netdev - Re: [PATCH v1 2/7] net: stmmac: platform: Add snps,dwmac-5.20 IP compatible string

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Date:   Fri, 09 Dec 2022 01:59:08 +0000
From:   Ben Dooks <ben.dooks@...ethink.co.uk>
To:     Yanhong Wang <yanhong.wang@...rfivetech.com>
Cc:     linux-riscv@...ts.infradead.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Richard Cochran <richardcochran@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Peter Geis <pgwipeout@...il.com>
Subject: Re: [PATCH v1 2/7] net: stmmac: platform: Add snps,dwmac-5.20 IP
 compatible string



On 2022-12-01 09:02, Yanhong Wang wrote:
> Add "snps,dwmac-5.20" compatible string for 5.20 version that can avoid
> to define some platform data in the glue layer.
> 
> Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
> Signed-off-by: Yanhong Wang <yanhong.wang@...rfivetech.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> index 50f6b4a14be4..cc3b701af802 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> @@ -519,7 +519,8 @@ stmmac_probe_config_dt(struct platform_device
> *pdev, u8 *mac)
>  	if (of_device_is_compatible(np, "snps,dwmac-4.00") ||
>  	    of_device_is_compatible(np, "snps,dwmac-4.10a") ||
>  	    of_device_is_compatible(np, "snps,dwmac-4.20a") ||
> -	    of_device_is_compatible(np, "snps,dwmac-5.10a")) {
> +	    of_device_is_compatible(np, "snps,dwmac-5.10a") ||
> +	    of_device_is_compatible(np, "snps,dwmac-5.20")) {
>  		plat->has_gmac4 = 1;
>  		plat->has_gmac = 0;
>  		plat->pmt = 1;

out of interest, is the version of the ip autodetectable yet?
also, we would be better off if having an if (version > 4) check if we 
use the standard snps ip block code headers