[PATCH v4 0/2] i2c: stm32f7: add SMBus-Alert support

Alain Volmat
2021-05-05T13:17:41Z

This serie adds support for SMBus Alert on the STM32F7.
A new binding smbus-alert is added in order to differenciate
with the existing smbus binding.

SMBus-Alert is an optional SMBus feature and SMBA alert control
and status logic must be enabled along with SMBALERT# pin
configured via pinctrl in the device tree. This is the
rational for adding "smbus-alert" property.

---
v4:
add a new generic smbus-alert property instead of st,smbus-alert
update driver to use smbus-alert instead of st,smbus-alert

v3:
use lore.kernel.org links instead of marc.info

v2:
When SMBUS alert isn't available on the board (SMBA unused), this
logic musn't be enabled. Enabling it unconditionally wrongly lead to get
SMBA interrupts.
So, add "st,smbus-alert" dedicated binding to have a smbus alert with a
consistent pin configuration in DT.

Alain Volmat (2):
i2c: add binding to mark a bus as supporting SMBus-Alert
i2c: stm32f7: add SMBus-Alert support

Documentation/devicetree/bindings/i2c/i2c.txt | 7 ++-
drivers/i2c/busses/i2c-stm32f7.c | 73 +++++++++++++++++++++++++++
2 files changed, 78 insertions(+), 2 deletions(-)

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2.7.4