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[E1031] fix pca9548 initializes failed occasionally (#15712) (#15994)

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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.

Co-authored-by: Ikki Zhu <79439153+qnos@users.noreply.github.com>
This commit is contained in:
mssonicbld 2023-08-11 04:33:37 +08:00 committed by GitHub
parent d351e05f82
commit 642358c474
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platform/broadcom/sonic-platform-modules-cel/debian/platform-modules-haliburton.init
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@ -33,6 +33,7 @@ start)
[ $found -eq 0 ] && echo "cannot find iSMT" && exit 1 [ $found -eq 0 ] && echo "cannot find iSMT" && exit 1
i2cset -y ${devnum} 0x73 0x10 0x00 0x01 i i2cset -y ${devnum} 0x73 0x10 0x00 0x01 i
sleep 0.5
# Attach PCA9548 0x73 Channel Extender for CPU Board # Attach PCA9548 0x73 Channel Extender for CPU Board
echo pca9548 0x73 > /sys/bus/i2c/devices/i2c-${devnum}/new_device echo pca9548 0x73 > /sys/bus/i2c/devices/i2c-${devnum}/new_device