Add pinctrl driver support for Realtek DHC SoCs

index 57d57af1f624..9f79ce1bb621 100644
@@ -531,6 +531,7 @@ source "drivers/pinctrl/nuvoton/Kconfig"
 source "drivers/pinctrl/nxp/Kconfig"
 source "drivers/pinctrl/pxa/Kconfig"
 source "drivers/pinctrl/qcom/Kconfig"
+source "drivers/pinctrl/realtek/Kconfig"
 source "drivers/pinctrl/renesas/Kconfig"
 source "drivers/pinctrl/samsung/Kconfig"
 source "drivers/pinctrl/spear/Kconfig"

index 482b391b5deb..beea6ac8b49e 100644
@@ -67,6 +67,7 @@ obj-y				+= nuvoton/
 obj-y				+= nxp/
 obj-$(CONFIG_PINCTRL_PXA)	+= pxa/
 obj-y				+= qcom/
+obj-$(CONFIG_ARCH_REALTEK)      += realtek/
 obj-$(CONFIG_PINCTRL_RENESAS)	+= renesas/
 obj-$(CONFIG_PINCTRL_SAMSUNG)	+= samsung/
 obj-$(CONFIG_PINCTRL_SPEAR)	+= spear/

new file mode 100644
index 000000000000..d92aad885a81
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+config PINCTRL_RTD
+	tristate "Realtek DHC core pin controller driver"
+	depends on ARCH_REALTEK
+	default y
+	select PINMUX
+	select GENERIC_PINCONF

new file mode 100644
index 000000000000..be2c65b26115
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Realtek DHC pin control drivers
+obj-$(CONFIG_PINCTRL_RTD)		+= pinctrl-rtd.o

index d92aad885a81..2807e01275b5 100644
@@ -6,3 +6,8 @@ config PINCTRL_RTD
 	default y
 	select PINMUX
 	select GENERIC_PINCONF
+
+config PINCTRL_RTD1315E
+	tristate "Realtek DHC 1315E pin controller driver"
+	depends on PINCTRL_RTD
+	default y

index be2c65b26115..c71e540835c7 100644
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # Realtek DHC pin control drivers
 obj-$(CONFIG_PINCTRL_RTD)		+= pinctrl-rtd.o
+obj-$(CONFIG_PINCTRL_RTD1315E)		+= pinctrl-rtd1315e.o

index 2807e01275b5..e0259e120c1b 100644
@@ -7,6 +7,11 @@ config PINCTRL_RTD
 	select PINMUX
 	select GENERIC_PINCONF
 
+config PINCTRL_RTD1319D
+	tristate "Realtek DHC 1319D pin controller driver"
+	depends on PINCTRL_RTD
+	default y
+
 config PINCTRL_RTD1315E
 	tristate "Realtek DHC 1315E pin controller driver"
 	depends on PINCTRL_RTD

index c71e540835c7..b6dcf02ee396 100644
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # Realtek DHC pin control drivers
 obj-$(CONFIG_PINCTRL_RTD)		+= pinctrl-rtd.o
+obj-$(CONFIG_PINCTRL_RTD1319D)		+= pinctrl-rtd1319d.o
 obj-$(CONFIG_PINCTRL_RTD1315E)		+= pinctrl-rtd1315e.o

index e0259e120c1b..0fc6bd4fcb7e 100644
@@ -7,6 +7,11 @@ config PINCTRL_RTD
 	select PINMUX
 	select GENERIC_PINCONF
 
+config PINCTRL_RTD1619B
+	tristate "Realtek DHC 1619B pin controller driver"
+	depends on PINCTRL_RTD
+	default y
+
 config PINCTRL_RTD1319D
 	tristate "Realtek DHC 1319D pin controller driver"
 	depends on PINCTRL_RTD

index b6dcf02ee396..c7bace0001e9 100644
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # Realtek DHC pin control drivers
 obj-$(CONFIG_PINCTRL_RTD)		+= pinctrl-rtd.o
+obj-$(CONFIG_PINCTRL_RTD1619B)		+= pinctrl-rtd1619b.o
 obj-$(CONFIG_PINCTRL_RTD1319D)		+= pinctrl-rtd1319d.o
 obj-$(CONFIG_PINCTRL_RTD1315E)		+= pinctrl-rtd1315e.o

new file mode 100644
index 000000000000..fc6c65fea73b
@@ -0,0 +1,188 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2023 Realtek Semiconductor Corporation
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/realtek,rtd1315e-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek DHC RTD1315E Pin Controller
+
+maintainers:
+  - TY Chang <[email protected]>
+
+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$':
+    type: 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>;
+         };
+     };

new file mode 100644
index 000000000000..f07361d60acd
@@ -0,0 +1,187 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2023 Realtek Semiconductor Corporation
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/realtek,rtd1319d-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek DHC RTD1319D Pin Controller
+
+maintainers:
+  - TY Chang <[email protected]>
+
+description:
+  The Realtek DHC RTD1319D is a high-definition media processor SoC. The
+  RTD1319D pin controller is used to control pin function, pull up/down
+  resistor, drive strength, schmitt trigger and power source.
+
+properties:
+  compatible:
+    const: realtek,rtd1319d-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, emmc_rst_n, emmc_dd_sb, 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, dummy, 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, ejtag_secpu_loc, vtc_dmic_loc, vtc_tdm_loc, vtc_i2si_loc,
+                  tdm_ai_loc, ai_loc, spdif_loc, hif_en_loc, sc0_loc, sc1_loc,
+                  scan_switch, wd_rset, boot_sel, reset_n, testmode ]
+
+      function:
+        enum: [ gpio, nf, emmc, tp0, tp1, sc0, sc0_data0, sc0_data1, sc0_data2,
+                sc1, sc1_data0, sc1_data1, sc1_data2, ao, gspi_loc0, gspi_loc1,
+                uart0, uart1, uart2_loc0, uart2_loc1, i2c0, i2c1, i2c3, i2c4,
+                i2c5, pcie1, sdio, etn_led, etn_phy, spi, pwm0_loc0, pwm0_loc1,
+                pwm1_loc0, pwm1_loc1, pwm2_loc0, pwm2_loc1, pwm3_loc0, pwm3_loc1,
+                qam_agc_if0, qam_agc_if1, spdif_optical_loc0, spdif_optical_loc1,
+                usb_cc1, usb_cc2, vfd, 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, acpu_ejtag_loc0, acpu_ejtag_loc1, acpu_ejtag_loc2,
+                vcpu_ejtag_loc0, vcpu_ejtag_loc1, vcpu_ejtag_loc2, secpu_ejtag_loc0,
+                secpu_ejtag_loc1, secpu_ejtag_loc2, aucpu_ejtag_loc0, aucpu_ejtag_loc1,
+                aucpu_ejtag_loc2, 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, secpu_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,rtd1319d-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>;
+         };
+     };

new file mode 100644
index 000000000000..671e4ec84624
@@ -0,0 +1,186 @@
+# 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>;
+         };
+     };