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Tue, 30 Nov 2021 02:23:41 -0800 Message-ID: <34c82598-68c9-26e2-6ba6-683b81ec5ccd@xilinx.com> Date: Tue, 30 Nov 2021 11:23:37 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.2 Subject: Re: [PATCH V2 1/2] dt-bindings: usb: misc: Add binding for Microchip usb2244 Controller Content-Language: en-US To: Rob Herring , Piyush Mehta CC: , , , , , , , , , , References: <20211122062834.1812005-1-piyush.mehta@xilinx.com> <20211122062834.1812005-2-piyush.mehta@xilinx.com> From: Michal Simek In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3a644f4b-4a54-4565-85db-08d9b3eb7c14 X-MS-TrafficTypeDiagnostic: DM5PR02MB3734: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:5797; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Nov 2021 10:23:42.9242 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3a644f4b-4a54-4565-85db-08d9b3eb7c14 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: SN1NAM02FT0021.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR02MB3734 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/30/21 03:11, Rob Herring wrote: > On Mon, Nov 22, 2021 at 11:58:33AM +0530, Piyush Mehta wrote: >> Microchip's USB224x family of Hi-Speed USB 2.0 flash media card controllers >> provides an ultra-fast interface between a USB host controller and flash >> media cards. >> >> Add dt-bindings documentation for Microchip's usb2244 Controller. >> USB224x is a USB 2.0 compliant ultra fast USB 2.0 multi-format, >> SD/MMC, and MS Flash Media Controllers. >> >> Signed-off-by: Piyush Mehta >> --- >> Changes for V2: >> - Update reset polarity, make reset ACTIVE LOW in the dt-binding document. >> - Added usbsd node under the usb controller (usb0) node. >> - Remove Warning: decoded text below may be mangled, UTF-8 assumed. >> >> Review comments: >> Link: https://lore.kernel.org/lkml/CAL_JsqKu6vr3iCz1G7MtK6gyqAvn4s4mpuLOwPzJDEmyZeROig@mail.gmail.com/ >> --- >> .../devicetree/bindings/usb/microchip,usb2244.yaml | 47 ++++++++++++++++++++++ >> 1 file changed, 47 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/usb/microchip,usb2244.yaml >> >> diff --git a/Documentation/devicetree/bindings/usb/microchip,usb2244.yaml b/Documentation/devicetree/bindings/usb/microchip,usb2244.yaml >> new file mode 100644 >> index 0000000..1854313 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/usb/microchip,usb2244.yaml >> @@ -0,0 +1,47 @@ >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >> +%YAML 1.2 >> +--- >> +$id: "http://devicetree.org/schemas/usb/microchip,usb2244.yaml#" >> +$schema: "http://devicetree.org/meta-schemas/core.yaml#" >> + >> +title: Bindings for the Microchip USB2244 Ultra Fast USB-SD Controller >> + >> +description: >> + Microchip USB224x is a USB 2.0 compliant, Hi-Speed bulk only mass >> + storage class peripheral controller intended for reading and writing >> + to popular flash media from the xDPicture Card, Memory Stick (MS), >> + Secure Digital (SD), and MultiMediaCard (MMC) families. >> + >> + USB224x is a flash media card reader solution fully compliant with the >> + USB 2.0 specification. >> + >> +maintainers: >> + - Piyush Mehta >> + >> +properties: >> + compatible: >> + const: microchip,usb2244 >> + >> + reset-gpios: >> + maxItems: 1 >> + description: >> + The phandle and specifier for the GPIO that controls the RESET line of >> + flash media controller. >> + >> +required: >> + - compatible >> + - reset-gpios >> + >> +additionalProperties: false >> + >> +examples: >> + - | >> + #include >> + usb0 { >> + usbsd { >> + compatible = "microchip,usb2244"; >> + reset-gpios = <&gpio 2 GPIO_ACTIVE_LOW>; >> + }; > > This is not how the USB device binding works. See usb-device.yaml. > Is this fine? device@1 { compatible = "usb424,2240"; reg = <1>; reset-gpios = <&gpio 2 GPIO_ACTIVE_LOW>; }; If yes, this means that we should use usb driver instead of platform driver. Thanks, Michal