From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [GIT PULL] Renesas ARM Based SoC da9063/da9210 Regulator Quirk for v4.1
Date: Mon, 16 Mar 2015 15:39:03 +0100 [thread overview]
Message-ID: <7585731.d24O9krsnY@wuerfel> (raw)
In-Reply-To: <cover.1426456462.git.horms+renesas@verge.net.au>
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!
Arnd
prev parent reply other threads:[~2015-03-16 14:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-15 23:03 [GIT PULL] Renesas ARM Based SoC da9063/da9210 Regulator Quirk for v4.1 Simon Horman
2015-03-15 23:03 ` [PATCH 1/5] ARM: shmobile: R-Car Gen2: Add da9063/da9210 regulator quirk Simon Horman
2015-03-15 23:03 ` [PATCH 2/5] ARM: shmobile: koelsch dts: Add da9210 regulator interrupt Simon Horman
2015-03-15 23:03 ` [PATCH 3/5] ARM: shmobile: koelsch: Add da9063 PMIC device node for system restart Simon Horman
2015-03-15 23:03 ` [PATCH 4/5] ARM: shmobile: lager dts: Add da9210 regulator interrupt Simon Horman
2015-03-15 23:03 ` [PATCH 5/5] ARM: shmobile: lager: Add da9063 PMIC device node for system restart Simon Horman
2015-03-16 14:39 ` Arnd Bergmann [this message]
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