From: Ansuel Smith <ansuelsmth@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [net-next PATCH v2 11/15] dt-bindings: net: dsa: qca8k: Document qca,sgmii-enable-pll
Date: Sat, 9 Oct 2021 20:14:40 +0200 [thread overview]
Message-ID: <YWHcEFKzgjE4Ikj2@Ansuel-xps.localdomain> (raw)
In-Reply-To: <YWHN1iDSelFQTPUC@lunn.ch>
On Sat, Oct 09, 2021 at 07:13:58PM +0200, Andrew Lunn wrote:
> On Fri, Oct 08, 2021 at 02:22:21AM +0200, Ansuel Smith wrote:
> > Document qca,sgmii-enable-pll binding used in the CPU nodes to
> > enable SGMII PLL on MAC config.
> >
> > Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> > ---
> > Documentation/devicetree/bindings/net/dsa/qca8k.txt | 6 ++++++
> > 1 file changed, 6 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/net/dsa/qca8k.txt b/Documentation/devicetree/bindings/net/dsa/qca8k.txt
> > index 208ee5bc1bbb..b9cccb657373 100644
> > --- a/Documentation/devicetree/bindings/net/dsa/qca8k.txt
> > +++ b/Documentation/devicetree/bindings/net/dsa/qca8k.txt
> > @@ -50,6 +50,12 @@ A CPU port node has the following optional node:
> > managed entity. See
> > Documentation/devicetree/bindings/net/fixed-link.txt
> > for details.
> > +- qca,sgmii-enable-pll : For SGMII CPU port, explicitly enable PLL, TX and RX
> > + chain along with Signal Detection.
> > + This should NOT be enabled for qca8327.
>
> So how about -EINVAL for qca8327, and document it is not valid then.
>
I would also add a warning. With all the ported device we found pll
needed only qca8337. I will add the error but also report the reason as
we really don't know if it does exist a qca8327 device that needs pll.
In theory not but who knows.
> > + This can be required for qca8337 switch with revision 2.
>
> Maybe add a warning if enabled with revision < 2? I would not make it
> an error, because there could be devices manufactured with a mixture
> or v1 and v2 silicon. Do you have any idea how wide spread v1 is?
>
No idea about the revision and can't be recovered from the switch data
print on the chip. Will add a warning and put in the documentation that
we warn when an uncorrect revision is detected.
> > + With CPU port set to sgmii and qca8337 it is advised
> > + to set this unless a communication problem is observed.
>
> Andrew
--
Ansuel
next prev parent reply other threads:[~2021-10-09 18:14 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-08 0:22 [net-next PATCH v2 00/15] Multiple improvement for qca8337 switch Ansuel Smith
2021-10-08 0:22 ` [net PATCH v2 01/15] drivers: net: phy: at803x: fix resume for QCA8327 phy Ansuel Smith
2021-10-08 2:23 ` Jakub Kicinski
2021-10-08 8:45 ` Ansuel Smith
2021-10-08 14:21 ` Jakub Kicinski
2021-10-08 0:22 ` [net PATCH v2 02/15] drivers: net: phy: at803x: add DAC amplitude fix for 8327 phy Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 03/15] drivers: net: phy: at803x: enable prefer master for 83xx internal phy Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 04/15] drivers: net: phy: at803x: better describe debug regs Ansuel Smith
2021-10-09 15:08 ` Andrew Lunn
2021-10-08 0:22 ` [net-next PATCH v2 05/15] net: dsa: qca8k: add mac_power_sel support Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 06/15] dt-bindings: net: dsa: qca8k: document rgmii_1_8v bindings Ansuel Smith
2021-10-09 15:18 ` Andrew Lunn
2021-10-09 15:30 ` Ansuel Smith
2021-10-09 17:29 ` Andrew Lunn
2021-10-08 0:22 ` [net-next PATCH v2 07/15] net: dsa: qca8k: add support for mac6_exchange, sgmii falling edge Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 08/15] dt-bindings: net: dsa: qca8k: Add MAC swap and clock phase properties Ansuel Smith
2021-10-09 17:07 ` Andrew Lunn
2021-10-09 18:08 ` Ansuel Smith
2021-10-09 19:47 ` Andrew Lunn
2021-10-09 20:06 ` Ansuel Smith
2021-10-09 21:37 ` Andrew Lunn
2021-10-09 22:23 ` Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 09/15] net: dsa: qca8k: move rgmii delay detection to phylink mac_config Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 10/15] net: dsa: qca8k: add explicit SGMII PLL enable Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 11/15] dt-bindings: net: dsa: qca8k: Document qca,sgmii-enable-pll Ansuel Smith
2021-10-09 17:13 ` Andrew Lunn
2021-10-09 18:14 ` Ansuel Smith [this message]
2021-10-08 0:22 ` [net-next PATCH v2 12/15] drivers: net: dsa: qca8k: add support for pws config reg Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 13/15] dt-bindings: net: dsa: qca8k: document open drain binding Ansuel Smith
2021-10-09 17:20 ` Andrew Lunn
2021-10-09 23:16 ` Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 14/15] drivers: net: dsa: qca8k: add support for QCA8328 Ansuel Smith
2021-10-08 0:22 ` [net-next PATCH v2 15/15] dt-bindings: net: dsa: qca8k: document support for qca8328 Ansuel Smith
2021-10-09 17:24 ` Andrew Lunn
2021-10-09 18:17 ` Ansuel Smith
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