On Wed, 9 Sep 2020 at 10:44, Etienne Carriere etienne.carriere@linaro.org wrote:
This change introduces a reset controller driver for SCMI agent devices. When SCMI agent and SCMI reset domain drivers are enabled, SCMI agent binds a reset controller device for each SCMI reset domain protocol devices enabled in the FDT.
SCMI reset driver is embedded upon CONFIG_RESET_SCMI=y. If enabled, CONFIG_SCMI_AGENT is also enabled.
SCMI Reset Domain protocol is defined in the SCMI specification [1].
Links: [1] https://developer.arm.com/architectures/system-architectures/software-standa... 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:
- Condition DM_GET_DRIVER(scmi_reset_domain) to IS_ENABLED(CONFIG_RESET_SCMI) to prevent a build error (linker) when CONFIG_RESET_SCMI is disabled.
Changes in v3:
- Upgrade to rename into devm_scmi_process_msg() and scmi.h split into scmi_*.h.
- Fix message ID used in scmi_reset_request().
Changes in v2:
- Change reset request() method to at least check the reset domain exists by sending a SCMI RESET_DOMAIN_ATTRIBUTE message.
- Add inline description for the several structures.
- Patch v1 R-b tag not applied since the above changes in this v2.
BACKPORTED FROM v2020.10-rc2 to V2020.04
drivers/firmware/scmi/scmi_agent-uclass.c | 4 ++ drivers/reset/Kconfig | 8 +++ drivers/reset/Makefile | 1 + drivers/reset/reset-scmi.c | 81 +++++++++++++++++++++++ include/scmi_protocols.h | 60 +++++++++++++++++ 5 files changed, 154 insertions(+) create mode 100644 drivers/reset/reset-scmi.c
Reviewed-by: Simon Glass sjg@chromium.org