From patchwork Mon Jan 21 09:13:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Koul X-Patchwork-Id: 1028528 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="fSAaFY/f"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43jm9n4vTnz9sBQ for ; Mon, 21 Jan 2019 20:15:41 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727525AbfAUJPk (ORCPT ); Mon, 21 Jan 2019 04:15:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:49980 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725908AbfAUJPg (ORCPT ); Mon, 21 Jan 2019 04:15:36 -0500 Received: from localhost.localdomain (unknown [122.178.235.99]) (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 983FD2084A; Mon, 21 Jan 2019 09:15:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548062136; bh=4wfRImCxJDZDFzTbyJGiJL0Y9473cOcMB1rZVP3hZ3s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fSAaFY/fyTd2Id1OFt4idPhuXBcuFxkCgcz3WGW9lYOUX1hik9U5uRZxFqIb/QGox ufSeQnXhxZwlT/wJTkSRgHVW8IOJNOd6KWuyxlQSxFpZWSsmEbtiKKQuE/53oO7Abs 8kYDOxOzrf7SHJF4p0N7sNLXL/nkntHy4YkjlqgI= From: Vinod Koul To: David S Miller Cc: netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, Niklas Cassel , Bjorn Andersson , Vinod Koul , Andrew Lunn , Florian Fainelli Subject: [PATCH v3 5/5] net: dsa: qca8k: disable delay for RGMII mode Date: Mon, 21 Jan 2019 14:43:18 +0530 Message-Id: <20190121091318.20079-6-vkoul@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190121091318.20079-1-vkoul@kernel.org> References: <20190121091318.20079-1-vkoul@kernel.org> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In RGMII mode we should not have any delay in port MAC, so disable the delay. Signed-off-by: Vinod Koul --- drivers/net/dsa/qca8k.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c index 7e97e620bd44..a4b6cda38016 100644 --- a/drivers/net/dsa/qca8k.c +++ b/drivers/net/dsa/qca8k.c @@ -420,7 +420,7 @@ qca8k_mib_init(struct qca8k_priv *priv) static int qca8k_set_pad_ctrl(struct qca8k_priv *priv, int port, int mode) { - u32 reg; + u32 reg, val; switch (port) { case 0: @@ -439,17 +439,9 @@ qca8k_set_pad_ctrl(struct qca8k_priv *priv, int port, int mode) */ switch (mode) { case PHY_INTERFACE_MODE_RGMII: - qca8k_write(priv, reg, - QCA8K_PORT_PAD_RGMII_EN | - QCA8K_PORT_PAD_RGMII_TX_DELAY(3) | - QCA8K_PORT_PAD_RGMII_RX_DELAY(3)); - - /* According to the datasheet, RGMII delay is enabled through - * PORT5_PAD_CTRL for all ports, rather than individual port - * registers - */ - qca8k_write(priv, QCA8K_REG_PORT5_PAD_CTRL, - QCA8K_PORT_PAD_RGMII_RX_DELAY_EN); + /* RGMII mode means no delay so don't enable the delay */ + val = QCA8K_PORT_PAD_RGMII_EN; + qca8k_write(priv, reg, val); break; case PHY_INTERFACE_MODE_SGMII: qca8k_write(priv, reg, QCA8K_PORT_PAD_SGMII_EN);