On one of our application-specific carrier boards, a MicroCrystal RV3029 acts as an off-module battery-backed RTC for the RK3399-Q7. The RV3029 is intended both to provide RTC services (to Linux) and to store the bootcount in its battery-backed SRAM section.
To support this use-case, this series adds the following: * replaces the existing RV3029 driver by a DM-based one (note that the existing driver appears unused and didn't even have a Kconfig entry) that closely mirrors its incarnation in Linux 4.17 * adds a bootcount-method interfacing back into DM devices (implementing support for the RTC uclass as of now). Philipp Tomsich (3): rtc: rv3029: add to Kconfig rtc: rv3029: update to support DM and sync with Linux 4.17 bootcount: add DM-based backing store for bootcount doc/device-tree-bindings/chosen.txt | 27 ++ drivers/bootcount/Kconfig | 12 + drivers/bootcount/Makefile | 1 + drivers/bootcount/bootcount_dm.c | 93 ++++++ drivers/rtc/Kconfig | 10 + drivers/rtc/rv3029.c | 579 +++++++++++++++++++++++++++--------- scripts/config_whitelist.txt | 1 - 7 files changed, 585 insertions(+), 138 deletions(-) create mode 100644 drivers/bootcount/bootcount_dm.c -- 2.1.4 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
