From patchwork Mon Apr 18 01:40:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dylan Hung X-Patchwork-Id: 12816194 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 B1796C433F5 for ; Mon, 18 Apr 2022 01:40:55 +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: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:In-Reply-To:References: List-Owner; bh=vPE6f6I1N6Xy105tdpWw+W3tSIicwvcxtBlsWx4U6dk=; b=PMHdB4WhRiJk1a u65soBdFI6KXlAM4YAeO9Y4mTYWzcCd+0YNyjyP3KmPsfwJLCf20QMgnhjlH+stfNKsCFeux69vpM tOCoMwdEe9b5AD4qnEahYYOxSshc9Nnud3ECIRaS34NAy7n/xrqy5T789OxO3XxO3MthYE7hmlCNq oiG0xxsD0bQJ4d5ZHmI/OHYp6B8L7dEDQypzueovpy1tzbbDPCZctEucSqRnIddyyxytTZ9RjM5XB MmrDSKSaX+u0WPn9Cl83f4FwXA4PSVipqO/gbNtXenZ4BbE0/x5qQkaVuAH/PzCgq68RZ/03ykHla YRT9ksoEgX4QIpDpJasQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ngGMi-00FESv-R1; Mon, 18 Apr 2022 01:39:44 +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 1ngGMW-00FEQ3-Sa for linux-arm-kernel@lists.infradead.org; Mon, 18 Apr 2022 01:39:34 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 23I1QgcW071540; 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: Subject: [PATCH net-next RESEND v5 0/3] Add reset deassertion for Aspeed MDIO Date: Mon, 18 Apr 2022 09:40:56 +0800 Message-ID: <20220418014059.3054-1-dylan_hung@aspeedtech.com> X-Mailer: git-send-email 2.25.1 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 23I1QgcW071540 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220417_183933_314933_CF763CAF X-CRM114-Status: GOOD ( 11.13 ) 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 missing reset deassertion for Aspeed MDIO bus controller. The reset is asserted by the hardware when power-on so the driver only needs to deassert it. To be able to work with the old DT blobs, the reset is optional since it may be deasserted by the bootloader or the previous kernel. V5: - fix error of dt_binding_check V4: - use ASPEED_RESET_MII instead of hardcoding in dt-binding example V3: - remove reset property from the required list of the device tree bindings - remove "Cc: stable@vger.kernel.org" from the commit messages - add more description in the commit message of the dt-binding V2: - add reset property in the device tree bindings - add reset assertion in the error path and driver remove Dylan Hung (3): dt-bindings: net: add reset property for aspeed, ast2600-mdio binding net: mdio: add reset control for Aspeed MDIO ARM: dts: aspeed: add reset properties into MDIO nodes .../bindings/net/aspeed,ast2600-mdio.yaml | 6 ++++++ arch/arm/boot/dts/aspeed-g6.dtsi | 4 ++++ drivers/net/mdio/mdio-aspeed.c | 15 ++++++++++++++- 3 files changed, 24 insertions(+), 1 deletion(-)