path: root/bcm2837-dts-add-Raspberry-Pi-3-A.patch

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From: Stefan Wahren <stefan.wahren@i2se.com>
To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
 Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
 Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>,
 Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH V3 1/3] dt-bindings: bcm: Add Raspberry Pi 3 A+
Date: Tue,  4 Dec 2018 19:58:17 +0100
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Cc: Stefan Wahren <stefan.wahren@i2se.com>, devicetree@vger.kernel.org,
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This adds the root properties for the Raspberry Pi 3 A+ .

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
index 0dcc3ea..245328f 100644
--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
@@ -30,6 +30,10 @@ Raspberry Pi 2 Model B
 Required root node properties:
 compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
 
+Raspberry Pi 3 Model A+
+Required root node properties:
+compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
+
 Raspberry Pi 3 Model B
 Required root node properties:
 compatible = "raspberrypi,3-model-b", "brcm,bcm2837";

From patchwork Tue Dec  4 18:58:18 2018
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From: Stefan Wahren <stefan.wahren@i2se.com>
To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
 Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
 Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>,
 Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH V3 2/3] ARM: dts: add Raspberry Pi 3 A+
Date: Tue,  4 Dec 2018 19:58:18 +0100
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Cc: Stefan Wahren <stefan.wahren@i2se.com>, devicetree@vger.kernel.org,
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The Raspberry Pi 3 A+ is similar to the Pi 3 B+ but has only 512 MB RAM,
1 USB 2.0 port and no Ethernet.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
---
 arch/arm/boot/dts/Makefile                 |   1 +
 arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts | 107 +++++++++++++++++++++++++++++
 2 files changed, 108 insertions(+)
 create mode 100644 arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b0e966d..15bbd0d 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -79,6 +79,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
 	bcm2835-rpi-a-plus.dtb \
 	bcm2835-rpi-cm1-io1.dtb \
 	bcm2836-rpi-2-b.dtb \
+	bcm2837-rpi-3-a-plus.dtb \
 	bcm2837-rpi-3-b.dtb \
 	bcm2837-rpi-3-b-plus.dtb \
 	bcm2837-rpi-cm3-io3.dtb \
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
new file mode 100644
index 0000000..b2df7cf
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2837.dtsi"
+#include "bcm2836-rpi.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+	compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
+	model = "Raspberry Pi 3 Model A+";
+
+	chosen {
+		/* 8250 auxiliary UART instead of pl011 */
+		stdout-path = "serial1:115200n8";
+	};
+
+	memory {
+		reg = <0 0x20000000>;
+	};
+
+	leds {
+		act {
+			gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
+		};
+
+		pwr {
+			label = "PWR";
+			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	wifi_pwrseq: wifi-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&firmware {
+	expgpio: gpio {
+		compatible = "raspberrypi,firmware-gpio";
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names = "BT_ON",
+				  "WL_ON",
+				  "STATUS_LED",
+				  "",
+				  "",
+				  "CAM_GPIO0",
+				  "CAM_GPIO1",
+				  "";
+		status = "okay";
+	};
+};
+
+&hdmi {
+	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
+};
+
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
+	status = "okay";
+};
+
+/* SDHCI is used to control the SDIO for wireless */
+&sdhci {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_gpio34>;
+	status = "okay";
+	bus-width = <4>;
+	non-removable;
+	mmc-pwrseq = <&wifi_pwrseq>;
+
+	brcmf: wifi@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+	};
+};
+
+/* SDHOST is used to drive the SD card */
+&sdhost {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdhost_gpio48>;
+	status = "okay";
+	bus-width = <4>;
+};
+
+/* uart0 communicates with the BT module */
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		max-speed = <2000000>;
+		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+/* uart1 is mapped to the pin header */
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_gpio14>;
+	status = "okay";
+};

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From: Stefan Wahren <stefan.wahren@i2se.com>
To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
 Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
 Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>,
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Subject: [PATCH V3 3/3] arm64: dts: broadcom: Add reference to RPi 3 A+
Date: Tue,  4 Dec 2018 19:58:19 +0100
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Cc: Stefan Wahren <stefan.wahren@i2se.com>, devicetree@vger.kernel.org,
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This adds a reference to the dts of the Raspberry Pi 3 A+,
so we don't need to maintain the content in arm64.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
---
 arch/arm64/boot/dts/broadcom/Makefile                 | 3 ++-
 arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts

diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
index 667ca98..d1d31cc 100644
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_ARCH_BCM2835) += bcm2837-rpi-3-b.dtb \
+dtb-$(CONFIG_ARCH_BCM2835) += bcm2837-rpi-3-a-plus.dtb \
+			      bcm2837-rpi-3-b.dtb \
 			      bcm2837-rpi-3-b-plus.dtb \
 			      bcm2837-rpi-cm3-io3.dtb
 
diff --git a/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts
new file mode 100644
index 0000000..f0ec56a
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "arm/bcm2837-rpi-3-a-plus.dts"