Re: [RFC PATCH 1/4] dt-bindings: pinctrl: Add eswin,eic7700-pinctrl binding

From: Yixun Lan
Date: Tue Mar 25 2025 - 20:45:03 EST

Hi Emil Renner Berthing:

On 15:13 Tue 25 Mar , Emil Renner Berthing wrote:
> Add device tree binding for the pin controller on the ESWIN EIC7700
> RISC-V SoC.
>
> Signed-off-by: Emil Renner Berthing <emil.renner.berthing@xxxxxxxxxxxxx>
> ---
> .../pinctrl/eswin,eic7700-pinctrl.yaml | 141 ++++++++++++++++++
> 1 file changed, 141 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pinctrl/eswin,eic7700-pinctrl.yaml
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/eswin,eic7700-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/eswin,eic7700-pinctrl.yaml
> new file mode 100644
> index 000000000000..8ef966cebc5e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/eswin,eic7700-pinctrl.yaml
> @@ -0,0 +1,141 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/eswin,eic7700-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ESWIN EIC7700 SoC pin controller
> +
> +maintainers:
> + - Emil Renner Berthing <emil.renner.berthing@xxxxxxxxxxxxx>
> +
> +description: |
no need |
> + Pinmux and pinconf controller in the ESWIN EIC7700 RISC-V SoC.
> +
> +properties:
> + compatible:
> + enum:
> + - eswin,eic7700-pinctrl
why not const as single compatible here?
> + reg:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> +
> +patternProperties:
> + '-[0-9]+$':
> + type: object
> + additionalProperties: false
> +
> + patternProperties:
> + '-pins$':
> + type: object
> + allOf:
> + - $ref: /schemas/pinctrl/pincfg-node.yaml#
> + - $ref: /schemas/pinctrl/pinmux-node.yaml#
> +
> + additionalProperties: false
> +
> + description:
> + A pinctrl node should contain at least one subnode describing one
> + or more pads and their associated pinmux and pinconf settings.
> +
> + properties:
> + pins:
> + items:
> + enum: [ CHIP_MODE, MODE_SET0, MODE_SET1, MODE_SET2, MODE_SET3,
> + XIN, RTC_XIN, RST_OUT_N, KEY_RESET_N, GPIO0, POR_SEL,
> + JTAG0_TCK, JTAG0_TMS, JTAG0_TDI, JTAG0_TDO, GPIO5, SPI2_CS0_N,
> + JTAG1_TCK, JTAG1_TMS, JTAG1_TDI, JTAG1_TDO, GPIO11, SPI2_CS1_N,
> + PCIE_CLKREQ_N, PCIE_WAKE_N, PCIE_PERST_N, HDMI_SCL, HDMI_SDA,
> + HDMI_CEC, JTAG2_TRST, RGMII0_CLK_125, RGMII0_TXEN,
> + RGMII0_TXCLK, RGMII0_TXD0, RGMII0_TXD1, RGMII0_TXD2,
> + RGMII0_TXD3, I2S0_BCLK, I2S0_WCLK, I2S0_SDI, I2S0_SDO,
> + I2S_MCLK, RGMII0_RXCLK, RGMII0_RXDV, RGMII0_RXD0, RGMII0_RXD1,
> + RGMII0_RXD2, RGMII0_RXD3, I2S2_BCLK, I2S2_WCLK, I2S2_SDI,
> + I2S2_SDO, GPIO27, GPIO28, GPIO29, RGMII0_MDC, RGMII0_MDIO,
> + RGMII0_INTB, RGMII1_CLK_125, RGMII1_TXEN, RGMII1_TXCLK,
> + RGMII1_TXD0, RGMII1_TXD1, RGMII1_TXD2, RGMII1_TXD3, I2S1_BCLK,
> + I2S1_WCLK, I2S1_SDI, I2S1_SDO, GPIO34, RGMII1_RXCLK,
> + RGMII2_RXDV, RGMII2_RXD0, RGMII2_RXD1, RGMII2_RXD2,
> + RGMII2_RXD3, SPI1_CS0_N, SPI1_CLK, SPI1_D0, SPI1_D1, SPI1_D2,
> + SPI1_D3, SPI1_CS1_N, RGMII1_MDC, RGMII1_MDIO, RGMII1_INTB,
> + USB0_PWREN, USB1_PWREN, I2C0_SCL, I2C0_SDA, I2C1_SCL, I2C1_SDA,
> + I2C2_SCL, I2C2_SDA, I2C3_SCL, I2C3_SDA, I2C4_SCL, I2C4_SDA,
> + I2C5_SCL, I2C5_SDA, UART0_TX, UART0_RX, UART1_TX, UART1_RX,
> + UART1_CTS, UART1_RTS, UART2_TX, UART2_RX, JTAG2_TCK, JTAG2_TMS,
> + JTAG2_TDI, JTAG2_TDO, FAN_PWM, FAN_TACH, MIPI_CSI0_XVS,
> + MIPI_CSI0_XHS, MIPI_CSI0_MCLK, MIPI_CSI1_XVS, MIPI_CSI1_XHS,
> + MIPI_CSI1_MCLK, MIPI_CSI2_XVS, MIPI_CSI2_XHS, MIPI_CSI2_MCLK,
> + MIPI_CSI3_XVS, MIPI_CSI3_XHS, MIPI_CSI3_MCLK, MIPI_CSI4_XVS,
> + MIPI_CSI4_XHS, MIPI_CSI4_MCLK, MIPI_CSI5_XVS, MIPI_CSI5_XHS,
> + MIPI_CSI5_MCLK, SPI3_CS_N, SPI3_CLK, SPI3_DI, SPI3_DO, GPIO92,
> + GPIO93, S_MODE, GPIO95, SPI0_CS_N, SPI0_CLK, SPI0_D0, SPI0_D1,
> + SPI0_D2, SPI0_D3, I2C10_SCL, I2C10_SDA, I2C11_SCL, I2C11_SDA,
> + GPIO106, BOOT_SEL0, BOOT_SEL1, BOOT_SEL2, BOOT_SEL3, GPIO111,
> + LPDDR_REF_CLK ]
> + description: List of pads that properties in the node apply to.
> +
> + function:
> + enum: [ csi, debug, ddr, fan, gpio, hdmi, i2c, i2s, jtag, mipi,
> + mode, oscillator, pci, pwm, rgmii, reset, sata, spi, sdio,
> + uart, usb ]
> + description: The mux function to select for the given pins.
> +
> + bias-disable: true
> +
> + bias-pull-up:
> + oneOf:
> + - type: boolean
> + - const: 25000
> + description: Enable internal 25kOhm pull-up
> +
> + bias-pull-down:
> + oneOf:
> + - type: boolean
> + - const: 22000
> + description: Enable internal 22kOhm pull-down
> +
> + drive-strength-microamp:
> + enum: [ 3100, 6700, 9600, 12900, 18000, 20900, 23200, 25900 ]
> +
> + input-enable: true
> +
> + input-disable: true
> +
> + input-schmitt-enable: true
> +
> + input-schmitt-disable: true
> +
> + required:
> + - pins
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + pinctrl: pinctrl@51600080 {
~~~~~~~ no need alias phandle in example..
> + compatible = "eswin,eic7700-pinctrl";
> + reg = <0x51600080 0xff80>;
> +
> + uart0_pins: uart0-0 {
> + tx-pins {
> + pins = "UART0_TX";
> + function = "uart";
> + bias-disable;
> + drive-strength-microamp = <6700>;
> + input-disable;
> + input-schmitt-disable;
> + };
> +
> + rx-pins {
> + pins = "UART0_RX";
> + function = "uart";
> + bias-pull-up;
> + drive-strength-microamp = <6700>;
> + input-enable;
> + input-schmitt-enable;
> + };
> + };
> + };
> --
> 2.43.0
>

--
Yixun Lan (dlan)
Gentoo Linux Developer
GPG Key ID AABEFD55