[PATCH v3 2/4] net: mvneta: add SFP TX disable handling

[Stefan Roese]

On 3/24/22 10:57, Robert Marko wrote:
> Add support for handling SFP TX disable for MVNETA in the same fashion as
> to what MVPP2 is doing in order to enable using SFP-s.
> 
> This allows using ethernet on SFP only boards.
> 
> Signed-off-by: Robert Marko <robert.marko at sartura.hr>

Reviewed-by: Stefan Roese <sr at denx.de>

Thanks,
Stefan

> ---
> Changes in v3:
> * Check whether the SFP node is enabled
> 
> Changes in v2:
> * Parse the standard SFP node for TX disable GPIO instead of using a
> custom property
> 
>   drivers/net/mvneta.c | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/net/mvneta.c b/drivers/net/mvneta.c
> index 4a4268c2b2..edd818338c 100644
> --- a/drivers/net/mvneta.c
> +++ b/drivers/net/mvneta.c
> @@ -286,6 +286,7 @@ struct mvneta_port {
>   	struct phy_device *phydev;
>   #if CONFIG_IS_ENABLED(DM_GPIO)
>   	struct gpio_desc phy_reset_gpio;
> +	struct gpio_desc sfp_tx_disable_gpio;
>   #endif
>   	struct mii_dev *bus;
>   };
> @@ -1693,6 +1694,9 @@ static int mvneta_probe(struct udevice *dev)
>   {
>   	struct eth_pdata *pdata = dev_get_plat(dev);
>   	struct mvneta_port *pp = dev_get_priv(dev);
> +#if CONFIG_IS_ENABLED(DM_GPIO)
> +	struct ofnode_phandle_args sfp_args;
> +#endif
>   	void *blob = (void *)gd->fdt_blob;
>   	int node = dev_of_offset(dev);
>   	struct mii_dev *bus;
> @@ -1767,6 +1771,11 @@ static int mvneta_probe(struct udevice *dev)
>   		return ret;
>   
>   #if CONFIG_IS_ENABLED(DM_GPIO)
> +	ret = dev_read_phandle_with_args(dev, "sfp", NULL, 0, 0, &sfp_args);
> +	if (!ret && ofnode_is_enabled(sfp_args.node))
> +		gpio_request_by_name_nodev(sfp_args.node, "tx-disable-gpio", 0,
> +					   &pp->sfp_tx_disable_gpio, GPIOD_IS_OUT);
> +
>   	gpio_request_by_name(dev, "phy-reset-gpios", 0,
>   			     &pp->phy_reset_gpio, GPIOD_IS_OUT);
>   
> @@ -1775,6 +1784,9 @@ static int mvneta_probe(struct udevice *dev)
>   		mdelay(10);
>   		dm_gpio_set_value(&pp->phy_reset_gpio, 0);
>   	}
> +
> +	if (dm_gpio_is_valid(&pp->sfp_tx_disable_gpio))
> +		dm_gpio_set_value(&pp->sfp_tx_disable_gpio, 0);
>   #endif
>   
>   	return board_network_enable(bus);

Viele Grüße,
Stefan Roese

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