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| author | Leonard Crestez <leonard.crestez@nxp.com> | 2018-11-07 14:57:03 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2018-12-18 13:01:16 +0100 |
| commit | 9e56f0df3684bd752347e7c3df5e8ed1fc55d139 (patch) | |
| tree | 003b7f8b7fd62585978928192b120ee7e401b2c7 /include | |
| parent | PCI: armada8k: Add support for gpio controlled reset signal (diff) | |
| download | linux-9e56f0df3684bd752347e7c3df5e8ed1fc55d139.tar.xz linux-9e56f0df3684bd752347e7c3df5e8ed1fc55d139.zip | |
PCI: imx: Add imx6sx suspend/resume support
Enable PCI suspend/resume support on imx6sx SOCs. This is similar to
imx7d with a few differences:
* The PM_Turn_Off bit is exposed through an IOMUX GPR, like all other
pcie control bits on 6sx.
* The pcie_inbound_axi clk needs to be turned off in suspend. On resume
it is restored via resume -> deassert_core_reset -> enable_ref_clk.
Most of the resume logic is shared with the initial reset after probe.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/syscon/imx6q-iomuxc-gpr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h b/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h index 6c1ad160ed87..c1b25f5e386d 100644 --- a/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h +++ b/include/linux/mfd/syscon/imx6q-iomuxc-gpr.h @@ -440,6 +440,7 @@ #define IMX6SX_GPR5_DISP_MUX_DCIC1_MASK (0x1 << 1) #define IMX6SX_GPR12_PCIE_TEST_POWERDOWN BIT(30) +#define IMX6SX_GPR12_PCIE_PM_TURN_OFF BIT(16) #define IMX6SX_GPR12_PCIE_RX_EQ_MASK (0x7 << 0) #define IMX6SX_GPR12_PCIE_RX_EQ_2 (0x2 << 0) |