[PATCH 0/2] Add I2C bus recovery support on Kunpeng 920/930
From: Yicong Yang
Date: Tue Jan 25 2022 - 07:54:40 EST
This series adds the I2C bus recovery support on Kunpeng 920/930.
We're using HiSilicon I2C controller on Kunpeng 930 and Designware
I2C controller on Kunpeng 920. For both platform, the SCL/SDA pins
are multiplexed with GPIOs. Both driver use generic GPIO recovery
method and we need to switch the pin mutiplexing before/after the
recovery process. We use ACPI method to help on the pin mux switching
which is also introduced in this series.
Yicong Yang (2):
i2c: hisi: Add generic GPIO bus recovery support
i2c: designware: Add ACPI assisted recovery support
drivers/i2c/busses/i2c-designware-core.h | 2 +
drivers/i2c/busses/i2c-designware-master.c | 84 ++++++++++++++++++++-
drivers/i2c/busses/i2c-designware-platdrv.c | 6 +-
drivers/i2c/busses/i2c-hisi.c | 78 +++++++++++++++++++
4 files changed, 164 insertions(+), 6 deletions(-)
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2.24.0