dt-bindings: gpio: Add Tegra264 support

Extend the existing Tegra186 GPIO controller driver with support for the GPIO controller found on Tegra264.

Use the "wakeup-parent" phandle from the GPIO device tree node to ensure the GPIO driver associates with the intended PMC device. Relying only on compatible-based lookup can select an unexpected PMC node, so fall back to compatible-based lookup when the phandle is not present.

Signed-off-by Prathamesh Shete <[email protected]>

---
Changes in v2:
* Use “wakeup-parent” instead of "nvidia,pmc" and include the renamed header.

---
  drivers/gpio/gpio-tegra186.c | 90 +++++++++++++++++++++++++++++++++++-
  1 file changed, 88 insertions(+), 2 deletions(-)

drivers/gpio/gpio-tegra186.c +81 -2

index b1498b59a921..9c874f07be75 100644
@@ -1,6 +1,6 @@
  // SPDX-License-Identifier: GPL-2.0-only
  /*
- * Copyright (c) 2016-2025 NVIDIA Corporation
+ * Copyright (c) 2016-2026 NVIDIA Corporation
   *
   * Author: Thierry Reding <[email protected]>
   *	   Dipen Patel <[email protected]>

@@ -21,6 +21,7 @@
  #include <dt-bindings/gpio/tegra234-gpio.h>
  #include <dt-bindings/gpio/tegra241-gpio.h>
  #include <dt-bindings/gpio/tegra256-gpio.h>
+#include <dt-bindings/gpio/nvidia,tegra264-gpio.h>
 
  /* security registers */
  #define TEGRA186_GPIO_CTL_SCR 0x0c

@@ -1001,7 +1002,9 @@ static int tegra186_gpio_probe(struct platform_device *pdev)
  	if (gpio->soc->num_irqs_per_bank > 1)
  		tegra186_gpio_init_route_mapping(gpio);
 
-	np = of_find_matching_node(NULL, tegra186_pmc_of_match);
+	np = of_parse_phandle(pdev->dev.of_node, "wakeup-parent", 0);
+	if (!np)
+		np = of_find_matching_node(NULL, tegra186_pmc_of_match);
  	if (np) {
  		if (of_device_is_available(np)) {
  			irq->parent_domain = irq_find_host(np);

@@ -1277,6 +1280,80 @@ static const struct tegra_gpio_soc tegra241_aon_soc = {
  	.has_vm_support = false,
  };
 
+#define TEGRA264_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
+	TEGRA_GPIO_PORT(TEGRA264_MAIN, _name, _bank, _port, _pins)
+
+static const struct tegra_gpio_port tegra264_main_ports[] = {
+	TEGRA264_MAIN_GPIO_PORT(F, 3, 0, 8),
+	TEGRA264_MAIN_GPIO_PORT(G, 3, 1, 5),
+	TEGRA264_MAIN_GPIO_PORT(H, 1, 0, 8),
+	TEGRA264_MAIN_GPIO_PORT(J, 1, 1, 8),
+	TEGRA264_MAIN_GPIO_PORT(K, 1, 2, 8),
+	TEGRA264_MAIN_GPIO_PORT(L, 1, 3, 8),
+	TEGRA264_MAIN_GPIO_PORT(M, 1, 4, 6),
+	TEGRA264_MAIN_GPIO_PORT(P, 2, 0, 8),
+	TEGRA264_MAIN_GPIO_PORT(Q, 2, 1, 8),
+	TEGRA264_MAIN_GPIO_PORT(R, 2, 2, 8),
+	TEGRA264_MAIN_GPIO_PORT(S, 2, 3, 2),
+	TEGRA264_MAIN_GPIO_PORT(T, 0, 0, 7),
+	TEGRA264_MAIN_GPIO_PORT(U, 0, 1, 8),
+	TEGRA264_MAIN_GPIO_PORT(V, 0, 2, 8),
+	TEGRA264_MAIN_GPIO_PORT(W, 0, 3, 8),
+	TEGRA264_MAIN_GPIO_PORT(X, 0, 7, 6),
+	TEGRA264_MAIN_GPIO_PORT(Y, 0, 5, 8),
+	TEGRA264_MAIN_GPIO_PORT(Z, 0, 6, 8),
+	TEGRA264_MAIN_GPIO_PORT(AL, 0, 4, 3),
+};
+
+static const struct tegra_gpio_soc tegra264_main_soc = {
+	.num_ports = ARRAY_SIZE(tegra264_main_ports),
+	.ports = tegra264_main_ports,
+	.name = "tegra264-gpio",
+	.instance = 0,
+	.num_irqs_per_bank = 8,
+	.has_vm_support = true,
+};
+
+#define TEGRA264_AON_GPIO_PORT(_name, _bank, _port, _pins) \
+	TEGRA_GPIO_PORT(TEGRA264_AON, _name, _bank, _port, _pins)
+
+static const struct tegra_gpio_port tegra264_aon_ports[] = {
+	TEGRA264_AON_GPIO_PORT(AA, 0, 0, 8),
+	TEGRA264_AON_GPIO_PORT(BB, 0, 1, 2),
+	TEGRA264_AON_GPIO_PORT(CC, 0, 2, 8),
+	TEGRA264_AON_GPIO_PORT(DD, 0, 3, 8),
+	TEGRA264_AON_GPIO_PORT(EE, 0, 4, 4)
+};
+
+static const struct tegra_gpio_soc tegra264_aon_soc = {
+	.num_ports = ARRAY_SIZE(tegra264_aon_ports),
+	.ports = tegra264_aon_ports,
+	.name = "tegra264-gpio-aon",
+	.instance = 1,
+	.num_irqs_per_bank = 8,
+	.has_vm_support = true,
+};
+
+#define TEGRA264_UPHY_GPIO_PORT(_name, _bank, _port, _pins) \
+	TEGRA_GPIO_PORT(TEGRA264_UPHY, _name, _bank, _port, _pins)
+
+static const struct tegra_gpio_port tegra264_uphy_ports[] = {
+	TEGRA264_UPHY_GPIO_PORT(A, 0, 0, 6),
+	TEGRA264_UPHY_GPIO_PORT(B, 0, 1, 8),
+	TEGRA264_UPHY_GPIO_PORT(C, 0, 2, 3),
+	TEGRA264_UPHY_GPIO_PORT(D, 1, 0, 8),
+	TEGRA264_UPHY_GPIO_PORT(E, 1, 1, 4),
+};
+
+static const struct tegra_gpio_soc tegra264_uphy_soc = {
+	.num_ports = ARRAY_SIZE(tegra264_uphy_ports),
+	.ports = tegra264_uphy_ports,
+	.name = "tegra264-gpio-uphy",
+	.instance = 2,
+	.num_irqs_per_bank = 8,
+	.has_vm_support = true,
+};
+
  #define TEGRA256_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
  	TEGRA_GPIO_PORT(TEGRA256_MAIN, _name, _bank, _port, _pins)
 

@@ -1368,6 +1445,15 @@ static const struct of_device_id tegra186_gpio_of_match[] = {
  	}, {
  		.compatible = "nvidia,tegra256-gpio",
  		.data = &tegra256_main_soc
+	}, {
+		.compatible = "nvidia,tegra264-gpio",

Add device tree nodes for MAIN, AON and UPHY GPIO controller instances.

Signed-off-by Prathamesh Shete <[email protected]>

---
Changes in v2:
* Update Tegra264 GPIO nodes to use “wakeup-parent”.

---
  arch/arm64/boot/dts/nvidia/tegra264.dtsi | 88 ++++++++++++++++++++++++
  1 file changed, 88 insertions(+)

arch/arm64/boot/dts/nvidia/tegra264.dtsi +81 -0

index f137565da804..cf4de2c517fa 100644
@@ -3277,6 +3277,50 @@
  			status = "disabled";
  		};
 
+		gpio_main: gpio@c300000 {
+			compatible = "nvidia,tegra264-gpio";
+			reg = <0x00 0x0c300000 0x0 0x4000>,
+			      <0x00 0x0c310000 0x0 0x4000>;
+			reg-names = "security", "gpio";
+			wakeup-parent = <&pmc>;
+			interrupts =  <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
+				      <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
  		serial@c4e0000 {
  			compatible = "nvidia,tegra264-utc";
  			reg = <0x0 0x0c4e0000 0x0 0x8000>,

@@ -3347,6 +3391,22 @@
  			#interrupt-cells = <2>;
  			interrupt-controller;
  		};
+
+		gpio_aon: gpio@cf00000 {
+			compatible = "nvidia,tegra264-gpio-aon";
+			reg = <0x0 0x0cf00000 0x0 0x10000>,
+			      <0x0 0x0cf10000 0x0 0x1000>;
+			reg-names = "security", "gpio";
+			wakeup-parent = <&pmc>;
+			interrupts = <GIC_SPI 538 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 539 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 540 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 541 IRQ_TYPE_LEVEL_HIGH>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
  	};
 
  	/* TOP_MMIO */

@@ -3726,6 +3786,34 @@
 
  		ranges = <0x00 0x00000000 0xa8 0x00000000 0x40 0x00000000>, /* MMIO, ECAM, prefetchable memory, I/O */
  			 <0x80 0x00000000 0x00 0x20000000 0x00 0x40000000>; /* non-prefetchable memory (32-bit) */
+
+		gpio_uphy: gpio@8300000 {
+			compatible = "nvidia,tegra264-gpio-uphy";
+			reg = <0x00 0x08300000 0x0 0x2000>,
+			      <0x00 0x08310000 0x0 0x2000>;
+			reg-names = "security", "gpio";
+			wakeup-parent = <&pmc>;
+			interrupts = <GIC_SPI 843 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 844 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 845 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 846 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 847 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 848 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 849 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 850 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 851 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 852 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 853 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 854 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 855 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 856 IRQ_TYPE_LEVEL_HIGH>,