[GIT PULL] Renesas ARM Based SoC da9063/da9210 Regulator Quirk for v4.1

Arnd Bergmann arnd at arndb.de
Mon Mar 16 07:39:03 PDT 2015

On Monday 16 March 2015 08:03:07 Simon Horman wrote:
> Renesas ARM Based SoC da9063/da9210 Regulator Quirk for v4.1
> The r8a7790/lager and r8a7791/koelsch development boards have da9063 and
> da9210 regulators.  Both regulators have their interrupt request lines
> tied to the same interrupt pin (IRQ2) on the SoC.
> After cold boot or da9063-induced restart, both the da9063 and da9210
> seem to assert their interrupt request lines.  Hence as soon as one
> driver requests this irq, it gets stuck in an interrupt storm, as it
> only manages to deassert its own interrupt request line, and the other
> driver hasn't installed an interrupt handler yet.
> To handle this, install a quirk that masks the interrupts in both the
> da9063 and da9210.  This quirk has to run after the i2c master driver
> has been initialized, but before the i2c slave drivers are initialized.
> As it depends on i2c, select I2C if one of the affected platforms is
> enabled in the kernel config.

Pulled into next/soc, thanks!


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