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net: macb: In ZynqMP initialization make SGMII phy configuration optional

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In the macb binding documentation "phys" is an optional property. Make
implementation in line with it. This change allows the traditional flow
in which first stage bootloader does PS-GT configuration to work along
with newer use cases in which PS-GT configuration is managed by the
phy-zynqmp driver.

It fixes below macb probe failure when macb DT node doesn't have SGMII
phys handle.
"macb ff0b0000.ethernet: error -ENODEV: failed to get PS-GTR PHY"

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Radhey Shyam Pandey 2022-04-20 16:33:10 +05:30 committed by David S. Miller
parent 3ac8316e09
commit 29e96fe9e0
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/cadence/macb_main.c
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@ -4588,7 +4588,7 @@ static int zynqmp_init(struct platform_device *pdev)
if (bp->phy_interface == PHY_INTERFACE_MODE_SGMII) {
/* Ensure PS-GTR PHY device used in SGMII mode is ready */
bp->sgmii_phy = devm_phy_get(&pdev->dev, "sgmii-phy");
bp->sgmii_phy = devm_phy_optional_get(&pdev->dev, NULL);
if (IS_ERR(bp->sgmii_phy)) {
ret = PTR_ERR(bp->sgmii_phy);