This patch series adds GPIO drivers, DT documentation and DT nodes for HiFive Unleashed board. The gpio patches are mostly based on Wesley's patch. The patchset also adds hierarchy irq domain support as it is required by this gpio driver. This patchset is based on Linux 5.4-rc6 and tested on HiFive Unleashed board Changes since RFC version: Incorporated below changes as suggested by Linus Walleij on RFC version of this patchset[0] - Dropped PWM patches as they are already merged. - Include "GPIO_GENERIC" and "REGMAP_MMIO" in Kconfig select option - Remove unwanted inclusion of header files - Use regmap MMIO instead of customised sifive_assign_bit() - Use GPIOLIB_GENERIC and bgpio_init() to set up the accessors - Use hierarchical irqdomain [0] https://lore.kernel.org/linux-riscv/20181010123519.RVexDppaPFpIWl7QU_hpP8tc5qqWPJgeuLYn0FaGbeQ@z/ Yash Shah (4): irqchip: sifive: Support hierarchy irq domain gpio: sifive: Add DT documentation for SiFive GPIO gpio: sifive: Add GPIO driver for SiFive SoCs riscv: dts: Add DT support for SiFive FU540 GPIO driver .../devicetree/bindings/gpio/gpio-sifive.txt | 33 +++ arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 14 +- .../riscv/boot/dts/sifive/hifive-unleashed-a00.dts | 4 + drivers/gpio/Kconfig | 9 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-sifive.c | 255 +++++++++++++++++++++ drivers/irqchip/Kconfig | 1 + drivers/irqchip/irq-sifive-plic.c | 41 +++- 8 files changed, 353 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-sifive.txt create mode 100644 drivers/gpio/gpio-sifive.c -- 2.7.4
