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Message-ID: <36afcb40-7e09-4a17-ad12-c27ac50120e1@loongson.cn>
Date: Fri, 26 Apr 2024 18:16:42 +0800
From: Yanteng Si <siyanteng@...ngson.cn>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: andrew@...n.ch, hkallweit1@...il.com, peppe.cavallaro@...com,
alexandre.torgue@...s.st.com, joabreu@...opsys.com, fancer.lancer@...il.com,
Jose.Abreu@...opsys.com, chenhuacai@...nel.org, guyinggang@...ngson.cn,
netdev@...r.kernel.org, chris.chenfeiyang@...il.com, siyanteng01@...il.com
Subject: Re: [PATCH net-next v12 09/15] net: stmmac: dwmac-loongson: Add
phy_interface for Loongson GMAC
Hi Russell,
在 2024/4/25 22:36, Russell King (Oracle) 写道:
>> The mac_interface of gmac is PHY_INTERFACE_MODE_RGMII_ID.
> No it isn't!
Ok, that's a typo.
>
>> + plat->phy_interface = PHY_INTERFACE_MODE_RGMII_ID;
> You don't touch mac_interface here. Please read the big comment I put
> in include/linux/stmmac.h above these fields in struct
> plat_stmmacenet_data to indicate what the difference between
> mac_interface and phy_interface are, and then correct which-ever
> of the above needs to be corrected.
Copy your big comment here:
int phy_addr;
/* MAC ----- optional PCS ----- SerDes ----- optional PHY ----- Media
* ^ ^
* mac_interface phy_interface
*
* mac_interface is the MAC-side interface, which may be the same
* as phy_interface if there is no intervening PCS. If there is a
* PCS, then mac_interface describes the interface mode between the
* MAC and PCS, and phy_interface describes the interface mode
* between the PCS and PHY.
*/
phy_interface_t mac_interface;
/* phy_interface is the PHY-side interface - the interface used by
* an attached PHY.
*/
Our hardware engineer said we don't support pcs, and if I understand
your comment correctly, our mac_interface and phy_interface should
be the same, right?
Thanks,
Yanteng
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