Merge tag 'renesas-pinctrl-for-v6.20-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: renesas: Updates for v6.20

  - Add support for GPIO IRQs on RZ/T2H and RZ/N2H.

Signed-off-by: Linus Walleij <linusw@kernel.org>

Author: linusw

Documentation/devicetree/bindings/pinctrl/renesas,r9a09g077-pinctrl.yaml

@@ -49,6 +49,17 @@ properties:
   gpio-ranges:
     maxItems: 1
 
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+    description:
+      The first cell contains the global GPIO port index, constructed using the
+      RZT2H_GPIO() helper macro from <dt-bindings/pinctrl/renesas,r9a09g077-pinctrl.h>
+      and the second cell is used to specify the flag.
+      E.g. "interrupts = <RZT2H_GPIO(8, 6) IRQ_TYPE_EDGE_FALLING>;" if P08_6 is
+      being used as an interrupt.
+
   clocks:
     maxItems: 1
 
@@ -139,6 +150,8 @@ examples:
         gpio-controller;
         #gpio-cells = <2>;
         gpio-ranges = <&pinctrl 0 0 288>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
         power-domains = <&cpg>;
 
         serial0-pins {

drivers/pinctrl/renesas/Kconfig

@@ -308,9 +308,11 @@ config PINCTRL_RZT2H
 	bool "pin control support for RZ/N2H and RZ/T2H" if COMPILE_TEST
 	depends on 64BIT && OF
 	select GPIOLIB
+	select GPIOLIB_IRQCHIP
 	select GENERIC_PINCTRL_GROUPS
 	select GENERIC_PINMUX_FUNCTIONS
 	select GENERIC_PINCONF
+	select IRQ_DOMAIN_HIERARCHY
 	help
 	  This selects GPIO and pinctrl driver for Renesas RZ/T2H
 	  platforms.