From patchwork Tue Apr 12 06:56:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dylan Hung X-Patchwork-Id: 12810220 X-Patchwork-Delegate: kuba@kernel.org 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 1A9B0C433EF for ; Tue, 12 Apr 2022 07:57:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238449AbiDLH72 (ORCPT ); Tue, 12 Apr 2022 03:59:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353525AbiDLHPl (ORCPT ); Tue, 12 Apr 2022 03:15:41 -0400 Received: from twspam01.aspeedtech.com (twspam01.aspeedtech.com [211.20.114.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 73B9639B97; Mon, 11 Apr 2022 23:57:02 -0700 (PDT) Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 23C6gdB0026333; Tue, 12 Apr 2022 14:42:39 +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; Tue, 12 Apr 2022 14:54:18 +0800 From: Dylan Hung To: , , , , , , , , , , , , , , , CC: , Krzysztof Kozlowski Subject: [PATCH v4 1/3] dt-bindings: net: add reset property for aspeed, ast2600-mdio binding Date: Tue, 12 Apr 2022 14:56:09 +0800 Message-ID: <20220412065611.8930-2-dylan_hung@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220412065611.8930-1-dylan_hung@aspeedtech.com> References: <20220412065611.8930-1-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 23C6gdB0026333 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.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..1174c14898e1 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 ASPEED_RESET_MII>; ethphy0: ethernet-phy@0 { compatible = "ethernet-phy-ieee802.3-c22";