[Arista] Add dynamic port breakout hwsku to platforms (#7975)

Co-authored-by: Zhi Yuan (Carl) Zhao <zyzhao@arista.com> Why I did it To support dynamic port breakout Broadcom configurations on Arista platforms. How I did it Updated platform.json for platforms and added new hwsku, Broadcom config, and hwsku.json for dynamic port breakout usage. The name of the new hwsku name used is very similar to the platform name (platform x86_64-arista_7050_qx32s hwsku Arista-7050QX-32S) as the flex hwsku is meant to be the default in the future. How to verify it Boot up device with the new hwsku, interfaces are up. Change hwsku.json with new default breakout mode and reload device, breakout will have successfully been applied.
sonic-net · Aug 16, 2021 · 144851f · 144851f
1 parent 8a2ba14
commit 144851f
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diff --git a/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/hwsku-init b/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/hwsku-init
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+echo 1 > /sys/devices/pci0000:00/0000:00:02.2/0000:02:00.0/mux
diff --git a/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/hwsku.json b/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/hwsku.json
@@ -0,0 +1,100 @@
+{
+    "interfaces": {
+        "Ethernet0": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet4": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet8": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet12": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet16": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet20": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet24": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet28": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet32": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet36": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet40": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet44": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet48": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet52": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet56": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet60": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet64": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet68": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet72": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet76": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet80": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet84": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet88": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet92": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet96": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet100": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet104": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet108": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet112": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet116": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet120": {
+            "default_brkout_mode": "1x40G[10G]"
+        },
+        "Ethernet124": {
+            "default_brkout_mode": "1x40G[10G]"
+        }
+    }
+}
diff --git a/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/port_config.ini b/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/port_config.ini
@@ -0,0 +1,33 @@
+# name          lanes             alias         index   speed
+Ethernet0       9,10,11,12        Ethernet5/1   5       40000
+Ethernet4       13,14,15,16       Ethernet6/1   6       40000
+Ethernet8       17,18,19,20       Ethernet7/1   7       40000
+Ethernet12      21,22,23,24       Ethernet8/1   8       40000
+Ethernet16      29,30,31,32       Ethernet9/1   9       40000
+Ethernet20      25,26,27,28       Ethernet10/1  10      40000
+Ethernet24      33,34,35,36       Ethernet11/1  11      40000
+Ethernet28      37,38,39,40       Ethernet12/1  12      40000
+Ethernet32      45,46,47,48       Ethernet13/1  13      40000
+Ethernet36      41,42,43,44       Ethernet14/1  14      40000
+Ethernet40      49,50,51,52       Ethernet15/1  15      40000
+Ethernet44      53,54,55,56       Ethernet16/1  16      40000
+Ethernet48      69,70,71,72       Ethernet17/1  17      40000
+Ethernet52      65,66,67,68       Ethernet18/1  18      40000
+Ethernet56      73,74,75,76       Ethernet19/1  19      40000
+Ethernet60      77,78,79,80       Ethernet20/1  20      40000
+Ethernet64      93,94,95,96       Ethernet21/1  21      40000
+Ethernet68      89,90,91,92       Ethernet22/1  22      40000
+Ethernet72      97,98,99,100      Ethernet23/1  23      40000
+Ethernet76      101,102,103,104   Ethernet24/1  24      40000
+Ethernet80      109,110,111,112   Ethernet25/1  25      40000
+Ethernet84      105,106,107,108   Ethernet26/1  26      40000
+Ethernet88      121,122,123,124   Ethernet27/1  27      40000
+Ethernet92      125,126,127,128   Ethernet28/1  28      40000
+Ethernet96      61,62,63,64       Ethernet29    29      40000
+Ethernet100     57,58,59,60       Ethernet30    30      40000
+Ethernet104     81,82,83,84       Ethernet31    31      40000
+Ethernet108     85,86,87,88       Ethernet32    32      40000
+Ethernet112     117,118,119,120   Ethernet33    33      40000
+Ethernet116     113,114,115,116   Ethernet34    34      40000
+Ethernet120     1,2,3,4           Ethernet35    35      40000
+Ethernet124     5,6,7,8           Ethernet36    36      40000
diff --git a/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/sai.profile b/device/arista/x86_64-arista_7050_qx32s/Arista-7050QX-32S/sai.profile
@@ -0,0 +1,2 @@
+SAI_INIT_CONFIG_FILE=/usr/share/sonic/platform/td2-a7050qx-32s-flex.config.bcm
+SAI_NUM_ECMP_MEMBERS=64