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[AS9716-32D] Support i2c mux reset#10492

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lguohan merged 1 commit intosonic-net:masterfrom
brandonchuang:as9716_32d_ioport
Apr 9, 2022
Merged

[AS9716-32D] Support i2c mux reset#10492
lguohan merged 1 commit intosonic-net:masterfrom
brandonchuang:as9716_32d_ioport

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Signed-off-by: Brandon Chuang [email protected]

Why I did it

Prevent from i2c bus to get locked.

How I did it

Add sysfs driver to access ioport.
Command to reset i2c mux:
echo 1 > /sys/devices/platform/as9716_32d_ioport/i2c_mux_rst
Command to bring i2c mux out of reset:
echo 0 > /sys/devices/platform/as9716_32d_ioport/i2c_mux_rst

How to verify it

If i2c mux is under reset state, below command will return error.
i2cget -f -y 0 0x77 0

Which release branch to backport (provide reason below if selected)

  • 201811
  • 201911
  • 202006
  • 202012
  • 202106
  • 202111
    --> Please merge code to this branch. Some customers need it

Why I did it
    Prevent from i2c bus to get locked.

How I did it
    Add sysfs driver to access ioport.
    Command to reset i2c mux:
    echo 1 > /sys/devices/platform/as9716_32d_ioport/i2c_mux_rst
    Command to bring i2c mux out of reset:
    echo 0 > /sys/devices/platform/as9716_32d_ioport/i2c_mux_rst

Signed-off-by: Brandon Chuang <[email protected]>
@lguohan lguohan merged commit 2116f62 into sonic-net:master Apr 9, 2022
liushilongbuaa pushed a commit to liushilongbuaa/sonic-buildimage that referenced this pull request Jun 20, 2022
Related work items: #49, #58, #107, sonic-net#247, sonic-net#249, sonic-net#277, sonic-net#593, sonic-net#597, sonic-net#1035, sonic-net#2130, sonic-net#2150, sonic-net#2165, sonic-net#2169, sonic-net#2178, sonic-net#2179, sonic-net#2187, sonic-net#2188, sonic-net#2191, sonic-net#2195, sonic-net#2197, sonic-net#2198, sonic-net#2200, sonic-net#2202, sonic-net#2206, sonic-net#2209, sonic-net#2211, sonic-net#2216, sonic-net#7909, sonic-net#8927, sonic-net#9681, sonic-net#9733, sonic-net#9746, sonic-net#9850, sonic-net#9967, sonic-net#10104, sonic-net#10152, sonic-net#10168, sonic-net#10228, sonic-net#10266, sonic-net#10288, sonic-net#10294, sonic-net#10313, sonic-net#10394, sonic-net#10403, sonic-net#10404, sonic-net#10421, sonic-net#10431, sonic-net#10437, sonic-net#10445, sonic-net#10457, sonic-net#10458, sonic-net#10465, sonic-net#10467, sonic-net#10469, sonic-net#10470, sonic-net#10474, sonic-net#10477, sonic-net#10478, sonic-net#10482, sonic-net#10485, sonic-net#10488, sonic-net#10489, sonic-net#10492, sonic-net#10494, sonic-net#10498, sonic-net#10501, sonic-net#10509, sonic-net#10512, sonic-net#10514, sonic-net#10516, sonic-net#10517, sonic-net#10523, sonic-net#10525, sonic-net#10531, sonic-net#10532, sonic-net#10538, sonic-net#10555, sonic-net#10557, sonic-net#10559, sonic-net#10561, sonic-net#10565, sonic-net#10572, sonic-net#10574, sonic-net#10576, sonic-net#10578, sonic-net#10581, sonic-net#10585, sonic-net#10587, sonic-net#10599, sonic-net#10607, sonic-net#10611, sonic-net#10616, sonic-net#10618, sonic-net#10619, sonic-net#10623, sonic-net#10624, sonic-net#10633, sonic-net#10646, sonic-net#10655, sonic-net#10660, sonic-net#10664, sonic-net#10680, sonic-net#10683
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3 participants