From patchwork Mon Apr 13 15:26:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 11485751 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0159F13B2 for ; Mon, 13 Apr 2020 15:27:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D956E2072C for ; Mon, 13 Apr 2020 15:27:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=crapouillou.net header.i=@crapouillou.net header.b="Bk3MJhsu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730980AbgDMP1d (ORCPT ); Mon, 13 Apr 2020 11:27:33 -0400 Received: from outils.crapouillou.net ([89.234.176.41]:39858 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730200AbgDMP1c (ORCPT ); Mon, 13 Apr 2020 11:27:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1586791632; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i32sxK0/BQm5mO4QK4rQ7kGxMXUg7+J9OmBQIcOz+lE=; b=Bk3MJhsu4IBjfMi0xT9qLDMqPrfc9DX6euqXLtFJPQK1Bl8aa1d/RWk9teNLrFthNyUcAL CwPY2J4eVIquY9tjBsuOJY6O1mE51mTjEK0R7zxf9zjOtzz6lVaqk4xSKi5n/ugqQ/hlTA kMTFGTxnc77HcjgtlpX3YCQ4Nh06/Ak= From: Paul Cercueil To: Thomas Bogendoerfer , Rob Herring Cc: od@zcrc.me, =?utf-8?b?5ZGo55Cw5p2w?= , devicetree@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Cercueil Subject: [PATCH 03/13] dt-bindings: dma: Convert jz4740-dma doc to YAML Date: Mon, 13 Apr 2020 17:26:23 +0200 Message-Id: <20200413152633.198301-3-paul@crapouillou.net> In-Reply-To: <20200413152633.198301-1-paul@crapouillou.net> References: <20200413152633.198301-1-paul@crapouillou.net> MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Convert the textual documentation for the Ingenic SoCs DMA Controller devicetree binding to YAML. Signed-off-by: Paul Cercueil --- .../devicetree/bindings/dma/ingenic,dma.yaml | 80 +++++++++++++++++++ .../devicetree/bindings/dma/jz4780-dma.txt | 64 --------------- 2 files changed, 80 insertions(+), 64 deletions(-) create mode 100644 Documentation/devicetree/bindings/dma/ingenic,dma.yaml delete mode 100644 Documentation/devicetree/bindings/dma/jz4780-dma.txt diff --git a/Documentation/devicetree/bindings/dma/ingenic,dma.yaml b/Documentation/devicetree/bindings/dma/ingenic,dma.yaml new file mode 100644 index 000000000000..92794c500589 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/ingenic,dma.yaml @@ -0,0 +1,80 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/ingenic,dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ingenic SoCs DMA Controller DT bindings + +maintainers: + - Paul Cercueil + +allOf: + - $ref: "dma-controller.yaml#" + +properties: + compatible: + enum: + - ingenic,jz4740-dma + - ingenic,jz4725b-dma + - ingenic,jz4770-dma + - ingenic,jz4780-dma + - ingenic,x1000-dma + - ingenic,x1830-dma + + reg: + items: + - description: Channel-specific registers + - description: System control registers + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + "#dma-cells": + const: 2 + description: > + DMA clients must use the format described in dma.txt, giving a phandle + to the DMA controller plus the following 2 integer cells: + + - Request type: The DMA request type for transfers to/from the + device on the allocated channel, as defined in the SoC documentation. + + - Channel: If set to 0xffffffff, any available channel will be allocated + for the client. Otherwise, the exact channel specified will be used. + The channel should be reserved on the DMA controller using the + ingenic,reserved-channels property. + + ingenic,reserved-channels: + $ref: /schemas/types.yaml#definitions/uint32 + description: > + Bitmask of channels to reserve for devices that need a specific + channel. These channels will only be assigned when explicitely + requested by a client. The primary use for this is channels 0 and + 1, which can be configured to have special behaviour for NAND/BCH + when using programmable firmware. + +required: + - compatible + - reg + - interrupts + - clocks + +examples: + - | + #include + dma: dma-controller@13420000 { + compatible = "ingenic,jz4780-dma"; + reg = <0x13420000 0x400>, <0x13421000 0x40>; + + interrupt-parent = <&intc>; + interrupts = <10>; + + clocks = <&cgu JZ4780_CLK_PDMA>; + + #dma-cells = <2>; + + ingenic,reserved-channels = <0x3>; + }; diff --git a/Documentation/devicetree/bindings/dma/jz4780-dma.txt b/Documentation/devicetree/bindings/dma/jz4780-dma.txt deleted file mode 100644 index 3459e77be294..000000000000 --- a/Documentation/devicetree/bindings/dma/jz4780-dma.txt +++ /dev/null @@ -1,64 +0,0 @@ -* Ingenic XBurst DMA Controller - -Required properties: - -- compatible: Should be one of: - * ingenic,jz4740-dma - * ingenic,jz4725b-dma - * ingenic,jz4770-dma - * ingenic,jz4780-dma - * ingenic,x1000-dma - * ingenic,x1830-dma -- reg: Should contain the DMA channel registers location and length, followed - by the DMA controller registers location and length. -- interrupts: Should contain the interrupt specifier of the DMA controller. -- clocks: Should contain a clock specifier for the JZ4780/X1000/X1830 PDMA - clock. -- #dma-cells: Must be <2>. Number of integer cells in the dmas property of - DMA clients (see below). - -Optional properties: - -- ingenic,reserved-channels: Bitmask of channels to reserve for devices that - need a specific channel. These channels will only be assigned when explicitly - requested by a client. The primary use for this is channels 0 and 1, which - can be configured to have special behaviour for NAND/BCH when using - programmable firmware. - -Example: - -dma: dma-controller@13420000 { - compatible = "ingenic,jz4780-dma"; - reg = <0x13420000 0x400 - 0x13421000 0x40>; - - interrupt-parent = <&intc>; - interrupts = <10>; - - clocks = <&cgu JZ4780_CLK_PDMA>; - - #dma-cells = <2>; - - ingenic,reserved-channels = <0x3>; -}; - -DMA clients must use the format described in dma.txt, giving a phandle to the -DMA controller plus the following 2 integer cells: - -1. Request type: The DMA request type for transfers to/from the device on - the allocated channel, as defined in the SoC documentation. - -2. Channel: If set to 0xffffffff, any available channel will be allocated for - the client. Otherwise, the exact channel specified will be used. The channel - should be reserved on the DMA controller using the ingenic,reserved-channels - property. - -Example: - -uart0: serial@10030000 { - ... - dmas = <&dma 0x14 0xffffffff - &dma 0x15 0xffffffff>; - dma-names = "tx", "rx"; - ... -};