netdev - Re: [PATCH] net: stmmac: add support for dwmac 5.20

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Message-ID: <4d5a599a-60e5-4141-8671-ffcbda3aca02@lunn.ch>
Date: Sun, 29 Jun 2025 20:26:42 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Jisheng Zhang <jszhang@...nel.org>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: stmmac: add support for dwmac 5.20

On Sun, Jun 29, 2025 at 05:44:25PM +0800, Jisheng Zhang wrote:
> The dwmac 5.20 IP can be found on some synaptics SoCs. Add a
> compatibility flag, and extend coverage of the dwmac-generic driver
> for the 5.20 IP.
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> ---
>  drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
> index b9218c07eb6b..cecce6ed9aa6 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
> @@ -59,6 +59,7 @@ static const struct of_device_id dwmac_generic_match[] = {
>  	{ .compatible = "snps,dwmac-3.72a"},
>  	{ .compatible = "snps,dwmac-4.00"},
>  	{ .compatible = "snps,dwmac-4.10a"},
> +	{ .compatible = "snps,dwmac-5.20"},
>  	{ .compatible = "snps,dwmac"},
>  	{ .compatible = "snps,dwxgmac-2.10"},
>  	{ .compatible = "snps,dwxgmac"},

I can see a compatible flag being added. But what about the extending
the coverage of the dwmac-generic driver part?

	Andrew