[PATCH v3 1/2] dt-binding: pinctrl: Add NPCM8XX pinctrl and GPIO documentation
From: Tomer Maimon
Date: Wed Sep 21 2022 - 06:18:54 EST
Added device tree binding documentation for Nuvoton Arbel BMC NPCM8XX
pinmux and GPIO controller.
Signed-off-by: Tomer Maimon <tmaimon77@xxxxxxxxx>
---
.../pinctrl/nuvoton,npcm845-pinctrl.yaml | 213 ++++++++++++++++++
1 file changed, 213 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/nuvoton,npcm845-pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/nuvoton,npcm845-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/nuvoton,npcm845-pinctrl.yaml
new file mode 100644
index 000000000000..2e8bc9b22166
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/nuvoton,npcm845-pinctrl.yaml
@@ -0,0 +1,213 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/nuvoton,npcm845-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton NPCM845 Pin Controller and GPIO
+
+maintainers:
+ - Tomer Maimon <tmaimon77@xxxxxxxxx>
+
+description:
+ The Nuvoton BMC NPCM8XX Pin Controller multi-function routed through
+ the multiplexing block, Each pin supports GPIO functionality (GPIOx)
+ and multiple functions that directly connect the pin to different
+ hardware blocks.
+
+properties:
+ compatible:
+ const: nuvoton,npcm845-pinctrl
+
+ ranges:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 1
+
+ nuvoton,sysgcr:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: a phandle to access GCR registers.
+
+patternProperties:
+ "^gpio@":
+ type: object
+
+ description:
+ Eight GPIO banks that each contain 32 GPIOs.
+
+ properties:
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ gpio-ranges:
+ maxItems: 1
+
+ required:
+ - gpio-controller
+ - '#gpio-cells'
+ - reg
+ - interrupts
+ - gpio-ranges
+
+ "-mux":
+ $ref: pinmux-node.yaml#
+
+ properties:
+ groups:
+ description:
+ One or more groups of pins to mux to a certain function
+ items:
+ enum: [ iox1, iox2, smb1d, smb2d, lkgpo1, lkgpo2, ioxh, gspi,
+ smb5b, smb5c, lkgpo0, pspi2, jm1, jm2, smb4den, smb4b,
+ smb4c, smb15, smb16, smb17, smb18, smb19, smb20, smb21,
+ smb22, smb23, smb4d, smb14, smb5, smb4, smb3, spi0cs1,
+ spi0cs2, spi0cs3, smb3c, smb3b, bmcuart0a, uart1, jtag2,
+ bmcuart1, uart2, bmcuart0b, r1err, r1md, r1oen, r2oen,
+ rmii3, r3oen, smb3d, fanin0, fanin1, fanin2, fanin3, fanin4,
+ fanin5, fanin6, fanin7, fanin8, fanin9, fanin10, fanin11,
+ fanin12, fanin13, fanin14, fanin15, pwm0, pwm1, pwm2, pwm3,
+ r2, r2err, r2md, r3rxer, ga20kbc, smb5d, lpc, espi, rg1,
+ rg1mdio, rg2, ddr, i3c0, i3c1, i3c2, i3c3, i3c4, i3c5,
+ smb0, smb1, smb2, smb2c, smb2b, smb1c, smb1b, smb8, smb9,
+ smb10, smb11, sd1, sd1pwr, pwm4, pwm5, pwm6, pwm7, pwm8,
+ pwm9, pwm10, pwm11, mmc8, mmc, mmcwp, mmccd, mmcrst, clkout,
+ serirq, lpcclk, scipme, sci, smb6, smb7, spi1, faninx, r1,
+ spi3, spi3cs1, spi3quad, spi3cs2, spi3cs3, nprd_smi, smb0b,
+ smb0c, smb0den, smb0d, ddc, rg2mdio, wdog1, wdog2, smb12,
+ smb13, spix, spixcs1, clkreq, hgpio0, hgpio1, hgpio2, hgpio3,
+ hgpio4, hgpio5, hgpio6, hgpio7 ]
+
+ function:
+ description:
+ The function that a group of pins is muxed to
+ enum: [ iox1, iox2, smb1d, smb2d, lkgpo1, lkgpo2, ioxh, gspi,
+ smb5b, smb5c, lkgpo0, pspi2, jm1, jm2, smb4den, smb4b,
+ smb4c, smb15, smb16, smb17, smb18, smb19, smb20, smb21,
+ smb22, smb23, smb4d, smb14, smb5, smb4, smb3, spi0cs1,
+ spi0cs2, spi0cs3, smb3c, smb3b, bmcuart0a, uart1, jtag2,
+ bmcuart1, uart2, bmcuart0b, r1err, r1md, r1oen, r2oen,
+ rmii3, r3oen, smb3d, fanin0, fanin1, fanin2, fanin3, fanin4,
+ fanin5, fanin6, fanin7, fanin8, fanin9, fanin10, fanin11,
+ fanin12, fanin13, fanin14, fanin15, pwm0, pwm1, pwm2, pwm3,
+ r2, r2err, r2md, r3rxer, ga20kbc, smb5d, lpc, espi, rg1,
+ rg1mdio, rg2, ddr, i3c0, i3c1, i3c2, i3c3, i3c4, i3c5,
+ smb0, smb1, smb2, smb2c, smb2b, smb1c, smb1b, smb8, smb9,
+ smb10, smb11, sd1, sd1pwr, pwm4, pwm5, pwm6, pwm7, pwm8,
+ pwm9, pwm10, pwm11, mmc8, mmc, mmcwp, mmccd, mmcrst, clkout,
+ serirq, lpcclk, scipme, sci, smb6, smb7, spi1, faninx, r1,
+ spi3, spi3cs1, spi3quad, spi3cs2, spi3cs3, nprd_smi, smb0b,
+ smb0c, smb0den, smb0d, ddc, rg2mdio, wdog1, wdog2, smb12,
+ smb13, spix, spixcs1, clkreq, hgpio0, hgpio1, hgpio2, hgpio3,
+ hgpio4, hgpio5, hgpio6, hgpio7 ]
+
+ dependencies:
+ groups: [ function ]
+ function: [ groups ]
+
+ additionalProperties: false
+
+ "^pin":
+ $ref: pincfg-node.yaml#
+
+ properties:
+ pins:
+ description:
+ A list of pins to configure in certain ways, such as enabling
+ debouncing
+
+ bias-disable: true
+
+ bias-pull-up: true
+
+ bias-pull-down: true
+
+ input-enable: true
+
+ output-low: true
+
+ output-high: true
+
+ drive-push-pull: true
+
+ drive-open-drain: true
+
+ input-debounce:
+ description:
+ Debouncing periods in microseconds, one period per interrupt
+ bank found in the controller
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ maxItems: 4
+
+ slew-rate:
+ description: |
+ 0: Low rate
+ 1: High rate
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1]
+
+ drive-strength:
+ enum: [ 0, 1, 2, 4, 8, 12 ]
+
+ additionalProperties: false
+
+allOf:
+ - $ref: "pinctrl.yaml#"
+
+required:
+ - compatible
+ - ranges
+ - '#address-cells'
+ - '#size-cells'
+ - nuvoton,sysgcr
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/gpio/gpio.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pinctrl: pinctrl@f0800000 {
+ compatible = "nuvoton,npcm845-pinctrl";
+ ranges = <0x0 0x0 0xf0010000 0x8000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ nuvoton,sysgcr = <&gcr>;
+
+ gpio0: gpio@f0010000 {
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x0 0xB0>;
+ interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-ranges = <&pinctrl 0 0 32>;
+ };
+
+ fanin0_pin: fanin0-mux {
+ groups = "fanin0";
+ function = "fanin0";
+ };
+
+ pin34_slew: pin34-slew {
+ pins = "GPIO34/I3C4_SDA";
+ bias-disable;
+ };
+ };
+ };
+
--
2.33.0