diff options
| author | Georgi Vlaev <g-vlaev@ti.com> | 2023-01-31 07:12:40 -0600 |
|---|---|---|
| committer | Praneeth Bajjuri <praneeth@ti.com> | 2023-02-08 11:35:31 -0600 |
| commit | 5707dea5e402ae25f12ff92c31e5c4c64215e136 (patch) | |
| tree | 131a9ea0625de00f31c698efec6df50af06a20c6 /include | |
| parent | f7159c3fb483695e5f0257b236b88be6d28fe85f (diff) | |
firmware: ti_sci: Introduce Power Management Ops
Upstream:
https://lore.kernel.org/all/20221128140522.49474-3-g-vlaev@ti.com/
Introduce power management ops supported by the TISCI
Low Power Mode API [1]. These messages are currently
supported only on AM62x platforms.
1) TISCI_MSG_LPM_WAKE_REASON
Get which wake up source woke the SoC from Low Power Mode.
The wake up source IDs will be common for all K3 platforms.
2) TISCI_MSG_SET_IO_ISOLATION
Control the IO isolation for Low Power Mode.
[1] https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/pm/lpm.html
Signed-off-by: Georgi Vlaev <g-vlaev@ti.com>
[backport: Selected relevant hunks for ti-linux-5.10.y]
Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/soc/ti/ti_sci_protocol.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/soc/ti/ti_sci_protocol.h b/include/linux/soc/ti/ti_sci_protocol.h index 8adcb45d4b5c..f2d1d74ab8fc 100644 --- a/include/linux/soc/ti/ti_sci_protocol.h +++ b/include/linux/soc/ti/ti_sci_protocol.h @@ -195,9 +195,47 @@ struct ti_sci_clk_ops { u64 *current_freq); }; +/* TISCI LPM wake up sources */ +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_WKUP_I2C0 0x00 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_WKUP_UART0 0x10 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_MCU_GPIO0 0x20 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_WKUP_ICEMELTER0 0x30 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_WKUP_TIMER0 0x40 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_WKUP_TIMER1 0x41 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_WKUP_RTC0 0x50 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_RESET 0x60 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_USB0 0x70 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_USB1 0x71 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_MAIN_IO 0x80 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_MCU_IO 0x81 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_CAN_IO 0x82 +#define TISCI_MSG_VALUE_LPM_WAKE_SOURCE_INVALID 0xFF + +/* TISCI LPM IO isolation control values */ +#define TISCI_MSG_VALUE_IO_ENABLE 1 +#define TISCI_MSG_VALUE_IO_DISABLE 0 + +/** + * struct ti_sci_pm_ops - Low Power Mode (LPM) control operations + * @prepare_sleep: Prepare to enter low power mode + * - mode: Low power mode to enter. + * - ctx_lo: Low 32-bits of physical address for context save. + * - ctx_hi: High 32-bits of physical address for context save. + * - ctx_lo: 'true' if frequency change is desired. + * - debug_flags: JTAG control flags for debug. + * @lpm_wake_reason: Get the wake up source that woke the SoC from LPM + * - source: The wake up source that woke soc from LPM. + * - timestamp: Timestamp at which soc woke. + * @set_io_isolation: Enable or disable IO isolation + * - state: The desired state of the IO isolation. + */ struct ti_sci_pm_ops { int (*prepare_sleep)(const struct ti_sci_handle *handle, u8 mode, u32 ctx_lo, u32 ctx_hi, u32 flags); + int (*lpm_wake_reason)(const struct ti_sci_handle *handle, + u32 *source, u64 *timestamp); + int (*set_io_isolation)(const struct ti_sci_handle *handle, + u8 state); }; /** |