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 dtsi to support the enhanced sgpio. - Get the max number of sgpio that SoC supported from dts. - Support muiltiple SGPIO master interfaces. - Support up to 128 pins. Please help to review. Thanks, Steven Steven Lee (4): dt-bindings: aspeed-sgpio: Convert txt bindings to yaml. ARM: dts: aspeed-g6: Add SGPIO node. ARM: dts: aspeed-g5: Modify sgpio node for the enhanced sgpio driver. gpio: gpio-aspeed-sgpio: Add AST2600 sgpio support .../bindings/gpio/aspeed,sgpio.yaml | 91 +++++++++ .../devicetree/bindings/gpio/sgpio-aspeed.txt | 46 ----- arch/arm/boot/dts/aspeed-g5.dtsi | 3 +- arch/arm/boot/dts/aspeed-g6.dtsi | 32 +++ drivers/gpio/gpio-aspeed-sgpio.c | 193 ++++++++++++------ 5 files changed, 250 insertions(+), 115 deletions(-) create mode 100644 Documentation/devicetree/bindings/gpio/aspeed,sgpio.yaml delete mode 100644 Documentation/devicetree/bindings/gpio/sgpio-aspeed.txt -- 2.17.1
