From patchwork Wed Mar 29 16:00:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 13192843 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 0B6B5C74A5B for ; Wed, 29 Mar 2023 16:00:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=aqizc6/ZjAWz90A3jk7+7u+bSaPAPILOhNROkch9Cc4=; b=xN7JJJbvwcZe6MMB1ZIgxUqfX8 tkeGgXieO2jpQbAp7qB0YOmxdXdTh/YXz4T4XXoJpxmhpdCZaiYWOcjJtVJYmDlVb7SKIR/MIBVFD argECF+Br7BhgrvjQLWFhc9y2J+LGkcGLFDQ2NsCq+6JAAD7iyTxnRkh/0FCgcBWfce9Xl7zMBozM qS7WgB89ADCta6ZqDYf7fQN/FnSvbDW7hHAY2L5f8iEbDoWmosjBcDB0OJ21Hue1T2QglMwrh1Qm0 plYpa/mwX+AVLHXpGuJQCdaYaDoqk7C0Rw6OAr7y2ujGic5QB4Fg6j+JFsgKxeJu2LccB/yNs7rJo TwyKwLWQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1phYDm-000xGH-1Z; Wed, 29 Mar 2023 16:00:22 +0000 Received: from fudo.makrotopia.org ([2a07:2ec0:3002::71]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1phYDg-000xBU-1U; Wed, 29 Mar 2023 16:00:18 +0000 Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1phYDc-0003S1-1W; Wed, 29 Mar 2023 18:00:13 +0200 Date: Wed, 29 Mar 2023 17:00:06 +0100 From: Daniel Golle To: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andrew Lunn , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , Sean Wang , Landen Chao , DENG Qingfang , Philipp Zabel Cc: Sam Shih , Lorenzo Bianconi , John Crispin , Felix Fietkau Subject: [RFC PATCH net-next v3 12/15] net: dsa: mt7530: add support for single-chip reset line Message-ID: <0f696278bd8d13121a500f80cfe2f806debe4da5.1680105013.git.daniel@makrotopia.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230329_090016_519213_972B9F70 X-CRM114-Status: GOOD ( 12.69 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Similar to multi-chip-module MT7530 also MT7988 uses an internal reset line instead of using an optional reset GPIO like it is the case for external MT7530 and MT7531 ICs. Add support for internal but non-MCM reset line in preparation for adding support for MT7988. Signed-off-by: Daniel Golle --- drivers/net/dsa/mt7530.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index c6fad2d156160..fd55ddc2d1eb3 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -3066,6 +3066,12 @@ mt7530_probe_common(struct mt7530_priv *priv) dev_err(dev, "Couldn't get our reset line\n"); return PTR_ERR(priv->rstc); } + } else if (!priv->bus) { + priv->rstc = devm_reset_control_get(dev, NULL); + if (IS_ERR(priv->rstc)) { + dev_err(dev, "Couldn't get our reset line\n"); + return PTR_ERR(priv->rstc); + } } else { priv->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);