[PATCH RFC v2 2/3] dt-bindings: pinctrl: Add aspeed,ast2700-soc1-pinctrl

Billy Tsai
2026-03-06T12:54:26Z

SoC1 in the AST2700 integrates its own pin controller responsible for
pin multiplexing and pin configuration.

The controller manages various peripheral functions such as eSPI, LPC,
VPI, SD, UART, I2C, I3C, PWM and others through SCU registers.

The binding reuses the standard pinmux and generic pin configuration
schemas and does not introduce custom Devicetree properties.

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
---
.../pinctrl/aspeed,ast2700-soc1-pinctrl.yaml | 449 +++++++++++++++++++++
1 file changed, 449 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml
new file mode 100644
index 000000000000..be7e82b3e866
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml
@@ -0,0 +1,449 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASPEED AST2700 SoC1 Pin Controller
+
+maintainers:
+ - Billy Tsai <billy_tsai@aspeedtech.com>
+
+description:
+ The AST2700 features a dual-SoC architecture with two interconnected SoCs,
+ each having its own System Control Unit (SCU) for independent pin control.
+ This pin controller manages the pin multiplexing for SoC1.
+
+ The SoC1 pin controller manages pin functions including eSPI, LPC and I2C,
+ among others.
+
+properties:
+ compatible:
+ const: aspeed,ast2700-soc1-pinctrl
+
+patternProperties:
+ '-state$':
+ type: object
+ allOf:
+ - $ref: pinmux-node.yaml#
+ - $ref: pincfg-node.yaml#
+ additionalProperties: false
+
+ properties:
+ function:
+ enum:
+ - ADC0
+ - ADC1
+ - ADC10
+ - ADC11
+ - ADC12
+ - ADC13
+ - ADC14
+ - ADC15
+ - ADC2
+ - ADC3
+ - ADC4
+ - ADC5
+ - ADC6
+ - ADC7
+ - ADC8
+ - ADC9
+ - AUXPWRGOOD0
+ - AUXPWRGOOD1
+ - CANBUS
+ - DSGPM1
+ - ESPI0
+ - ESPI1
+ - FSI0
+ - FSI1
+ - FSI2
+ - FSI3
+ - FWQSPI
+ - FWSPIABR
+ - FWWPN
+ - HBLED
+ - I2C0
+ - I2C1
+ - I2C10
+ - I2C11
+ - I2C12
+ - I2C13
+ - I2C14
+ - I2C15
+ - I2C2
+ - I2C3
+ - I2C4
+ - I2C5
+ - I2C6
+ - I2C7
+ - I2C8
+ - I2C9
+ - I2CF0
+ - I2CF1
+ - I2CF2
+ - I3C0
+ - I3C1
+ - I3C10
+ - I3C11
+ - I3C12
+ - I3C13
+ - I3C14
+ - I3C15
+ - I3C2
+ - I3C3
+ - I3C4
+ - I3C5
+ - I3C6
+ - I3C7
+ - I3C8
+ - I3C9
+ - JTAGM1
+ - LPC0
+ - LPC1
+ - LTPI
+ - MACLINK0
+ - MACLINK1
+ - MACLINK2
+ - MDIO0
+ - MDIO1
+ - MDIO2
+ - OSCCLK
+ - PCIERC
+ - PWM0
+ - PWM1
+ - PWM10
+ - PWM11
+ - PWM12
+ - PWM13
+ - PWM14
+ - PWM15
+ - PWM2
+ - PWM3
+ - PWM4
+ - PWM5
+ - PWM6
+ - PWM7
+ - PWM8
+ - PWM9
+ - QSPI0
+ - QSPI1
+ - QSPI2
+ - RGMII0
+ - RGMII1
+ - RMII0
+ - RMII0RCKO
+ - RMII1
+ - RMII1RCKO
+ - SALT0
+ - SALT1
+ - SALT10
+ - SALT11
+ - SALT12
+ - SALT13
+ - SALT14
+ - SALT15
+ - SALT2
+ - SALT3
+ - SALT4
+ - SALT5
+ - SALT6
+ - SALT7
+ - SALT8
+ - SALT9
+ - SD
+ - SGMII
+ - SGPM0
+ - SGPM1
+ - SGPS
+ - SIOONCTRLN0
+ - SIOONCTRLN1
+ - SIOPBIN0
+ - SIOPBIN1
+ - SIOPBON0
+ - SIOPBON1
+ - SIOPWREQN0
+ - SIOPWREQN1
+ - SIOPWRGD1
+ - SIOS3N0
+ - SIOS3N1
+ - SIOS5N0
+ - SIOS5N1
+ - SIOSCIN0
+ - SIOSCIN1
+ - SMON0
+ - SMON1
+ - SPI0
+ - SPI0ABR
+ - SPI0CS1
+ - SPI0WPN
+ - SPI1
+ - SPI1ABR
+ - SPI1CS1
+ - SPI1WPN
+ - SPI2
+ - SPI2CS1
+ - TACH0
+ - TACH1
+ - TACH10
+ - TACH11
+ - TACH12
+ - TACH13
+ - TACH14
+ - TACH15
+ - TACH2
+ - TACH3
+ - TACH4
+ - TACH5
+ - TACH6
+ - TACH7
+ - TACH8
+ - TACH9
+ - THRU0
+ - THRU1
+ - THRU2
+ - THRU3
+ - UART0
+ - UART1
+ - UART10
+ - UART11
+ - UART2
+ - UART3
+ - UART5
+ - UART6
+ - UART7
+ - UART8
+ - UART9
+ - USB2C
+ - USB2D
+ - USBUART
+ - VGA
+ - VPI
+ - WDTRST0N
+ - WDTRST1N
+ - WDTRST2N
+ - WDTRST3N
+ - WDTRST4N
+ - WDTRST5N
+ - WDTRST6N
+ - WDTRST7N
+
+ groups:
+ enum:
+ - ADC0
+ - ADC1
+ - ADC10
+ - ADC11
+ - ADC12
+ - ADC13
+ - ADC14
+ - ADC15
+ - ADC2
+ - ADC3
+ - ADC4
+ - ADC5
+ - ADC6
+ - ADC7
+ - ADC8
+ - ADC9
+ - AUXPWRGOOD0
+ - AUXPWRGOOD1
+ - CANBUS
+ - DI2C0
+ - DI2C1
+ - DI2C10
+ - DI2C11
+ - DI2C12
+ - DI2C13
+ - DI2C14
+ - DI2C15
+ - DI2C2
+ - DI2C3
+ - DI2C8
+ - DI2C9
+ - DSGPM1
+ - ESPI0
+ - ESPI1
+ - FSI0
+ - FSI1
+ - FSI2
+ - FSI3
+ - FWQSPI
+ - FWSPIABR
+ - FWWPN
+ - HBLED
+ - HVI3C0
+ - HVI3C1
+ - HVI3C12
+ - HVI3C13
+ - HVI3C14
+ - HVI3C15
+ - HVI3C2
+ - HVI3C3
+ - I2C0
+ - I2C1
+ - I2C10
+ - I2C11
+ - I2C12
+ - I2C13
+ - I2C14
+ - I2C15
+ - I2C2
+ - I2C3
+ - I2C4
+ - I2C5
+ - I2C6
+ - I2C7
+ - I2C8
+ - I2C9
+ - I2CF0
+ - I2CF1
+ - I2CF2
+ - I3C10
+ - I3C11
+ - I3C4
+ - I3C5
+ - I3C6
+ - I3C7
+ - I3C8
+ - I3C9
+ - JTAGM1
+ - LPC0
+ - LPC1
+ - LTPI
+ - MACLINK0
+ - MACLINK1
+ - MACLINK2
+ - MDIO0
+ - MDIO1
+ - MDIO2
+ - OSCCLK
+ - PE2SGRSTN
+ - PWM0
+ - PWM1
+ - PWM10
+ - PWM11
+ - PWM12
+ - PWM13
+ - PWM14
+ - PWM15
+ - PWM2
+ - PWM3
+ - PWM4
+ - PWM5
+ - PWM6
+ - PWM7
+ - PWM8
+ - PWM9
+ - QSPI0
+ - QSPI1
+ - QSPI2
+ - RGMII0
+ - RGMII1
+ - RMII0
+ - RMII0RCKO
+ - RMII1
+ - RMII1RCKO
+ - SALT0
+ - SALT1
+ - SALT10
+ - SALT11
+ - SALT12
+ - SALT13
+ - SALT14
+ - SALT15
+ - SALT2
+ - SALT3
+ - SALT4
+ - SALT5
+ - SALT6
+ - SALT7
+ - SALT8
+ - SALT9
+ - SD
+ - SGMII
+ - SGPM0
+ - SGPM1
+ - SGPS
+ - SIOONCTRLN0
+ - SIOONCTRLN1
+ - SIOPBIN0
+ - SIOPBIN1
+ - SIOPBON0
+ - SIOPBON1
+ - SIOPWREQN0
+ - SIOPWREQN1
+ - SIOPWRGD1
+ - SIOS3N0
+ - SIOS3N1
+ - SIOS5N0
+ - SIOS5N1
+ - SIOSCIN0
+ - SIOSCIN1
+ - SMON0
+ - SMON1
+ - SPI0
+ - SPI0ABR
+ - SPI0CS1
+ - SPI0WPN
+ - SPI1
+ - SPI1ABR
+ - SPI1CS1
+ - SPI1WPN
+ - SPI2
+ - SPI2CS1
+ - TACH0
+ - TACH1
+ - TACH10
+ - TACH11
+ - TACH12
+ - TACH13
+ - TACH14
+ - TACH15
+ - TACH2
+ - TACH3
+ - TACH4
+ - TACH5
+ - TACH6
+ - TACH7
+ - TACH8
+ - TACH9
+ - THRU0
+ - THRU1
+ - THRU2
+ - THRU3
+ - UART0
+ - UART1
+ - UART10
+ - UART11
+ - UART2
+ - UART3
+ - UART5
+ - UART6
+ - UART7
+ - UART8
+ - UART9
+ - USB2CD
+ - USB2CH
+ - USB2CU
+ - USB2CUD
+ - USB2DD
+ - USB2DH
+ - USBUART
+ - VGA
+ - VPI
+ - WDTRST0N
+ - WDTRST1N
+ - WDTRST2N
+ - WDTRST3N
+ - WDTRST4N
+ - WDTRST5N
+ - WDTRST6N
+ - WDTRST7N
+
+required:
+ - compatible
+
+allOf:
+ - $ref: pinctrl.yaml#
+
+additionalProperties: false

--
2.34.1