From patchwork Sun Jun 4 12:12:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 13266556 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA311C7EE39 for ; Sun, 4 Jun 2023 12:13:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231760AbjFDMN0 (ORCPT ); Sun, 4 Jun 2023 08:13:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43594 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231725AbjFDMNZ (ORCPT ); Sun, 4 Jun 2023 08:13:25 -0400 Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.17.10]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2C35DB; Sun, 4 Jun 2023 05:13:21 -0700 (PDT) Received: from stefanw-SCHENKER ([37.4.248.58]) by mrelayeu.kundenserver.de (mreue107 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MYN7M-1pbPdB1oB8-00VQsj; Sun, 04 Jun 2023 14:12:43 +0200 From: Stefan Wahren To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Ray Jui , Scott Branden , Jassi Brar , Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , "Rafael J. Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Thomas Gleixner Cc: linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-mmc@vger.kernel.org, linux-pwm@vger.kernel.org, linux-pm@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, Stefan Wahren Subject: [PATCH 03/10] dt-bindings: dma: convert bcm2835-dma bindings to YAML Date: Sun, 4 Jun 2023 14:12:16 +0200 Message-Id: <20230604121223.9625-4-stefan.wahren@i2se.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230604121223.9625-1-stefan.wahren@i2se.com> References: <20230604121223.9625-1-stefan.wahren@i2se.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:/DYqJCPanm08IVBLMJyh/pdGyuuxwXbEVgfjLIDmscRCU1NhtUj 79EOpxxt2arSufaI7U1uLOZhYntT8/XQIlpmwCfsmEL0MIaIKEm092hU9HApjE2az/mZFhW k0ZA/VoFtqmYWBUxH2TLGMNLhRIsNXjUbEp7b1MpZz/JbEe0RO3NTRwzBomkUeCInkX8Cai eHU4H81IHh4Z2JaPc/2EA== UI-OutboundReport: notjunk:1;M01:P0:duIpyYLtPW0=;KVa6IYHyFloX7F52MS9l4x3nYB8 611sPSdVsdgt2yXnD6RkfDUAA0cH+jsGzzMjrRprE73Dxeoe1ipJa5Dn5+QkldgnYCAoY1QhC VquTfCmkKVLeyWpqiF0w4KrN7SZCdcKXOUzUUeKAerNah05Y/3NjGMKfdoa5oxMEYc/X80l7l zd1HhZQshNgowr67XcxCYWEZVDPP6H4iJKRFV3vxbvEV+e2WyStfGfESp1zt96zg5tVOGCk8C xI+utlu+mLeyeOpfLC9YdDZXAvsRx48M7vlImhAmu1ZB7TAh9JOSHklpoLEl14iHqzFAMyBFv zIhJdGakWhZreDZ5EH1ADPTI8n5+kD8zwPwWFOUPVAfA+U2UnKyNz5ps8pxbe4xvGkHvu+09o JwIOTWQ1sFfAEClzkqRpWFBSewfHGbHfxAnPQ/ySsO8T1P8P2kxfCRCkKLskuLLqFsCnH8LPW QkSgP07ukpf4giaJCGWWZbPKIxkwECuxtVU0M3oHo/ia81UAt+XIodkN1yKRADksqfsbVG3oz iWjtXsLNL9OV0UpKFjMdlNk7QrfBgymUmAeQrQzv192zr49YwC69CwYcP5Dl9uAN7Liy8sgq5 iNKR8icQsA1ieQDWF8Hh0t7Xuw5ABRlzBLlQlqP7vk7WYbD9h7pF3b/UVe4skTmdXFIkbo7LG 8qXwgiOPkyjOUVVARm04bvlJ0kFfZGXg6djOydXRIA== Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Convert the DT binding document for bcm2835-dma from .txt to YAML. Since brcm,dma-channel-mask is considered deprecated use the generic property. Signed-off-by: Stefan Wahren Reviewed-by: Rob Herring --- .../bindings/dma/brcm,bcm2835-dma.txt | 83 ---------------- .../bindings/dma/brcm,bcm2835-dma.yaml | 98 +++++++++++++++++++ 2 files changed, 98 insertions(+), 83 deletions(-) delete mode 100644 Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt create mode 100644 Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.yaml diff --git a/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt b/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt deleted file mode 100644 index b6a8cc0978cd..000000000000 --- a/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.txt +++ /dev/null @@ -1,83 +0,0 @@ -* BCM2835 DMA controller - -The BCM2835 DMA controller has 16 channels in total. -Only the lower 13 channels have an associated IRQ. -Some arbitrary channels are used by the firmware -(1,3,6,7 in the current firmware version). -The channels 0,2 and 3 have special functionality -and should not be used by the driver. - -Required properties: -- compatible: Should be "brcm,bcm2835-dma". -- reg: Should contain DMA registers location and length. -- interrupts: Should contain the DMA interrupts associated - to the DMA channels in ascending order. -- interrupt-names: Should contain the names of the interrupt - in the form "dmaXX". - Use "dma-shared-all" for the common interrupt line - that is shared by all dma channels. -- #dma-cells: Must be <1>, the cell in the dmas property of the - client device represents the DREQ number. -- brcm,dma-channel-mask: Bit mask representing the channels - not used by the firmware in ascending order, - i.e. first channel corresponds to LSB. - -Example: - -dma: dma@7e007000 { - compatible = "brcm,bcm2835-dma"; - reg = <0x7e007000 0xf00>; - interrupts = <1 16>, - <1 17>, - <1 18>, - <1 19>, - <1 20>, - <1 21>, - <1 22>, - <1 23>, - <1 24>, - <1 25>, - <1 26>, - /* dma channel 11-14 share one irq */ - <1 27>, - <1 27>, - <1 27>, - <1 27>, - /* unused shared irq for all channels */ - <1 28>; - interrupt-names = "dma0", - "dma1", - "dma2", - "dma3", - "dma4", - "dma5", - "dma6", - "dma7", - "dma8", - "dma9", - "dma10", - "dma11", - "dma12", - "dma13", - "dma14", - "dma-shared-all"; - - #dma-cells = <1>; - brcm,dma-channel-mask = <0x7f35>; -}; - - -DMA clients connected to the BCM2835 DMA controller must use the format -described in the dma.txt file, using a two-cell specifier for each channel. - -Example: - -bcm2835_i2s: i2s@7e203000 { - compatible = "brcm,bcm2835-i2s"; - reg = < 0x7e203000 0x24>; - clocks = <&clocks BCM2835_CLOCK_PCM>; - - dmas = <&dma 2>, - <&dma 3>; - dma-names = "tx", "rx"; -}; diff --git a/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.yaml b/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.yaml new file mode 100644 index 000000000000..a09000a8131f --- /dev/null +++ b/Documentation/devicetree/bindings/dma/brcm,bcm2835-dma.yaml @@ -0,0 +1,98 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/brcm,bcm2835-dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: BCM2835 DMA controller + +maintainers: + - Nicolas Saenz Julienne + +description: + The BCM2835 DMA controller has 16 channels in total. Only the lower + 13 channels have an associated IRQ. Some arbitrary channels are used by the + VideoCore firmware (1,3,6,7 in the current firmware version). The channels + 0, 2 and 3 have special functionality and should not be used by the driver. + +allOf: + - $ref: "dma-controller.yaml#" + +properties: + compatible: + const: brcm,bcm2835-dma + + reg: + maxItems: 1 + + interrupts: + description: + Should contain the DMA interrupts associated to the DMA channels in + ascending order. + minItems: 1 + maxItems: 16 + + interrupt-names: + minItems: 1 + maxItems: 16 + + '#dma-cells': + description: The single cell represents the DREQ number. + const: 1 + + dma-channel-mask: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - "#dma-cells" + - dma-channel-mask + +unevaluatedProperties: false + +examples: + - | + dma-controller@7e007000 { + compatible = "brcm,bcm2835-dma"; + reg = <0x7e007000 0xf00>; + interrupts = <1 16>, + <1 17>, + <1 18>, + <1 19>, + <1 20>, + <1 21>, + <1 22>, + <1 23>, + <1 24>, + <1 25>, + <1 26>, + /* dma channel 11-14 share one irq */ + <1 27>, + <1 27>, + <1 27>, + <1 27>, + /* unused shared irq for all channels */ + <1 28>; + interrupt-names = "dma0", + "dma1", + "dma2", + "dma3", + "dma4", + "dma5", + "dma6", + "dma7", + "dma8", + "dma9", + "dma10", + "dma11", + "dma12", + "dma13", + "dma14", + "dma-shared-all"; + #dma-cells = <1>; + dma-channel-mask = <0x7f35>; + }; + +...