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net: macb: Perform zynqmp dynamic configuration only for SGMII interface

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[ Upstream commit c9011b028e ]

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: 32cee78181 ("net: macb: Add zynqmp SGMII dynamic configuration support")
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reported-by: Michal Simek <michal.simek@amd.com>
Tested-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1675340779-27499-1-git-send-email-radhey.shyam.pandey@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Radhey Shyam Pandey 2023-02-02 17:56:19 +05:30 committed by Greg Kroah-Hartman
parent d974330c1d
commit 9c6a896b8d
1 changed files with 16 additions and 15 deletions
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31
drivers/net/ethernet/cadence/macb_main.c
View File

@ -4614,25 +4614,26 @@ 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 = 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 = 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 */