On Wed, 9 Sep 2020 at 10:44, Etienne Carriere etienne.carriere@linaro.org wrote:
This change implements a SMCCC transport for SCMI exchanges. This implementation follows the Linux kernel as references implementation for SCMI message processing, using the SMT format for communication channel meta-data.
Use of SMCCC transport in SCMI FDT bindings are defined in the Linux kernel DT bindings since v5.8. SMCCC with SMT is implemented in OP-TEE from tag 3.9.0 [2].
Links: [2] https://github.com/OP-TEE/optee_os/commit/a58c4d706d23 Signed-off-by: Etienne Carriere etienne.carriere@linaro.org Cc: Simon Glass sjg@chromium.org Cc: Peng Fan peng.fan@nxp.com Cc: Sudeep Holla sudeep.holla@arm.com
Changes in v4:
- Update CONFIG_SCMI_FIRMWARE dependencies regarding CONFIG_ARM_SMCCC.
- Remove useless cast hence remove helper dev2agent() to get dev private.
- Fix header file inclusion ordering.
Changes in v3:
- This is a followup of the SCMI agent patches posted in https://patchwork.ozlabs.org/project/uboot/list/?series=196253 The v3 splits commits and introduces a new uclass as requested.
- This patch implements the same Arm SMCCC SCMI agent as presented in v2 but in its own source file smccc_agent.c, and based in smt.h.
drivers/firmware/scmi/Kconfig | 6 +- drivers/firmware/scmi/Makefile | 1 + drivers/firmware/scmi/smccc_agent.c | 89 +++++++++++++++++++++++++++++ 3 files changed, 93 insertions(+), 3 deletions(-) create mode 100644 drivers/firmware/scmi/smccc_agent.c
Reviewed-by: Simon Glass sjg@chromium.org