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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9E430C433E0 for ; Tue, 9 Jun 2020 17:49:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 68EEC20820 for ; Tue, 9 Jun 2020 17:49:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591724970; bh=hTuX6Gj/Z///hx0xMNbk6em5czwcq15xu7qUuc2sooU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yCzumY1oDSU4UdnRcRmt14P6cubNeGmrvv2aaRLbbZfE/yF+//jTTDtFE+7SNiFHo 2erfmAStsXTl+dFoh1SXdbbcGkYvCnXe1jwOxixGEQKLTlgmmaKA4bgeSDxUBpVzJt FMUK5qOs5V9kPk2m3KdnnEtlHobZb6wqf/NEhaCk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732509AbgFIRt1 (ORCPT ); Tue, 9 Jun 2020 13:49:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:35324 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732506AbgFIRtZ (ORCPT ); Tue, 9 Jun 2020 13:49:25 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 23D0D2081A; Tue, 9 Jun 2020 17:49:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591724964; bh=hTuX6Gj/Z///hx0xMNbk6em5czwcq15xu7qUuc2sooU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eENykR2GyjDUhH3ho0X8ykwVgaZkYpsWDVPy1q02W8jOZ3m9gvUKqIDiC/E1L1k9b QJOSeBX4Q1KovLXaq/CbLC4WgUvMxQI/s2kzhJ5Lh6AmWAzRut7165aFxSv532hTw/ RXT9MOjfBf8ZG3gcwRR/u8M9E6vdQXKsFTFQ95sc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan McDowell , "David S. Miller" , Sasha Levin Subject: [PATCH 4.14 13/46] net: ethernet: stmmac: Enable interface clocks on probe for IPQ806x Date: Tue, 9 Jun 2020 19:44:29 +0200 Message-Id: <20200609174024.110413848@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200609174022.938987501@linuxfoundation.org> References: <20200609174022.938987501@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jonathan McDowell [ Upstream commit a96ac8a0045e3cbe3e5af6d1b3c78c6c2065dec5 ] The ipq806x_gmac_probe() function enables the PTP clock but not the appropriate interface clocks. This means that if the bootloader hasn't done so attempting to bring up the interface will fail with an error like: [ 59.028131] ipq806x-gmac-dwmac 37600000.ethernet: Failed to reset the dma [ 59.028196] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_hw_setup: DMA engine initialization failed [ 59.034056] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_open: Hw setup failed This patch, a slightly cleaned up version of one posted by Sergey Sergeev in: https://forum.openwrt.org/t/support-for-mikrotik-rb3011uias-rm/4064/257 correctly enables the clock; we have already configured the source just before this. Tested on a MikroTik RB3011. Signed-off-by: Jonathan McDowell Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c index 11a4a81b0397..bcc5d1e16ce2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c @@ -330,6 +330,19 @@ static int ipq806x_gmac_probe(struct platform_device *pdev) /* Enable PTP clock */ regmap_read(gmac->nss_common, NSS_COMMON_CLK_GATE, &val); val |= NSS_COMMON_CLK_GATE_PTP_EN(gmac->id); + switch (gmac->phy_mode) { + case PHY_INTERFACE_MODE_RGMII: + val |= NSS_COMMON_CLK_GATE_RGMII_RX_EN(gmac->id) | + NSS_COMMON_CLK_GATE_RGMII_TX_EN(gmac->id); + break; + case PHY_INTERFACE_MODE_SGMII: + val |= NSS_COMMON_CLK_GATE_GMII_RX_EN(gmac->id) | + NSS_COMMON_CLK_GATE_GMII_TX_EN(gmac->id); + break; + default: + /* We don't get here; the switch above will have errored out */ + unreachable(); + } regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val); if (gmac->phy_mode == PHY_INTERFACE_MODE_SGMII) { -- 2.25.1