netdev - Re: [PATCH v1 2/2] net: stmmac: eic7700: enable clocks before syscon access and correct RX sampling timing

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Message-ID: <1f553a6e-ca95-45e2-be14-96557a35e618@lunn.ch>
Date: Fri, 9 Jan 2026 19:31:09 +0100
From: Andrew Lunn <andrew@...n.ch>
To: lizhi2@...incomputing.com
Cc: devicetree@...r.kernel.org, andrew+netdev@...n.ch, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, netdev@...r.kernel.org,
	pabeni@...hat.com, mcoquelin.stm32@...il.com,
	alexandre.torgue@...s.st.com, rmk+kernel@...linux.org.uk,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	ningyu@...incomputing.com, linmin@...incomputing.com,
	pinkesh.vaghela@...fochips.com, weishangjuan@...incomputing.com
Subject: Re: [PATCH v1 2/2] net: stmmac: eic7700: enable clocks before syscon
 access and correct RX sampling timing

> +	dwc_priv->eic7700_hsp_regmap =
> +			syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
> +							"eswin,hsp-sp-csr");
> +	if (IS_ERR(dwc_priv->eic7700_hsp_regmap))
>  		return dev_err_probe(&pdev->dev,
> -				PTR_ERR(eic7700_hsp_regmap),
> +				PTR_ERR(dwc_priv->eic7700_hsp_regmap),
>  				"Failed to get hsp-sp-csr regmap\n");

In order to be backwards compatible, you cannot error out here,
because old DT blobs won't have this property.

	Andrew