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Date: Thu, 20 Nov 2014 10:52:45 +0000
From: Lee Jones <lee@...nel.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: arm@...nel.org, Matthias Klein <matthias.klein@...ux.com>,
Lee Jones <lee.jones@...aro.org>
Subject: [PATCH] ARM: bcm2835: Add device tree for Raspberry Pi model B+
From: Matthias Klein <matthias.klein@...ux.com>
The model B and B+ differ in the GPIO lines for ACT and PWR leds, and the
I2S interface.
Signed-off-by: Matthias Klein <matthias.klein@...ux.com>
Tested-by: Stephen Warren <swarren@...dia.com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
As requested by Arnd.
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 30 +++++++++++++++++++
arch/arm/boot/dts/bcm2835-rpi-b.dts | 46 ++--------------------------
arch/arm/boot/dts/bcm2835-rpi.dtsi | 51 ++++++++++++++++++++++++++++++++
4 files changed, 85 insertions(+), 43 deletions(-)
create mode 100644 arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
create mode 100644 arch/arm/boot/dts/bcm2835-rpi.dtsi
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 38c89ca..cbf7db6 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -54,6 +54,7 @@ dtb-$(CONFIG_ARCH_AT91) += at91-sama5d4ek.dtb
dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb
dtb-$(CONFIG_ARCH_AXXIA) += axm5516-amarillo.dtb
dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
+dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b-plus.dtb
dtb-$(CONFIG_ARCH_BCM_5301X) += bcm4708-netgear-r6250.dtb
dtb-$(CONFIG_ARCH_BCM_63XX) += bcm963138dvt.dtb
dtb-$(CONFIG_ARCH_BCM_MOBILE) += bcm28155-ap.dtb \
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
new file mode 100644
index 0000000..e479515
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
@@ -0,0 +1,30 @@
+/dts-v1/;
+/include/ "bcm2835-rpi.dtsi"
+
+/ {
+ compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
+ model = "Raspberry Pi Model B+";
+
+ leds {
+ act {
+ gpios = <&gpio 47 0>;
+ };
+
+ pwr {
+ label = "PWR";
+ gpios = <&gpio 35 0>;
+ default-state = "keep";
+ linux,default-trigger = "default-on";
+ };
+ };
+};
+
+&gpio {
+ pinctrl-0 = <&gpioout &alt0 &i2s_alt0 &alt3>;
+
+ /* I2S interface */
+ i2s_alt0: i2s_alt0 {
+ brcm,pins = <18 19 20 21>;
+ brcm,function = <4>; /* alt0 */
+ };
+};
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts
index 58a0d60..bafa46f 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
@@ -1,63 +1,23 @@
/dts-v1/;
-/include/ "bcm2835.dtsi"
+/include/ "bcm2835-rpi.dtsi"
/ {
compatible = "raspberrypi,model-b", "brcm,bcm2835";
model = "Raspberry Pi Model B";
- memory {
- reg = <0 0x10000000>;
- };
-
leds {
- compatible = "gpio-leds";
-
act {
- label = "ACT";
gpios = <&gpio 16 1>;
- default-state = "keep";
- linux,default-trigger = "heartbeat";
};
};
};
&gpio {
- pinctrl-names = "default";
- pinctrl-0 = <&gpioout &alt0 &alt2 &alt3>;
-
- gpioout: gpioout {
- brcm,pins = <6>;
- brcm,function = <1>; /* GPIO out */
- };
-
- alt0: alt0 {
- brcm,pins = <0 1 2 3 4 5 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 */
- };
+ pinctrl-0 = <&gpioout &alt0 &i2s_alt2 &alt3>;
/* I2S interface */
- alt2: alt2 {
+ i2s_alt2: i2s_alt2 {
brcm,pins = <28 29 30 31>;
brcm,function = <6>; /* alt2 */
};
};
-
-&i2c0 {
- status = "okay";
- clock-frequency = <100000>;
-};
-
-&i2c1 {
- status = "okay";
- clock-frequency = <100000>;
-};
-
-&sdhci {
- status = "okay";
- bus-width = <4>;
-};
diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
new file mode 100644
index 0000000..c706448
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -0,0 +1,51 @@
+/include/ "bcm2835.dtsi"
+
+/ {
+ memory {
+ reg = <0 0x10000000>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ act {
+ label = "ACT";
+ default-state = "keep";
+ linux,default-trigger = "heartbeat";
+ };
+ };
+};
+
+&gpio {
+ pinctrl-names = "default";
+
+ gpioout: gpioout {
+ brcm,pins = <6>;
+ brcm,function = <1>; /* GPIO out */
+ };
+
+ alt0: alt0 {
+ brcm,pins = <0 1 2 3 4 5 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 */
+ };
+};
+
+&i2c0 {
+ status = "okay";
+ clock-frequency = <100000>;
+};
+
+&i2c1 {
+ status = "okay";
+ clock-frequency = <100000>;
+};
+
+&sdhci {
+ status = "okay";
+ bus-width = <4>;
+};
--
1.9.1
--
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