From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) (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 88FDF35CB7B; Mon, 19 Jan 2026 12:43:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=78.32.30.218 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768826628; cv=none; b=agqHtxzDIyLi4kACbZIgdNGZt1lMH+Jh/UArdSIWcfrnTX865Yo2pyW6oryTQtBGCW8xIg4mddF3DVMr145j9ZJuFsyYvTEkCvVZKnXEX8AAyf9bi8v/CJuusQaaObSkyvrZiLoqOWRZRX37WM6fAcitY0hdKtduKNxCiYW3++E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768826628; c=relaxed/simple; bh=kINmhQmoaLnJyInheFAGtb14x04Fk6egTTyMWNJsc6g=; h=In-Reply-To:References:From:To:Cc:Subject:MIME-Version: Content-Disposition:Content-Type:Message-Id:Date; b=kBVF1F7OcWIjPiF49gZh+MqQRYf9PowPPADQI5YvpHejrTa7uLb3UXiKxspQSnFfIyjr2j51tO/xAoBLjKiDuePb9RbYaiSy8gW04Uo3KUel8rgn0pUNl/KOyFnqR2UQwhCpbHvlKrhhm9v7gO4+q7gFcNQaxJX/b6b+BQz+LCE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk; spf=none smtp.mailfrom=armlinux.org.uk; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b=VXD9XtlT; arc=none smtp.client-ip=78.32.30.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="VXD9XtlT" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Date:Sender:Message-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References: In-Reply-To:Reply-To: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=rVE0ichfCCZBPxaV5iFEVGkv6qOUUWRLscyvBIVG1Cw=; b=VXD9XtlTrwqp2iFObc8SpvyvfD qK3o/iLfigIhubYNhujRW8xr+T9v/Q8wNHNoc2WN8zrMClJnPtJuk3HAGIR9HTmLX5gnfNpupHAEj 6c55NoRjc7iTYCrSah8LTL0MyXBfvJgNZtaJJVP4PLzyO7JrBTpaV38y9VZRUt3ZAbgJfkVii+E8P FJKfRoKym2PzBiuRTuIpYb7JqtFYcTnMzSBuwBnsrEaiEZJ9GTuohK48ffot9zQvdqERnb/LR0e81 n7WXt9H9JBCLQiFTrt4QxQ5D+0wGteUgMWq4lq7kzb1jZjJTcFVdzZj71A0H60NDfw4J25263Q1hk gd5qY7vQ==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:36892 helo=rmk-PC.armlinux.org.uk) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vhoT2-0000000055D-3PEm; Mon, 19 Jan 2026 12:34:48 +0000 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.98.2) (envelope-from ) id 1vhoT1-00000005H2a-3EnB; Mon, 19 Jan 2026 12:34:47 +0000 In-Reply-To: References: From: "Russell King (Oracle)" To: Andrew Lunn , Heiner Kallweit Cc: Alexandre Torgue , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, Maxime Chevallier , Maxime Coquelin , Mohd Ayaan Anwar , Neil Armstrong , netdev@vger.kernel.org, Paolo Abeni , Vinod Koul Subject: [PATCH net-next 14/14] net: stmmac: report PCS configuration changes Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="utf-8" Message-Id: Sender: Russell King Date: Mon, 19 Jan 2026 12:34:47 +0000 Report if/when qcom-ethqos changes the PCS configuration. With phylink now setting the PCS configuration, there should be no need for drivers to change this. Signed-off-by: Russell King (Oracle) --- drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h index f9e7a7ed840b..6a1e30b10740 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h @@ -71,6 +71,7 @@ static inline void dwmac_ctrl_ane(void __iomem *ioaddr, u32 reg, bool ane, bool srgmi_ral) { u32 value = readl(ioaddr + GMAC_AN_CTRL(reg)); + u32 old = value, diff; /* Enable and restart the Auto-Negotiation */ if (ane) @@ -84,6 +85,20 @@ static inline void dwmac_ctrl_ane(void __iomem *ioaddr, u32 reg, bool ane, if (srgmi_ral) value |= GMAC_AN_CTRL_SGMRAL; + diff = old ^ value; + if (diff & ~GMAC_AN_CTRL_RAN) { + pr_warn("dwmac: PCS configuration changed from phylink by glue, please report: 0x%08x -> 0x%08x\n", + old & ~GMAC_AN_CTRL_RAN, value & ~GMAC_AN_CTRL_RAN); +#define REPORT_BIT(x) \ + if (diff & GMAC_AN_CTRL_##x) \ + pr_warn("dwmac: %8s %u -> %u\n", #x, \ + !!(old & GMAC_AN_CTRL_##x), \ + !!(value & GMAC_AN_CTRL_##x)) + REPORT_BIT(ANE); + REPORT_BIT(SGMRAL); +#undef REPORT_BIT + } + writel(value, ioaddr + GMAC_AN_CTRL(reg)); } #endif /* __STMMAC_PCS_H__ */ -- 2.47.3