linux-kernel - Re: [PATCH v6 2/2] ethernet: eswin: Add eic7700 ethernet driver

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Message-ID: <7c81cd46-36e5-4280-9a49-8924a7bd5f92@lunn.ch>
Date: Fri, 12 Sep 2025 22:30:27 +0200
From: Andrew Lunn <andrew@...n.ch>
To: weishangjuan@...incomputing.com
Cc: devicetree@...r.kernel.org, andrew+netdev@...n.ch, davem@...emloft.net,
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Subject: Re: [PATCH v6 2/2] ethernet: eswin: Add eic7700 ethernet driver

> +	/* Read rx-internal-delay-ps and update rx_clk delay */
> +	if (!of_property_read_u32(pdev->dev.of_node,
> +				  "rx-internal-delay-ps", &delay_ps)) {
> +		u32 val = min(delay_ps / 100, EIC7700_MAX_DELAY_UNIT);
> +
> +		eth_dly_param &= ~EIC7700_ETH_RX_ADJ_DELAY;
> +		eth_dly_param |= FIELD_PREP(EIC7700_ETH_RX_ADJ_DELAY, val);
> +	} else {
> +		dev_warn(&pdev->dev, "can't get rx-internal-delay-ps\n");
> +	}

The binding specifies the X-internal-delay-ps values are required. So
this should be dev_err_probe() and return -EINVAL to stop the probe.

	Andrew