[PATCH] arm64: dts: ti: k3-pinctrl: Add virtual GPIO select mux macros

[Akashdeep Kaur]

Add virtual GPIO select mux macros to allow users to select GPIO
controller bank for pins. The two GPIO controller instances in the
MAIN domain share physical pins, and the vgpio_sel field routes each
pin to either bank 0 or bank 2, enabling GPIO partitioning between
software domains as documented in Technical Reference Manual[1]. The
pad configuration register field description can be referenced at [2].

[1] AM62L TRM (section 10.6): https://www.ti.com/lit/ug/sprujb4a/sprujb4a.pdf
[2] AM62L TRM (section 14.2.1.2.1): https://www.ti.com/lit/ug/sprujb4a/sprujb4a.pdf

Signed-off-by: Akashdeep Kaur <a-kaur@xxxxxx>
---
 arch/arm64/boot/dts/ti/k3-pinctrl.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-pinctrl.h b/arch/arm64/boot/dts/ti/k3-pinctrl.h
index 4491898d8294..d42c466fcc7b 100644
--- a/arch/arm64/boot/dts/ti/k3-pinctrl.h
+++ b/arch/arm64/boot/dts/ti/k3-pinctrl.h
@@ -3,11 +3,12 @@
  * This header provides constants for pinctrl bindings for TI's K3 SoC
  * family.
  *
- * Copyright (C) 2018-2025 Texas Instruments Incorporated - https://www.ti.com/
+ * Copyright (C) 2018-2026 Texas Instruments Incorporated - https://www.ti.com/
  */
 #ifndef DTS_ARM64_TI_K3_PINCTRL_H
 #define DTS_ARM64_TI_K3_PINCTRL_H
 
+#define VGPIO_SEL_SHIFT         (4)
 #define WKUP_LVL_EN_SHIFT	(7)
 #define WKUP_LVL_POL_SHIFT	(8)
 #define DEBOUNCE_SHIFT		(11)
@@ -111,6 +112,9 @@
 #define PIN_WKUP_EN_LEVEL_HIGH		(WKUP_ENABLE | WKUP_ON_LEVEL | WKUP_LEVEL_HIGH)
 #define PIN_WKUP_EN			(WKUP_ENABLE | WKUP_ON_EDGE)
 
+#define PIN_VGPIO_SEL0                  (0 << VGPIO_SEL_SHIFT)
+#define PIN_VGPIO_SEL2                  (1 << VGPIO_SEL_SHIFT)
+
 /* Default mux configuration for gpio-ranges to use with pinctrl */
 #define PIN_GPIO_RANGE_IOPAD	(PIN_INPUT | 7)
 
-- 
2.34.1