From patchwork Mon Mar 29 07:58:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 411597 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 70457C433E8 for ; Mon, 29 Mar 2021 08:07:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43CC861969 for ; Mon, 29 Mar 2021 08:07:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231128AbhC2IGs (ORCPT ); Mon, 29 Mar 2021 04:06:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:49094 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232187AbhC2IFu (ORCPT ); Mon, 29 Mar 2021 04:05:50 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5D81861974; Mon, 29 Mar 2021 08:05:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617005150; bh=Ng5+7RAmAVVpFm4rU5N9Ql0JO0uW5KTAgcyYeOTXTcc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uvs4tF2HgrMjeeczEHwbvViTnmwwAtTz7HXmULVXAGEzMs8k3NK+BV394O2f5/SY8 ihU7FRHcTAIF/KiZKfVPHNGKSFK744rqcF2kNRzFpSFXElKgYeO0QmeFojM8/zPTOl jwaTBtzf8lqsVaZ0LzLK/QZQ3TnvGGx5eM63q060= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Belisko Marek , Corentin Labbe , "David S. Miller" , Sasha Levin Subject: [PATCH 4.14 43/59] net: stmmac: dwmac-sun8i: Provide TX and RX fifo sizes Date: Mon, 29 Mar 2021 09:58:23 +0200 Message-Id: <20210329075610.300085563@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210329075608.898173317@linuxfoundation.org> References: <20210329075608.898173317@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Corentin Labbe [ Upstream commit 014dfa26ce1c647af09bf506285ef67e0e3f0a6b ] MTU cannot be changed on dwmac-sun8i. (ip link set eth0 mtu xxx returning EINVAL) This is due to tx_fifo_size being 0, since this value is used to compute valid MTU range. Like dwmac-sunxi (with commit 806fd188ce2a ("net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes")) dwmac-sun8i need to have tx and rx fifo sizes set. I have used values from datasheets. After this patch, setting a non-default MTU (like 1000) value works and network is still useable. Tested-on: sun8i-h3-orangepi-pc Tested-on: sun8i-r40-bananapi-m2-ultra Tested-on: sun50i-a64-bananapi-m64 Tested-on: sun50i-h5-nanopi-neo-plus2 Tested-on: sun50i-h6-pine-h64 Fixes: 9f93ac8d408 ("net-next: stmmac: Add dwmac-sun8i") Reported-by: Belisko Marek Signed-off-by: Corentin Labbe Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c index 149fd0d5e069..8e60315a087c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c @@ -972,6 +972,8 @@ static int sun8i_dwmac_probe(struct platform_device *pdev) plat_dat->init = sun8i_dwmac_init; plat_dat->exit = sun8i_dwmac_exit; plat_dat->setup = sun8i_dwmac_setup; + plat_dat->tx_fifo_size = 4096; + plat_dat->rx_fifo_size = 16384; ret = sun8i_dwmac_init(pdev, plat_dat->bsp_priv); if (ret)