diff options
| author | Peng Fan <peng.fan@nxp.com> | 2025-04-08 16:44:27 +0800 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2025-04-14 10:17:39 +0100 |
| commit | 34180863e000f325e5d11a2fd4af300a0ae50f71 (patch) | |
| tree | 9463ed2305d940caf4ffbbc2c1e6966e5b378cf7 /include/linux | |
| parent | 73b7a51b74450be62f90b3045ff85d28a0e8877e (diff) | |
firmware: arm_scmi: imx: Add i.MX95 LMM protocol
Add Logical Machine Management(LMM) protocol which is intended for boot,
shutdown, and reset of other logical machines (LM). It is usually used to
allow one LM to manager another used as an offload or accelerator engine.
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20250408-imx-lmm-cpu-v4-3-4c5f4a456e49@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/scmi_imx_protocol.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/linux/scmi_imx_protocol.h b/include/linux/scmi_imx_protocol.h index 53b356a26414..2a96fc29cb6f 100644 --- a/include/linux/scmi_imx_protocol.h +++ b/include/linux/scmi_imx_protocol.h @@ -11,8 +11,10 @@ #include <linux/bitfield.h> #include <linux/device.h> #include <linux/notifier.h> +#include <linux/scmi_protocol.h> #include <linux/types.h> +#define SCMI_PROTOCOL_IMX_LMM 0x80 #define SCMI_PROTOCOL_IMX_BBM 0x81 #define SCMI_PROTOCOL_IMX_MISC 0x84 @@ -57,4 +59,34 @@ struct scmi_imx_misc_proto_ops { int (*misc_ctrl_req_notify)(const struct scmi_protocol_handle *ph, u32 ctrl_id, u32 evt_id, u32 flags); }; + +/* See LMM_ATTRIBUTES in imx95.rst */ +#define LMM_ID_DISCOVER 0xFFFFFFFFU +#define LMM_MAX_NAME 16 + +enum scmi_imx_lmm_state { + LMM_STATE_LM_OFF, + LMM_STATE_LM_ON, + LMM_STATE_LM_SUSPEND, + LMM_STATE_LM_POWERED, +}; + +struct scmi_imx_lmm_info { + u32 lmid; + enum scmi_imx_lmm_state state; + u32 errstatus; + u8 name[LMM_MAX_NAME]; +}; + +struct scmi_imx_lmm_proto_ops { + int (*lmm_power_boot)(const struct scmi_protocol_handle *ph, u32 lmid, + bool boot); + int (*lmm_info)(const struct scmi_protocol_handle *ph, u32 lmid, + struct scmi_imx_lmm_info *info); + int (*lmm_reset_vector_set)(const struct scmi_protocol_handle *ph, + u32 lmid, u32 cpuid, u32 flags, u64 vector); + int (*lmm_shutdown)(const struct scmi_protocol_handle *ph, u32 lmid, + u32 flags); +}; + #endif |