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Per Dalén authored
Improve detection of MAX6642 by reading non existing registers (0x04, 0x06 and 0xff). Reading those registers returns the previously read value. Signed-off-by:
Per Dalen <per.dalen@appeartv.com> [guenter.roeck@ericsson.com: added second set of register reads] Signed-off-by:
Guenter Roeck <guenter.roeck@ericsson.com>
942c1a92