bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0062-pinctrl-bcm2835-Set-base-to-0-give-expected-gpio-num.patch b/target/linux/bcm27xx/patches-5.15/950-0062-pinctrl-bcm2835-Set-base-to-0-give-expected-gpio-num.patch
new file mode 100644
index 0000000000..fd189a539b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0062-pinctrl-bcm2835-Set-base-to-0-give-expected-gpio-num.patch
@@ -0,0 +1,40 @@
+From 43913829405fae8dbc5362e40a2fddf2aac1ca45 Mon Sep 17 00:00:00 2001
+From: notro <notro@tronnes.org>
+Date: Thu, 10 Jul 2014 13:59:47 +0200
+Subject: [PATCH] pinctrl-bcm2835: Set base to 0 give expected gpio
+ numbering
+
+Signed-off-by: Noralf Tronnes <notro@tronnes.org>
+
+SQUASH: pinctrl: bcm2835: Set base for bcm2711 GPIO to 0
+
+Without this patch GPIOs don't seem to work properly, primarily
+noticeable as broken LEDs.
+
+Squash with "pinctrl-bcm2835: Set base to 0 give expected gpio numbering"
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/pinctrl/bcm/pinctrl-bcm2835.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c
++++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c
+@@ -362,7 +362,7 @@ static const struct gpio_chip bcm2835_gp
+ 	.get = bcm2835_gpio_get,
+ 	.set = bcm2835_gpio_set,
+ 	.set_config = gpiochip_generic_config,
+-	.base = -1,
++	.base = 0,
+ 	.ngpio = BCM2835_NUM_GPIOS,
+ 	.can_sleep = false,
+ };
+@@ -378,7 +378,7 @@ static const struct gpio_chip bcm2711_gp
+ 	.get = bcm2835_gpio_get,
+ 	.set = bcm2835_gpio_set,
+ 	.set_config = gpiochip_generic_config,
+-	.base = -1,
++	.base = 0,
+ 	.ngpio = BCM2711_NUM_GPIOS,
+ 	.can_sleep = false,
+ };