From: Yulin Lu Date: Thu, 12 Jun 2025 10:48:11 +0000 (+0800) Subject: dt-bindings: pinctrl: eswin: Document for EIC7700 SoC X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0a11110bfc5a95ee0416f76500ba0655f62d2baa;p=thirdparty%2Fkernel%2Flinux.git dt-bindings: pinctrl: eswin: Document for EIC7700 SoC Add EIC7700 pinctrl device for all configurable pins. For the EIC7700 pinctrl registers, each register (32 bits) controls the characteristics of a single pin. It supports setting function multiplexing, Schmitt trigger, drive strength, pull-up/pull-down, and input enable. Co-developed-by: Samuel Holland Signed-off-by: Samuel Holland Signed-off-by: Yulin Lu Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/20250612104811.1206-1-luyulin@eswincomputing.com Signed-off-by: Linus Walleij --- 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 0000000000000..d46e7ee6372d0 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/eswin,eic7700-pinctrl.yaml @@ -0,0 +1,156 @@ +# 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 Pinctrl + +maintainers: + - Yulin Lu + +allOf: + - $ref: pinctrl.yaml# + +description: | + eic7700 pin configuration nodes act as a container for an arbitrary number of + subnodes. Each of these subnodes represents some desired configuration for one or + more pins. This configuration can include the mux function to select on those pin(s), + and various pin configuration parameters, such as input-enable, pull-up, etc. + +properties: + compatible: + const: eswin,eic7700-pinctrl + + reg: + maxItems: 1 + + vrgmii-supply: + description: + Regulator supply for the RGMII interface IO power domain. + This property should reference a regulator that provides either 1.8V or 3.3V, + depending on the board-level voltage configuration required by the RGMII interface. + +patternProperties: + '-grp$': + type: object + additionalProperties: false + + patternProperties: + '-pins$': + type: object + + properties: + pins: + description: + For eic7700, specifies the name(s) of one or more pins to be configured by + this node. + items: + enum: [ chip_mode, mode_set0, mode_set1, mode_set2, mode_set3, 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, + rgmii1_rxdv, rgmii1_rxd0, rgmii1_rxd1, rgmii1_rxd2, rgmii1_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 ] + + function: + description: + Specify the alternative function to be configured for the + given pins. + enum: [ disabled, boot_sel, chip_mode, emmc, fan_tach, + gpio, hdmi, i2c, i2s, jtag, ddr_ref_clk_sel, + lpddr_ref_clk, mipi_csi, osc, pcie, pwm, + rgmii, reset, sata, sdio, spi, s_mode, uart, usb ] + + input-schmitt-enable: true + + input-schmitt-disable: true + + bias-disable: true + + bias-pull-down: true + + bias-pull-up: true + + input-enable: true + + input-disable: true + + drive-strength-microamp: true + + required: + - pins + + additionalProperties: false + + allOf: + - $ref: pincfg-node.yaml# + - $ref: pinmux-node.yaml# + + - if: + properties: + pins: + anyOf: + - pattern: '^rgmii' + - const: lpddr_ref_clk + then: + properties: + drive-strength-microamp: + enum: [3000, 6000, 9000, 12000, 15000, 18000, 21000, 24000] + else: + properties: + drive-strength-microamp: + enum: [6000, 9000, 12000, 15000, 18000, 21000, 24000, 27000] + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + pinctrl@51600080 { + compatible = "eswin,eic7700-pinctrl"; + reg = <0x51600080 0x1fff80>; + vrgmii-supply = <&vcc_1v8>; + + dev-active-grp { + /* group node defining 1 standard pin */ + gpio10-pins { + pins = "jtag1_tdo"; + function = "gpio"; + input-enable; + bias-pull-up; + }; + + /* group node defining 2 I2C pins */ + i2c6-pins { + pins = "uart1_cts", "uart1_rts"; + function = "i2c"; + }; + }; + };