Add device tree bindings for RTD1619B. Signed-off-by: Tzuyi Chang <tychang@xxxxxxxxxxx> --- v1 to v2 change: 1. Add a description for RTD1619B. 2. Rename realtek,pdrive, realtekmndrive and realtek,dcycle. 3. Add a description for PMOS and NMOS driving strength. 4. Remove the wildcard in the compatible strings. 5. Use '-pins$' to be node name pattern. --- .../pinctrl/realtek,rtd1619b-pinctrl.yaml | 188 ++++++++++++++++++ 1 file changed, 188 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml diff --git a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml new file mode 100644 index 000000000000..e0c38f714a0d --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml @@ -0,0 +1,188 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2023 Realtek Semiconductor Corporation +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/realtek,rtd1619b-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Realtek DHC RTD1619B Pin Controller + +maintainers: + - TY Chang <tychang@xxxxxxxxxxx> + +description: + The Realtek DHC RTD1619B is a high-definition media processor SoC. The + RTD1619B pin controller is used to control pin function, pull up/down + resistor, drive strength, schmitt trigger and power source. + +properties: + compatible: + const: realtek,rtd1619b-pinctrl + + reg: + maxItems: 1 + +patternProperties: + '^.*$': + if: + type: object + then: + allOf: + - $ref: pincfg-node.yaml# + - $ref: pinmux-node.yaml# + + properties: + pins: + items: + enum: [ gpio_0, gpio_1, gpio_2, gpio_3, gpio_4, gpio_5, gpio_6, gpio_7, + gpio_8, gpio_9, gpio_10, gpio_11, gpio_12, gpio_13, gpio_14, + gpio_15, gpio_16, gpio_17, gpio_18, gpio_19, gpio_20, gpio_21, + gpio_22, gpio_23, usb_cc2, gpio_25, gpio_26, gpio_27, gpio_28, + gpio_29, gpio_30, gpio_31, gpio_32, gpio_33, gpio_34, gpio_35, + hif_data, hif_en, hif_rdy, hif_clk, gpio_40, gpio_41, gpio_42, + gpio_43, gpio_44, gpio_45, gpio_46, gpio_47, gpio_48, gpio_49, + gpio_50, usb_cc1, gpio_52, gpio_53, ir_rx, ur0_rx, ur0_tx, + gpio_57, gpio_58, gpio_59, gpio_60, gpio_61, gpio_62, gpio_63, + gpio_64, gpio_65, gpio_66, gpio_67, gpio_68, gpio_69, gpio_70, + gpio_71, gpio_72, gpio_73, gpio_74, gpio_75, gpio_76, emmc_cmd, + spi_ce_n, spi_sck, spi_so, spi_si, emmc_rst_n, emmc_dd_sb, + emmc_clk, emmc_data_0, emmc_data_1, emmc_data_2, emmc_data_3, + emmc_data_4, emmc_data_5, emmc_data_6, emmc_data_7, ur2_loc, + gspi_loc, sdio_loc, hi_loc, hi_width, sf_en, arm_trace_dbg_en, + pwm_01_open_drain_en_loc0, pwm_23_open_drain_en_loc0, + pwm_01_open_drain_en_loc1, pwm_23_open_drain_en_loc1, + ejtag_acpu_loc, ejtag_vcpu_loc, ejtag_scpu_loc, dmic_loc, + iso_gspi_loc, ejtag_ve3_loc, ejtag_aucpu0_loc, ejtag_aucpu1_loc ] + + function: + enum: [ gpio, nf, nf_spi, spi, pmic, spdif, spdif_coaxial, spdif_optical_loc0, + spdif_optical_loc1, emmc_spi, emmc, sc1, uart0, uart1, uart2_loc0, uart2_loc1, + gspi_loc1, iso_gspi_loc1, i2c0, i2c1, i2c3, i2c4, i2c5, pwm0, pwm1, pwm2, + pwm3, etn_led, etn_phy, etn_clk, sc0, vfd, gspi_loc0, iso_gspi_loc0, pcie1, + pcie2, sd, sdio_loc0, sdio_loc1, hi, hi_m, dc_fan, pll_test_loc0, pll_test_loc1, + usb_cc1, usb_cc2, ir_rx, tdm_ai_loc0, tdm_ai_loc1, dmic_loc0, dmic_loc1, + ai_loc0, ai_loc1, tp0, tp1, ao, uart2_disable, gspi_disable, sdio_disable, + hi_loc_disable, hi_loc0, hi_width_disable, hi_width_1bit, vtc_i2si_loc0, + vtc_tdm_loc0, vtc_dmic_loc0, vtc_i2si_loc1, vtc_tdm_loc1, vtc_dmic_loc1, + vtc_i2so, ve3_ejtag_loc0, aucpu0_ejtag_loc0, aucpu1_ejtag_loc0, ve3_ejtag_loc1, + aucpu0_ejtag_loc1, aucpu1_ejtag_loc1, ve3_ejtag_loc2, aucpu0_ejtag_loc2, + aucpu1_ejtag_loc2, scpu_ejtag_loc0, acpu_ejtag_loc0, vcpu_ejtag_loc0, + scpu_ejtag_loc1, acpu_ejtag_loc1, vcpu_ejtag_loc1, scpu_ejtag_loc2, + acpu_ejtag_loc2, vcpu_ejtag_loc2, ve3_ejtag_disable, aucpu0_ejtag_disable, + aucpu1_ejtag_disable, acpu_ejtag_disable, vcpu_ejtag_disable, + scpu_ejtag_disable, iso_gspi_disable, sf_disable, sf_enable, + arm_trace_debug_disable, arm_trace_debug_enable, pwm_normal, pwm_open_drain, + standby_dbg, test_loop_dis ] + + drive-strength: + enum: [4, 8] + + bias-pull-down: true + + bias-pull-up: true + + bias-disable: true + + input-schmitt-enable: true + + input-schmitt-disable: true + + drive-push-pull: true + + power-source: + description: | + Valid arguments are described as below: + 0: power supply of 1.8V + 1: power supply of 3.3V + enum: [0, 1] + + realtek,drive-strength-p: + description: | + Some of pins can be driven using the P-MOS and N-MOS transistor to + achieve finer adjustments. The block-diagram representation is as + follows: + VDD + | + ||--+ + +-----o|| P-MOS-FET + | ||--+ + IN --+ +----- out + | ||--+ + +------|| N-MOS-FET + ||--+ + | + GND + The driving strength of the P-MOS/N-MOS transistors impacts the + waveform's rise/fall times. Greater driving strength results in + shorter rise/fall times. Each P-MOS and N-MOS transistor offers + 8 configurable levels (0 to 7), with higher values indicating + greater driving strength, contributing to achieving the desired + speed. + + The realtek,drive-strength-p is used to control the driving strength + of the P-MOS output. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 7 + + realtek,drive-strength-n: + description: | + Similar to the realtek,drive-strength-p, the realtek,drive-strength-n + is used to control the driving strength of the N-MOS output. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 7 + + realtek,duty-cycle: + description: | + An integer describing the level to adjust output duty cycle, controlling + the proportion of positive and negative waveforms in nanoseconds. + Valid arguments are described as below: + 0: 0ns + 2: + 0.25ns + 3: + 0.5ns + 4: -0.25ns + 5: -0.5ns + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 0, 2, 3, 4, 5 ] + + required: + - pins + + additionalProperties: false + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + pinctrl@4e000 { + compatible = "realtek,rtd1619b-pinctrl"; + reg = <0x4e000 0x130>; + + emmc-hs200-pins { + pins = "emmc_clk", + "emmc_cmd", + "emmc_data_0", + "emmc_data_1", + "emmc_data_2", + "emmc_data_3", + "emmc_data_4", + "emmc_data_5", + "emmc_data_6", + "emmc_data_7"; + function = "emmc"; + realtek,drive-strength-p = <0x2>; + realtek,drive-strength-n = <0x2>; + }; + + i2c-0-pins { + pins = "gpio_12", + "gpio_13"; + function = "i2c0"; + drive-strength = <4>; + }; + }; -- 2.41.0
