Hi Alexandre, On Tue, Jan 21, 2025 at 02:31:55PM +0000, Peng Fan wrote: >Hi Alexandre > >> Subject: Re: [PATCH 0/4] rtc/scmi: Support multiple RTCs >> >> Hello, >> >> On 20/01/2025 10:25:32+0800, Peng Fan (OSS) wrote: >> > 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 >> > >> >> I'm sorry but no, you have to register two RTCs like any other system >> would do. > >It is the i.MX SCMI Protocol exports two RTCs using one protocol. > >Two RTC devices are created, but share one parent device. > >Do you mean each RTC device should have a unique parent device? Could you please share your ideas on this? Thanks, Peng > >Thanks, >Peng. > > > > >> >> > Signed-off-by: Peng Fan <peng.fan@xxxxxxx> >> > --- >> > 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@xxxxxxx> >> > >> >> -- >> Alexandre Belloni, co-owner and COO, Bootlin >> Embedded Linux and Kernel engineering >> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2F >> bootlin.com%2F&data=05%7C02%7Cpeng.fan%40nxp.com%7C7b5c28 >> 0a03ee47dea25f08dd393c2e53%7C686ea1d3bc2b4c6fa92cd99c5c30 >> 1635%7C0%7C0%7C638729652821885462%7CUnknown%7CTWFpbG >> Zsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXa >> W4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata >> =xL23vC4m%2BtiTN8eNs8QptUHgfo%2FuHEUcEewGMdeYWYo%3D&r >> eserved=0
