[PATCH v4 0/2] Add Loongson-2K0300 processor support

[wjjsn]

The first patch adds the necessary DT binding documentation,
and the second patch adds the DTS and DTSI files for the SoC
and the board.

Changes in v4:
- Fix a typo in v3 dt-bindings where 'loongson,99pi' was 
  incorrectly used instead of 'loongson,ls2k0300-ref'.

Changes in v3:
- Corrected the compatible string in DT bindings from 'loongson,99pi' 
  to 'loongson,ls2k0300-ref' to match the board's formal name.

Changes in v2:
- Add DT bindings.
- Included the missing Documentation/devicetree/bindings/ modification.

Known issues:
1. The clk controller node is correctly defined, but some frequency
   configurations rely on future driver-side fixes.
2. uart0 is currently placed under the root node as the 2K0300
   manual lacks explicit documentation on the bus/interconnect 
   hierarchy (comparable to the bus@10000000 in other 2K SoCs).

wjjsn (2):
  dt-bindings: loongarch: Add Loongson-2K0300
  loongarch: boot: dts: Add Loongson-2K0300 support

 .../bindings/loongarch/loongson.yaml          |  4 +
 arch/loongarch/boot/dts/Makefile              |  2 +-
 .../boot/dts/loongson-2k0300-ref.dts          | 34 +++++++
 arch/loongarch/boot/dts/loongson-2k0300.dtsi  | 95 +++++++++++++++++++
 4 files changed, 134 insertions(+), 1 deletion(-)
 create mode 100644 arch/loongarch/boot/dts/loongson-2k0300-ref.dts
 create mode 100644 arch/loongarch/boot/dts/loongson-2k0300.dtsi

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2.43.0