[PATCH v3 0/4] Add support for Rockchip RK808 PMIC RTC device

sunil at amarulasolutions.com sunil at amarulasolutions.com
Tue Apr 28 18:14:23 CEST 2020

From: Suniel Mahesh <sunil at amarulasolutions.com>

This patch series adds support for Rockchip RK808 PMIC RTC device.

Patch #1, adds a child node under RK808 PMIC node. Patch #2 binds
this child device with its parent RK808 PMIC. Patch #3 adds the rtc
driver. Patch #4 enables DM RTC, adds date command for the target.

The RK808 PMIC RTC has a hardware bug. It counts 31 days for november
month and the weeks register counts 0 - 7.

This driver does a temporary fix, where as in if date is Nov 31, then it resets
the date to Dec 1(this happens only if date cmd is queried from u-boot command line/script).
Similarly for the weeks register, 0(sun) - 6(sat). If 7 is encountered then it is reset to zero.

u-boot generally loads linux/other binary. Linux has a full fledged
driver implemented along with a workaround.
Changes for v3:
- forgot to add reviewed by tag for first two patches, added the tag.

Changes for v2:
- changed the description of the patch
- earlier it was a three patch series. code which was enabling RTC DM and date command
  is split into a seperate patch as suggested by kever yang. patch#3 is split into patch#4.
Suniel Mahesh (4):
  arm: dts: rockchip: rk3399-roc-pc: Add RTC child node for RK808 PMIC
  power: pmic: rk8xx: bind rk808 RTC
  rtc: rk8xx: Add base support for the RK808 PMIC RTC
  configs: roc-rk3399-pc: Enable DM for RTC and commands

 arch/arm/dts/rk3399-roc-pc-u-boot.dtsi |   8 ++
 configs/roc-pc-rk3399_defconfig        |   2 +
 drivers/power/pmic/rk8xx.c             |  19 +++-
 drivers/rtc/Kconfig                    |   8 ++
 drivers/rtc/Makefile                   |   1 +
 drivers/rtc/rk808-rtc.c                | 165 +++++++++++++++++++++++++++++++++
 6 files changed, 202 insertions(+), 1 deletion(-)
 create mode 100644 drivers/rtc/rk808-rtc.c


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