From patchwork Thu Apr 7 07:57:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dylan Hung X-Patchwork-Id: 12804623 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 6082AC433EF for ; Thu, 7 Apr 2022 07:59:03 +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=GyAeRGyQ8fawARrhLbS9nlD+i7ndGP4qsA4xgD9wfc4=; b=SW8fnEA857XbMs FyNO5eI4UNriOB4rkme6VbITD8FCVJ3iGd5uBXxZOBigzE3Jvj/O0ebCqeGXXmaflOEbaJNNYOyjI gsJJOPq6qnkV+6zPen8oQ7gvY9rUqB+F03eIDL44WYedOfLqdvYhk7pnhfVlX0KhU9Qu4FWou1GoU LtXbM813CfD3J4PlkfphYLj1t3gtR8BFpTGrMusq9Lwp5X4ZXumCRpU0QBOPua/nKOapZM54gTCwx RGBGDnMXne8o2dDKF+shZTCriv0/WL/lz0+ITiFH+Hipt3Jb6MW8XNEJQBmOHBC2guzwOqgUqodY5 zE7ZSn+kwjQz+bdor16Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ncN1R-00AATT-GZ; Thu, 07 Apr 2022 07:57:41 +0000 Received: from [211.20.114.71] (helo=twspam01.aspeedtech.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ncN0i-00AAAt-HV for linux-arm-kernel@lists.infradead.org; Thu, 07 Apr 2022 07:57:00 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 2377id24045433; Thu, 7 Apr 2022 15:44:39 +0800 (GMT-8) (envelope-from dylan_hung@aspeedtech.com) Received: from DylanHung-PC.aspeed.com (192.168.2.216) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 7 Apr 2022 15:56:00 +0800 From: Dylan Hung To: , , , , , , , , , , , , , , CC: , Krzysztof Kozlowski Subject: [PATCH RESEND v3 1/3] dt-bindings: net: add reset property for aspeed, ast2600-mdio binding Date: Thu, 7 Apr 2022 15:57:32 +0800 Message-ID: <20220407075734.19644-2-dylan_hung@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220407075734.19644-1-dylan_hung@aspeedtech.com> References: <20220407075734.19644-1-dylan_hung@aspeedtech.com> MIME-Version: 1.0 X-Originating-IP: [192.168.2.216] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 2377id24045433 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220407_005657_041498_95023FC1 X-CRM114-Status: UNSURE ( 9.27 ) X-CRM114-Notice: Please train this message. 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 The AST2600 MDIO bus controller has a reset control bit and must be deasserted before manipulating the MDIO controller. By default, the hardware asserts the reset so the driver only need to deassert it. Regarding to the old DT blobs which don't have reset property in them, the reset deassertion is usually done by the bootloader so the reset property is optional to work with them. Signed-off-by: Dylan Hung Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/net/aspeed,ast2600-mdio.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml b/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml index 1c88820cbcdf..7f43b4fe86a3 100644 --- a/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml +++ b/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml @@ -20,10 +20,14 @@ allOf: properties: compatible: const: aspeed,ast2600-mdio + reg: maxItems: 1 description: The register range of the MDIO controller instance + resets: + maxItems: 1 + required: - compatible - reg @@ -39,6 +43,7 @@ examples: reg = <0x1e650000 0x8>; #address-cells = <1>; #size-cells = <0>; + resets = <&syscon 35>; ethphy0: ethernet-phy@0 { compatible = "ethernet-phy-ieee802.3-c22";