netdev - [PATCH RFC 0/3] net: phy: marvell10g: Add host speed setting by an ethernet driver

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Date:   Wed, 19 Oct 2022 17:50:49 +0900
From:   Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:     linux@...linux.org.uk, kabel@...nel.org, andrew@...n.ch,
        hkallweit1@...il.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com
Cc:     netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: [PATCH RFC 0/3] net: phy: marvell10g: Add host speed setting by an ethernet driver

R-Car S4-8 environment board requires to change the host interface
as SGMII and the host speed as 1000 Mbps because the strap pin was
other mode, but the SoC/board cannot work on that mode. Also, after
the SoC initialized the SERDES once, we cannot re-initialized it
because the initialized procedure seems all black magic...

To communicate between R-Car S4-8 (host MAC) and marvell PHY,
this patch series adds a new function of_phy_connect_with_host_param()
to set host parameters (host_interfaces and host_speed), and
rswitch driver sets the paramter. After that, the marvell10g can
check the paramters and set specific registers for it.

This patch series is based on next-20221017 and the following patches
which are not upstreamed yet:
https://lore.kernel.org/all/20221019083518.933070-1-yoshihiro.shimoda.uh@renesas.com/T/#m1c3de735de018b5cb90cb3720056ac1497112b36

I'm not sure whether this is a correct way or not. So, I marked
this patch series as RFC.

Yoshihiro Shimoda (3):
  net: mdio: Add of_phy_connect_with_host_param()
  net: phy: marvell10g: Add host interface speed configuration
  net: renesas: rswitch: Pass host parameters to phydev

 drivers/net/ethernet/renesas/rswitch.c | 13 ++++++--
 drivers/net/mdio/of_mdio.c             | 42 ++++++++++++++++++++++++++
 drivers/net/phy/marvell10g.c           | 23 ++++++++++++++
 include/linux/of_mdio.h                |  7 +++++
 include/linux/phy.h                    |  8 +++++
 5 files changed, 91 insertions(+), 2 deletions(-)

-- 
2.25.1