[PATCH 0/4] rtc/scmi: Support multiple RTCs

Peng Fan (OSS)
2025-01-20T02:26:28Z

i.MX95 System Manager(SM) BBM protocol exports two RTCs for EVK board.
one RTC is SoC internal RTC, the other is board RTC.

The current driver only use the 1st RTC. With this patchset, both RTCs
could be used in Linux. To achieve this:

1. Support more event sources for BBM protocol
2. Add bbm_info hook to let users could query the number of RTCs
3. Introduce devm_rtc_allocate_device_priv to support setting rtc device
private information
4. Update rtc-imx-sm-bbm.c to register both RTCs

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
Peng Fan (4):
firmware: arm_scmi: imx: Support more event sources
firmware: arm_scmi: imx: Introduce bbm_info hook
rtc: Introduce devm_rtc_allocate_device_priv
rtc: imx-sm-bbm: Support multiple RTCs

drivers/firmware/arm_scmi/vendors/imx/imx-sm-bbm.c | 33 ++++++++++-
drivers/rtc/class.c | 9 ++-
drivers/rtc/dev.c | 8 ++-
drivers/rtc/interface.c | 16 ++---
drivers/rtc/proc.c | 2 +-
drivers/rtc/rtc-imx-sm-bbm.c | 69 ++++++++++++++--------
include/linux/rtc.h | 2 +
include/linux/scmi_imx_protocol.h | 2 +
8 files changed, 100 insertions(+), 41 deletions(-)
---
base-commit: e7bb221a638962d487231ac45a6699fb9bb8f9fa
change-id: 20250116-rtc-3834e01786a8

Best regards,
--
Peng Fan <peng.fan@nxp.com>