From patchwork Wed Apr 16 10:09:33 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Russell King (Oracle)" X-Patchwork-Id: 14053621 X-Patchwork-Delegate: kuba@kernel.org 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 8F675236430 for ; Wed, 16 Apr 2025 10:10:24 +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=1744798226; cv=none; b=h9JZrGgVcOO5MjYWZbb1jerzXR/gsh/rigSCpZ8kJbalSJotLd56s1NwMSh5JuIK/GYKSSwmwZJIpAHqdqM5l/qPOq3H7U699r2sq6gGQM5KNf12p9/LXMFaFN5iGP3mxNtYHgyPtL+fYWCdwP2sTwh2zqBAOinmQ8NPJ+hfssk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744798226; c=relaxed/simple; bh=UcUGcOK+S4LsFTHnlbRzxrJbrmT2OLrU0stB78O8tp0=; h=From:To:Cc:Subject:MIME-Version:Content-Disposition:Content-Type: Message-Id:Date; b=e5hau6cIpEuaHAz4ggFPe3S6KVUV5tbyYFo69LifCGk7q6X5rdp5q2eiyxqI1nWw8gkyoAxbARLRIEnRCSEAd9jE6CMja3wVHMxJ2VFiyex0Yv0qcepVYucIZTIFTCAG+BKCDdH7UBsxG+frj6zjh+1Yx3OcXnMEvKAiF8DPoyQ= 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=ev55wIti; 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="ev55wIti" 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:Reply-To:Content-ID :Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To: Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=qiJY99ai7mGDr2FC9ZGU82aOrwFyMKWX9y0r6QczlqM=; b=ev55wIti9sjkf3oCexLnb5YgA9 R5WFBviTDjeT1r6A31bJxkwq2J1FXwdT8bKtrzAfM4VxqH5iklJwHzIr9gDt72WD8RECSkQYy1dwb OnHHcSXJ6qjXAOjIYix1PyTsgxLw0eXKiKRtSyDy/jPcIcKFtEFPHJqqeAFpsc3EyULQxhek18hIK Nr8Yijxe1F+TxA3GO5kOFBNH3SKhpelPQPQmCs4RFzPdhzgbt8GJRIVrZYfEV6cvg9Yh0+ZqhHCjk tpz6i4XvzAoJOT/VrmWWJ5SpFFiTq+MSfw5RGcFaONxXrsgCMIANsSve0Os43g0YmH68rbZSHtTQx 8pwGmbfw==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:33274 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 4.96) (envelope-from ) id 1u4zic-00011J-2A; Wed, 16 Apr 2025 11:10:10 +0100 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1u4zi1-000xHh-57; Wed, 16 Apr 2025 11:09:33 +0100 From: "Russell King (Oracle)" To: Andrew Lunn , Heiner Kallweit Cc: Alexandre Torgue , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Jon Hunter , linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, Maxime Coquelin , netdev@vger.kernel.org, Paolo Abeni , Thierry Reding Subject: [PATCH net-next] net: stmmac: dwc-qos: use PHY clock-stop capability Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Message-Id: Sender: Russell King Date: Wed, 16 Apr 2025 11:09:33 +0100 X-Patchwork-Delegate: kuba@kernel.org Use the PHY clock-stop capability when programming the MAC LPI mode, which allows the transmit clock to the PHY to be gated. Tested on the Jetson Xavier NX platform. Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn --- drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c index 583b5c071cd1..fa900b4991d0 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c @@ -252,7 +252,8 @@ static int tegra_eqos_probe(struct platform_device *pdev, plat_dat->fix_mac_speed = tegra_eqos_fix_speed; plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate; plat_dat->bsp_priv = eqos; - plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE; + plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE | + STMMAC_FLAG_EN_TX_LPI_CLK_PHY_CAP; return 0;