This patch series adds minimum support to boot a Banana Pi BPI-W2. This board serial interface is muxed through a custom Realtek driver not currently in mainline. Without the driver, it is only possible to initialize a bootconsole, but init cannot be run. The datasheet of the board's RTD1296 SoC is not publicly available and the procedure to interface the interrupt controller registers is not completely known yet, however, it works. This patch is based on the official BPI-W2 downstream kernel driver [1] and the last attempt of Andreas Färber [2] to support such driver. Please, note that the board still requires a slightly modified version of the downstreamed Realtek U-Boot to launch the Linux Kernel, which essentially removes the need for some dts nodes not included in this patch and reallocates u-boot before loading the kernel to avoid overriding U-Boot code. [1] - https://github.com/BPI-SINOVOIP/BPI-W2-bsp [2] - https://patchwork.kernel.org/patch/10011891 Aleix Roca Nonell (6): dt-bindings: interrupt-controller: Document RTD129x irqchip: Add Realtek RTD129x intc driver arm64: dts: realtek: Move rtd1295 memreserve areas from the generic rtd129x to its specific dtsi arm64: dts: realtek: Add realtek intc to RTD129x dt-bindings: arm: Document RTD1296 arm64: dts: realtek: Add bpi-w2 board support and its RTD1296 SoC .../devicetree/bindings/arm/realtek.txt | 13 + .../realtek,rtd129x-intc.txt | 24 ++ arch/arm64/boot/dts/realtek/Makefile | 1 + arch/arm64/boot/dts/realtek/rtd1295.dtsi | 3 + .../dts/realtek/rtd1296-bananapi-bpi-w2.dts | 27 ++ arch/arm64/boot/dts/realtek/rtd1296.dtsi | 77 ++++ arch/arm64/boot/dts/realtek/rtd129x.dtsi | 12 +- drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-rtd129x.c | 371 ++++++++++++++++++ 9 files changed, 527 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/realtek,rtd129x-intc.txt create mode 100644 arch/arm64/boot/dts/realtek/rtd1296-bananapi-bpi-w2.dts create mode 100644 arch/arm64/boot/dts/realtek/rtd1296.dtsi create mode 100644 drivers/irqchip/irq-rtd129x.c -- 2.21.0
