From patchwork Mon May 6 12:34:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 163402 Delivered-To: patch@linaro.org Received: by 2002:a92:3d95:0:0:0:0:0 with SMTP id k21csp1794247ilf; Mon, 6 May 2019 05:35:15 -0700 (PDT) X-Google-Smtp-Source: APXvYqxWbKHwzkkQX0NMUD2e8/Qkw4wEBrdBOz3Bl7CsG8lfb1S8Tjn9eEqHaH9lOKs1JB5teINS X-Received: by 2002:a62:4558:: with SMTP id s85mr33475300pfa.171.1557146115417; Mon, 06 May 2019 05:35:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1557146115; cv=none; d=google.com; s=arc-20160816; b=Zmex0zOphfsl22YqDfjJAnRO+fpvMFPFXC7ElnCaRwygeM65woZNJSSxMTxRQBf80I L6ebUm8m9mD/HHzLdvHEau+Ks03XW+FMFICOofMjeh0mUWbQAJ+MAsmfcA9i2+rq2evM lvVW6c2Dpc/xcLw1IWlB2TeJ3FprYmIx927qamWRdisLAF41VCLvu1cnjNrfTmuOxVxt NPml6zXPxFGElx+TazEN7/yYYElmxqHDShptOJF19UEVxwqNk4h2xFW/5fIYNdSMfj1f IWm1incvzWLPlWBhtfH9b7QAkrq53+Zpzc5Ilwcb3WpquH3spIBgg5C3nf8jTMpNKhPs T7fQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=GpP5OJnC1vUI88M5KQpucPLxJvzjC5ZH8+aBBrYhIWc=; b=C7eSGW4swMf2+5gaXw4Hb0fPB1OdpniPwZh9PWTZ6v4OouRChsGyQZz6k0uIRfLujW n4OpugLtp0oWS67GEpzRBNEV9xxd4dDPfpMPJNVZTAnFy99ZldiiNtdq9kuke73uhm7x iPm4vlYmUd65X6019XgC3YlLO0ROqxC/BVZV/RxQslmPOJcBfBaNO9iScj/X6NoheqHH 9v1Jhctbb5DNW01DZvtdIbRSphW+Rj8pSeK0tF+XBUMwHbhMmDG5WbAfCtAvAYIJAi7z ThDkBbcTV7kk2kMTEiEUcfBwESApf5GJq65nhLM5EwWbskNEEaCICCJRlhFxk1UgKr7q YXhA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=ee0gR8vr; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id a36si14607081pgb.165.2019.05.06.05.35.14; Mon, 06 May 2019 05:35:15 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=ee0gR8vr; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726347AbfEFMfO (ORCPT + 30 others); Mon, 6 May 2019 08:35:14 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:54068 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725852AbfEFMfL (ORCPT ); Mon, 6 May 2019 08:35:11 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x46CZ2sO058381; Mon, 6 May 2019 07:35:02 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1557146102; bh=GpP5OJnC1vUI88M5KQpucPLxJvzjC5ZH8+aBBrYhIWc=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=ee0gR8vr22TFOPpT9budlF53oCdsQpl/aLACMXYam4dWAy5TOQRRkys8E15cTF9HC 5mKa9TbAkv1PlSDyiRi+ArCUCQsrK1fhlGp/uivz0KFCS8yHRhEEAKyefxdM5hcjJy wh5C8wkFj5s2jWB8qLuRTI0XmT+v6zKTwZezDoRY= Received: from DLEE112.ent.ti.com (dlee112.ent.ti.com [157.170.170.23]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x46CZ1jK034333 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 6 May 2019 07:35:02 -0500 Received: from DLEE113.ent.ti.com (157.170.170.24) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Mon, 6 May 2019 07:35:00 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Mon, 6 May 2019 07:35:00 -0500 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x46CYpU8110286; Mon, 6 May 2019 07:34:58 -0500 From: Peter Ujfalusi To: , , , CC: , , , , , , , , Subject: [PATCH 02/16] bindings: soc: ti: add documentation for k3 ringacc Date: Mon, 6 May 2019 15:34:42 +0300 Message-ID: <20190506123456.6777-3-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190506123456.6777-1-peter.ujfalusi@ti.com> References: <20190506123456.6777-1-peter.ujfalusi@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Grygorii Strashko The Ring Accelerator (RINGACC or RA) provides hardware acceleration to enable straightforward passing of work between a producer and a consumer. There is one RINGACC module per NAVSS on TI AM65x SoCs. This patch introduces RINGACC device tree bindings. Signed-off-by: Grygorii Strashko --- .../devicetree/bindings/soc/ti/k3-ringacc.txt | 59 +++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/ti/k3-ringacc.txt -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki Reviewed-by: Rob Herring diff --git a/Documentation/devicetree/bindings/soc/ti/k3-ringacc.txt b/Documentation/devicetree/bindings/soc/ti/k3-ringacc.txt new file mode 100644 index 000000000000..86954cf4fa99 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/ti/k3-ringacc.txt @@ -0,0 +1,59 @@ +* Texas Instruments K3 NavigatorSS Ring Accelerator + +The Ring Accelerator (RA) is a machine which converts read/write accesses +from/to a constant address into corresponding read/write accesses from/to a +circular data structure in memory. The RA eliminates the need for each DMA +controller which needs to access ring elements from having to know the current +state of the ring (base address, current offset). The DMA controller +performs a read or write access to a specific address range (which maps to the +source interface on the RA) and the RA replaces the address for the transaction +with a new address which corresponds to the head or tail element of the ring +(head for reads, tail for writes). + +The Ring Accelerator is a hardware module that is responsible for accelerating +management of the packet queues. The K3 SoCs can have more than one RA instances + +Required properties: +- compatible : Must be "ti,am654-navss-ringacc"; +- reg : Should contain register location and length of the following + named register regions. +- reg-names : should be + "rt" - The RA Ring Real-time Control/Status Registers + "fifos" - The RA Queues Registers + "proxy_gcfg" - The RA Proxy Global Config Registers + "proxy_target" - The RA Proxy Datapath Registers +- ti,num-rings : Number of rings supported by RA +- ti,sci-rm-range-gp-rings : TI-SCI RM subtype for GP ring range +- ti,sci : phandle on TI-SCI compatible System controller node +- ti,sci-dev-id : TI-SCI device id +- msi-parent : phandle for "ti,sci-inta" interrupt controller + +Optional properties: + -- ti,dma-ring-reset-quirk : enable ringacc / udma ring state interoperability + issue software w/a + +Example: + +ringacc: ringacc@3c000000 { + compatible = "ti,am654-navss-ringacc"; + reg = <0x0 0x3c000000 0x0 0x400000>, + <0x0 0x38000000 0x0 0x400000>, + <0x0 0x31120000 0x0 0x100>, + <0x0 0x33000000 0x0 0x40000>; + reg-names = "rt", "fifos", + "proxy_gcfg", "proxy_target"; + ti,num-rings = <818>; + ti,sci-rm-range-gp-rings = <0x2>; /* GP ring range */ + ti,dma-ring-reset-quirk; + ti,sci = <&dmsc>; + ti,sci-dev-id = <187>; + msi-parent = <&inta_main_udmass>; +}; + +client: + +dma_ipx: dma_ipx@ { + ... + ti,ringacc = <&ringacc>; + ... +}