Hello, This patch series adds initial drivers and Device Trees for Sunplus Plus1 series (codename Pentagram) SP7021 SoC and Banana Pi BPI-F2S SBC. First, minimal Kconfig, DT and earlycon driver are prepared to get serial output at all. Next, interrupt controller and full serial driver are added that allow to boot into an initrd with interactive serial console. Device Tree files added are for the CPU-Chip (aka A-Chip) with quad Cortex-A7, but the file split prepares for also adding the Peripheral-Chip (B-Chip) with ARM9 later. However, for now this is not reflected in the .dts filename; this corresponds to the vf610- vs. vf610m4- naming scheme, whereas an alternative would be to use sp7021-cchip- vs. -pchip- prefix (as sp7021-cpu- looks weird). It is assumed we can reuse the same SoC and board bindings for CA7 and ARM9 and only differ for IP blocks where needed. My inquiry to Sunplus about their GIC (anticipating complaints from Marc) remained unanswered, so I've added the two extra regions and irq myself, without being able to test KVM due to BSP U-Boot not booting in HYP mode. According to Sunplus the mode can be changed in U-Boot (but where/how?). Similarly, the architectural timer is not properly initialized in BSP U-Boot, so that I currently have a mach- hack in my tree below. Unlike RTD1195, we do have U-Boot sources (v2019.04 based), so should be able to fix this in the bootloader rather than in the kernel, thus not included as patch here. Based on SoC online manual [1] and downstream BPI-F2S BSP tree [2] as well as my previous Actions serial and Realtek irqchip drivers and DTs. More details at: https://en.opensuse.org/HCL:BananaPi_F2S Latest experimental patches at: https://github.com/afaerber/linux/commits/f2s-next Have a lot of fun! Cheers, Andreas [1] https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/pages/470450252/SP7021+Technical+Manual [2] https://github.com/BPI-SINOVOIP/BPI-F2S-bsp Cc: devicetree@xxxxxxxxxxxxxxx Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: linux-serial@xxxxxxxxxxxxxxx Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Jason Cooper <jason@xxxxxxxxxxxxxx> Cc: Marc Zyngier <maz@xxxxxxxxxx> Cc: Wells Lu 呂芳騰 <wells.lu@xxxxxxxxxxx> Cc: Dvorkin Dmitry <dvorkin@xxxxxxxxx> Andreas Färber (11): dt-bindings: vendor-prefixes: Add Sunplus dt-bindings: arm: Add Sunplus SP7021 and Banana Pi BPI-F2S ARM: Prepare Sunplus Plus1 SoC family dt-bindings: interrupt-controller: Add Sunplus SP7021 mux dt-bindings: serial: Add Sunplus SP7021 UART tty: serial: Add Sunplus Plus1 UART earlycon ARM: dts: Add Sunplus Plus1 SP7021 and Banana Pi F2S tty: serial: sunplus: Implement full UART driver irqchip: Add Sunplus SP7021 interrupt (mux) controller ARM: dts: sp7021-cpu: Add interrupt controller node ARM: dts: sp7021-cpu: Add dummy UART0 clock and interrupt Documentation/devicetree/bindings/arm/sunplus.yaml | 22 + .../sunplus,pentagram-intc.yaml | 50 ++ .../bindings/serial/sunplus,pentagram-uart.yaml | 24 + .../devicetree/bindings/vendor-prefixes.yaml | 2 + arch/arm/Kconfig | 2 + arch/arm/Makefile | 1 + arch/arm/boot/dts/Makefile | 2 + arch/arm/boot/dts/pentagram-sp7021-bpi-f2s.dts | 29 + arch/arm/boot/dts/pentagram-sp7021-cpu.dtsi | 93 +++ arch/arm/boot/dts/pentagram-sp7021.dtsi | 61 ++ arch/arm/mach-sunplus/Kconfig | 10 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-sp7021.c | 285 ++++++++ drivers/tty/serial/Kconfig | 19 + drivers/tty/serial/Makefile | 1 + drivers/tty/serial/sunplus-uart.c | 770 +++++++++++++++++++++ include/uapi/linux/serial_core.h | 3 + 17 files changed, 1375 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/sunplus.yaml create mode 100644 Documentation/devicetree/bindings/interrupt-controller/sunplus,pentagram-intc.yaml create mode 100644 Documentation/devicetree/bindings/serial/sunplus,pentagram-uart.yaml create mode 100644 arch/arm/boot/dts/pentagram-sp7021-bpi-f2s.dts create mode 100644 arch/arm/boot/dts/pentagram-sp7021-cpu.dtsi create mode 100644 arch/arm/boot/dts/pentagram-sp7021.dtsi create mode 100644 arch/arm/mach-sunplus/Kconfig create mode 100644 drivers/irqchip/irq-sp7021.c create mode 100644 drivers/tty/serial/sunplus-uart.c -- 2.16.4
