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 74415C2BA12 for ; Sat, 16 Sep 2023 18:25:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237072AbjIPSZc (ORCPT ); Sat, 16 Sep 2023 14:25:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236500AbjIPSZO (ORCPT ); Sat, 16 Sep 2023 14:25:14 -0400 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D010CE6; Sat, 16 Sep 2023 11:25:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender: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-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=xaTgqIRqEW118i1euHWPGl1GL4m7oLRslyef9vzxato=; b=cMTQ5S0H6ptadVHrLUVUPezYG0 M/m9SP+CLoFdyO2PpoZEf5Ld6DB59iCsLWDck05pQLQDBzS050zVFVFDppfLyXkFDpX2nA+G/x10F nUyJ1hPFsUIrnBQ24CHqasjX/Mmqnqvy+Y41WlSNOFxP9Cuwx8cSG/nXTAtt95OQi03B8pkCatQpW hDgHmHJj/FNxOxFAcXuHdkTaBlcSxOnSvsDzlYQrEhoNkl4jAPPBvPbW03oCBYytNzrIyLiLEtZ+E hJLzXV137LRsaeX/ajGL72d+sO8izCz9F8L9Hl1Nmoq96ettQHwKEm3GOCVWkQHDKzYoVca2sdnQG x9Lo2Jyg==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:38474) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1qhZyG-0006uM-23; Sat, 16 Sep 2023 19:24:44 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1qhZyA-00072B-OD; Sat, 16 Sep 2023 19:24:38 +0100 Date: Sat, 16 Sep 2023 19:24:38 +0100 From: "Russell King (Oracle)" To: Daniel Golle Cc: Felix Fietkau , John Crispin , Sean Wang , Mark Lee , Lorenzo Bianconi , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, llvm@lists.linux.dev, ndesaulniers@google.com, nathan@kernel.org, trix@redhat.com Subject: Re: [PATCH net-next] net: ethernet: mtk_eth_soc: add paths and SerDes modes for MT7988 Message-ID: References: <675b5abd8b40a71c177e9e4e4c92d2d6b1413b9b.1694527316.git.daniel@makrotopia.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <675b5abd8b40a71c177e9e4e4c92d2d6b1413b9b.1694527316.git.daniel@makrotopia.org> Sender: Russell King (Oracle) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 12, 2023 at 03:54:40PM +0100, Daniel Golle wrote: > +static void mtk_usxgmii_pcs_get_state(struct phylink_pcs *pcs, > + struct phylink_link_state *state) > +{ > + struct mtk_usxgmii_pcs *mpcs = pcs_to_mtk_usxgmii_pcs(pcs); > + struct mtk_eth *eth = mpcs->eth; > + struct mtk_mac *mac = eth->mac[mtk_xgmii2mac_id(eth, mpcs->id)]; > + u32 val = 0; > + > + regmap_read(mpcs->regmap, RG_PCS_AN_CTRL0, &val); > + if (FIELD_GET(USXGMII_AN_ENABLE, val)) { > + /* Refresh LPA by inverting LPA_LATCH */ > + regmap_read(mpcs->regmap, RG_PCS_AN_STS0, &val); > + regmap_update_bits(mpcs->regmap, RG_PCS_AN_STS0, > + USXGMII_LPA_LATCH, > + !(val & USXGMII_LPA_LATCH)); > + > + regmap_read(mpcs->regmap, RG_PCS_AN_STS0, &val); > + > + phylink_decode_usxgmii_word(state, FIELD_GET(USXGMII_PCS_AN_WORD, > + val)); > + > + state->interface = mpcs->interface; Why are you assigning state->interface? > + } else { > + val = mtk_r32(mac->hw, MTK_XGMAC_STS(mac->id)); > + > + if (mac->id == MTK_GMAC2_ID) > + val >>= 16; > + > + switch (FIELD_GET(MTK_USXGMII_PCS_MODE, val)) { > + case 0: > + state->speed = SPEED_10000; > + break; > + case 1: > + state->speed = SPEED_5000; > + break; > + case 2: > + state->speed = SPEED_2500; > + break; > + case 3: > + state->speed = SPEED_1000; > + break; > + } > + > + state->interface = mpcs->interface; > + state->link = FIELD_GET(MTK_USXGMII_PCS_LINK, val); > + state->duplex = DUPLEX_FULL; > + } > + > + /* Refresh USXGMII link status by toggling RG_PCS_RX_STATUS_UPDATE */ > + regmap_set_bits(mpcs->regmap, RG_PCS_RX_STATUS0, RG_PCS_RX_STATUS_UPDATE); > + ndelay(1020); > + regmap_clear_bits(mpcs->regmap, RG_PCS_RX_STATUS0, RG_PCS_RX_STATUS_UPDATE); > + ndelay(1020); > + > + /* Read USXGMII link status */ > + regmap_read(mpcs->regmap, RG_PCS_RX_STATUS0, &val); > + state->link = state->link && FIELD_GET(RG_PCS_RX_LINK_STATUS, val); Doesn't this make the assignment to state->link above irrelevant? I need to spend a bit longer looking through this - it looks like there are three levels of indirection in this now? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!