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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
commit | 50ba0232fd5312410f1b65247e774244f89a628e (patch) | |
tree | fd8f2fc78e9e548af0ff9590276602ee6125be00 /Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml | |
parent | Releasing progress-linux version 6.7.12-1~progress7.99u1. (diff) | |
download | linux-50ba0232fd5312410f1b65247e774244f89a628e.tar.xz linux-50ba0232fd5312410f1b65247e774244f89a628e.zip |
Merging upstream version 6.8.9.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml b/Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml new file mode 100644 index 0000000000..9e32e54aeb --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/nuvoton,sgpio.yaml @@ -0,0 +1,87 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/nuvoton,sgpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton SGPIO controller + +maintainers: + - Jim LIU <JJLIU0@nuvoton.com> + +description: | + This SGPIO controller is for NUVOTON NPCM7xx and NPCM8xx SoC and detailed + information is in the NPCM7XX/8XX SERIAL I/O EXPANSION INTERFACE section. + Nuvoton NPCM7xx SGPIO module is combines a serial to parallel IC (HC595) + and a parallel to serial IC (HC165). + Clock is a division of the APB3 clock. + This interface has 4 pins (D_out , D_in, S_CLK, LDSH). + NPCM7xx/NPCM8xx have two sgpio modules. Each module can support up + to 64 output pins, and up to 64 input pins, the pin is only for GPI or GPO. + GPIO pins can be programmed to support the following options + - Support interrupt option for each input port and various interrupt + sensitivity options (level-high, level-low, edge-high, edge-low) + - ngpios is number of nuvoton,input-ngpios GPIO lines and nuvoton,output-ngpios GPIO lines. + nuvoton,input-ngpios GPIO lines is only for GPI. + nuvoton,output-ngpios GPIO lines is only for GPO. + +properties: + compatible: + enum: + - nuvoton,npcm750-sgpio + - nuvoton,npcm845-sgpio + + reg: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + const: 2 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + nuvoton,input-ngpios: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The numbers of GPIO's exposed. GPIO lines are only for GPI. + minimum: 0 + maximum: 64 + + nuvoton,output-ngpios: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The numbers of GPIO's exposed. GPIO lines are only for GPO. + minimum: 0 + maximum: 64 + +required: + - compatible + - reg + - gpio-controller + - '#gpio-cells' + - interrupts + - nuvoton,input-ngpios + - nuvoton,output-ngpios + - clocks + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/nuvoton,npcm7xx-clock.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + gpio8: gpio@101000 { + compatible = "nuvoton,npcm750-sgpio"; + reg = <0x101000 0x200>; + clocks = <&clk NPCM7XX_CLK_APB3>; + interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>; + gpio-controller; + #gpio-cells = <2>; + nuvoton,input-ngpios = <64>; + nuvoton,output-ngpios = <64>; + }; |