kevin/linux
1
Fork 0
Code
master
linux/drivers/i2c
History
Liu Peibao 8de3e97f3d i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set 
When the Tx FIFO is empty and the last command has no STOP bit
set, the master holds SCL low. If I2C_DYNAMIC_TAR_UPDATE is not
set, BIT(13) MST_ON_HOLD of IC_RAW_INTR_STAT is not enabled,
causing the __i2c_dw_disable() timeout. This is quite similar to
commit 2409205acd ("i2c: designware: fix __i2c_dw_disable() in
case master is holding SCL low"). Also check BIT(7)
MST_HOLD_TX_FIFO_EMPTY in IC_STATUS, which is available when
IC_STAT_FOR_CLK_STRETCH is set.

Fixes: 2409205acd ("i2c: designware: fix __i2c_dw_disable() in case master is holding SCL low")
Co-developed-by: Xiaowu Ding <xiaowu.ding@jaguarmicro.com>
Signed-off-by: Xiaowu Ding <xiaowu.ding@jaguarmicro.com>
Co-developed-by: Angus Chen <angus.chen@jaguarmicro.com>
Signed-off-by: Angus Chen <angus.chen@jaguarmicro.com>
Signed-off-by: Liu Peibao <loven.liu@jaguarmicro.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
2024-11-08 19:13:06 +01:00
..
algos
busses i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set 2024-11-08 19:13:06 +01:00
muxes i2c: muxes: Fix return value check in mule_i2c_mux_probe() 2024-11-05 15:17:34 +01:00
i2c-atr.c i2c: Annotate struct i2c_atr with __counted_by 2023-09-24 22:50:25 +02:00
i2c-boardinfo.c
i2c-core-acpi.c i2c: acpi: Unbind mux adapters before delete 2024-05-06 09:17:38 +02:00
i2c-core-base.c The DesignWare and the Renesas I2C drivers have received most of 2024-09-21 12:46:00 +02:00
i2c-core-of.c
i2c-core-slave.c i2c: simplify with scoped for each OF child loop 2024-09-03 12:01:52 +02:00
i2c-core-smbus.c
i2c-core.h i2c: core: Fix atomic xfer check for non-preempt config 2024-01-06 14:10:10 +01:00
i2c-dev.c [tree-wide] finally take no_llseek out 2024-09-27 08:18:43 -07:00
i2c-mux.c i2c: mux: Remove class argument from i2c_mux_add_adapter() 2024-05-13 16:13:19 +02:00
i2c-slave-eeprom.c
i2c-slave-testunit.c i2c: testunit: add SMBusAlert trigger 2024-08-26 15:15:48 +02:00
i2c-smbus.c i2c: smbus: Send alert notifications to all devices if source not found 2024-08-04 16:29:34 +02:00
i2c-stub.c i2c: stub: Don't let i2c adapters declare I2C_CLASS_SPD support if they support I2C_CLASS_HWMON 2024-01-18 21:10:41 +01:00
Kconfig i2c: Remove I2C_COMPAT config symbol and related code 2024-09-07 18:31:28 +02:00
Makefile media: i2c: add I2C Address Translator (ATR) support 2023-07-14 13:11:44 +02:00