2022-04-21 10:17:56

by Michal Simek

[permalink] [raw]
Subject: Re: [PATCH 2/2] net: macb: In ZynqMP initialization make SGMII phy configuration optional



On 4/20/22 13:03, Radhey Shyam Pandey wrote:
> 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 <[email protected]>
> ---
> drivers/net/ethernet/cadence/macb_main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
> index a5140d4d3baf..6434e74c04f1 100644
> --- a/drivers/net/ethernet/cadence/macb_main.c
> +++ b/drivers/net/ethernet/cadence/macb_main.c
> @@ -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);

Reviewed-by: Michal Simek <[email protected]>

Thanks,
Michal