From patchwork Tue Mar 15 21:19:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Patchwork-Id: 12781851 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2AFC8C433F5 for ; Tue, 15 Mar 2022 21:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=gur6FeFrUljXM28gQwRjPiUUReDRQlSdgasuAS3Nz80=; b=LxEX6RJoLgNRD3 j7ZRqLcT47w2g1wSXRqX1b9Sg25q0/OwMf+63LIHEIHg54f6WfOo/H9H6LklB/Pcnxas5QGtZdcGT YQd42h+WBu32cfBhV5vKF47yoGNQSJVBmWBZD1ESEoiyiyCmGd91++kfXFVzgnL5QfGkTCPeifUko D2w21v8UEPYGQFxvnffi0A/zToa260KO4Qq/EfRtx9zSzZ27I9y/h077GD7mBPEAe/Zlu3OsdpElc E3uF1CiAEEZPNFEKntw9N+zh4M2ZIpzwJSgud6awwGZ6nAcpO1mRf6usKY76Gy/LFQNIe2YCyV3XI XTdhbLzvDU8X+6vaio8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUEbL-00Ae6L-9q; Tue, 15 Mar 2022 21:21:07 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nUEb8-00Adzk-SZ; Tue, 15 Mar 2022 21:20:56 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: nfraprado) with ESMTPSA id 880151F42BBE DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1647379249; bh=3ckuvqWLQ1qmzoI6HPHe+BcexrvaTRmXFylbDp1AC3I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fiIGSmRYBQRNzj3mgKPV/UTBh7RiXSNivNo34MoxKqEfCQDberhKZkx5V3hpbATJ3 hX2IB1KUOeNwc/jmKawertc+hsCDJhhTWmNvTwM6yHM2umYnoOUqjCcpevWSxUegjK sJydYSemDm5kuiyd7mqxabk6lpX943D6a/l2YoFUMpRJvn+46Oz6CE36MxuGzkWQjS S/ZbGXyvLMNBCwfcFcl0haRTEU1JgebWwVluVARlQu9Ps72xPRUTjy6SECtEK0FUfy vez6cjtUaOU/VEsiVD8JUv3hOOZRItzn+FXUjHBSlPzTTYypNBZ4lt4pWnNeUZBvOg IjUrPQllOg00w== From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= To: Linus Walleij , Rob Herring Cc: kernel@collabora.com, AngeloGioacchino Del Regno , =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= , Matthias Brugger , Sean Wang , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org Subject: [PATCH v1 2/4] dt-bindings: pinctrl: mt8192: Add mediatek, drive-strength-adv property Date: Tue, 15 Mar 2022 17:19:34 -0400 Message-Id: <20220315211936.442708-3-nfraprado@collabora.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220315211936.442708-1-nfraprado@collabora.com> References: <20220315211936.442708-1-nfraprado@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220315_142055_084952_2ABA8055 X-CRM114-Status: GOOD ( 11.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add the mediatek,drive-strength-adv property to the pinctrl-mt8192 dt-binding to allow further drive current adjustments for I2C nodes on MT8192. It is the same as in mt8183-pinctrl. Signed-off-by: Nícolas F. R. A. Prado Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Rob Herring --- .../bindings/pinctrl/pinctrl-mt8192.yaml | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8192.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8192.yaml index d63e23d9ed16..b52d8d0eb2d0 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8192.yaml +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8192.yaml @@ -78,6 +78,32 @@ patternProperties: dt-bindings/pinctrl/mt65xx.h. It can only support 2/4/6/8/10/12/14/16mA in mt8192. enum: [2, 4, 6, 8, 10, 12, 14, 16] + mediatek,drive-strength-adv: + description: | + Describe the specific driving setup property. + For I2C pins, the existing generic driving setup can only support + 2/4/6/8/10/12/14/16mA driving. But in specific driving setup, they + can support 0.125/0.25/0.5/1mA adjustment. If we enable specific + driving setup, the existing generic setup will be disabled. + The specific driving setup is controlled by E1E0EN. + When E1=0/E0=0, the strength is 0.125mA. + When E1=0/E0=1, the strength is 0.25mA. + When E1=1/E0=0, the strength is 0.5mA. + When E1=1/E0=1, the strength is 1mA. + EN is used to enable or disable the specific driving setup. + Valid arguments are described as below: + 0: (E1, E0, EN) = (0, 0, 0) + 1: (E1, E0, EN) = (0, 0, 1) + 2: (E1, E0, EN) = (0, 1, 0) + 3: (E1, E0, EN) = (0, 1, 1) + 4: (E1, E0, EN) = (1, 0, 0) + 5: (E1, E0, EN) = (1, 0, 1) + 6: (E1, E0, EN) = (1, 1, 0) + 7: (E1, E0, EN) = (1, 1, 1) + So the valid arguments are from 0 to 7. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3, 4, 5, 6, 7] + bias-pull-down: true bias-pull-up: true