Re: [PATCH v4 net-next 4/6] net: ethernet: ti: am65-cpsw: Add suspend/resume support

[Paolo Abeni]

On Tue, 2022-11-29 at 15:34 +0200, Roger Quadros wrote:
> @@ -555,11 +556,26 @@ static int am65_cpsw_nuss_ndo_slave_open(struct net_device *ndev)
>  	struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
>  	struct am65_cpsw_port *port = am65_ndev_to_port(ndev);
>  	int ret, i;
> +	u32 reg;
>  
>  	ret = pm_runtime_resume_and_get(common->dev);
>  	if (ret < 0)
>  		return ret;
>  
> +	/* Idle MAC port */
> +	cpsw_sl_ctl_set(port->slave.mac_sl, CPSW_SL_CTL_CMD_IDLE);
> +	cpsw_sl_wait_for_idle(port->slave.mac_sl, 100);
> +	cpsw_sl_ctl_reset(port->slave.mac_sl);
> +
> +	/* soft reset MAC */
> +	cpsw_sl_reg_write(port->slave.mac_sl, CPSW_SL_SOFT_RESET, 1);
> +	mdelay(1);
> +	reg = cpsw_sl_reg_read(port->slave.mac_sl, CPSW_SL_SOFT_RESET);
> +	if (reg) {
> +		dev_err(common->dev, "soft RESET didn't complete\n");

I *think* Andrew was asking for dev_dbg() here, but let's see what he
has to say :)

Cheers,

Paolo