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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FROM_EXCESS_BASE64,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 2F9DEC41514 for ; Thu, 22 Aug 2019 15:11:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE92A2082F for ; Thu, 22 Aug 2019 15:11:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=vdorst.com header.i=@vdorst.com header.b="dYtNjIu0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389456AbfHVPLU (ORCPT ); Thu, 22 Aug 2019 11:11:20 -0400 Received: from mx.0dd.nl ([5.2.79.48]:57788 "EHLO mx.0dd.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387755AbfHVPLT (ORCPT ); Thu, 22 Aug 2019 11:11:19 -0400 Received: from mail.vdorst.com (mail.vdorst.com [IPv6:fd01::250]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx.0dd.nl (Postfix) with ESMTPS id CC0475FC44; Thu, 22 Aug 2019 17:11:16 +0200 (CEST) Authentication-Results: mx.0dd.nl; dkim=pass (2048-bit key) header.d=vdorst.com header.i=@vdorst.com header.b="dYtNjIu0"; dkim-atps=neutral Received: from www (www.vdorst.com [192.168.2.222]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.vdorst.com (Postfix) with ESMTPSA id 793D71D85FE6; Thu, 22 Aug 2019 17:11:16 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.vdorst.com 793D71D85FE6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vdorst.com; s=default; t=1566486676; bh=pWtXsRVEPvLed/m0NhhlKu1CLza7De9LHyjrNdYZbdw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dYtNjIu04is6DPPpcRUqOnSHBRAWJuENhjamzlkFcc69mGO3UfQ3rsngHuva405Ha Sf5D+/HMAqHmafBNG8I9vTUaW1SbS+dtuyQPKaqOEwzoP+22izycD/C2tswjAIR9A8 z4YKAjK0nuAEI1H0+0Mk7BEakNXjYBNeM5QDi79kZSKYlaquhliHINULslkHDOW2aI c4/YqK5inUtYUUTbx5tmLY0lheFwhmR28bcfPzcQMTIqHRgOayJpgCQbp62D9Q9sHW +pgb9NVMHtGsvrCejRaJDOJF/5b0maqGgeBus9yWOdWZRepvuqnmewN04zsKY/7BzC wH5MogCvoHYew== Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by www.vdorst.com (Horde Framework) with HTTPS; Thu, 22 Aug 2019 15:11:16 +0000 Date: Thu, 22 Aug 2019 15:11:16 +0000 Message-ID: <20190822151116.Horde.3pVh2Kr0MEO82EWm7859Zd2@www.vdorst.com> From: =?utf-8?b?UmVuw6k=?= van Dorst To: Russell King - ARM Linux admin Cc: John Crispin , Sean Wang , Nelson Chang , "David S . Miller" , Matthias Brugger , Frank Wunderlich , netdev@vger.kernel.org, linux-mips@vger.kernel.org, linux-mediatek@lists.infradead.org, Stefan Roese , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH net-next v2 1/3] net: ethernet: mediatek: Add basic PHYLINK support References: <20190821144336.9259-1-opensource@vdorst.com> <20190821144336.9259-2-opensource@vdorst.com> <20190822142739.GS13294@shell.armlinux.org.uk> In-Reply-To: <20190822142739.GS13294@shell.armlinux.org.uk> User-Agent: Horde Application Framework 5 Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes MIME-Version: 1.0 Content-Disposition: inline Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi Russell, Quoting Russell King - ARM Linux admin : > On Wed, Aug 21, 2019 at 04:43:34PM +0200, René van Dorst wrote: >> +static void mtk_mac_link_down(struct phylink_config *config, >> unsigned int mode, >> + phy_interface_t interface) >> +{ >> + struct mtk_mac *mac = container_of(config, struct mtk_mac, >> + phylink_config); >> >> - return 0; >> + mtk_w32(mac->hw, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(mac->id)); >> } > > You set the MAC_MCR_FORCE_MODE bit here... > >> +static void mtk_mac_link_up(struct phylink_config *config, >> unsigned int mode, >> + phy_interface_t interface, >> + struct phy_device *phy) >> { >> + struct mtk_mac *mac = container_of(config, struct mtk_mac, >> + phylink_config); >> + u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); >> >> + mcr |= MAC_MCR_TX_EN | MAC_MCR_RX_EN; >> + mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); >> +} > > Looking at this, a link_down() followed by a link_up() would result in > this register containing MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | > MAC_MCR_RX_EN ? Is that actually correct? (MAC_MCR_FORCE_LINK isn't > set, so it looks to me like it still forces the link down.) Thanks for reviewing. Probably not. I assumed that mac_config() is always called before link_up() I simply can make it the opposite of link_up() like this: static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode, phy_interface_t interface) { struct mtk_mac *mac = container_of(config, struct mtk_mac, phylink_config); u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); mcr &= (MAC_MCR_TX_EN | MAC_MCR_RX_EN); mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); } > > Note that link up/down forcing should not be done for in-band AN. > This means that mac_config() of the SGMII patch is also incorrect? mac_config() always sets the MAC in a force mode. But the SGMII block is set in AN. Mainline code seems to do the same. Puts the SGMII block in AN or forced mode and always set the MAC in forced mode. >> +static void mtk_validate(struct phylink_config *config, >> + unsigned long *supported, >> + struct phylink_link_state *state) >> +{ >> + struct mtk_mac *mac = container_of(config, struct mtk_mac, >> + phylink_config); >> + __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; >> >> + if (state->interface != PHY_INTERFACE_MODE_NA && >> + state->interface != PHY_INTERFACE_MODE_MII && >> + state->interface != PHY_INTERFACE_MODE_GMII && >> + !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_RGMII) && >> + phy_interface_mode_is_rgmii(state->interface)) && >> + !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_TRGMII) && >> + !mac->id && state->interface == PHY_INTERFACE_MODE_TRGMII)) { >> + linkmode_zero(supported); >> + return; >> } >> >> + phylink_set_port_modes(mask); >> + phylink_set(mask, Autoneg); >> >> + if (state->interface == PHY_INTERFACE_MODE_TRGMII) { >> + phylink_set(mask, 1000baseT_Full); >> + } else { >> + phylink_set(mask, 10baseT_Half); >> + phylink_set(mask, 10baseT_Full); >> + phylink_set(mask, 100baseT_Half); >> + phylink_set(mask, 100baseT_Full); >> + >> + if (state->interface != PHY_INTERFACE_MODE_MII) { >> + phylink_set(mask, 1000baseT_Half); >> + phylink_set(mask, 1000baseT_Full); >> + phylink_set(mask, 1000baseX_Full); >> + } >> + } >> >> + phylink_set(mask, Pause); >> + phylink_set(mask, Asym_Pause); >> >> + linkmode_and(supported, supported, mask); >> + linkmode_and(state->advertising, state->advertising, mask); >> } > > This looks fine. OK. > Thanks. > > -- > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up > According to speedtest.net: 11.9Mbps down 500kbps up Greats, René 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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,FROM_EXCESS_BASE64,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 DDAD4C3A5A3 for ; Thu, 22 Aug 2019 15:11:26 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id B4054233FD for ; 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