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Date: Mon, 7 Feb 2022 13:17:49 +0200 From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> To: Yicong Yang <yangyicong@...ilicon.com> Cc: jarkko.nikula@...ux.intel.com, mika.westerberg@...ux.intel.com, wsa@...nel.org, linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org, prime.zeng@...ilicon.com, linuxarm@...wei.com Subject: Re: [PATCH 1/2] i2c: hisi: Add generic GPIO bus recovery support On Tue, Jan 25, 2022 at 08:49:29PM +0800, Yicong Yang wrote: > Add generic GPIO bus recovery support for i2c-hisi driver > by registering the recovery information with core provided > i2c_generic_scl_recovery() method. > > As the SCL/SDA pins are multiplexed with GPIO, we need to > switch the pins mux to GPIO before recovery and switch back > after recovery. It's implemented by the ACPI method in > the i2c_bus_recovery_info->{prepare,unprepare}_recovery() > method. NAK. ACPI has its own resources for that. What is missed is the layer between ACPI and pin control. -- With Best Regards, Andy Shevchenko
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