From de97458395067e6adbbf86c49828dd77f91b5829 Mon Sep 17 00:00:00 2001
From: Ikki Zhu <79439153+qnos@users.noreply.github.com>
Date: Mon, 31 Jul 2023 00:42:14 +0800
Subject: [PATCH] [E1031] fix pca9548 initializes failed occasionally (#15712)

Why I did it
[E1031] fix pca9548 initializes failed occasionally in stress test.
When failure happened, ismt i2c bus hang up and need power cycle to
recover it.

How I did it
Add 0.5s delay between setuping and configuring pca9548 i2c mux.

How to verify it
Reboot stress test at least 100 times without failure.
---
 .../debian/platform-modules-haliburton.init                      | 1 +
 1 file changed, 1 insertion(+)

diff --git a/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-haliburton.init b/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-haliburton.init
index 3f6358bf4a..aff8503d75 100644
--- a/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-haliburton.init
+++ b/platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-haliburton.init
@@ -53,6 +53,7 @@ start)
         [ $found -eq 0 ] && echo "cannot find iSMT" && exit 1
 
         i2cset -y ${devnum} 0x73 0x10 0x00 0x01 i
+        sleep 0.5
 
         # Attach PCA9548 0x73 Channel Extender for CPU Board
         echo pca9548 0x73 > /sys/bus/i2c/devices/i2c-${devnum}/new_device