From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B18AAC433ED for ; Wed, 14 Apr 2021 14:27:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9422F61139 for ; Wed, 14 Apr 2021 14:27:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349566AbhDNO1e (ORCPT ); Wed, 14 Apr 2021 10:27:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349527AbhDNO12 (ORCPT ); Wed, 14 Apr 2021 10:27:28 -0400 Received: from mail-qt1-x849.google.com (mail-qt1-x849.google.com [IPv6:2607:f8b0:4864:20::849]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F0D5C06138D for ; Wed, 14 Apr 2021 07:27:05 -0700 (PDT) Received: by mail-qt1-x849.google.com with SMTP id e6-20020ac85dc60000b029019d9cbbc077so2011120qtx.11 for ; Wed, 14 Apr 2021 07:27:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=aTQH+8QFadrYoaEx7teEfO6F+xF81qJm/gbu7SJfp4M=; b=p+Dy4+wR6puYM9D4rzYQ0dFlGkQtuZiNm05XebXvDRpCrpegQGd4o/KJUwQLnWcb+C BV+LYnY3Brvs4c6UXyblt4WVNqxO4TnsC4IpYTF7PpzIggBhhOwe7tmrYcufexaCx+YE N9q1DjDTTz4DcN1KjkqXsFpCOYmLmQ7SWSQ/dK0gkFiqTyPXUUoTdzVgQCQglg7oJ53T FOTIlNNL7kIlRJWd9uc6aWVy08NIjrTCIdTIuoDvkBqjpQX0iJzTe4mL1IA9gLGWO59Q rgkG4E/DctjmZDiNfn5U+wwVZWp5+SMTQ8uI+WWzVNJvyzXf61gEUNgXk119i9QWHce9 J+4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=aTQH+8QFadrYoaEx7teEfO6F+xF81qJm/gbu7SJfp4M=; b=n2BXB+NE8ymgCdhWHAodJpvSq7Mer37evpviNkX8wh43S/TJnNR8WuHLj2YCNmR+cq Y8PulIq7ulak6nrDfXQCcGQf8tIWBkRguQ4weipjcfkaHX3WiEixmtX/C0awT0fcQl0A SxSiSV7mLM8fduLN5wQeLBkaS/pZtYiE0vES8E5G9qbYObspNFgtDTObbvv6OnEGgoYM fuxdcXIs0oRiqjYTqaGTG1XI5cc1alfASX5ftx0njbxTZui6YaGOGBNxQuQoxI3j+p7Z umyUyYCv0m5bcBy9/nMy/084C+1vV5J41+xhaAHTDNW4L5cn7U0kOKa6wuxIToxim32M bSvw== X-Gm-Message-State: AOAM533VRCoxF+JV1ljgA662Bfh50ssaMRh1pJppFrAK4+xWQTl9wckY GLlC/iAtS1mQdkXFmbTbj9uv8RZw1gI= X-Google-Smtp-Source: ABdhPJy6NCAvWnn2HR6o730wtjP3t0Cu4NnswFnFKu09GrC3WOAoD7SpzOiFFKNOgxoH+d7GVf3p6tR16eY= X-Received: from badhri.mtv.corp.google.com ([2620:15c:211:201:91dd:58ac:7590:aa21]) (user=badhri job=sendgmr) by 2002:a0c:ff02:: with SMTP id w2mr38604856qvt.23.1618410424116; Wed, 14 Apr 2021 07:27:04 -0700 (PDT) Date: Wed, 14 Apr 2021 07:26:56 -0700 In-Reply-To: <20210414142656.63749-1-badhri@google.com> Message-Id: <20210414142656.63749-3-badhri@google.com> Mime-Version: 1.0 References: <20210414142656.63749-1-badhri@google.com> X-Mailer: git-send-email 2.31.1.295.g9ea45b61b8-goog Subject: [PATCH v4 3/3] dt-bindings: connector: Add slow-charger-loop definition From: Badhri Jagan Sridharan To: Guenter Roeck , Heikki Krogerus , Greg Kroah-Hartman , Rob Herring , Adam Thomson Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Kyle Tso , Badhri Jagan Sridharan Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allows PMIC charger loops which are slow(i.e. cannot meet the 15ms deadline) to still comply to pSnkStby i.e Maximum power that can be consumed by sink while in Sink Standby state as defined in 7.4.2 Sink Electrical Parameters of USB Power Delivery Specification Revision 3.0, Version 1.2. This patch introduces slow-charger-loop which when set makes the port request PD_P_SNK_STDBY_MW(2.5W i.e 500mA@5V) upon entering SNK_DISCOVERY (instead of 3A or the 1.5A during SNK_DISCOVERY) and the actual currrent limit after RX of PD_CTRL_PSRDY for PD link or during SNK_READY for non-pd link. Signed-off-by: Badhri Jagan Sridharan --- Changes since v3: * Removed additional semi-colon in the subject line Changes since V2: To address Rob's comments * Updated commit and the binding description. * Updated subject as well. --- .../devicetree/bindings/connector/usb-connector.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml index b6daedd62516..32509b98142e 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml @@ -197,6 +197,16 @@ properties: $ref: /schemas/types.yaml#/definitions/uint32 enum: [1, 2, 3] + slow-charger-loop: + description: Allows PMIC charger loops which are slow(i.e. cannot meet the 15ms deadline) to + still comply to pSnkStby i.e Maximum power that can be consumed by sink while in Sink Standby + state as defined in 7.4.2 Sink Electrical Parameters of USB Power Delivery Specification + Revision 3.0, Version 1.2. When the property is set, the port requests pSnkStby(2.5W - + 5V@500mA) upon entering SNK_DISCOVERY(instead of 3A or the 1.5A, Rp current advertised, during + SNK_DISCOVERY) and the actual currrent limit after reception of PS_Ready for PD link or during + SNK_READY for non-pd link. + type: boolean + required: - compatible -- 2.31.1.295.g9ea45b61b8-goog