From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EB0142108 for ; Mon, 24 Apr 2023 13:35:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 719D5C433D2; Mon, 24 Apr 2023 13:35:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1682343330; bh=F//45VwgUYwqnq/zqqoCuZrjr2a4lXeB7zZZmi+WW18=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ud8KNRQeAQmjK3yuEtmWkoUGEJJSwOR50XwQJO8k6UuxFsxWSUzTskh6K5gHJKu9x fs/gmnvwv6QdawxNf1AcEMnVvSXJr01ZaOvnme4c9JfmVwfS4SLMll/HG6/VOTZ7Gs jzt4Gzc0CBp/QEeNqunnsbG8eAigmneMhmp16BDI= 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 5.10 24/68] net: dsa: b53: mmap: add phy ops Date: Mon, 24 Apr 2023 15:17:55 +0200 Message-Id: <20230424131128.561674563@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230424131127.653885914@linuxfoundation.org> References: <20230424131127.653885914@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 c628d0980c0b1..1d52cb3e46d52 100644 --- a/drivers/net/dsa/b53/b53_mmap.c +++ b/drivers/net/dsa/b53/b53_mmap.c @@ -215,6 +215,18 @@ 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, @@ -226,6 +238,8 @@ 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(struct platform_device *pdev) -- 2.39.2