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Add kernel parameter to enable i2c-6 pinctrl mapping
By default the pinctrl platform driver for Merrifield will register a pinctrl mapping for i2c-6 that sets the correct pinmux once i2c-6 is probed. If this is not desired, the following can be added to the kernel command line: platform_mrfld_pinctrl.pinctrl_i2c6=n Since the SCU driver is probed after the I2C bus drivers (due to the order of PCI IDs), setting the pinmux for i2c-6 will fail since the SCU driver must be probed to successfully set the bufcfg. As a workaround, the I2C bus driver (i2c-designware-pci) can be compiled as a LKM and inserted after all other PCI devices have been probed.
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