This patch series adds support for the Microchip PIC32MZDA MIPS platform. All drivers required to boot from a MMC uSD card are included. Clock, external interrupt controller, serial, SDHCI, and pinctrl/gpio drivers are included. This has been tested on a PIC32MZDA Starter Kit. A tree with these changes is available at [0]. [0] https://github.com/joshua-henderson/linux/tree/pic32-upstream-v5 Changes since v4 (https://lkml.org/lkml/2016/1/8/964 https://lkml.org/lkml/2016/1/8/965): + Add soc node for core timer interrupt to DTS + Add external IRQ property to DTS + Clean up irq alloc on failure + Fix rework regression with handling failure in probe + Select config PIC32_EVIC for PIC32MZDA + Implement get_c0_compare_int() in platform using DTS + Rearchitect (rewrite) to use generic chip + Be consistent with naming of functions, use pic32_ prefix + Move get_c0_compare_int() to platform where it belongs + Drop obsolete header + Add comments about the handler flow of the different interrupt types + Prevent external interrupts from being requested as level flow type + Simplify/optimize register access + Configure external interrupts from DT + Simplify plat_irq_dispatch() implementation + Change irq chip names to evic-* + Add EVIC_PIC32 config option and have platform select it + Support to configure core timer interrupt from DT + Use proper code comment formatting + Add new microchip,external-interrupts property + Provide a better description of some of the features + Clean up formatting Changes since v3 (https://lkml.org/lkml/2016/1/7/760): + Remove broken URL and use full manual name for boot protocol + Formatting and comment location + Move functions to remove need for forward declaration Changes since v2 (https://lkml.org/lkml/2015/12/14/818): + Prefer dt/bindings: prefix for subject + Remove redundant irq_chip functions in interrupt driver + Use 'sdhci_pltfm_*' instead of 'sdhci_*_host' and other cleanup + Use dynamic major/minor and ttyPIC* instead of ttyS* + Follow device-tree node naming convention for clocks + Remove pinctrl pins that are not port pins + Force lowercase in PIC32 clock binding documentation + Replace __clk_debug with pr_debug + Add of_clk_parent_fill usage in PIC32 clock driver + UART: Remove unused header files + UART: Refactor register read/write functions + UART: Reorder arguments to readl/writel functions + UART: Add missing initializations to termios + UART: Fix clk enable/disable mismatch Changes since v1 (https://lkml.org/lkml/2015/11/20/848): + Rename all DT compatible properties to be chip specific. + Remove hardware interrupt priorities from interrupt controller DT bindings. + Remove all dependencies on include headers used by PIC32 DTS files. + Remove arch/mips/include/asm/mach-pic32/gpio.h + Drop usage of the following, mostly non-standard, properties in DT bindings: device_type piomode no-1-8-v uart-has-rtscts clock-frequency => assigned-clock-rate + Remove PIC32 memory PLL support from DT. + Replace empty 'ranges' with populated one for clock tree node. + Rename all instances of "USART" to "UART". + Remove 'interrupts' property from FSCM of PIC32 clock tree node. + Add default REFCLK rate initialization required for SDHCI in DTS. + Remove default frequency setup for REFOSC clocks in -clk DTS. + Address missing static on local functions and other sparse warnings in several drivers. + Update pinctrl driver to address major binding and architectural issues. + Remove redundant probing 'pb7_clk' to find CPU clock. + Remove unused PIC32 MPLL support. + Remove support for initializing default parent/rate for REFOSC clocks. + Be consistent and use only "SDHCI" when referring to SD host controller + Remove unnecessary PIC32 sdhci_ops min clock function. + Make platform PIC32[_CLR|_SET|_INV] register macros safer. Andrei Pistirica (4): dt/bindings: Add bindings for PIC32 UART driver serial: pic32_uart: Add PIC32 UART driver dt/bindings: Add bindings for PIC32 SDHCI host controller mmc: sdhci-pic32: Add PIC32 SDHCI host controller driver Cristian Birsan (2): dt/bindings: Add bindings for PIC32 interrupt controller irqchip: irq-pic32-evic: Add support for PIC32 interrupt controller Joshua Henderson (6): dt/bindings: Add bindings for PIC32/MZDA platforms MIPS: Add support for PIC32MZDA platform dt/bindings: Add bindings for PIC32 pin control and GPIO pinctrl: pinctrl-pic32: Add PIC32 pin control driver MIPS: dts: Add initial DTS for the PIC32MZDA Starter Kit MIPS: pic32mzda: Add initial PIC32MZDA Starter Kit defconfig Purna Chandra Mandal (2): dt/bindings: Add PIC32 clock binding documentation clk: clk-pic32: Add PIC32 clock driver .../devicetree/bindings/clock/microchip,pic32.txt | 257 +++ .../bindings/gpio/microchip,pic32-gpio.txt | 49 + .../interrupt-controller/microchip,pic32-evic.txt | 67 + .../bindings/mips/pic32/microchip,pic32mzda.txt | 31 + .../bindings/mmc/microchip,sdhci-pic32.txt | 29 + .../bindings/pinctrl/microchip,pic32-pinctrl.txt | 60 + .../bindings/serial/microchip,pic32-uart.txt | 29 + arch/mips/Kbuild.platforms | 1 + arch/mips/Kconfig | 9 + arch/mips/boot/dts/Makefile | 1 + arch/mips/boot/dts/pic32/Makefile | 12 + arch/mips/boot/dts/pic32/pic32mzda-clk.dtsi | 236 ++ arch/mips/boot/dts/pic32/pic32mzda.dtsi | 281 +++ arch/mips/boot/dts/pic32/pic32mzda_sk.dts | 151 ++ arch/mips/configs/pic32mzda_defconfig | 89 + .../include/asm/mach-pic32/cpu-feature-overrides.h | 32 + arch/mips/include/asm/mach-pic32/irq.h | 22 + arch/mips/include/asm/mach-pic32/pic32.h | 44 + arch/mips/include/asm/mach-pic32/spaces.h | 24 + arch/mips/pic32/Kconfig | 51 + arch/mips/pic32/Makefile | 6 + arch/mips/pic32/Platform | 7 + arch/mips/pic32/common/Makefile | 5 + arch/mips/pic32/common/irq.c | 21 + arch/mips/pic32/common/reset.c | 62 + arch/mips/pic32/pic32mzda/Makefile | 9 + arch/mips/pic32/pic32mzda/config.c | 126 ++ arch/mips/pic32/pic32mzda/early_clk.c | 106 + arch/mips/pic32/pic32mzda/early_console.c | 171 ++ arch/mips/pic32/pic32mzda/early_pin.c | 275 +++ arch/mips/pic32/pic32mzda/early_pin.h | 241 ++ arch/mips/pic32/pic32mzda/init.c | 156 ++ arch/mips/pic32/pic32mzda/pic32mzda.h | 29 + arch/mips/pic32/pic32mzda/time.c | 73 + drivers/clk/Kconfig | 3 + drivers/clk/Makefile | 1 + drivers/clk/clk-pic32.c | 1801 +++++++++++++++ drivers/irqchip/Kconfig | 5 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-pic32-evic.c | 324 +++ drivers/mmc/host/Kconfig | 11 + drivers/mmc/host/Makefile | 1 + drivers/mmc/host/sdhci-pic32.c | 257 +++ drivers/pinctrl/Kconfig | 17 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-pic32.c | 2339 ++++++++++++++++++++ drivers/pinctrl/pinctrl-pic32.h | 141 ++ drivers/tty/serial/Kconfig | 21 + drivers/tty/serial/Makefile | 1 + drivers/tty/serial/pic32_uart.c | 960 ++++++++ drivers/tty/serial/pic32_uart.h | 126 ++ include/linux/platform_data/sdhci-pic32.h | 22 + include/uapi/linux/serial_core.h | 3 + 53 files changed, 8797 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/microchip,pic32.txt create mode 100644 Documentation/devicetree/bindings/gpio/microchip,pic32-gpio.txt create mode 100644 Documentation/devicetree/bindings/interrupt-controller/microchip,pic32-evic.txt create mode 100644 Documentation/devicetree/bindings/mips/pic32/microchip,pic32mzda.txt create mode 100644 Documentation/devicetree/bindings/mmc/microchip,sdhci-pic32.txt create mode 100644 Documentation/devicetree/bindings/pinctrl/microchip,pic32-pinctrl.txt create mode 100644 Documentation/devicetree/bindings/serial/microchip,pic32-uart.txt create mode 100644 arch/mips/boot/dts/pic32/Makefile create mode 100644 arch/mips/boot/dts/pic32/pic32mzda-clk.dtsi create mode 100644 arch/mips/boot/dts/pic32/pic32mzda.dtsi create mode 100644 arch/mips/boot/dts/pic32/pic32mzda_sk.dts create mode 100644 arch/mips/configs/pic32mzda_defconfig create mode 100644 arch/mips/include/asm/mach-pic32/cpu-feature-overrides.h create mode 100644 arch/mips/include/asm/mach-pic32/irq.h create mode 100644 arch/mips/include/asm/mach-pic32/pic32.h create mode 100644 arch/mips/include/asm/mach-pic32/spaces.h create mode 100644 arch/mips/pic32/Kconfig create mode 100644 arch/mips/pic32/Makefile create mode 100644 arch/mips/pic32/Platform create mode 100644 arch/mips/pic32/common/Makefile create mode 100644 arch/mips/pic32/common/irq.c create mode 100644 arch/mips/pic32/common/reset.c create mode 100644 arch/mips/pic32/pic32mzda/Makefile create mode 100644 arch/mips/pic32/pic32mzda/config.c create mode 100644 arch/mips/pic32/pic32mzda/early_clk.c create mode 100644 arch/mips/pic32/pic32mzda/early_console.c create mode 100644 arch/mips/pic32/pic32mzda/early_pin.c create mode 100644 arch/mips/pic32/pic32mzda/early_pin.h create mode 100644 arch/mips/pic32/pic32mzda/init.c create mode 100644 arch/mips/pic32/pic32mzda/pic32mzda.h create mode 100644 arch/mips/pic32/pic32mzda/time.c create mode 100644 drivers/clk/clk-pic32.c create mode 100644 drivers/irqchip/irq-pic32-evic.c create mode 100644 drivers/mmc/host/sdhci-pic32.c create mode 100644 drivers/pinctrl/pinctrl-pic32.c create mode 100644 drivers/pinctrl/pinctrl-pic32.h create mode 100644 drivers/tty/serial/pic32_uart.c create mode 100644 drivers/tty/serial/pic32_uart.h create mode 100644 include/linux/platform_data/sdhci-pic32.h -- 1.7.9.5
