diff options
| author | Vijay Hiremath <vijay.p.hiremath@intel.com> | 2021-08-23 15:29:01 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-09-10 19:07:02 +0000 |
| commit | 26c236e3cbaad22c24b3ee8b976223524fa16421 (patch) | |
| tree | 5c5d1c874297d366f7b858cc995ab6fbd9d39bc3 /include/config.h | |
| parent | 316b2b4456aa78d986b675dabe547b73c59a7097 (diff) | |
| download | chrome-ec-26c236e3cbaad22c24b3ee8b976223524fa16421.tar.gz | |
ioex: it8801: Support multiple I2C addresses
To avoid the I2C address contention between multiple I2C devices
on same bus, added code to support multiple I2C addresses for
it8801 I/O expander.
BUG=none
BRANCH=none
TEST=make buildall -j
Change-Id: I6985973f9ae3ce91383d3b568a851169e6a308af
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3115426
Commit-Queue: Keith Short <keithshort@chromium.org>
Reviewed-by: Keith Short <keithshort@chromium.org>
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Reviewed-by: Eric Yilun Lin <yllin@google.com>
Reviewed-by: Li Feng <li1.feng@intel.com>
Diffstat (limited to 'include/config.h')
| -rw-r--r-- | include/config.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/config.h b/include/config.h index fdc1638d06..63dc4beb62 100644 --- a/include/config.h +++ b/include/config.h @@ -2570,7 +2570,15 @@ /* Support CCGXXF I/O expander built inside PD chip */ #undef CONFIG_IO_EXPANDER_CCGXXF -/* Support IT8801 I/O expander. */ +/* + * Support IT8801 I/O expander. + * + * I2C address IT8801_KEYBOARD_PWM_I2C_ADDR_FLAGS and I2C port + * IT8801_KEYBOARD_PWM_I2C_PORT must be defined as well. + * Note: these values are only used when accessing the keyboard and PWM + * function of the IT8801 chip. I/O expander functions are accessed using + * the ioex_config[] array. + */ #undef CONFIG_IO_EXPANDER_IT8801 /* Support Nuvoton NCT38xx I/O expander. */ |