On Fri, Apr 13, 2018 at 07:27:53PM +0200, Stefan Wahren wrote:
> The Raspberry Pi 3 B+ has the following major differences compared
> to the model 3 B:
> * Microchip LAN7515 (Gigabit Ethernet)
> * 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 a EEPROM or a valid OTP.
>
> Signed-off-by: Phil Elwell <phil@xxxxxxxxxxxxxxx>
> Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 108 +++++++++++++++++++++++++++++
> arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi | 27 ++++++++
> 3 files changed, 136 insertions(+)
> create mode 100644 arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
> create mode 100644 arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 7e24249..a300a35 100644
> --- 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
> 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
> index 0000000..169203c
> --- /dev/null
> +++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
Why the separate file? This can be shared?
> @@ -0,0 +1,27 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/ {
> + aliases {
> + ethernet0 = ðernet;
> + };
> +};
> +
> +&usb {
> + usb1@1 {
> + compatible = "usb424,2514";
> + reg = <1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + usb1_1@1 {
usb-port@1
> + compatible = "usb424,2514";
There's really 2 levels of hubs?
> + reg = <1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + ethernet: usbether@1 {
ethernet@1
> + compatible = "usb424,7800";
> + reg = <1>;
> + };
> + };
> + };
> +};
> --
> 2.7.4
>
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