AST2600 SoC has 2 SGPIO master interfaces one with 128 pins another one with 80 pins, AST2500/AST2400 SoC has 1 SGPIO master interface that supports up to 80 pins. In the current driver design, the max number of sgpio pins is hardcoded in macro MAX_NR_HW_SGPIO and the value is 80. For supporting sgpio master interfaces of AST2600 SoC, the patch series contains the following enhancement: - Convert txt dt-bindings to yaml. - Update aspeed-g6 dtsi to support the enhanced sgpio. - Define max number of gpio pins in ast2600 platform data. Old chip uses the original hardcoded value. - Support muiltiple SGPIO master interfaces. - Support up to 128 pins. - Support wdt reset tolerance. - Fix irq_chip issues which causes multiple sgpio devices use the same irq_chip data. - Replace all of_*() APIs with device_*(). Changes from v3: * Split dt-bindings patch to 2 patches * Rename ast2600-sgpiom1 compatible with ast2600-sgiom-128 * Rename ast2600-sgpiom2 compatible with ast2600-sgiom-80 * Correct the typo in commit messages. * Fix coding style issues. * Replace all of_*() APIs with device_*(). Changes from v2: * Remove maximum/minimum of ngpios from bindings. * Remove max-ngpios from bindings and dtsi. * Remove ast2400-sgpiom and ast2500-sgpiom compatibles from dts and driver. * Add ast2600-sgpiom1 and ast2600-sgpiom2 compatibles as their max number of available gpio pins are different. * Modify functions to pass aspeed_sgpio struct instead of passing max_ngpios. * Split sgpio driver patch to 3 patches Changes from v1: * Fix yaml format issues. * Fix issues reported by kernel test robot. Please help to review. Thanks, Steven Steven Lee (7): dt-bindings: aspeed-sgpio: Convert txt bindings to yaml. dt-bindings: aspeed-sgpio: Add ast2600 sgpio compatibles. ARM: dts: aspeed-g6: Add SGPIO node. gpio: gpio-aspeed-sgpio: Add AST2600 sgpio support gpio: gpio-aspeed-sgpio: Add set_config function gpio: gpio-aspeed-sgpio: Move irq_chip to aspeed-sgpio struct gpio: gpio-aspeed-sgpio: Use generic device property APIs .../bindings/gpio/aspeed,sgpio.yaml | 78 ++++++++ .../devicetree/bindings/gpio/sgpio-aspeed.txt | 46 ----- arch/arm/boot/dts/aspeed-g6.dtsi | 30 +++ drivers/gpio/gpio-aspeed-sgpio.c | 185 +++++++++++++----- 4 files changed, 244 insertions(+), 95 deletions(-) create mode 100644 Documentation/devicetree/bindings/gpio/aspeed,sgpio.yaml delete mode 100644 Documentation/devicetree/bindings/gpio/sgpio-aspeed.txt -- 2.17.1
