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 1874FC7618E for ; Mon, 24 Apr 2023 13:20:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231972AbjDXNUy (ORCPT ); Mon, 24 Apr 2023 09:20:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231975AbjDXNUl (ORCPT ); Mon, 24 Apr 2023 09:20:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 208D54EF2 for ; Mon, 24 Apr 2023 06:20:16 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id F337A621D9 for ; Mon, 24 Apr 2023 13:20:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1117DC433EF; Mon, 24 Apr 2023 13:20:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1682342415; bh=60KjthHM48i7AZz9pQMoSqw2N8MTW3cZYBNSr5AgoMU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OEC8ajg9vzEJktWdWyzeOyrpjKIg8wzZWOZMz2vAPT83VAZIoHgi67RkRaIORuheG NqdXA7hm432Q/gTpBrIOWxB+KQZcLsB0FoDiWzltLQOtLELCe+TiC3fytyhU+nMm7z n16cCeuTqzkW2lqQ1RcKcNf9o84J0HBOOmGwALrs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= , Florian Fainelli , "David S. Miller" , Sasha Levin Subject: [PATCH 5.15 31/73] net: dsa: b53: mmap: add phy ops Date: Mon, 24 Apr 2023 15:16:45 +0200 Message-Id: <20230424131130.150338621@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230424131129.040707961@linuxfoundation.org> References: <20230424131129.040707961@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Álvaro Fernández Rojas [ Upstream commit 45977e58ce65ed0459edc9a0466d9dfea09463f5 ] Implement phy_read16() and phy_write16() ops for B53 MMAP to avoid accessing B53_PORT_MII_PAGE registers which hangs the device. This access should be done through the MDIO Mux bus controller. Signed-off-by: Álvaro Fernández Rojas Acked-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/dsa/b53/b53_mmap.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/net/dsa/b53/b53_mmap.c b/drivers/net/dsa/b53/b53_mmap.c index 3388f620fac99..ca6f53c630676 100644 --- a/drivers/net/dsa/b53/b53_mmap.c +++ b/drivers/net/dsa/b53/b53_mmap.c @@ -216,6 +216,18 @@ static int b53_mmap_write64(struct b53_device *dev, u8 page, u8 reg, return 0; } +static int b53_mmap_phy_read16(struct b53_device *dev, int addr, int reg, + u16 *value) +{ + return -EIO; +} + +static int b53_mmap_phy_write16(struct b53_device *dev, int addr, int reg, + u16 value) +{ + return -EIO; +} + static const struct b53_io_ops b53_mmap_ops = { .read8 = b53_mmap_read8, .read16 = b53_mmap_read16, @@ -227,6 +239,8 @@ static const struct b53_io_ops b53_mmap_ops = { .write32 = b53_mmap_write32, .write48 = b53_mmap_write48, .write64 = b53_mmap_write64, + .phy_read16 = b53_mmap_phy_read16, + .phy_write16 = b53_mmap_phy_write16, }; static int b53_mmap_probe_of(struct platform_device *pdev, -- 2.39.2