linux-kernel - [RFC PATCH net-next 00/22] net: dsa: MT7530, MT7531, and MT7988 improvements

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Message-Id: <20230421143648.87889-1-arinc.unal@arinc9.com>
Date:   Fri, 21 Apr 2023 17:36:26 +0300
From:   arinc9.unal@...il.com
To:     Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Daniel Golle <daniel@...rotopia.org>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Russell King <linux@...linux.org.uk>
Cc:     Richard van Schagen <richard@...terhints.com>,
        Richard van Schagen <vschagen@...com>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        erkin.bozoglu@...ont.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [RFC PATCH net-next 00/22] net: dsa: MT7530, MT7531, and MT7988 improvements

Hello!

This patch series is focused on simplifying the code, and improving the
logic of the support for MT7530, MT7531, and MT7988 SoC switches.

There's also a fix for the switch on the MT7988 SoC.

Daniel, can you test this series on the MT7531 and MT7988 SoC switch?

The only missing piece to properly support multiple ports as CPU ports is
the fixes [0] [1] [2] from Richard.

I've got questions regarding patch 13 and 19.

For patch 19:

Daniel, does the switch on the MT7988 SoC require the register to fire
interrupts properly? The code uses an inclusive check which was untouched
when the MT7988 SoC switch support was added.

For patch 13:

Do I need to protect the register from being accessed by processes while
this operation is being done? I don't see this on mt7530_setup() but it's
being done on mt7530_setup_port5().

I have very thoroughly tested the patch series with every possible
configuration on the MCM and standalone MT7530 switch. I'll let the name of
the dtb files speak for themselves.

MT7621 Unielec:

only-gmac0-mt7621-unielec-u7621-06-16m.dtb
rgmii-only-gmac0-mt7621-unielec-u7621-06-16m.dtb
only-gmac1-mt7621-unielec-u7621-06-16m.dtb
gmac0-and-gmac1-mt7621-unielec-u7621-06-16m.dtb
phy0-muxing-mt7621-unielec-u7621-06-16m.dtb
phy4-muxing-mt7621-unielec-u7621-06-16m.dtb
port5-as-user-mt7621-unielec-u7621-06-16m.dtb

tftpboot 0x80008000 mips-uzImage.bin; tftpboot 0x83000000 mips-rootfs.cpio.uboot; tftpboot 0x83f00000 $dtb; bootm 0x80008000 0x83000000 0x83f00000

MT7623 Bananapi:

only-gmac0-mt7623n-bananapi-bpi-r2.dtb
rgmii-only-gmac0-mt7623n-bananapi-bpi-r2.dtb
only-gmac1-mt7623n-bananapi-bpi-r2.dtb
gmac0-and-gmac1-mt7623n-bananapi-bpi-r2.dtb
phy0-muxing-mt7623n-bananapi-bpi-r2.dtb
phy4-muxing-mt7623n-bananapi-bpi-r2.dtb
port5-as-user-mt7623n-bananapi-bpi-r2.dtb

tftpboot 0x80008000 arm-uImage; tftpboot 0x83000000 arm-rootfs.cpio.uboot; tftpboot 0x83f00000 $dtb; bootm 0x80008000 0x83000000 0x83f00000

[0] https://lore.kernel.org/netdev/20230212213949.672443-1-richard@routerhints.com/
[1] https://lore.kernel.org/netdev/20230212215152.673221-1-richard@routerhints.com/
[2] https://lore.kernel.org/netdev/20230212214027.672501-1-richard@routerhints.com/

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