i2c: designware: Enable fast mode plus
This patch enabled fast mode plus. The fast mode plus and fast speed share the same HCNT and LCNT register. So, the fast mode plus will only run when the HCNT and LCNT value is provided. Else, it will run at fast speed as default. Signed-off-by: NWeifeng Voon <weifeng.voon@intel.com> Signed-off-by: NJarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
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