dma.txt file, using a three +DMA clients must use the format descripted in the dma.txt file, using a two cell specifier for each channel. -Each dmas request consists of 3 cells: +Each dmas request consists of two cells: 1. phandle pointing to the DMA controller 2. channel number - 3. CRCI assignment, if applicable. If no CRCI flow control is required, use 0. - The CRCI is used for flow control. It identifies the peripheral device that - is the source/destination for the transferred data. Example: @@ -56,7 +52,7 @@ Example: cs-gpios = <&qcom_pinmux 20 0>; - dmas = <&adm_dma 6 9>, - <&adm_dma 5 10>; + dmas = <&adm_dma 6>, + <&adm_dma 5>; dma-names = "rx", "tx"; };