Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit beebdeaa authored by Greentime Hu's avatar Greentime Hu
Browse files

nds32: Device tree support 



This patch adds support for device tree.

Signed-off-by: default avatarVincent Chen <vincentc@andestech.com>
Signed-off-by: default avatarGreentime Hu <greentime@andestech.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
parent e2f8b5c0

arch/nds32/boot/dts/Makefile

0 → 100644
+8 −0
Original line number Diff line number Diff line 
ifneq '$(CONFIG_NDS32_BUILTIN_DTB)' '""'

BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_NDS32_BUILTIN_DTB)).dtb.o

else

BUILTIN_DTB :=

endif

obj-$(CONFIG_OF) += $(BUILTIN_DTB)



clean-files := *.dtb *.dtb.S

arch/nds32/boot/dts/ae3xx.dts

0 → 100644
+85 −0
Original line number Diff line number Diff line 
/dts-v1/;

/ {

	compatible = "andestech,ae3xx";

	#address-cells = <1>;

	#size-cells = <1>;

	interrupt-parent = <&intc>;



	chosen {

		stdout-path = &serial0;

	};



	memory@0 {

		device_type = "memory";

		reg = <0x00000000 0x40000000>;

	};



	cpus {

		#address-cells = <1>;

		#size-cells = <0>;

		cpu@0 {

			device_type = "cpu";

			compatible = "andestech,n13", "andestech,nds32v3";

			reg = <0>;

			clock-frequency = <60000000>;

			next-level-cache = <&L2>;

		};

	};



	intc: interrupt-controller {

		compatible = "andestech,ativic32";

		#interrupt-cells = <1>;

		interrupt-controller;

	};



	clock: clk {

		#clock-cells = <0>;

		compatible = "fixed-clock";

		clock-frequency = <30000000>;

	};



	apb {

		compatible = "simple-bus";

		#address-cells = <1>;

		#size-cells = <1>;

		ranges;



		serial0: serial@f0300000 {

			compatible = "andestech,uart16550", "ns16550a";

			reg = <0xf0300000 0x1000>;

			interrupts = <8>;

			clock-frequency = <14745600>;

			reg-shift = <2>;

			reg-offset = <32>;

			no-loopback-test = <1>;

		};



		timer0: timer@f0400000 {

			compatible = "andestech,atcpit100";

			reg = <0xf0400000 0x1000>;

			interrupts = <2>;

			clocks = <&clock>;

			clock-names = "PCLK";

		};

	};



	ahb {

		compatible = "simple-bus";

		#address-cells = <1>;

		#size-cells = <1>;

		ranges;



		L2: cache-controller@e0500000 {

			compatible = "andestech,atl2c";

			reg = <0xe0500000 0x1000>;

			cache-unified;

			cache-level = <2>;

		};



		mac0: ethernet@e0100000 {

			compatible = "andestech,atmac100";

			reg = <0xe0100000 0x1000>;

			interrupts = <18>;

		};

	};

};

arch/nds32/kernel/devtree.c

0 → 100644
+19 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

// Copyright (C) 2005-2017 Andes Technology Corporation



#include <linux/bug.h>

#include <linux/printk.h>

#include <linux/of_fdt.h>



void __init early_init_devtree(void *params)

{

	if (!params || !early_init_dt_scan(params)) {

		pr_crit("\n"

			"Error: invalid device tree blob at (virtual address 0x%p)\n"

			"\nPlease check your bootloader.", params);



		BUG_ON(1);

	}



	dump_stack_set_arch_desc("%s (DT)", of_flat_dt_get_machine_name());

}