[00/12] Add RTC support for the Renesas RZ/G3S SoC

Message

claudiu beznea June 14, 2024, 7:19 a.m. UTC

From: Claudiu Beznea <[e-mail]>

Hi,

On the Renesas RZ/G3S SoC the RTC clock is provided by the VBATTB
IP. A 32 KHz crystall oscillator could be connected to the VBATTB
input pins. The logic to control this clock (and pass it to RTC)
is inside the VBATTB IP. For this, the clk-vbattb driver was added
(patches 01-04/12).

Patches 05-06/12 add the RTC driver.

Patches 07-10/12 update the device trees with proper nodes to enable RTC.

Patches 11-12/12 enable proper config flags for RTC to work on RZ/G3S SoC.

Thank you,
Claudiu Beznea

Claudiu Beznea (12):
  clk: renesas: r9a08g045: Add clock, reset and power domain support for
    the VBATTB IP
  dt-bindings: clock: renesas,rzg3s-vbattb-clk: Document the VBATTB
    clock driver
  dt-bindings: mfd: renesas,rzg3s-vbattb: Document VBATTB
  clk: renesas: clk-vbattb: Add VBATTB clock driver
  dt-bindings: rtc: renesas,rzg3s-rtc: Document the Renesas RZ/G3S RTC
  rtc: renesas-rtca3: Add driver for RTCA-3 available on Renesas RZ/G3S
    SoC
  arm64: dts: renesas: r9a08g045: Add VBATTB node
  arm64: dts: renesas: r9a08g045: Add RTC node
  arm64: dts: renesas: rzg3s-smarc-som: Enable VBATTB clock
  arm64: dts: renesas: rzg3s-smarc-som: Enable RTC
  arm64: defconfig: Enable VBATTB clock flag
  arm64: defconfig: Enable Renesas RTCA-3 flag

 .../clock/renesas,rzg3s-vbattb-clk.yaml       |  90 ++
 .../bindings/mfd/renesas,rzg3s-vbattb.yaml    |  99 ++
 .../bindings/rtc/renesas,rzg3s-rtc.yaml       |  60 ++
 MAINTAINERS                                   |   8 +
 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    |  44 +
 .../boot/dts/renesas/rzg3s-smarc-som.dtsi     |  17 +
 arch/arm64/configs/defconfig                  |   2 +
 drivers/clk/renesas/Kconfig                   |   4 +
 drivers/clk/renesas/Makefile                  |   1 +
 drivers/clk/renesas/clk-vbattb.c              | 202 ++++
 drivers/clk/renesas/r9a08g045-cpg.c           |   6 +
 drivers/rtc/Kconfig                           |  10 +
 drivers/rtc/Makefile                          |   1 +
 drivers/rtc/rtc-renesas-rtca3.c               | 891 ++++++++++++++++++
 14 files changed, 1435 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/renesas,rzg3s-vbattb-clk.yaml
 create mode 100644 Documentation/devicetree/bindings/mfd/renesas,rzg3s-vbattb.yaml
 create mode 100644 Documentation/devicetree/bindings/rtc/renesas,rzg3s-rtc.yaml
 create mode 100644 drivers/clk/renesas/clk-vbattb.c
 create mode 100644 drivers/rtc/rtc-renesas-rtca3.c