From patchwork Mon Mar 20 17:55:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lin, Meng-Bo" X-Patchwork-Id: 666010 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 78427C76195 for ; Mon, 20 Mar 2023 18:02:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230457AbjCTSCk (ORCPT ); Mon, 20 Mar 2023 14:02:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230478AbjCTSCJ (ORCPT ); Mon, 20 Mar 2023 14:02:09 -0400 Received: from mail-4318.protonmail.ch (mail-4318.protonmail.ch [185.70.43.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BBECC7690 for ; Mon, 20 Mar 2023 10:56:33 -0700 (PDT) Date: Mon, 20 Mar 2023 17:55:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1679334933; x=1679594133; bh=FAkqOD8kiqkTEaAEfEctBYZB4b4Y94ELoYgOe0EWWpk=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=ZMhAHgPg6OUDCGsoHzTQSoirpDB1jUXVGQCPGqI8sxUuA4OBl8bdZ/YxSxXofUTF4 dHBuRkWVrF1MbyOggw/Qx2i7/IZHBkxZ01EkOTinpD2jUp8Mf85eiRk9bHJnRt2loF ZoiOARjYnSd2A+Abk0wVkuwjEXtVTYAf4tf/AfP6hTcdcQMaZIsxWNwrgimNeGLO92 gdDDg0i/W/vZUcc61XgjatznxWorG2NNFH3L9msrdfaTlVPetnEIE5NeJfYY4G5m+Y uUMlqnaOjUz3n3FKsndqNq3G/f71uQ/zfxoxlS57W6kOiBBQ6mHZNksr08M4fUgDin JLVtV5Tl854/w== To: linux-kernel@vger.kernel.org From: "Lin, Meng-Bo" Cc: Pavel Machek , Lee Jones , Rob Herring , Krzysztof Kozlowski , Nikita Travkin , Stephan Gerhold , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht Subject: [PATCH v2 1/2] dt-bindings: leds: aw2013: Document vddio-supply Message-ID: <20230320175131.174657-1-linmengbo0689@protonmail.com> In-Reply-To: <20230320174949.174600-1-linmengbo0689@protonmail.com> References: <20230320174949.174600-1-linmengbo0689@protonmail.com> Feedback-ID: 40467236:user:proton MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Some LEDs controllers are used with external pull-up for the interrupt line and the I2C lines, so we might need to enable a regulator to bring the lines into usable state. Otherwise, this might cause spurious interrupts and reading from I2C will fail. Document support for "vddio-supply" that is enabled by the aw2013 driver so that the regulator gets enabled when needed. Signed-off-by: Lin, Meng-Bo --- Documentation/devicetree/bindings/leds/leds-aw2013.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/leds/leds-aw2013.yaml b/Documentation/devicetree/bindings/leds/leds-aw2013.yaml index 08f3e1cfc1b1..79b69cf1d1fe 100644 --- a/Documentation/devicetree/bindings/leds/leds-aw2013.yaml +++ b/Documentation/devicetree/bindings/leds/leds-aw2013.yaml @@ -23,6 +23,11 @@ properties: vcc-supply: description: Regulator providing power to the "VCC" pin. + vddio-supply: + description: | + Optional regulator that provides digital I/O voltage, + e.g. for pulling up the interrupt line or the I2C pins. + "#address-cells": const: 1