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/*
* Copyright (C) 2017 Synopsys, Inc. (www.synopsys.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* Device Tree for ARC HS Development Kit
*/
/dts-v1/;
#include <dt-bindings/net/ti-dp83867.h>
#include <dt-bindings/reset/snps,hsdk-reset.h>
/ {
model = "snps,hsdk";
compatible = "snps,hsdk";
#address-cells = <1>;
#size-cells = <1>;
chosen {
bootargs = "earlycon=uart8250,mmio32,0xf0005000,115200n8 console=ttyS0,115200n8 debug print-fatal-signals=1";
};
aliases {
ethernet = &gmac;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
device_type = "cpu";
compatible = "snps,archs38";
reg = <0>;
clocks = <&core_clk>;
};
cpu@1 {
device_type = "cpu";
compatible = "snps,archs38";
reg = <1>;
clocks = <&core_clk>;
};
cpu@2 {
device_type = "cpu";
compatible = "snps,archs38";
reg = <2>;
clocks = <&core_clk>;
};
cpu@3 {
device_type = "cpu";
compatible = "snps,archs38";
reg = <3>;
clocks = <&core_clk>;
};
};
input_clk: input-clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <33333333>;
};
cpu_intc: cpu-interrupt-controller {
compatible = "snps,archs-intc";
interrupt-controller;
#interrupt-cells = <1>;
};
idu_intc: idu-interrupt-controller {
compatible = "snps,archs-idu-intc";
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&cpu_intc>;
};
arcpct: pct {
compatible = "snps,archs-pct";
interrupt-parent = <&cpu_intc>;
interrupts = <20>;
};
/* TIMER0 with interrupt for clockevent */
timer {
compatible = "snps,arc-timer";
interrupts = <16>;
interrupt-parent = <&cpu_intc>;
clocks = <&core_clk>;
};
/* 64-bit Global Free Running Counter */
gfrc {
compatible = "snps,archs-timer-gfrc";
clocks = <&core_clk>;
};
soc {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&idu_intc>;
ranges = <0x00000000 0xf0000000 0x10000000>;
cgu_rst: reset-controller@8a0 {
compatible = "snps,hsdk-reset";
#reset-cells = <1>;
reg = <0x8A0 0x4>, <0xFF0 0x4>;
};
core_clk: core-clk@0 {
compatible = "snps,hsdk-core-pll-clock";
reg = <0x00 0x10>, <0x14B8 0x4>;
#clock-cells = <0>;
clocks = <&input_clk>;
/*
* Set initial core pll output frequency to 1GHz.
* It will be applied at the core pll driver probing
* on early boot.
*/
assigned-clocks = <&core_clk>;
assigned-clock-rates = <1000000000>;
};
serial: serial@5000 {
compatible = "snps,dw-apb-uart";
reg = <0x5000 0x100>;
clock-frequency = <33330000>;
interrupts = <6>;
baud = <115200>;
reg-shift = <2>;
reg-io-width = <4>;
};
gmacclk: gmacclk {
compatible = "fixed-clock";
clock-frequency = <400000000>;
#clock-cells = <0>;
};
mmcclk_ciu: mmcclk-ciu {
compatible = "fixed-clock";
/*
* DW sdio controller has external ciu clock divider
* controlled via register in SDIO IP. Due to its
* unexpected default value (it should divide by 1
* but it divides by 8) SDIO IP uses wrong clock and
* works unstable (see STAR 9001204800)
* We switched to the minimum possible value of the
* divisor (div-by-2) in HSDK platform code.
* So add temporary fix and change clock frequency
* to 50000000 Hz until we fix dw sdio driver itself.
*/
clock-frequency = <50000000>;
#clock-cells = <0>;
};
mmcclk_biu: mmcclk-biu {
compatible = "fixed-clock";
clock-frequency = <400000000>;
#clock-cells = <0>;
};
gmac: ethernet@8000 {
#interrupt-cells = <1>;
compatible = "snps,dwmac";
reg = <0x8000 0x2000>;
interrupts = <10>;
interrupt-names = "macirq";
phy-mode = "rgmii-id";
snps,pbl = <32>;
snps,multicast-filter-bins = <256>;
clocks = <&gmacclk>;
clock-names = "stmmaceth";
phy-handle = <&phy0>;
resets = <&cgu_rst HSDK_ETH_RESET>;
reset-names = "stmmaceth";
mac-address = [00 00 00 00 00 00]; /* Filled in by U-Boot */
dma-coherent;
tx-fifo-depth = <4096>;
rx-fifo-depth = <4096>;
mdio {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
phy0: ethernet-phy@0 { /* Micrel KSZ9031 */
reg = <0>;
ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
};
};
};
ohci@60000 {
compatible = "snps,hsdk-v1.0-ohci", "generic-ohci";
reg = <0x60000 0x100>;
interrupts = <15>;
dma-coherent;
};
ehci@40000 {
compatible = "snps,hsdk-v1.0-ehci", "generic-ehci";
reg = <0x40000 0x100>;
interrupts = <15>;
dma-coherent;
};
mmc@a000 {
compatible = "altr,socfpga-dw-mshc";
reg = <0xa000 0x400>;
num-slots = <1>;
fifo-depth = <16>;
card-detect-delay = <200>;
clocks = <&mmcclk_biu>, <&mmcclk_ciu>;
clock-names = "biu", "ciu";
interrupts = <12>;
bus-width = <4>;
dma-coherent;
};
};
memory@80000000 {
#address-cells = <1>;
#size-cells = <1>;
device_type = "memory";
reg = <0x80000000 0x40000000>; /* 1 GiB */
};
};
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