RE: [PATCH 0/5] firmware: scmi/imx: Add i.MX95 LMM/CPU Protocol

Peng Fan
2025-02-06T02:40:42Z

Hi,

> Subject: [PATCH 0/5] firmware: scmi/imx: Add i.MX95 LMM/CPU
> Protocol

I am planning to send V2 out this week if no more comments.

Thanks,
Peng.

>
> i.MX95 System Manager(SM) implements Logical Machine
> Management(LMM) and CPU protocol to manage Logical Machine(LM)
> and CPUs(eg, M7).
>
> To manage M7 in a separate LM or in same LM as Linux itself. LMM
> APIs and CPU APIs are needed.
>
> When M7 is in LM 'lm-m7', and this LM is managable by 'linux-lm',
> linux could use LMM_BOOT, LMM_SHUTDOWN and etc to manage
> 'lm-m7'.
>
> If in same LM, use CPU_START, CPU_STOP, CPU_RESET_VECTOR_SET
> and etc to manage M7.
>
> Both LMM/CPU APIs will be used by remoteproc driver. The
> remoteproc patchset will be posted out after this patchset gets
> reviewed or in good shape per Maitainer's view.
>
> Build pass with COMPILE_TEST
> Tested with remoteproc on i.MX95
>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
> Peng Fan (5):
> firmware: arm_scmi: imx: Add i.MX95 LMM protocol
> firmware: arm_scmi: imx: Add i.MX95 CPU Protocol
> firmware: arm_scmi: imx: Add LMM and CPU documentation
> firmware: imx: Add i.MX95 SCMI LMM driver
> firmware: imx: Add i.MX95 SCMI CPU driver
>
> drivers/firmware/arm_scmi/vendors/imx/Kconfig | 22 +
> drivers/firmware/arm_scmi/vendors/imx/Makefile | 2 +
> drivers/firmware/arm_scmi/vendors/imx/imx-sm-cpu.c | 283
> +++++++++ drivers/firmware/arm_scmi/vendors/imx/imx-sm-lmm.c |
> 235 +++++++
> drivers/firmware/arm_scmi/vendors/imx/imx95.rst | 692
> +++++++++++++++++++++
> drivers/firmware/imx/Kconfig | 22 +
> drivers/firmware/imx/Makefile | 2 +
> drivers/firmware/imx/sm-cpu.c | 91 +++
> drivers/firmware/imx/sm-lmm.c | 89 +++
> include/linux/firmware/imx/sm.h | 56 ++
> include/linux/scmi_imx_protocol.h | 39 ++
> 11 files changed, 1533 insertions(+)
> ---
> base-commit: 0907e7fb35756464aa34c35d6abb02998418164b
> change-id: 20250120-imx-lmm-cpu-418daaa257e2
>
> Best regards,
> --
> Peng Fan <peng.fan@nxp.com>