Add support for building flattened DT files from DT source files under arch/riscv/boot/dts. Follow existing kernel precedent from other SoC architectures. Start our board support by adding initial support for the SiFive FU540 SoC and the first development board that uses it, the SiFive HiFive Unleashed A00. This second version of the patch set fixes several errors in the original patch set, switches to an initial YAML-based description for CPU, board SoC selection, and incorporates feedback from Rob Herring <robh@xxxxxxxxxx>. Rob: it would be helpful if you could take a look at the YAML files to make sure I'm not doing anything explicitly broken; I'm pretty naive about the new YAML json-schema format. The patches here are meant to be starting points which will undoubtedly be refined later. Similarly we'll plan to convert our IP block binding documentation to the YAML format over time as we develop more experience with it. Boot-tested on v5.1-rc4 on a HiFive Unleashed A00 board, using the BBL and open-source FSBL, with modifications to pass in the DTB file generated by these patches. This patch series can be found, along with the PRCI patch set and the DT macro prerequisite patch, at: https://github.com/sifive/riscv-linux/tree/dev/paulw/dts-v5.1-rc4 - Paul Paul Walmsley (6): arch: riscv: add support for building DTB files from DT source data dt-bindings: riscv: sifive: add YAML documentation for the SiFive FU540 dt-bindings: riscv: convert cpu binding to json-schema riscv: dts: add initial support for the SiFive FU540-C000 SoC riscv: dts: add initial board data for the SiFive HiFive Unleashed riscv: defconfig: enable ARCH_SIFIVE .../devicetree/bindings/riscv/cpus.yaml | 274 ++++++++++++++++++ .../devicetree/bindings/riscv/sifive.yaml | 26 ++ MAINTAINERS | 9 + arch/riscv/Kconfig | 2 + arch/riscv/Kconfig.platforms | 8 + arch/riscv/boot/dts/Makefile | 2 + arch/riscv/boot/dts/sifive/Makefile | 2 + arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 207 +++++++++++++ .../dts/sifive/hifive-unleashed-a00-fu540.dts | 69 +++++ arch/riscv/configs/defconfig | 1 + 10 files changed, 600 insertions(+) create mode 100644 Documentation/devicetree/bindings/riscv/cpus.yaml create mode 100644 Documentation/devicetree/bindings/riscv/sifive.yaml create mode 100644 arch/riscv/Kconfig.platforms create mode 100644 arch/riscv/boot/dts/Makefile create mode 100644 arch/riscv/boot/dts/sifive/Makefile create mode 100644 arch/riscv/boot/dts/sifive/fu540-c000.dtsi create mode 100644 arch/riscv/boot/dts/sifive/hifive-unleashed-a00-fu540.dts -- 2.20.1
