Thread (36 messages) 36 messages, 9 authors, 2017-12-07

Re: [PATCH v4 1/8] dt-bindings: Add Cavium Octeon Common Ethernet Interface.

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From: Andrew Lunn <hidden>
Date: 2017-11-29 02:02:31
Also in: linux-devicetree, linux-mips, lkml

On Tue, Nov 28, 2017 at 04:55:33PM -0800, David Daney wrote:
quoted hunk ↗ jump to hunk
From: Carlos Munoz <cmunoz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>

Add bindings for Common Ethernet Interface (BGX) block.

Acked-by: Rob Herring <redacted>
Signed-off-by: Carlos Munoz <cmunoz-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Steven J. Hill <Steven.Hill-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: David Daney <david.daney-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 .../devicetree/bindings/net/cavium-bgx.txt         | 61 ++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/cavium-bgx.txt
diff --git a/Documentation/devicetree/bindings/net/cavium-bgx.txt b/Documentation/devicetree/bindings/net/cavium-bgx.txt
new file mode 100644
index 000000000000..830c5f08dddd
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/cavium-bgx.txt
@@ -0,0 +1,61 @@
+* Common Ethernet Interface (BGX) block
+
+Properties:
+
+- compatible: "cavium,octeon-7890-bgx": Compatibility with all cn7xxx SOCs.
+
+- reg: The base address of the BGX block.
+
+- #address-cells: Must be <1>.
+
+- #size-cells: Must be <0>.  BGX addresses have no size component.
+
+A BGX block has several children, each representing an Ethernet
+interface.
+
+
+* Ethernet Interface (BGX port) connects to PKI/PKO
+
+Properties:
+
+- compatible: "cavium,octeon-7890-bgx-port": Compatibility with all
+	      cn7xxx SOCs.
+
+	      "cavium,octeon-7360-xcv": Compatibility with cn73xx SOCs
+	      for RGMII.
+
+- reg: The index of the interface within the BGX block.
+
+Optional properties:
+
+- local-mac-address: Mac address for the interface.
+
+- phy-handle: phandle to the phy node connected to the interface.
+
+- phy-mode: described in ethernet.txt.
+
+- fixed-link: described in fixed-link.txt.
+
+Example:
+
+	ethernet-mac-nexus@11800e0000000 {
+		compatible = "cavium,octeon-7890-bgx";
+		reg = <0x00011800 0xe0000000 0x00000000 0x01000000>;
Hi David

In the probe function we have:

+       reg = of_get_property(pdev->dev.of_node, "reg", NULL);
+       addr = of_translate_address(pdev->dev.of_node, reg);
+       interface = (addr >> 24) & 0xf;
+       numa_node = (addr >> 36) & 0x7;

Is this documented somewhere? The numa_node is particularly
interesting. MMIO changes depends on what node this is in the cluster?

	Andrew
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