# 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#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Realtek DHC RTD1619B Pin Controller
maintainers:
- TY Chang <[email protected]>
description:
The Realtek DHC RTD1619B is a high-definition media processor SoC. The
RTD1619B pin controller is used to control pin function, pull up/down
resistor, drive strength, schmitt trigger and power source.
properties:
compatible:
const: realtek,rtd1619b-pinctrl
reg:
maxItems: 1
patternProperties:
'-pins$':
type: object
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>;
};
};
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