Hi,
On Tue, Oct 31, 2017 at 08:31:28PM +0100, Andrew Lunn wrote:
> The fix 5987feb38aa5 ("net: phy: marvell: logical vs bitwise OR typo")
> uncovered another bug in the Marvell PHY driver, which broke the
> Marvell OpenRD platform. It relies on the bootloader configuring the
> RGMII delays and does not specify a phy-mode in its device tree. The
> PHY driver should only configure RGMII delays if the phy mode
> indicates it is using RGMII. Without anything in device tree, the
> mv643xx Ethernet driver defaults to GMII.
>
> Fixes: 5987feb38aa5 ("net: phy: marvell: logical vs bitwise OR typo")
> Signed-off-by: Andrew Lunn <and...@lunn.ch>
Tested-by: Aaro Koskinen <aaro.koski...@iki.fi>
> Aaro
>
> Please can you test this and see if it fixes your OpenRD. This should
> cause it to leave the bootloader configuration alone. That will fix
> the regression for older DT blobs. Adding correct phy-mode properties
> can also be done. That would increase the robustness to bootloader
> changes.
Thanks, and yes, I guess also the DT should be updated...
A.
> drivers/net/phy/marvell.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
> index 15cbcdba618a..4d02b27df044 100644
> --- a/drivers/net/phy/marvell.c
> +++ b/drivers/net/phy/marvell.c
> @@ -681,9 +681,11 @@ static int m88e1116r_config_init(struct phy_device
> *phydev)
> if (err < 0)
> return err;
>
> - err = m88e1121_config_aneg_rgmii_delays(phydev);
> - if (err < 0)
> - return err;
> + if (phy_interface_is_rgmii(phydev)) {
> + err = m88e1121_config_aneg_rgmii_delays(phydev);
> + if (err < 0)
> + return err;
> + }
>
> err = genphy_soft_reset(phydev);
> if (err < 0)
> --
> 2.14.1
>
