Add rpigpio(4), a driver for the RP1 GPIO controller on the Raspberry Pi 5.

With this, GPIOs can be correctly configured and engaged.  Complete pinctrl
as well as IRQ functionality is yet to be implemented.

ok kettenis@

3 files changed, 9 insertions, 3 deletions

diff --git a/sys/arch/arm64/conf/GENERIC b/sys/arch/arm64/conf/GENERIC
index be2f71ed588..b6421e6e22c 100644
--- a/sys/arch/arm64/conf/GENERIC
+++ b/sys/arch/arm64/conf/GENERIC
@@ -1,4 +1,4 @@
-# $OpenBSD: GENERIC,v 1.285 2024/03/24 22:34:48 patrick Exp $
+# $OpenBSD: GENERIC,v 1.286 2024/03/25 17:24:03 patrick Exp $
 #
 # GENERIC machine description file
 #
@@ -244,6 +244,7 @@ bse*		at fdt?
 bse*		at acpi?
 dwctwo*		at fdt?
 usb*		at dwctwo?
+rpigpio*	at fdt? early 1
 
 # Amlogic SoCs
 amlclock*	at fdt? early 1
diff --git a/sys/arch/arm64/conf/RAMDISK b/sys/arch/arm64/conf/RAMDISK
index 23be641497f..c25a704337d 100644
--- a/sys/arch/arm64/conf/RAMDISK
+++ b/sys/arch/arm64/conf/RAMDISK
@@ -1,4 +1,4 @@
-# $OpenBSD: RAMDISK,v 1.215 2024/03/24 22:34:48 patrick Exp $
+# $OpenBSD: RAMDISK,v 1.216 2024/03/25 17:24:03 patrick Exp $
 
 machine		arm64
 maxusers	4
@@ -180,6 +180,7 @@ bse*		at fdt?
 bse*		at acpi?
 dwctwo*		at fdt?
 usb*		at dwctwo?
+rpigpio*	at fdt? early 1
 
 # Amlogic SoCs
 amlclock*	at fdt? early 1
diff --git a/sys/arch/arm64/conf/files.arm64 b/sys/arch/arm64/conf/files.arm64
index 117a99b10e4..833ea3f050f 100644
--- a/sys/arch/arm64/conf/files.arm64
+++ b/sys/arch/arm64/conf/files.arm64
@@ -1,4 +1,4 @@
-# $OpenBSD: files.arm64,v 1.68 2024/01/01 18:25:50 kettenis Exp $
+# $OpenBSD: files.arm64,v 1.69 2024/03/25 17:24:03 patrick Exp $
 
 maxpartitions	16
 maxusers	2 8 128
@@ -259,6 +259,10 @@ attach	smmu at fdt with smmu_fdt
 file	arch/arm64/dev/smmu.c			smmu
 file	arch/arm64/dev/smmu_fdt.c		smmu_fdt
 
+device	rpigpio
+attach	rpigpio at fdt
+file	arch/arm64/dev/rpigpio.c		rpigpio
+
 # ACPI
 include "dev/acpi/files.acpi"