Arnd Bergmann ffe971ef40 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVBgAuAAoJENfPZGlqN0++Ks0P/04y8/pbeyOIz3jnPXvXKjE0 ouZc+wcoIlJzV2uTpHnfNsHeepKG7HBHF3GH6DLn6Au21W68JwJ3fbV7Lo0xCI2P gmphYThMfRLLxy0wx/tJhG99KDannzHxEIVpTjS7IYWCJMB/WX0s2pjxf5GlFlDu sfp1AdFlw0QuOa55lUk7nluyrw6OfJoAKUZVVeK8q8gZXRju2ecnv0yeS511d38k vrRhYip2Gone69GFIusdhDozng51YdbnAle4Z2ZLpzrkIFp+yONYvLnDlRXtxJqH UAL6cjX4O2WewO5bgnF6dnVnwm2wfXb3WcsfWQVmpQ7ujk0GsehwGvECFODh/ikm IViNijKOMhFJhJlR56bED/a1fDSWZs8eQf1q1lsUYCJDvsZ1bf15aaj5lVI2nZ+n v0/p4ZbzR2dNhPNEveKKMcLO+LNHmOAH9QgvrLLHrs7osfYimht+Rd7z1mRoNnl4 nyg/SqdPVuEu52uA1EXuDPdwJm9oGU/QNaazaR3GROPvVbgodYhnni7ors5nOFyI XRgcnW06yWUoAn5BNW67p0/mg2F1YELmp652CnWj80s7O53vc0c5vF0vmgy6fSb3 mlUqDDtUvyLROdjgW0elWph6nRIE5nFBZEylQf3PVedvKa5VxrJ6Epd03cgLw1GQ qPeQl8tUW2z48BSTMGNb =EXNz -----END PGP SIGNATURE----- Merge tag 'renesas-da9063-da9210-quirk-for-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc Merge "Renesas ARM Based SoC da9063/da9210 Regulator Quirk for v4.1" from Simon Horman: 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. * tag 'renesas-da9063-da9210-quirk-for-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: ARM: shmobile: lager: Add da9063 PMIC device node for system restart ARM: shmobile: lager dts: Add da9210 regulator interrupt ARM: shmobile: koelsch: Add da9063 PMIC device node for system restart ARM: shmobile: koelsch dts: Add da9210 regulator interrupt ARM: shmobile: R-Car Gen2: Add da9063/da9210 regulator quirk		2015-03-16 15:36:44 +01:00
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compressed	Merge branches 'debug', 'fixes', 'l2c' (early part), 'misc' and 'sa1100' into for-next	2015-02-10 10:26:27 +00:00
dts	Renesas ARM Based SoC da9063/da9210 Regulator Quirk for v4.1	2015-03-16 15:36:44 +01:00
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