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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B8B3C433EF for ; Wed, 13 Apr 2022 12:09:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235415AbiDMMLU (ORCPT ); Wed, 13 Apr 2022 08:11:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235401AbiDMMLS (ORCPT ); Wed, 13 Apr 2022 08:11:18 -0400 Received: from twspam01.aspeedtech.com (twspam01.aspeedtech.com [211.20.114.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 998405D1AE for ; Wed, 13 Apr 2022 05:08:55 -0700 (PDT) Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 23DBusoL017389; Wed, 13 Apr 2022 19:56:54 +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; Wed, 13 Apr 2022 20:08:38 +0800 From: Dylan Hung To: , , , , , , , , , , , , , , , CC: , Krzysztof Kozlowski Subject: [PATCH v5 1/3] dt-bindings: net: add reset property for aspeed, ast2600-mdio binding Date: Wed, 13 Apr 2022 20:10:35 +0800 Message-ID: <20220413121037.23748-2-dylan_hung@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220413121037.23748-1-dylan_hung@aspeedtech.com> References: <20220413121037.23748-1-dylan_hung@aspeedtech.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII 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 23DBusoL017389 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.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 | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml b/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml index 1c88820cbcdf..f81eda8cb0a5 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 @@ -34,11 +38,13 @@ unevaluatedProperties: false examples: - | + #include mdio0: mdio@1e650000 { compatible = "aspeed,ast2600-mdio"; reg = <0x1e650000 0x8>; #address-cells = <1>; #size-cells = <0>; + resets = <&syscon ASPEED_RESET_MII>; ethphy0: ethernet-phy@0 { compatible = "ethernet-phy-ieee802.3-c22"; -- 2.25.1