Hi all: The initial DT-base ls2x rtc driver was written by Wang Xuerui, He has released five versions of patchset before, and all related mail records are shown below if you are interested: https://lore.kernel.org/all/?q=ls2x-rtc In this series of patches, based on the code above, I have added the following support: 1. Add ACPI-related support, as Loongson-3A5000 + LS7A is now ACPI-base by default under LoongArch architecture; 2. Add rtc alarm/walarm related functions. I have tested on Loongson-3A5000LA+LS7A1000/LS7A2000, Loongson-2K1000LA and Loongson-2K0500. BTW: There have been discussions about merging the rtc drivers of ls1x and ls2x, but the following reasons made the merger difficult to achieve: 1. ls1x does not support ACPI, for it is only on MIPS-based system; 2. ls1x does not support alarm function. Thanks. ------- Changes since v1: 1. Rebased on top of latest loongarch-next; 2. Add interrupt descriptions to the ls2k and ls7a DTS files to avoid errors when the driver gets the IRQ number, Thanks to Qing Zhang for testing; 3. Remove some inexact CONFIG_ACPI. Binbin Zhou (4): rtc: Add support for the Loongson-2K/LS7A RTC LoongArch: Enable LS2X RTC in loongson3_defconfig MIPS: Loongson64: DTS: Add RTC support to LS7A MIPS: Loongson64: DTS: Add RTC support to Loongson-2K WANG Xuerui (3): dt-bindings: rtc: Add Loongson LS2X RTC support MIPS: Loongson: Enable LS2X RTC in loongson3_defconfig MIPS: Loongson: Enable LS2X RTC in loongson2k_defconfig .../devicetree/bindings/rtc/trivial-rtc.yaml | 2 + arch/loongarch/configs/loongson3_defconfig | 1 + .../boot/dts/loongson/loongson64-2k1000.dtsi | 7 + arch/mips/boot/dts/loongson/ls7a-pch.dtsi | 7 + arch/mips/configs/loongson2k_defconfig | 1 + arch/mips/configs/loongson3_defconfig | 1 + drivers/rtc/Kconfig | 11 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-ls2x.c | 379 ++++++++++++++++++ 9 files changed, 410 insertions(+) create mode 100644 drivers/rtc/rtc-ls2x.c -- 2.31.1
