i.MX95 uses System Manager(sm) API to start/stop logical machine or cpu.
There are two modes:
M7 in a dedicated logical machine, use LMM API
M7 and A55 in same logical machine, use CPU API
Extend the driver to using LMM and CPU protocol to manage the M7 core:
- Detect using LMM or CPU API in probe using API scmi_imx_lmm_info().
- Compare linux LM ID(got using scmi_imx_lmm_info) and M7 LM ID(the ID
is fixed as 1 in SM firmware if M7 is in a separate LM),
if Linux LM ID is not same as M7 LM ID(linux and M7 in same LM), use
LMM protocol to start/stop. Whether using CPU or LMM protocol to
start/stop, the M7 status detection could use CPU protocol to detect
started or not. So in imx_rproc_is_running, use scmi_imx_cpu_started to
check the status of M7.
- For above case (2), Use scmi_imx_lmm_power_boot to detect whether
the M7 LM is under control of A55 LM.
- For above case , after using SCMI_IMX_LMM_POWER_ON to check
permission, scmi_imx_lmm_shutdown API should be called to shutdown
the M7 LM.
- Add a new ops imx_rproc_ops_sm.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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