i2c: bcm2835: Set clock-stretch timeout to 35ms #3068
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The BCM2835 I2C blocks have a register to set the clock-stretch timeout - how long the device is allowed to hold SCL low - in bus cycles. The current driver doesn't write to the register, therefore the default value of 64 cycles is being used for all devices. Set the timeout to the value recommended for SMBus - 35ms. See: raspberrypi#3064 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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The BCM2835 I2C blocks have a register to set the clock-stretch
timeout - how long the device is allowed to hold SCL low - in bus
cycles. The current driver doesn't write to the register, therefore
the default value of 64 cycles is being used for all devices.
Set the timeout to the value recommended for SMBus - 35ms.
See: #3064
Signed-off-by: Phil Elwell phil@raspberrypi.org