Hi folks, Firstly, thanks to everyone who reviewed the previous series. V4 incorporates all the review feedback received so far, and is rebased onto linux-next. As this series spans multiple subsytems the expectation is that Krzysztof will apply the whole series through the Samsung SoC tree. If the relevant subsystem maintainers can give a acked-by or reviewed-by on the relevant patches that would be most appreciated! This series adds initial SoC support for the GS101 SoC and also initial board support for Pixel 6 phone (Oriole). The gs101 / Tensor SoC is also used in Pixel6a (bluejay) and Pixel 6 Pro (raven) phones. Currently DT is added for the gs101 SoC and Oriole. As you can see from the patches the SoC is based on a Samsung Exynos SoC, and therefore lots of the low level Exynos drivers and bindings can be re-used. The support added in this series consists of: * cpus * pinctrl * some CCF implementation * watchdog * uart * gpio This is enough to boot through to a busybox initramfs and shell using an upstream kernel though :) More platform support will be added over the following weeks and months. For further information on how to build and flash the upstream kernel on your Pixel 6, with a prebuilt busybox initramfs please refer to the script and README.md here: https://git.codelinaro.org/linaro/googlelt/pixelscripts Note 1: I've removed the dtbo overlay from v2 and later submissions and will re-submit once I have appropriate documentation for it. Note 2: I've left the bootargs in dts with earlycon for now, for two reasons. 1) The bootloader hangs if bootargs isn't present in the dtb as it tries to re-write this with additional bootargs. 2) There is a issue whereby the full serial console doesn't come up properly if `exynos4210,mmio32,0x10A00000` isn't specified in bootargs. This has been diagnosed by Tudor as some prior bootstage adding earlycon to the bootargs but not specifying the 'mmio32' parameter which then causes earlycon to use 8bit accesses. On gs101 blk_perioc0 is restricted to 32b data width accesses causing a SError interrupt before any earlycon UART output. kind regards, Peter. Changes since v3: - Add reviewed-by and tested-by tags - google,gs101-clock.yaml: move Required to before Allof, enum for cmu*top/misc (Krzysztof) - samsung-wdt.yaml: stick to 80chars (Sam) - google.yaml - remove new line - samsung,pinctrl-wakeup-interrupt: sort alphabetically (RobH) - gs101-oriole.dts: update gpio-keys pinctrl-0 phandle for keys (Stephen) - samsung,exynos-sysreg.yaml - Alphabetical order (RobH) - pinctrl-exynos: update/move comments, slight cosmetic changes (Sam) - samsung_tty.c: update to generic drv_data name/macro (Arnd) - samsung_uart.yaml: make samsung,uart-fifosize required for gs101-uart (Arnd) - pinctrl-exynos: Remove eint irqs from alive pin controller node (Peter/Rob) - Fixup kernel test robot unused const variable warnings - clk-gs101: Update to mout_cmu_eh_bus to CLK_CON_MUX_MUX_CLKCMU_EH_BUS (Chanwoo) - clk-gs101: Update g3aa gout/dout/mout names to g3aa_g3aa for consistency (Chanwoo) - Remove .eint_gpio_init() cb on alive, alive_far, gsacore & gsactrl banks (Sam) - s3c2410_wdt: Drop windowed watchdog mode for now (Peter) - s3c2410_wdt: Separate gs101 SoC support from dbgack feature (Sam) - Move dts to arch/arm64/boot/dts/exynos/google directory (Krzysztof) Changes since v2: - Fixup pinctrl@174d0000: interrupts: [..] is too long DTC warning (Tudor) - Add missing windowed watchdog code (Guenter) - Fixup UART YAML bindings error (Krzysztof) - gs101.dtsi add missing serial_0 alias (me) - samsung_tty.c: fixup gs101_serial_drv_data so fifosize is obtained from DT Changes since v1: - Remove irq/gs101.h and replace macros with irq numbers globally - exynos-pmu - keep alphabetical order - add cmu_apm to clock bindings documentation - sysreg bindings - remove superfluous `google,gs101-sysreg` - watchdog bindings - Alphanumerical order, update gs201 comment - samsung,pinctrl.yaml - add new "if:then:else:" to narrow for google SoC - samsung,pinctrl-wakeup-interrupt.yaml - Alphanumerical order - samsung,pinctrl- add google,gs101-wakeup-eint compatible - clk-pll: fixup typos - clk-gs101: fix kernel test robot warnings (add 2 new clocks,dividers,gate) - clk-gs101: fix alphabetical order - clk-gs101: cmu_apm: fixup typo and missing empty entry - clk-gs101: cmu_misc: remove clocks that were being registerred twice - pinctrl: filter sel: rename/reorder variables, add comment for FLTCON bitfield - pinctrl: filter sel: avoid setting reserved bits by loop over FLTCON1 pins as well - pinctrl: gs101: rename bank_type_6/7 structs to be more specific, split from filter - watchdog: s3c2410_wdt: remove dev_info prints - gs101.dtsi/oriole.dts: order by unit node, remove underscores from node name, blank lines add SoC node, split dts and dtsi into separate patches, remove 'DVT' suffix - gs101-oriole.dtso: Remove overlay until board_id is documented properly - Add GS101_PIN_* macros to gs101-pinctrl.h instead of using Exynos ones - gpio-keys: update linux,code to use input-event-code macros - add dedicated gs101-uart compatible Peter Griffin (19): dt-bindings: soc: samsung: exynos-pmu: Add gs101 compatible dt-bindings: clock: Add Google gs101 clock management unit bindings dt-bindings: soc: google: exynos-sysreg: add dedicated SYSREG compatibles to GS101 dt-bindings: watchdog: Document Google gs101 watchdog bindings dt-bindings: arm: google: Add bindings for Google ARM platforms dt-bindings: pinctrl: samsung: add google,gs101-pinctrl compatible dt-bindings: pinctrl: samsung: add gs101-wakeup-eint compatible dt-bindings: serial: samsung: Add google-gs101-uart compatible dt-bindings: serial: samsung: Make samsung,uart-fifosize required property clk: samsung: clk-pll: Add support for pll_{0516,0517,518} clk: samsung: clk-gs101: Add cmu_top, cmu_misc and cmu_apm support pinctrl: samsung: Add filter selection support for alive banks pinctrl: samsung: Add gs101 SoC pinctrl configuration watchdog: s3c2410_wdt: Add support for Google gs101 SoC watchdog: s3c2410_wdt: Add support for WTCON register DBGACK_MASK bit tty: serial: samsung: Add gs101 compatible and common fifoszdt_serial_drv_data arm64: dts: exynos: google: Add initial Google gs101 SoC support arm64: dts: exynos: google: Add initial Oriole/pixel 6 board support MAINTAINERS: add entry for Google Tensor SoC .../devicetree/bindings/arm/google.yaml | 45 + .../bindings/clock/google,gs101-clock.yaml | 110 + .../samsung,pinctrl-wakeup-interrupt.yaml | 2 + .../bindings/pinctrl/samsung,pinctrl.yaml | 1 + .../bindings/serial/samsung_uart.yaml | 18 + .../bindings/soc/samsung/exynos-pmu.yaml | 2 + .../soc/samsung/samsung,exynos-sysreg.yaml | 6 + .../bindings/watchdog/samsung-wdt.yaml | 8 +- MAINTAINERS | 10 + arch/arm64/boot/dts/exynos/Makefile | 2 + arch/arm64/boot/dts/exynos/google/Makefile | 4 + .../boot/dts/exynos/google/gs101-oriole.dts | 79 + .../boot/dts/exynos/google/gs101-pinctrl.dtsi | 1275 +++++++++++ .../boot/dts/exynos/google/gs101-pinctrl.h | 32 + arch/arm64/boot/dts/exynos/google/gs101.dtsi | 437 ++++ drivers/clk/samsung/Makefile | 1 + drivers/clk/samsung/clk-gs101.c | 2036 +++++++++++++++++ drivers/clk/samsung/clk-pll.c | 6 + drivers/clk/samsung/clk-pll.h | 3 + .../pinctrl/samsung/pinctrl-exynos-arm64.c | 159 ++ drivers/pinctrl/samsung/pinctrl-exynos.c | 91 +- drivers/pinctrl/samsung/pinctrl-exynos.h | 41 + drivers/pinctrl/samsung/pinctrl-samsung.c | 4 + drivers/pinctrl/samsung/pinctrl-samsung.h | 23 + drivers/tty/serial/samsung_tty.c | 16 + drivers/watchdog/s3c2410_wdt.c | 75 +- include/dt-bindings/clock/google,gs101.h | 232 ++ 27 files changed, 4707 insertions(+), 11 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/google.yaml create mode 100644 Documentation/devicetree/bindings/clock/google,gs101-clock.yaml create mode 100644 arch/arm64/boot/dts/exynos/google/Makefile create mode 100644 arch/arm64/boot/dts/exynos/google/gs101-oriole.dts create mode 100644 arch/arm64/boot/dts/exynos/google/gs101-pinctrl.dtsi create mode 100644 arch/arm64/boot/dts/exynos/google/gs101-pinctrl.h create mode 100644 arch/arm64/boot/dts/exynos/google/gs101.dtsi create mode 100644 drivers/clk/samsung/clk-gs101.c create mode 100644 include/dt-bindings/clock/google,gs101.h -- 2.43.0.rc1.413.gea7ed67945-goog
