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[2003:e4:1f14:7f00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id ll9-20020a170907190900b00a26f1f36708sm804631ejc.78.2024.02.02.03.53.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Feb 2024 03:53:47 -0800 (PST) From: Thierry Reding Date: Fri, 02 Feb 2024 12:53:35 +0100 Subject: [PATCH net-next v2 3/3] net: stmmac: Configure AXI on Tegra234 MGBE MIME-Version: 1.0 Message-Id: <20240202-stmmac-axi-config-v2-3-64eab2bab17b@nvidia.com> References: <20240202-stmmac-axi-config-v2-0-64eab2bab17b@nvidia.com> In-Reply-To: <20240202-stmmac-axi-config-v2-0-64eab2bab17b@nvidia.com> To: Alexandre Torgue , Jose Abreu , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=1341; i=treding@nvidia.com; h=from:subject:message-id; bh=NJ6QmQ9rSuyu2yILzTMeD+XilmAw5wEYJDPvDZo2/VA=; b=owEBbQKS/ZANAwAIAd0jrNd/PrOhAcsmYgBlvNfF/cyXbjX6A8uf1KQJ9kvcSPEduJhDj4LrA fOD8DMzv7CJAjMEAAEIAB0WIQSI6sMIAUnM98CNyJ/dI6zXfz6zoQUCZbzXxQAKCRDdI6zXfz6z ofsQD/sHVqjo63aewWEpeBEYYBpoufs8O0jXYlUjVdfx3sWoSAD4EyEQibNxxEgQdDDh01kQUdn mAdnVTIaQtKuVyq1R0RAs1A/uY6hY2QhViuUT2/HfOysFV33fuSz71I802I9DZab9OCfRff/8Bx jCxmXr5nLHjNmVKRNgApgif4lxhav5TabbhWUTPm4L6/y8Vtzotm6yGxk81+2DucSmP0cSk7ahS VMLQIfPHN7tdmYkTs50s8n403jdDWj4YmD6dISZg9W/KQ8M6eCPpb8zGrYweL2tLYnDRwSYPfJF 2CAYW3fg6hfNlBHvf3Fl1SxN5kaO0vXkWi7oYh6nohxWr1ZuWdhdJrVc3kz4MbO8vwB+EpTKWoQ einP7RipurGn/kM90sfm0I/n/B/StFGuykby1NcOeIftcoSWTSpL8nemCX3gt7myZpEVY3GHzin OvTzDoRN6LJr32Mn+gjDHYJyytzGGHJMCByXJScdmMQFt7CF3olFd4eqNoIdu9kBX00FLYWJDlr NNvP+sLeuS5My0svv+LeCu+uo28G3kG5Kkxt+X8uBD/rgzCiAWOuIWFcT4TZrJlwjFcYsiFdSlM IEM0dwocJb5Bnul9Pr0IrwbUvTbsRgiFqHJHhHS1aRaf0mHNFOWi3V+NvOXktUZa/7lrjU/EMQT GeJ1umG6jQE0PiQ== X-Developer-Key: i=treding@nvidia.com; a=openpgp; fpr=88EAC3080149CCF7C08DC89FDD23ACD77F3EB3A1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240202_035351_152875_B3A4AA5A X-CRM114-Status: GOOD ( 13.07 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Thierry Reding Allow the device to use bursts and increase the maximum number of outstanding requests to improve performance. Measurements show an increase in throughput of around 5x on a 1 Gbps link. Signed-off-by: Thierry Reding --- drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c index bab57d1675df..b6bfa48f279d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c @@ -199,6 +199,12 @@ static void mgbe_uphy_lane_bringup_serdes_down(struct net_device *ndev, void *mg writel(value, mgbe->xpcs + XPCS_WRAP_UPHY_RX_CONTROL); } +static const struct stmmac_axi tegra234_mgbe_axi = { + .axi_wr_osr_lmt = 63, + .axi_rd_osr_lmt = 63, + .axi_blen = { 256, }, +}; + static int tegra_mgbe_probe(struct platform_device *pdev) { struct plat_stmmacenet_data *plat; @@ -284,6 +290,9 @@ static int tegra_mgbe_probe(struct platform_device *pdev) if (err < 0) goto disable_clks; + /* setup default AXI configuration */ + res.axi = &tegra234_mgbe_axi; + plat = devm_stmmac_probe_config_dt(pdev, &res); if (IS_ERR(plat)) { err = PTR_ERR(plat);