On 28 Nov 2018, at 0.00, Philipp Tomsich philipp.tomsich@theobroma-systems.com wrote:
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
While true in v1, drivers/rtc/rv3029.c is not modified in this patchset.
- adds a bootcount-method interfacing back into DM devices (implementing support for the RTC uclass as of now).
Changes in v2:
- changed to provide a UCLASS-based implementation, as requested by
SJG in his earlier review
- split off the RV3029 driver into a separate series
Philipp Tomsich (2): bootcount: add uclass for bootcount bootcount: add a DM RTC backing store for bootcount
Reviewed-by: Ian Ray ian.ray@ge.com
doc/device-tree-bindings/chosen.txt | 30 ++++++++++++ drivers/bootcount/Kconfig | 28 +++++++++++ drivers/bootcount/Makefile | 3 ++ drivers/bootcount/bootcount-uclass.c | 93 ++++++++++++++++++++++++++++++++++++ drivers/bootcount/rtc.c | 89 ++++++++++++++++++++++++++++++++++ include/bootcount.h | 48 +++++++++++++++++++ include/dm/uclass-id.h | 1 + 7 files changed, 292 insertions(+) create mode 100644 drivers/bootcount/bootcount-uclass.c create mode 100644 drivers/bootcount/rtc.c
-- 2.1.4