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219018185e
It appears that the CFE boot loader found in the XG6846 cannot load kernels over a certain size, and the old relocate hack is not working. What to do? We can build a small U-Boot into the image, make CFE boot that, place the kernel immediately after U-Boot, and use U-Boot to boot the system instead. The compiled u-boot.bin becomes around ~300KB and with LZMA compression it will swiftly fit into 128KB, so we use two 64KB erase blocks right after the CFE to store an imagetag:ed U-Boot. Reviewed-by: Paul Donald <newtwen+github@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
314 lines
6.2 KiB
Plaintext
314 lines
6.2 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/dts-v1/;
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/*
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* Devicetree for the Inteno XG6846 router, mostly used as a
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* media converter from fiber to twisted pair ethernet
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* "fiber modem" in many households in Sweden. The Marvell
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* switch has one of its ports connected to an SFP (Small Form
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* Factor pluggable) optical fiber receiver, which is bridged
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* to the twisted pair connector LAN1.
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*
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* This device tree is inspired by research from the OpenWrt
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* and Sweclockers forums, including contributions from
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* NPeca75, mrhaav and csom.
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*
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* Some devices have a USB type A host receptacle mounted,
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* some do not.
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*/
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#include "bcm6328.dtsi"
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#include <dt-bindings/input/input.h>
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#include <dt-bindings/gpio/gpio.h>
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/ {
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model = "Inteno XG6846";
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compatible = "inteno,xg6846", "brcm,bcm6328";
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/* OpenWrt-specific aliases */
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aliases {
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led-boot = &led_pwr_red;
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led-failsafe = &led_pwr_red;
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led-running = &led_pwr_green;
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led-upgrade = &led_pwr_red;
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led-usb = &led_usb_green;
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};
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chosen {
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bootargs = "rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200";
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stdout-path = "serial0:115200n8";
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};
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/*
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* This I2C port is connected to the SFP and reflects the EEPROM etc
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* inside the SFP module. If the module is not plugged in, consequently
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* nothing will be found on the bus.
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*/
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i2c0: i2c-sfp {
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compatible = "i2c-gpio";
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sda-gpios = <&gpio 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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#address-cells = <1>;
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#size-cells = <0>;
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};
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/* This I2C bus is used for the external CATV connector (usually unused) */
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i2c1: i2c-catv {
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compatible = "i2c-gpio";
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sda-gpios = <&gpio 23 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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scl-gpios = <&gpio 7 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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#address-cells = <1>;
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#size-cells = <0>;
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};
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sfp0: sfp0 {
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compatible = "sff,sfp";
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i2c-bus = <&i2c0>;
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los-gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
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};
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keys {
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compatible = "gpio-keys-polled";
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#address-cells = <1>;
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#size-cells = <0>;
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poll-interval = <20>;
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reset {
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label = "reset";
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gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
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linux,code = <KEY_RESTART>;
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debounce-interval = <60>;
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};
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};
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};
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&hsspi {
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status = "okay";
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flash@0 {
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compatible = "jedec,spi-nor";
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/*
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* HW 1.0-1.1: Spansion S25FL128S1
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* HW 1.3: Winbond W25Q128
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*
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* Fast Read Data max speed is 50MHz, see the Winbond W25Q128
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* datasheet table 9.5 "AC Electrical Characteristics", we can
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* use this speed because the chip supports fast reads. Older
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* HW has different NOR chips, I assume they can all do fast
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* reads.
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*/
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spi-max-frequency = <104000000>;
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spi-tx-bus-width = <2>;
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spi-rx-bus-width = <2>;
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m25p,fast-read;
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reg = <0>;
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#address-cells = <1>;
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#size-cells = <1>;
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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cfe: partition@0 {
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label = "cfe";
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reg = <0x0000000 0x0010000>;
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read-only;
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};
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partition@10000 {
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compatible = "openwrt,uimage", "denx,uimage";
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reg = <0x010000 0xfe0000>;
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label = "firmware";
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openwrt,offset = <0x30000>;
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};
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partition@ff0000 {
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reg = <0xff0000 0x010000>;
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label = "nvram";
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};
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};
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};
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};
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&cfe {
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compatible = "nvmem-cells";
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#address-cells = <1>;
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#size-cells = <1>;
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macaddr_cfe_6a0: macaddr@6a0 {
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reg = <0x6a0 0x6>;
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};
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};
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ðernet {
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status = "okay";
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nvmem-cells = <&macaddr_cfe_6a0>;
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nvmem-cell-names = "mac-address";
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};
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&switch0 {
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dsa,member = <0 0>;
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ports {
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switch0port4: port@4 {
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reg = <4>;
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label = "extsw";
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phy-mode = "rgmii";
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fixed-link {
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speed = <1000>;
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full-duplex;
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};
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};
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};
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};
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&mdio_ext {
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switch1: switch@0 {
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/* The switch is not using any external IRQ, sadly */
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compatible = "marvell,mv88e6085";
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0>;
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interrupt-controller;
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#interrupt-cells = <2>;
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dsa,member = <1 0>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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label = "lan1";
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phy-handle = <&lan1phy>;
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};
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port@1 {
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reg = <1>;
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label = "lan2";
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phy-handle = <&lan2phy>;
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};
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port@2 {
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reg = <2>;
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label = "lan3";
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phy-handle = <&lan3phy>;
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};
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port@3 {
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reg = <3>;
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label = "lan4";
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phy-handle = <&lan4phy>;
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};
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port@4 {
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reg = <4>;
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label = "ext1";
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phy-handle = <&ext1phy>;
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};
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port@5 {
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reg = <5>;
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phy-mode = "rgmii-id";
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label = "wan";
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sfp = <&sfp0>;
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fixed-link {
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speed = <1000>;
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full-duplex;
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};
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};
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port@6 {
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reg = <6>;
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phy-mode = "rgmii-id";
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label = "cpu";
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ethernet = <&switch0port4>;
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fixed-link {
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speed = <1000>;
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full-duplex;
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};
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};
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};
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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lan1phy: ethernet-phy@0 {
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reg = <0>;
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interrupt-parent = <&switch1>;
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interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
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};
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lan2phy: ethernet-phy@1 {
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reg = <1>;
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interrupt-parent = <&switch1>;
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interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
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};
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lan3phy: ethernet-phy@2 {
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reg = <2>;
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interrupt-parent = <&switch1>;
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interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
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};
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lan4phy: ethernet-phy@3 {
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reg = <3>;
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interrupt-parent = <&switch1>;
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interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
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};
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ext1phy: ethernet-phy@4 {
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reg = <4>;
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interrupt-parent = <&switch1>;
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interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
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};
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};
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};
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};
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&uart0 {
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status = "okay";
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};
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&pinctrl {
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pinctrl_xg6846_usb_spd_led: xg6846_usb_spd_led-pins {
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function = "led";
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pins = "gpio17";
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};
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};
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&leds {
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status = "okay";
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_xg6846_usb_spd_led>, /* GPIO16 LED USB */
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<&pinctrl_ephy1_spd_led>, /* GPIO18 LED PWR red */
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<&pinctrl_ephy3_spd_led>; /* GPIO20 LED PWR green */
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/* On board variants without USB this LED is not mounted */
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led_usb_green: led@16 {
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reg = <16>;
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active-low;
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label = "green:usb";
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default-state = "off";
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};
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/*
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* LED 18 and 20 drive the same physical LED, the PWR
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* LED that can be both red and green.
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*/
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led_pwr_red: led@18 {
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reg = <18>;
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active-low;
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label = "red:pwr";
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default-state = "off";
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};
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led_pwr_green: led@20 {
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reg = <20>;
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active-low;
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label = "green:pwr";
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default-state = "off";
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};
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};
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