ARM: dts: bcm2837: Add Raspberry Pi 3 B+

The Raspberry Pi 3 B+ has the following major differences compared
to the model 3 B:
* Microchip LAN7515 (Gigabit Ethernet with integrated USB 2.0 HUB)
* Cypress CYW43455 (802.11n/ac and BT 4.2)

We need to add the USB LAN chip so the bootloader can add the MAC address.
This is necessary because there ain't an EEPROM or a valid OTP.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 7e24249..a300a35 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -75,6 +75,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
        bcm2835-rpi-a-plus.dtb \
        bcm2836-rpi-2-b.dtb \
        bcm2837-rpi-3-b.dtb \
+       bcm2837-rpi-3-b-plus.dtb \
        bcm2835-rpi-zero.dtb \
        bcm2835-rpi-zero-w.dtb
 dtb-$(CONFIG_ARCH_BCM_5301X) += \

diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
new file mode 100644 (file)
index 0000000..4adb85e
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+#include "bcm2837.dtsi"
+#include "bcm2835-rpi.dtsi"
+#include "bcm283x-rpi-lan7515.dtsi"
+#include "bcm283x-rpi-usb-host.dtsi"
+
+/ {
+       compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
+       model = "Raspberry Pi 3 Model B+";
+
+       chosen {
+               /* 8250 auxiliary UART instead of pl011 */
+               stdout-path = "serial1:115200n8";
+       };
+
+       memory {
+               reg = <0 0x40000000>;
+       };
+
+       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_HIGH>;
+       };
+};
+
+&firmware {
+       expgpio: gpio {
+               compatible = "raspberrypi,firmware-gpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-line-names = "BT_ON",
+                                 "WL_ON",
+                                 "STATUS_LED",
+                                 "LAN_RUN",
+                                 "",
+                                 "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";
+};

diff --git a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
new file mode 100644 (file)
index 0000000..9403da0
--- /dev/null
+++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0
+/ {
+       aliases {
+               ethernet0 = &ethernet;
+       };
+};
+
+&usb {
+       usb-port@1 {
+               compatible = "usb424,2514";
+               reg = <1>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               usb-port@1 {
+                       compatible = "usb424,2514";
+                       reg = <1>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       ethernet: ethernet@1 {
+                               compatible = "usb424,7800";
+                               reg = <1>;
+                       };
+               };
+       };
+};