On Thu, Aug 24, 2023 at 06:57:01PM +0800, Tzuyi Chang wrote: > 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: Drop the if/then. "-pins" should always be a node (object). > + 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 >
