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Message-ID: <20190121170442.GH8620@lunn.ch> Date: Mon, 21 Jan 2019 18:04:42 +0100 From: Andrew Lunn <andrew@...n.ch> To: gerg@...nel.org Cc: sean.wang@...iatek.com, bjorn@...k.no, vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com, netdev@...r.kernel.org, rene@...rst.com, john@...ozen.org, neil@...wn.name Subject: Re: [PATCHv3 2/3] net: dsa: mt7530: support the 7530 switch on the Mediatek MT7621 SoC On Mon, Jan 21, 2019 at 05:11:39PM +1000, gerg@...nel.org wrote: > From: Greg Ungerer <gerg@...nel.org> > > The MediaTek MT7621 SoC device contains a 7530 switch, and the existing > linux kernel 7530 DSA switch driver can be used with it. > > The bulk of the changes required stem from the 7621 having different > regulator and pad setup. The existing setup of these in the 7530 > driver appears to be very specific to its implemtation in the Mediatek > 7623 SoC. (Not entirely surprising given the 7623 is a quad core ARM > based SoC, and the 7621 is a dual core, dual thread MIPS based SoC). > > Create a new devicetree type, "mediatek,mt7621", to support the 7530 > switch in the 7621 SoC. There appears to be no usable ID register to > distinguish it from a 7530 in other hardware at runtime. This is used > to carry out the appropriate configuration and setup. > > Signed-off-by: Greg Ungerer <gerg@...nel.org> Reviewed-by: Andrew Lunn <andrew@...n.ch> Andrew
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