[device/Accton] Fix i2c fault from ir3570a on 3 models #3245
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Disabling i2c function of ir3507a which may failed i2c tranfer to others. Signed-off-by: roy_lee <[email protected]>
…to fix_i2c_fault_from_ir3507a
Signed-off-by: roy_lee <[email protected]>
…to fix_i2c_fault_from_ir3507a
lguohan
approved these changes
Jul 31, 2019
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I2c burst read may failed due to misoperation of ir3570a(A DC-to-DC converter IC).
As #2966, there are 3 more models have this symptom, as7326-56x, as7726-32x, and as9716-32d.
Also correct typo of naming on as7816-64x and as7716-32x.
Signed-off-by: roy_lee [email protected]
Disabling i2c function of ir3570a which may failed i2c tranfer to others.
Close channel of mux after data transfered.
Identify version of ir3570, if it's ir3570a, disable its alias i2c address.
Enable parameter of driver i2c_mux_pca954x to close channel on after every access.
Write 08 to offset 0xcf of systom eeprom and execute i2c block read.
It will return error.
plug-in several transceivers and run "show interfaces transceiver presence" and "sfputil show presence". You may see the different result. (But doing this requires updated xcvrd).
As the code diff.