mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 08:04:06 +07:00
a252ccd3d2
The first 128 MiB of RAM can be accessed using an alias at address 0x0. In theory we could access whole RAM using 0x80000000 - 0xbfffffff range (up to 1 GiB) but it doesn't seem to work on Northstar. For some reason (hardware setup left by the bootloader maybe?) 0x80000000 - 0x87ffffff range can't be used. I reproduced this problem on: 1) Buffalo WZR-600DHP2 (BCM47081) 2) Netgear R6250 (BCM4708) 3) D-Link DIR-885L (BCM47094) So it seems we're forced to access first 128 MiB using alias at 0x0 and the rest using real base address + 128 MiB offset which is 0x88000000. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Jon Mason <jon.mason@broadcom.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
151 lines
2.8 KiB
Plaintext
151 lines
2.8 KiB
Plaintext
/*
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* Broadcom BCM470X / BCM5301X ARM platform code.
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* DTS for Buffalo WZR-1750DHP
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*
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* Copyright (C) 2014 Rafał Miłecki <zajec5@gmail.com>
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*
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* Licensed under the GNU/GPL. See COPYING for details.
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*/
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/dts-v1/;
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#include "bcm4708.dtsi"
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#include "bcm5301x-nand-cs0-bch8.dtsi"
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/ {
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compatible = "buffalo,wzr-1750dhp", "brcm,bcm4708";
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model = "Buffalo WZR-1750DHP (BCM4708)";
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chosen {
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bootargs = "console=ttyS0,115200 earlycon";
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};
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memory {
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reg = <0x00000000 0x08000000
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0x88000000 0x18000000>;
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};
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spi {
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compatible = "spi-gpio";
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num-chipselects = <1>;
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gpio-sck = <&chipcommon 7 0>;
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gpio-mosi = <&chipcommon 4 0>;
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cs-gpios = <&chipcommon 6 0>;
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#address-cells = <1>;
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#size-cells = <0>;
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hc595: gpio_spi@0 {
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compatible = "fairchild,74hc595";
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reg = <0>;
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registers-number = <1>;
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spi-max-frequency = <100000>;
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gpio-controller;
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#gpio-cells = <2>;
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};
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};
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leds {
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compatible = "gpio-leds";
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usb {
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label = "bcm53xx:blue:usb";
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gpios = <&hc595 0 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-off";
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};
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power0 {
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label = "bcm53xx:red:power";
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gpios = <&hc595 1 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-off";
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};
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power1 {
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label = "bcm53xx:white:power";
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gpios = <&hc595 2 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-on";
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};
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router0 {
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label = "bcm53xx:blue:router";
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gpios = <&hc595 3 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-on";
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};
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router1 {
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label = "bcm53xx:amber:router";
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gpios = <&hc595 4 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-off";
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};
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wan {
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label = "bcm53xx:blue:wan";
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gpios = <&hc595 5 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-on";
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};
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wireless0 {
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label = "bcm53xx:blue:wireless";
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gpios = <&hc595 6 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-off";
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};
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wireless1 {
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label = "bcm53xx:amber:wireless";
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gpios = <&hc595 7 GPIO_ACTIVE_HIGH>;
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linux,default-trigger = "default-off";
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};
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};
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gpio-keys {
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compatible = "gpio-keys";
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#address-cells = <1>;
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#size-cells = <0>;
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restart {
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label = "Reset";
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linux,code = <KEY_RESTART>;
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gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
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};
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aoss {
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label = "AOSS";
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linux,code = <KEY_WPS_BUTTON>;
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gpios = <&chipcommon 12 GPIO_ACTIVE_LOW>;
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};
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/* Commit mode set by switch? */
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mode {
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label = "Mode";
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linux,code = <KEY_SETUP>;
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gpios = <&chipcommon 13 GPIO_ACTIVE_LOW>;
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};
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/* Switch: AP mode */
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sw_ap {
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label = "AP";
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linux,code = <BTN_0>;
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gpios = <&chipcommon 14 GPIO_ACTIVE_LOW>;
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};
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eject {
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label = "USB eject";
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linux,code = <KEY_EJECTCD>;
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gpios = <&chipcommon 15 GPIO_ACTIVE_LOW>;
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};
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};
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};
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&usb2 {
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vcc-gpio = <&chipcommon 9 GPIO_ACTIVE_HIGH>;
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};
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&usb3 {
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vcc-gpio = <&chipcommon 10 GPIO_ACTIVE_LOW>;
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};
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&spi_nor {
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status = "okay";
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};
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