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-rw-r--r--arch/arm/Kconfig5
-rw-r--r--arch/arm/boot/dts/bcm2835-rpi-b.dts15
-rw-r--r--arch/arm/boot/dts/bcm2835.dtsi23
-rw-r--r--arch/arm/mach-bcm2835/include/mach/gpio.h1
4 files changed, 43 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 73067ef..7cce11a 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -336,7 +336,7 @@ config ARCH_AT91
config ARCH_BCM2835
bool "Broadcom BCM2835 family"
- select ARCH_WANT_OPTIONAL_GPIOLIB
+ select ARCH_REQUIRE_GPIOLIB
select ARM_AMBA
select ARM_ERRATA_411920
select ARM_TIMER_SP804
@@ -344,7 +344,10 @@ config ARCH_BCM2835
select COMMON_CLK
select CPU_V6
select GENERIC_CLOCKEVENTS
+ select GENERIC_GPIO
select MULTI_IRQ_HANDLER
+ select PINCTRL
+ select PINCTRL_BCM2835
select SPARSE_IRQ
select USE_OF
help
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts
index 7dd860f..9b72054 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
@@ -10,3 +10,18 @@
reg = <0 0x10000000>;
};
};
+
+&gpio {
+ pinctrl-names = "default";
+ pinctrl-0 = <&alt0 &alt3>;
+
+ alt0: alt0 {
+ brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11 14 15 40 45>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ alt3: alt3 {
+ brcm,pins = <48 49 50 51 52 53>;
+ brcm,function = <7>; /* alt3 */
+ };
+};
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index 5c5cbaf..8917550 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -40,5 +40,28 @@
interrupts = <2 25>;
clock-frequency = <3000000>;
};
+
+ gpio: gpio {
+ compatible = "brcm,bcm2835-gpio";
+ reg = <0x7e200000 0xb4>;
+ /*
+ * The GPIO IP block is designed for 3 banks of GPIOs.
+ * Each bank has a GPIO interrupt for itself.
+ * There is an overall "any bank" interrupt.
+ * In order, these are GIC interrupts 17, 18, 19, 20.
+ * Since the BCM2835 only has 2 banks, the 2nd bank
+ * interrupt output appears to be mirrored onto the
+ * 3rd bank's interrupt signal.
+ * So, a bank0 interrupt shows up on 17, 20, and
+ * a bank1 interrupt shows up on 18, 19, 20!
+ */
+ interrupts = <2 17>, <2 18>, <2 19>, <2 20>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
};
};
diff --git a/arch/arm/mach-bcm2835/include/mach/gpio.h b/arch/arm/mach-bcm2835/include/mach/gpio.h
new file mode 100644
index 0000000..40a8c17
--- /dev/null
+++ b/arch/arm/mach-bcm2835/include/mach/gpio.h
@@ -0,0 +1 @@
+/* empty */
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