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kernel/bcm2837-dts-add-Raspberry-Pi-3-A.patch

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Initial support for Raspberry Pi model 3A+
2018-12-20 03:16:00 +00:00
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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,
bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.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";
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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"
fix Raspberry Pi 3A+ DT
2018-12-25 01:40:48 +00:00
+#include "bcm2835-rpi.dtsi"
Initial support for Raspberry Pi model 3A+
2018-12-20 03:16:00 +00:00
+#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";
+};
From patchwork Tue Dec 4 18:58:19 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 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"
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