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From: Ansuel Smith <ansuelsmth@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>,
	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>,
	Russell King <linux@armlinux.org.uk>,
	netdev@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: Ansuel Smith <ansuelsmth@gmail.com>
Subject: [net-next PATCH v4 08/13] dt-bindings: net: dsa: qca8k: Document qca,sgmii-enable-pll
Date: Sun, 10 Oct 2021 13:15:51 +0200	[thread overview]
Message-ID: <20211010111556.30447-9-ansuelsmth@gmail.com> (raw)
In-Reply-To: <20211010111556.30447-1-ansuelsmth@gmail.com>

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 | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/qca8k.txt b/Documentation/devicetree/bindings/net/dsa/qca8k.txt
index aeb206556f54..05a8ddfb5483 100644
--- a/Documentation/devicetree/bindings/net/dsa/qca8k.txt
+++ b/Documentation/devicetree/bindings/net/dsa/qca8k.txt
@@ -45,6 +45,16 @@ A CPU port node has the following optional node:
                                 Mostly used in qca8327 with CPU port 0 set to
                                 sgmii.
 - qca,sgmii-txclk-falling-edge: Set the transmit clock phase to falling edge.
+- 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. If enabled with
+                          qca8327 the sgmii port won't correctly init and an err
+                          is printed.
+                          This can be required for qca8337 switch with revision 2.
+                          A warning is displayed when used with revision greater
+                          2.
+                          With CPU port set to sgmii and qca8337 it is advised
+                          to set this unless a communication problem is observed.
 
 For QCA8K the 'fixed-link' sub-node supports only the following properties:
 
-- 
2.32.0


  parent reply	other threads:[~2021-10-10 11:17 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-10 11:15 [net-next PATCH v4 00/13] Multiple improvement for qca8337 switch Ansuel Smith
2021-10-10 11:15 ` [net-next PATCH v4 01/13] net: dsa: qca8k: add mac_power_sel support Ansuel Smith
2021-10-10 19:42   ` Vladimir Oltean
2021-10-10 11:15 ` [net-next PATCH v4 02/13] net: dsa: qca8k: add support for sgmii falling edge Ansuel Smith
2021-10-10 12:05   ` Vladimir Oltean
2021-10-10 12:10     ` Ansuel Smith
2021-10-10 12:50       ` Vladimir Oltean
2021-10-10 11:15 ` [net-next PATCH v4 03/13] dt-bindings: net: dsa: qca8k: Add MAC swap and clock phase properties Ansuel Smith
2021-10-10 12:07   ` Vladimir Oltean
2021-10-10 12:11     ` Ansuel Smith
2021-10-10 11:15 ` [net-next PATCH v4 04/13] drivers: net: dsa: qca8k: add support for cpu port 6 Ansuel Smith
2021-10-10 12:42   ` Vladimir Oltean
2021-10-10 13:22     ` Ansuel Smith
2021-10-11  8:17       ` Jonathan McDowell
2021-10-10 11:15 ` [net-next PATCH v4 05/13] dt-bindings: net: dsa: qca8k: Document support for CPU " Ansuel Smith
2021-10-10 11:15 ` [net-next PATCH v4 06/13] net: dsa: qca8k: move rgmii delay detection to phylink mac_config Ansuel Smith
2021-10-10 12:47   ` Vladimir Oltean
2021-10-10 13:28     ` Ansuel Smith
2021-10-10 18:11       ` Vladimir Oltean
2021-10-10 18:18         ` Ansuel Smith
2021-10-10 15:18     ` Andrew Lunn
2021-10-10 15:53       ` Vladimir Oltean
2021-10-10 11:15 ` [net-next PATCH v4 07/13] net: dsa: qca8k: add explicit SGMII PLL enable Ansuel Smith
2021-10-10 11:15 ` Ansuel Smith [this message]
2021-10-10 11:15 ` [net-next PATCH v4 09/13] drivers: net: dsa: qca8k: add support for pws config reg Ansuel Smith
2021-10-10 11:15 ` [net-next PATCH v4 10/13] dt-bindings: net: dsa: qca8k: document open drain binding Ansuel Smith
2021-10-10 12:54   ` Vladimir Oltean
2021-10-10 11:15 ` [net-next PATCH v4 11/13] drivers: net: dsa: qca8k: add support for QCA8328 Ansuel Smith
2021-10-10 11:15 ` [net-next PATCH v4 12/13] dt-bindings: net: dsa: qca8k: document support for qca8328 Ansuel Smith
2021-10-10 11:15 ` [net-next PATCH v4 13/13] drivers: net: dsa: qca8k: set internal delay also for sgmii Ansuel Smith

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