soc: imx: Add GPCv2 power gating driver

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Add code allowing for control of various power domains managed by GPCv2
IP block found in i.MX7 series of SoCs. Power domains covered by this
patch are:

    - PCIE PHY
    - MIPI PHY
    - USB HSIC PHY
    - USB OTG1/2 PHY

Support for any other power domain controlled by GPC is not present, and
can be added at some later point.

Testing of this code was done against a PCIe driver.

Cc: yurovsky@gmail.com
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Dong Aisheng <dongas86@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

...

This commit is contained in:

Andrey Smirnov 2017-03-28 08:19:45 -07:00 • committed by Shawn Guo

parent 2d9eb1dd58

commit 03aa12629f

4 changed files with 374 additions and 0 deletions

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1

drivers/soc/Kconfig

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9

drivers/soc/imx/Kconfig

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1

drivers/soc/imx/Makefile

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363

drivers/soc/imx/gpcv2.c

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