Notes on external buck configuration

[DESCRIPTION]

An external buck is used to supply power for Vproc on MT6592.

[SOLUTION]

GPIO
–Configuration on DCT
•GPIO_EXT_BUCK_EN_PIN
•GPIO_EXT_BUCK_VSEL_PIN
–Example
Select the correct VarName in DCT referring to SCH:

Macro definitions will be generated in file: cust_gpio_usage.c after Gen
Code.

I2C
–I2C 1 is used by default.
•If PCB is changed to I2C 0, in
alps\mediatek\custom\[project_name]\kernel\Battery\battery\cust_pMIC.h,
add:
NCP6335_I2C_CHANNEL_CHANGED_0
fan53555_I2C_CHANNEL_CHANGED_0
•If PCB is changed to I2C 2, in
alps\mediatek\custom\[project_name]\kernel\battery\battery\cust_PMIC.h,
add:NCP6335_I2C_CHANNEL_CHANGED_2
fan53555_I2C_CHANNEL_CHANGED_2
–If there is no alps\mediatek\custom\[project_name
]\kernel\battery\battery\cust_pmic.h, please copy it fROM alps\mediatek
\custom\mt6592\kernel\battery\battery\.