[PATCH v7 0/4] Add NVIDIA VRS RTC support

[Shubhi Garg]

Hi all,

Gentle ping on this series.


On 07/10/25 7:27 pm, Shubhi Garg wrote:
> This patch series adds support for NVIDIA's Voltage Regulator Specification
> (VRS) RTC device. It provides following features:
> - read/set system time
> - 32kHz clock support with backup battery input to retain system time
>    across boot
> - alarm functionality to wake system from suspend and shutdown state
> 
> The series includes:
> - Device tree bindings for the VRS RTC
> - VRS device tree nodes for NVIDIA platforms
> - VRS RTC device driver
> - Configuration updates to enable the driver
> 
> Changes in v7:
> - rtc driver fixes to remove mutex lock
> - moved rtc register definitions in driver
> - dt binding file name fix to keep same as compatible
> 
> Changes in v6:
> - compatible name fixes to "nvidia,vrs-10"
> - changed dtb node name to pmic at 3c
> 
> Changes in v5:
> - moved device tree bindings from mfd to rtc
> - changed dtb node name to rtc at 3c
> - removed VRS MFD driver
> - moved VRS common functions to RTC driver
> - removed unused register definitions from header
> - changed driver compatible to "nvidia,vrs10-rtc"
> 
> Changes in v4:
> - fixed device tree node name to "pmic at 3c" in dtb aliases
> 
> Changes in v3:
> - fixed device tree node name to generic "pmic at 3c"
> - fixed indentation in dt-bindings
> - added rate limiting to interrupt clearing debug logs
> - removed unnecessary braces in if blocks
> - changed dependency from I2C=y to I2C in mfd Kconfig
> - fixed return value in RTC driver function calls
> - fixed sizeof(*variable) inside rtc driver devm_kzalloc
> - switch to devm_device_init_wakeup() for automatic cleanup
> 
> Changes in v2:
> - fixed, copyrights, definitions and dtb node in dt-bindings
> - removed unnecessary logs from MFD and RTC driver
> - fixed RTC allocation and registration APIs
> - removed unnecessary functions in RTC driver
> - used rtc_lock/unlock in RTC irq handler
> - added alias to assign VRS RTC as RTC0
> - added driver entry in MAINTAINERS
> - few other miinor changes done in drivers
> 
> Shubhi Garg (4):
>    dt-bindings: rtc: Document NVIDIA VRS RTC
>    arm64: tegra: Add device-tree node for NVVRS RTC
>    rtc: nvvrs: add NVIDIA VRS RTC device driver
>    arm64: defconfig: enable NVIDIA VRS PSEQ RTC
> 
>   .../bindings/rtc/nvidia,vrs-10.yaml           |  59 ++
>   MAINTAINERS                                   |   8 +
>   .../arm64/boot/dts/nvidia/tegra234-p3701.dtsi |  11 +
>   .../arm64/boot/dts/nvidia/tegra234-p3767.dtsi |  15 +
>   arch/arm64/configs/defconfig                  |   1 +
>   drivers/rtc/Kconfig                           |   9 +
>   drivers/rtc/Makefile                          |   1 +
>   drivers/rtc/rtc-nvidia-vrs10.c                | 542 ++++++++++++++++++
>   8 files changed, 646 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/rtc/nvidia,vrs-10.yaml
>   create mode 100644 drivers/rtc/rtc-nvidia-vrs10.c
> 

-- 
Regards,
Shubhi