[PATCH 1/2] dt-bindings: gpio: Add Tegra238 support

[PATCH 1/2] dt-bindings: gpio: Add Tegra238 support

[Prathamesh Shete]

Extend the existing Tegra186 GPIO controller device tree bindings with
support for the GPIO controllers found on Tegra238. Tegra238 has two
GPIO controllers: the main controller and always-on (AON) controller.
The number of pins is slightly different, but the programming model
remains the same.

Add a new header, include/dt-bindings/gpio/nvidia,tegra238-gpio.h,
that defines port IDs as well as the TEGRA238_MAIN_GPIO() helper,
both of which are used in conjunction to create a unique specifier
for each pin.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
---
 .../bindings/gpio/nvidia,tegra186-gpio.yaml   |  6 ++
 .../dt-bindings/gpio/nvidia,tegra238-gpio.h   | 58 +++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 include/dt-bindings/gpio/nvidia,tegra238-gpio.h

diff --git a/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.yaml b/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.yaml
index 17748dd1015d..adeb3b3a2902 100644
--- a/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.yaml
@@ -85,6 +85,8 @@ properties:
       - nvidia,tegra194-gpio-aon
       - nvidia,tegra234-gpio
       - nvidia,tegra234-gpio-aon
+      - nvidia,tegra238-gpio
+      - nvidia,tegra238-gpio-aon
       - nvidia,tegra256-gpio
       - nvidia,tegra264-gpio
       - nvidia,tegra264-gpio-uphy
@@ -163,6 +165,7 @@ allOf:
               - nvidia,tegra186-gpio
               - nvidia,tegra194-gpio
               - nvidia,tegra234-gpio
+              - nvidia,tegra238-gpio
               - nvidia,tegra256-gpio
               - nvidia,tegra264-gpio
               - nvidia,tegra264-gpio-uphy
@@ -180,6 +183,7 @@ allOf:
               - nvidia,tegra186-gpio-aon
               - nvidia,tegra194-gpio-aon
               - nvidia,tegra234-gpio-aon
+              - nvidia,tegra238-gpio-aon
               - nvidia,tegra264-gpio-aon
     then:
       properties:
@@ -192,6 +196,8 @@ allOf:
         compatible:
           contains:
             enum:
+              - nvidia,tegra238-gpio
+              - nvidia,tegra238-gpio-aon
               - nvidia,tegra264-gpio
               - nvidia,tegra264-gpio-uphy
               - nvidia,tegra264-gpio-aon
diff --git a/include/dt-bindings/gpio/nvidia,tegra238-gpio.h b/include/dt-bindings/gpio/nvidia,tegra238-gpio.h
new file mode 100644
index 000000000000..8a616a1df54c
--- /dev/null
+++ b/include/dt-bindings/gpio/nvidia,tegra238-gpio.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+/* Copyright (c) 2026, NVIDIA CORPORATION. All rights reserved. */
+
+/*
+ * This header provides constants for binding nvidia,tegra238-gpio*.
+ *
+ * The first cell in Tegra's GPIO specifier is the GPIO ID. The macros below
+ * provide names for this.
+ *
+ * The second cell contains standard flag values specified in gpio.h.
+ */
+
+#ifndef _DT_BINDINGS_GPIO_TEGRA238_GPIO_H
+#define _DT_BINDINGS_GPIO_TEGRA238_GPIO_H
+
+#include <dt-bindings/gpio/gpio.h>
+
+/* GPIOs implemented by main GPIO controller */
+#define TEGRA238_MAIN_GPIO_PORT_A   0
+#define TEGRA238_MAIN_GPIO_PORT_B   1
+#define TEGRA238_MAIN_GPIO_PORT_C   2
+#define TEGRA238_MAIN_GPIO_PORT_D   3
+#define TEGRA238_MAIN_GPIO_PORT_E   4
+#define TEGRA238_MAIN_GPIO_PORT_F   5
+#define TEGRA238_MAIN_GPIO_PORT_G   6
+#define TEGRA238_MAIN_GPIO_PORT_H   7
+#define TEGRA238_MAIN_GPIO_PORT_J   8
+#define TEGRA238_MAIN_GPIO_PORT_K   9
+#define TEGRA238_MAIN_GPIO_PORT_L  10
+#define TEGRA238_MAIN_GPIO_PORT_M  11
+#define TEGRA238_MAIN_GPIO_PORT_N  12
+#define TEGRA238_MAIN_GPIO_PORT_P  13
+#define TEGRA238_MAIN_GPIO_PORT_Q  14
+#define TEGRA238_MAIN_GPIO_PORT_R  15
+#define TEGRA238_MAIN_GPIO_PORT_S  16
+#define TEGRA238_MAIN_GPIO_PORT_T  17
+#define TEGRA238_MAIN_GPIO_PORT_U  18
+#define TEGRA238_MAIN_GPIO_PORT_V  19
+#define TEGRA238_MAIN_GPIO_PORT_W  20
+#define TEGRA238_MAIN_GPIO_PORT_X  21
+
+#define TEGRA238_MAIN_GPIO(port, offset) \
+	((TEGRA238_MAIN_GPIO_PORT_##port * 8) + (offset))
+
+/* GPIOs implemented by AON GPIO controller */
+#define TEGRA238_AON_GPIO_PORT_AA 0
+#define TEGRA238_AON_GPIO_PORT_BB 1
+#define TEGRA238_AON_GPIO_PORT_CC 2
+#define TEGRA238_AON_GPIO_PORT_DD 3
+#define TEGRA238_AON_GPIO_PORT_EE 4
+#define TEGRA238_AON_GPIO_PORT_FF 5
+#define TEGRA238_AON_GPIO_PORT_GG 6
+#define TEGRA238_AON_GPIO_PORT_HH 7
+
+#define TEGRA238_AON_GPIO(port, offset) \
+	((TEGRA238_AON_GPIO_PORT_##port * 8) + (offset))
+
+#endif
-- 
2.25.1

[PATCH 2/2] gpio: tegra186: Add support for Tegra238

[Prathamesh Shete]

Extend the existing Tegra186 GPIO controller driver with support for the
GPIO controller found on Tegra238.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
---
 drivers/gpio/gpio-tegra186.c | 68 ++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c
index aa7c3e44234f..f56617c298c0 100644
--- a/drivers/gpio/gpio-tegra186.c
+++ b/drivers/gpio/gpio-tegra186.c
@@ -19,6 +19,7 @@
 #include <dt-bindings/gpio/tegra186-gpio.h>
 #include <dt-bindings/gpio/tegra194-gpio.h>
 #include <dt-bindings/gpio/tegra234-gpio.h>
+#include <dt-bindings/gpio/nvidia,tegra238-gpio.h>
 #include <dt-bindings/gpio/tegra241-gpio.h>
 #include <dt-bindings/gpio/tegra256-gpio.h>
 #include <dt-bindings/gpio/nvidia,tegra264-gpio.h>
@@ -1239,6 +1240,67 @@ static const struct tegra_gpio_soc tegra234_aon_soc = {
 	.has_vm_support = false,
 };
 
+#define TEGRA238_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
+	TEGRA_GPIO_PORT(TEGRA238_MAIN, _name, _bank, _port, _pins)
+
+static const struct tegra_gpio_port tegra238_main_ports[] = {
+	TEGRA238_MAIN_GPIO_PORT(A, 0, 0, 8),
+	TEGRA238_MAIN_GPIO_PORT(B, 0, 1, 5),
+	TEGRA238_MAIN_GPIO_PORT(C, 0, 2, 8),
+	TEGRA238_MAIN_GPIO_PORT(D, 0, 3, 8),
+	TEGRA238_MAIN_GPIO_PORT(E, 0, 4, 4),
+	TEGRA238_MAIN_GPIO_PORT(F, 0, 5, 8),
+	TEGRA238_MAIN_GPIO_PORT(G, 0, 6, 8),
+	TEGRA238_MAIN_GPIO_PORT(H, 0, 7, 6),
+	TEGRA238_MAIN_GPIO_PORT(J, 1, 0, 8),
+	TEGRA238_MAIN_GPIO_PORT(K, 1, 1, 4),
+	TEGRA238_MAIN_GPIO_PORT(L, 1, 2, 8),
+	TEGRA238_MAIN_GPIO_PORT(M, 1, 3, 8),
+	TEGRA238_MAIN_GPIO_PORT(N, 1, 4, 3),
+	TEGRA238_MAIN_GPIO_PORT(P, 1, 5, 8),
+	TEGRA238_MAIN_GPIO_PORT(Q, 1, 6, 3),
+	TEGRA238_MAIN_GPIO_PORT(R, 2, 0, 8),
+	TEGRA238_MAIN_GPIO_PORT(S, 2, 1, 8),
+	TEGRA238_MAIN_GPIO_PORT(T, 2, 2, 8),
+	TEGRA238_MAIN_GPIO_PORT(U, 2, 3, 6),
+	TEGRA238_MAIN_GPIO_PORT(V, 2, 4, 2),
+	TEGRA238_MAIN_GPIO_PORT(W, 3, 0, 8),
+	TEGRA238_MAIN_GPIO_PORT(X, 3, 1, 2)
+};
+
+static const struct tegra_gpio_soc tegra238_main_soc = {
+	.num_ports = ARRAY_SIZE(tegra238_main_ports),
+	.ports = tegra238_main_ports,
+	.name = "tegra238-gpio",
+	.instance = 0,
+	.num_irqs_per_bank = 8,
+	.has_vm_support = true,
+};
+
+#define TEGRA238_AON_GPIO_PORT(_name, _bank, _port, _pins) \
+	TEGRA_GPIO_PORT(TEGRA238_AON, _name, _bank, _port, _pins)
+
+static const struct tegra_gpio_port tegra238_aon_ports[] = {
+	TEGRA238_AON_GPIO_PORT(AA, 0, 0, 8),
+	TEGRA238_AON_GPIO_PORT(BB, 0, 1, 1),
+	TEGRA238_AON_GPIO_PORT(CC, 0, 2, 8),
+	TEGRA238_AON_GPIO_PORT(DD, 0, 3, 8),
+	TEGRA238_AON_GPIO_PORT(EE, 0, 4, 6),
+	TEGRA238_AON_GPIO_PORT(FF, 0, 5, 8),
+	TEGRA238_AON_GPIO_PORT(GG, 0, 6, 8),
+	TEGRA238_AON_GPIO_PORT(HH, 0, 7, 4)
+};
+
+static const struct tegra_gpio_soc tegra238_aon_soc = {
+	.num_ports = ARRAY_SIZE(tegra238_aon_ports),
+	.ports = tegra238_aon_ports,
+	.name = "tegra238-gpio-aon",
+	.instance = 1,
+	.num_irqs_per_bank = 8,
+	.has_gte = true,
+	.has_vm_support = false,
+};
+
 #define TEGRA241_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
 	TEGRA_GPIO_PORT(TEGRA241_MAIN, _name, _bank, _port, _pins)
 
@@ -1447,6 +1509,12 @@ static const struct of_device_id tegra186_gpio_of_match[] = {
 	}, {
 		.compatible = "nvidia,tegra234-gpio-aon",
 		.data = &tegra234_aon_soc
+	}, {
+		.compatible = "nvidia,tegra238-gpio",
+		.data = &tegra238_main_soc
+	}, {
+		.compatible = "nvidia,tegra238-gpio-aon",
+		.data = &tegra238_aon_soc
 	}, {
 		.compatible = "nvidia,tegra256-gpio",
 		.data = &tegra256_main_soc
-- 
2.25.1

Re: [PATCH 1/2] dt-bindings: gpio: Add Tegra238 support

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 75 bytes --]

Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

Re: [PATCH 1/2] dt-bindings: gpio: Add Tegra238 support

[Bartosz Golaszewski]

On Thu, 14 May 2026 12:48:34 +0000, Prathamesh Shete wrote:
> Extend the existing Tegra186 GPIO controller device tree bindings with
> support for the GPIO controllers found on Tegra238. Tegra238 has two
> GPIO controllers: the main controller and always-on (AON) controller.
> The number of pins is slightly different, but the programming model
> remains the same.
> 
> Add a new header, include/dt-bindings/gpio/nvidia,tegra238-gpio.h,
> that defines port IDs as well as the TEGRA238_MAIN_GPIO() helper,
> both of which are used in conjunction to create a unique specifier
> for each pin.
> 
> [...]

Applied, thanks!

[1/2] dt-bindings: gpio: Add Tegra238 support
      https://git.kernel.org/brgl/c/4002ccd266b665f1097e20addbe8f3baeb2136f9
[2/2] gpio: tegra186: Add support for Tegra238
      https://git.kernel.org/brgl/c/8ac12d8b7099cdebff19aed78a81f61d8042c6be

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>