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SubjectRe: [PATCH v3 net-next 06/10] net: dsa: microchip: add support for phylink management
On Fri, Jul 23, 2021 at 11:01:04PM +0530, Prasanna Vengateshan wrote:
> +static void lan937x_phylink_validate(struct dsa_switch *ds, int port,
> + unsigned long *supported,
> + struct phylink_link_state *state)
> +{
> + struct ksz_device *dev = ds->priv;
> + __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
> +
> + /* Check for unsupported interfaces */
> + if (!phy_interface_mode_is_rgmii(state->interface) &&
> + state->interface != PHY_INTERFACE_MODE_RMII &&
> + state->interface != PHY_INTERFACE_MODE_MII &&
> + state->interface != PHY_INTERFACE_MODE_INTERNAL) {

According to include/linux/phylink.h, when phylink passes
state->interface == PHY_INTERFACE_MODE_NA, you are expected to return
all supported link modes.

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