Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932928AbdLRHNp (ORCPT ); Mon, 18 Dec 2017 02:13:45 -0500 Received: from mail-pl0-f66.google.com ([209.85.160.66]:34914 "EHLO mail-pl0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932879AbdLRHNl (ORCPT ); Mon, 18 Dec 2017 02:13:41 -0500 X-Google-Smtp-Source: ACJfBouwnlOD2ISBtOv5pmBpazL2Q6CvbsT8iccQWEKZ+gvhC+FRDOQfjMeS3GLKSMwbbxoQo0OjSg== From: Greentime Hu To: greentime@andestech.com, linux-kernel@vger.kernel.org, arnd@arndb.de, linux-arch@vger.kernel.org, tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com, robh+dt@kernel.org, netdev@vger.kernel.org, deanbo422@gmail.com, devicetree@vger.kernel.org, viro@zeniv.linux.org.uk, dhowells@redhat.com, will.deacon@arm.com, daniel.lezcano@linaro.org, linux-serial@vger.kernel.org, geert.uytterhoeven@gmail.com, linus.walleij@linaro.org, mark.rutland@arm.com, greg@kroah.com, ren_guo@c-sky.com, pombredanne@nexb.com Cc: green.hu@gmail.com, Vincent Chen Subject: [PATCH v4 24/36] nds32: Device tree support Date: Mon, 18 Dec 2017 14:46:36 +0800 Message-Id: <8e4350bd85cada3eec445568d95bab06a9cbe9ef.1513577007.git.green.hu@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3056 Lines: 127 From: Greentime Hu This patch adds support for device tree. Signed-off-by: Vincent Chen Signed-off-by: Greentime Hu --- arch/nds32/boot/dts/Makefile | 8 +++++ arch/nds32/boot/dts/ae3xx.dts | 65 +++++++++++++++++++++++++++++++++++++++++ arch/nds32/kernel/devtree.c | 19 ++++++++++++ 3 files changed, 92 insertions(+) create mode 100644 arch/nds32/boot/dts/Makefile create mode 100644 arch/nds32/boot/dts/ae3xx.dts create mode 100644 arch/nds32/kernel/devtree.c diff --git a/arch/nds32/boot/dts/Makefile b/arch/nds32/boot/dts/Makefile new file mode 100644 index 0000000..d31faa8 --- /dev/null +++ b/arch/nds32/boot/dts/Makefile @@ -0,0 +1,8 @@ +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 diff --git a/arch/nds32/boot/dts/ae3xx.dts b/arch/nds32/boot/dts/ae3xx.dts new file mode 100644 index 0000000..0ef2c44 --- /dev/null +++ b/arch/nds32/boot/dts/ae3xx.dts @@ -0,0 +1,65 @@ +/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>; + }; + }; + + apb: clk@0 { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <30000000>; + }; + + + intc: interrupt-controller { + compatible = "andestech,ativic32"; + #interrupt-cells = <1>; + interrupt-controller; + }; + + 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 = <&apb>; + clock-names = "PCLK"; + }; + + mac0: mac@e0100000 { + compatible = "andestech,atmac100"; + reg = <0xe0100000 0x1000>; + interrupts = <18>; + }; + +}; diff --git a/arch/nds32/kernel/devtree.c b/arch/nds32/kernel/devtree.c new file mode 100644 index 0000000..bdce0fe --- /dev/null +++ b/arch/nds32/kernel/devtree.c @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#include +#include +#include + +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()); +} -- 1.7.9.5