From patchwork Mon Apr 18 01:40:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dylan Hung X-Patchwork-Id: 12816197 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 86B98C433EF for ; Mon, 18 Apr 2022 01:41:10 +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=zFbP0bUltFblr13AuUqOxFb7154Jf7O23upi7eKkV14=; b=1x5lm/LuoJapWC 6ZzC7Y3CAttvHHzGuy+j6zIM5eZLScMjfFVc+3IosJs/im4EmSxOhRI8jRBZOurzzpc4m8+t/9aaP 31Xlma1KkZ38cFHMgP+WsCCsGGU0mCDZPGsU04Ec+TYUyyGpqhkpIbDy5HqaCELDq0Bk913MYoGxS roXazLELHX/OzElrg7Je/YHEbWU1YuX9+k191wyK5JyyUJmk/JysebzW102bPctsmzl+RA9Lvp/zP 5kCWYHI0LERMTT/KnnITrt2rj270pixrCVnceqFfaM44hlwqbN97t2zqSGFVOWgbtxhkVp4FDmr+K bkgFFhUZ6gs8+EHNIHiA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ngGMz-00FEVX-HK; Mon, 18 Apr 2022 01:40:01 +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 1ngGMX-00FEQI-IT for linux-arm-kernel@lists.infradead.org; Mon, 18 Apr 2022 01:39:35 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 23I1QgQm071541; Mon, 18 Apr 2022 09:26:42 +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; Mon, 18 Apr 2022 09:38:41 +0800 From: Dylan Hung To: , , , , , , , , , , , , , , , CC: , Krzysztof Kozlowski Subject: [PATCH net-next RESEND v5 1/3] dt-bindings: net: add reset property for aspeed, ast2600-mdio binding Date: Mon, 18 Apr 2022 09:40:57 +0800 Message-ID: <20220418014059.3054-2-dylan_hung@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220418014059.3054-1-dylan_hung@aspeedtech.com> References: <20220418014059.3054-1-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 23I1QgQm071541 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220417_183934_003059_D74DE67A X-CRM114-Status: UNSURE ( 9.15 ) 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 Reviewed-by: Andrew Jeffery --- .../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";