Add device tree bindings for RTD1315E. Signed-off-by: Tzuyi Chang <tychang@xxxxxxxxxxx> --- v1 to v2 change: 1. Add a description for RTD1315E. 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$' to be node name pattern. --- .../pinctrl/realtek,rtd1315e-pinctrl.yaml | 191 ++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml diff --git a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml new file mode 100644 index 000000000000..babd87d05f32 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml @@ -0,0 +1,191 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2023 Realtek Semiconductor Corporation +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/realtek,rtd1315e-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Realtek DHC RTD1315E Pin Controller + +maintainers: + - TY Chang <tychang@xxxxxxxxxxx> + +description: + The Realtek DHC RTD1315E is a high-definition media processor SoC. The + RTD1315E pin controller is used to control pin function, pull up/down + resistor, drive strength, schmitt trigger and power source. + +properties: + compatible: + const: realtek,rtd1315e-pinctrl + + reg: + maxItems: 1 + +patternProperties: + '-pins$': + if: + type: object + then: + allOf: + - $ref: pincfg-node.yaml# + - $ref: pinmux-node.yaml# + + properties: + pins: + items: + enum: [ gpio_0, gpio_1, emmc_rst_n, emmc_dd_sb, emmc_clk, emmc_cmd, + 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, emmc_data_0, emmc_data_1, emmc_data_2, 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_dummy_40, gpio_dummy_41, gpio_dummy_42, gpio_dummy_43, + gpio_dummy_44, gpio_dummy_45, gpio_46, gpio_47, gpio_48, gpio_49, + gpio_50, usb_cc1, emmc_data_3, emmc_data_4, ir_rx, ur0_rx, ur0_tx, + gpio_57, gpio_58, gpio_59, gpio_60, gpio_61, gpio_62, gpio_dummy_63, + gpio_dummy_64, gpio_dummy_65, gpio_66, gpio_67, gpio_68, gpio_69, + gpio_70, gpio_71, gpio_72, gpio_dummy_73, emmc_data_5, emmc_data_6, + emmc_data_7, gpio_dummy_77, gpio_78, gpio_79, gpio_80, gpio_81, + ur2_loc, gspi_loc, hi_width, sf_en, arm_trace_dbg_en, + ejtag_aucpu_loc, ejtag_acpu_loc, ejtag_vcpu_loc, ejtag_scpu_loc, + dmic_loc, vtc_dmic_loc, vtc_tdm_loc, vtc_i2si_loc, tdm_ai_loc, + ai_loc, spdif_loc, hif_en_loc, scan_switch, wd_rset, boot_sel, + reset_n, testmode ] + + function: + enum: [ gpio, nf, emmc, ao, gspi_loc0, gspi_loc1, uart0, uart1, + uart2_loc0, uart2_loc1, i2c0, i2c1, i2c4, i2c5, pcie1, + etn_led, etn_phy, spi, pwm0_loc0, pwm0_loc1, pwm1_loc0, + pwm1_loc1, pwm2_loc0, pwm2_loc1, pwm3_loc0, pwm3_loc1, + spdif_optical_loc0, spdif_optical_loc1, usb_cc1, usb_cc2, + sd, dmic_loc0, dmic_loc1, ai_loc0, ai_loc1, tdm_ai_loc0, + tdm_ai_loc1, hi_loc0, hi_m, vtc_i2so, vtc_i2si_loc0, + vtc_i2si_loc1, vtc_dmic_loc0, vtc_dmic_loc1, vtc_tdm_loc0, + vtc_tdm_loc1, dc_fan, pll_test_loc0, pll_test_loc1, + ir_rx, uart2_disable, gspi_disable, hi_width_disable, + hi_width_1bit, sf_disable, sf_enable, scpu_ejtag_loc0, + scpu_ejtag_loc1, scpu_ejtag_loc2, scpu_ejtag_loc3, + acpu_ejtag_loc0, acpu_ejtag_loc1, acpu_ejtag_loc2, + vcpu_ejtag_loc0, vcpu_ejtag_loc1, vcpu_ejtag_loc2, + aucpu_ejtag_loc0, aucpu_ejtag_loc1, aucpu_ejtag_loc2, + gpu_ejtag, iso_tristate, dbg_out0, dbg_out1, standby_dbg, + spdif, arm_trace_debug_disable, arm_trace_debug_enable, + aucpu_ejtag_disable, acpu_ejtag_disable, vcpu_ejtag_disable, + scpu_ejtag_disable, vtc_dmic_loc_disable, vtc_tdm_disable, + vtc_i2si_disable, tdm_ai_disable, ai_disable, spdif_disable, + hif_disable, hif_enable, test_loop, pmic_pwrup ] + + + 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,rtd1315e-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
