Hello, Based on earlier work of mine for the LeMaker Guitar, this series adds initial support for the Actions Semiconductor S500 (ARMv7) and S900 (ARMv8) SoCs. Despite Actions Semi being a Linaro member since 2015, sadly I have not seen a single upstream kernel patch submission since. Nor has the XApple community taken any such initiative. The GitHub LeMaker/linux-actions and xapp-le/kernel trees have 3.10 based S500 drivers in arch/arm/mach-owl/, whereas the 96boards-bubblegum/linux tree has new-style but still 3.10 based S900 drivers. I also spotted GPLv2+ vs. GPLv2 license differences. This series therefore provides a proof of concept for a combined S500 and S900 mainline implementation. Only earlycon serial output is available for now. Focusing on Bubblegum-96, no S500 clocksource implementation is provided yet, thus output on Guitar is less than on Bubblegum-96, but still it demonstrates that a single driver can be shared for both, using compatible strings for future differentiation. https://github.com/afaerber/linux/commits/bg96-next Booting from U-Boot is straightforward on both boards. https://en.opensuse.org/HCL:Guitar https://en.opensuse.org/HCL:Bubblegum-96 Have a lot of fun! Cheers, Andreas Cc: mp-cs@xxxxxxxxxxxxxxxx Cc: info@xxxxxxxxxxxxxx Cc: support@xxxxxxxxxxx Cc: contact@xxxxxxxxxxxxxxxx Cc: devicetree@xxxxxxxxxxxxxxx Andreas Färber (11): Documentation: devicetree: Add vendor prefix for Actions Semi Documentation: devicetree: arm: Document Actions Semi S500 ARM: Prepare Actions Semi S500 ARM64: Prepare Actions Semi S900 Documentation: devicetree: serial: Document Actions Semi Owl UARTs tty: serial: Add Actions Semi Owl UART earlycon Documentation: kernel-parameters: Document owl earlycon ARM: dts: Prepare Actions Semi S500 and LeMaker Guitar Documentation: devicetree: Add vendor prefix for uCRobotics Documentation: devicetree: arm: Document Actions Semi S900 ARM64: dts: Prepare Actions Semi S900 and Bubblegum-96 Documentation/admin-guide/kernel-parameters.txt | 6 + Documentation/devicetree/bindings/arm/acts.txt | 32 +++++ .../devicetree/bindings/serial/acts,owl-uart.txt | 16 +++ .../devicetree/bindings/vendor-prefixes.txt | 2 + arch/arm/Kconfig | 2 + arch/arm/Makefile | 1 + arch/arm/boot/dts/Makefile | 2 + arch/arm/boot/dts/s500-guitar-bb-rev-b.dts | 63 ++++++++++ arch/arm/boot/dts/s500-guitar.dtsi | 49 ++++++++ arch/arm/boot/dts/s500.dtsi | 116 +++++++++++++++++ arch/arm/mach-owl/Kconfig | 9 ++ arch/arm/mach-owl/Makefile | 1 + arch/arm/mach-owl/owl.c | 28 +++++ arch/arm64/Kconfig.platforms | 5 + arch/arm64/boot/dts/Makefile | 1 + arch/arm64/boot/dts/actions/Makefile | 5 + arch/arm64/boot/dts/actions/s900-bubblegum96.dts | 62 +++++++++ arch/arm64/boot/dts/actions/s900.dtsi | 140 +++++++++++++++++++++ drivers/tty/serial/Kconfig | 19 +++ drivers/tty/serial/Makefile | 1 + drivers/tty/serial/owl-uart.c | 135 ++++++++++++++++++++ 21 files changed, 695 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/acts.txt create mode 100644 Documentation/devicetree/bindings/serial/acts,owl-uart.txt create mode 100644 arch/arm/boot/dts/s500-guitar-bb-rev-b.dts create mode 100644 arch/arm/boot/dts/s500-guitar.dtsi create mode 100644 arch/arm/boot/dts/s500.dtsi create mode 100644 arch/arm/mach-owl/Kconfig create mode 100644 arch/arm/mach-owl/Makefile create mode 100644 arch/arm/mach-owl/owl.c create mode 100644 arch/arm64/boot/dts/actions/Makefile create mode 100644 arch/arm64/boot/dts/actions/s900-bubblegum96.dts create mode 100644 arch/arm64/boot/dts/actions/s900.dtsi create mode 100644 drivers/tty/serial/owl-uart.c -- 2.10.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
