From patchwork Mon Mar 13 16:50:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 662973 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 24944C7618B for ; Mon, 13 Mar 2023 16:56:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231157AbjCMQ4t (ORCPT ); Mon, 13 Mar 2023 12:56:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230053AbjCMQ4r (ORCPT ); Mon, 13 Mar 2023 12:56:47 -0400 Received: from mail11.truemail.it (mail11.truemail.it [217.194.8.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E60FD56159; Mon, 13 Mar 2023 09:56:28 -0700 (PDT) Received: from francesco-nb.pivistrello.it (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id B874921E29; Mon, 13 Mar 2023 17:50:44 +0100 (CET) From: Francesco Dolcini To: linux-usb@vger.kernel.org, devicetree@vger.kernel.org Cc: Emanuele Ghidoli , linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Dongjin Kim , Francesco Dolcini Subject: [PATCH v1 1/3] dt-bindings: usb: smsc,usb3503: Add usb3803 Date: Mon, 13 Mar 2023 17:50:37 +0100 Message-Id: <20230313165039.255579-2-francesco@dolcini.it> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230313165039.255579-1-francesco@dolcini.it> References: <20230313165039.255579-1-francesco@dolcini.it> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Emanuele Ghidoli Add support for usb3803, compared to usb3503 it uses a regular USB connection to upstream instead of HSIC, it has an additional low power mode (bypass) and an additional control signal (BYPASS_N). In bypass mode the downstream port 3 is connected to the upstream port with low switch resistance R_on. Signed-off-by: Emanuele Ghidoli Signed-off-by: Francesco Dolcini Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/usb/smsc,usb3503.yaml | 54 ++++++++++++++++++- 1 file changed, 52 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/smsc,usb3503.yaml b/Documentation/devicetree/bindings/usb/smsc,usb3503.yaml index a09f4528aea3..6156dc26e65c 100644 --- a/Documentation/devicetree/bindings/usb/smsc,usb3503.yaml +++ b/Documentation/devicetree/bindings/usb/smsc,usb3503.yaml @@ -14,6 +14,7 @@ properties: enum: - smsc,usb3503 - smsc,usb3503a + - smsc,usb3803 reg: maxItems: 1 @@ -33,6 +34,12 @@ properties: description: > GPIO for reset + bypass-gpios: + maxItems: 1 + description: > + GPIO for bypass. + Control signal to select between HUB MODE and BYPASS MODE. + disabled-ports: $ref: /schemas/types.yaml#/definitions/uint32-array minItems: 1 @@ -46,9 +53,10 @@ properties: initial-mode: $ref: /schemas/types.yaml#/definitions/uint32 - enum: [1, 2] description: > - Specifies initial mode. 1 for Hub mode, 2 for standby mode. + Specifies initial mode. 1 for Hub mode, 2 for standby mode and 3 for bypass mode. + In bypass mode the downstream port 3 is connected to the upstream port with low + switch resistance R_on. clocks: maxItems: 1 @@ -71,6 +79,29 @@ properties: required: - compatible +allOf: + - if: + not: + properties: + compatible: + enum: + - smsc,usb3803 + then: + properties: + bypass-gpios: false + + - if: + required: + - bypass-gpios + then: + properties: + initial-mode: + enum: [1, 2, 3] + else: + properties: + initial-mode: + enum: [1, 2] + additionalProperties: false examples: @@ -92,6 +123,25 @@ examples: }; }; + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + usb-hub@8 { + compatible = "smsc,usb3803"; + reg = <0x08>; + connect-gpios = <&gpx3 0 1>; + disabled-ports = <2 3>; + intn-gpios = <&gpx3 4 1>; + reset-gpios = <&gpx3 5 1>; + bypass-gpios = <&gpx3 6 1>; + initial-mode = <3>; + clocks = <&clks 80>; + clock-names = "refclk"; + }; + }; + - | #include