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Thu, 2 Feb 2023 04:26:35 -0800 Envelope-to: git@amd.com, radhey.shyam.pandey@amd.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, andrew@lunn.ch, claudiu.beznea@microchip.com, nicolas.ferre@microchip.com, pabeni@redhat.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Received: from [172.23.64.3] (port=38489 helo=xhdvnc103.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1pNYfj-0008IC-AG; Thu, 02 Feb 2023 04:26:35 -0800 Received: by xhdvnc103.xilinx.com (Postfix, from userid 13245) id 822FB1055BA; Thu, 2 Feb 2023 17:56:34 +0530 (IST) From: Radhey Shyam Pandey To: , , , , , , CC: , , , Radhey Shyam Pandey Subject: [PATCH] net: macb: Perform zynqmp dynamic configuration only for SGMII interface Date: Thu, 2 Feb 2023 17:56:19 +0530 Message-ID: <1675340779-27499-1-git-send-email-radhey.shyam.pandey@amd.com> X-Mailer: git-send-email 2.1.1 MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM3NAM02FT020:EE_|SA1PR02MB8494:EE_ X-MS-Office365-Filtering-Correlation-Id: b7554366-4873-42e9-ff2a-08db0518bae8 X-MS-Exchange-SenderADCheck: 0 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Feb 2023 12:26:37.5461 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b7554366-4873-42e9-ff2a-08db0518bae8 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: DM3NAM02FT020.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR02MB8494 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In zynqmp platforms where firmware supports dynamic SGMII configuration but has other non-SGMII ethernet devices, it fails them with no packets received at the RX interface. To fix this behaviour perform SGMII dynamic configuration only for the SGMII phy interface. Fixes: 32cee7818111 ("net: macb: Add zynqmp SGMII dynamic configuration support") Signed-off-by: Radhey Shyam Pandey --- drivers/net/ethernet/cadence/macb_main.c | 31 ++++++++++++------------ 1 file changed, 16 insertions(+), 15 deletions(-) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 72e42820713d..6cda31520c42 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -4627,25 +4627,26 @@ static int init_reset_optional(struct platform_device *pdev) if (ret) return dev_err_probe(&pdev->dev, ret, "failed to init SGMII PHY\n"); - } - ret = zynqmp_pm_is_function_supported(PM_IOCTL, IOCTL_SET_GEM_CONFIG); - if (!ret) { - u32 pm_info[2]; + ret = zynqmp_pm_is_function_supported(PM_IOCTL, IOCTL_SET_GEM_CONFIG); + if (!ret) { + u32 pm_info[2]; + + ret = of_property_read_u32_array(pdev->dev.of_node, "power-domains", + pm_info, ARRAY_SIZE(pm_info)); + if (ret) { + dev_err(&pdev->dev, "Failed to read power management information\n"); + goto err_out_phy_exit; + } + ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_FIXED, 0); + if (ret) + goto err_out_phy_exit; - ret = of_property_read_u32_array(pdev->dev.of_node, "power-domains", - pm_info, ARRAY_SIZE(pm_info)); - if (ret) { - dev_err(&pdev->dev, "Failed to read power management information\n"); - goto err_out_phy_exit; + ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_SGMII_MODE, 1); + if (ret) + goto err_out_phy_exit; } - ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_FIXED, 0); - if (ret) - goto err_out_phy_exit; - ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_SGMII_MODE, 1); - if (ret) - goto err_out_phy_exit; } /* Fully reset controller at hardware level if mapped in device tree */ -- 2.25.1