linux-kernel - Re: [PATCH] net: ftgmac100: Get link speed and duplex for NC-SI

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Message-ID: <20240802154838.GG2504122@kernel.org>
Date: Fri, 2 Aug 2024 16:48:38 +0100
From: Simon Horman <horms@...nel.org>
To: Jacky Chou <jacky_chou@...eedtech.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, u.kleine-koenig@...gutronix.de,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: ftgmac100: Get link speed and duplex for NC-SI

On Fri, Aug 02, 2024 at 04:33:32PM +0800, Jacky Chou wrote:
> The ethtool of this driver uses the phy API of ethtool
> to get the link information from PHY driver.
> Because the NC-SI is forced on 100Mbps and full duplex,
> the driver connects a fixed-link phy driver for NC-SI.
> The ethtool will get the link information from the
> fixed-link phy driver.
> 
> Signed-off-by: Jacky Chou <jacky_chou@...eedtech.com>
> ---
>  drivers/net/ethernet/faraday/ftgmac100.c | 37 ++++++++++++++----------
>  1 file changed, 21 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
> index fddfd1dd5070..0c820997ef88 100644
> --- a/drivers/net/ethernet/faraday/ftgmac100.c
> +++ b/drivers/net/ethernet/faraday/ftgmac100.c
> @@ -26,6 +26,7 @@
>  #include <linux/of_net.h>
>  #include <net/ip.h>
>  #include <net/ncsi.h>
> +#include <linux/phy_fixed.h>
>  
>  #include "ftgmac100.h"
>  
> @@ -50,6 +51,15 @@
>  #define FTGMAC_100MHZ		100000000
>  #define FTGMAC_25MHZ		25000000
>  
> +/* For NC-SI to register a fixed-link phy device */
> +struct fixed_phy_status ncsi_phy_status = {
> +	.link = 1,
> +	.speed = SPEED_100,
> +	.duplex = DUPLEX_FULL,
> +	.pause = 0,
> +	.asym_pause = 0
> +};

nit: This structure is only used in this file, so it should be static

> +
>  struct ftgmac100 {
>  	/* Registers */
>  	struct resource *res;

-- 
pw-bot: cr