From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Brugger Subject: Re: [PATCH v3 2/2] arm64: dts: Add Mediatek SoC MT2712 and evaluation board dts and Makefile Date: Fri, 16 Jun 2017 16:33:08 +0200 Message-ID: References: <1497620721-61444-1-git-send-email-yt.shen@mediatek.com> <1497620721-61444-3-git-send-email-yt.shen@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1497620721-61444-3-git-send-email-yt.shen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> Content-Language: en-US Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: YT Shen , Rob Herring Cc: Mark Rutland , Thomas Gleixner , Jason Cooper , Marc Zyngier , Greg Kroah-Hartman , Catalin Marinas , Will Deacon , Mars Cheng , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org List-Id: devicetree@vger.kernel.org On 16/06/17 15:45, YT Shen wrote: > This adds basic chip support for Mediatek 2712 > > Signed-off-by: YT Shen > --- > arch/arm64/boot/dts/mediatek/Makefile | 1 + > arch/arm64/boot/dts/mediatek/mt2712-evb.dts | 32 ++++++ > arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 166 ++++++++++++++++++++++++++++ > 3 files changed, 199 insertions(+) > create mode 100644 arch/arm64/boot/dts/mediatek/mt2712-evb.dts > create mode 100644 arch/arm64/boot/dts/mediatek/mt2712e.dtsi > > diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile > index 9fbfd32..fcc0604 100644 > --- a/arch/arm64/boot/dts/mediatek/Makefile > +++ b/arch/arm64/boot/dts/mediatek/Makefile > @@ -1,3 +1,4 @@ > +dtb-$(CONFIG_ARCH_MEDIATEK) += mt2712-evb.dtb > dtb-$(CONFIG_ARCH_MEDIATEK) += mt6755-evb.dtb > dtb-$(CONFIG_ARCH_MEDIATEK) += mt6795-evb.dtb > dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-evb.dtb > diff --git a/arch/arm64/boot/dts/mediatek/mt2712-evb.dts b/arch/arm64/boot/dts/mediatek/mt2712-evb.dts > new file mode 100644 > index 0000000..8c804df > --- /dev/null > +++ b/arch/arm64/boot/dts/mediatek/mt2712-evb.dts > @@ -0,0 +1,32 @@ > +/* > + * Copyright (c) 2017 MediaTek Inc. > + * Author: YT Shen > + * > + * SPDX-License-Identifier: (GPL-2.0 OR MIT) > + */ > + > +/dts-v1/; > +#include "mt2712e.dtsi" > + > +/ { > + model = "MediaTek MT2712 evaluation board"; > + compatible = "mediatek,mt2712-evb", "mediatek,mt2712"; > + > + aliases { > + serial0 = &uart0; > + }; > + > + memory@40000000 { > + device_type = "memory"; > + reg = <0 0x40000000 0 0x80000000>; > + }; > + > + chosen { > + stdout-path = "serial0:921600n8"; > + }; > +}; > + > +&uart0 { > + status = "okay"; > +}; > + > diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi > new file mode 100644 > index 0000000..65cdd4a > --- /dev/null > +++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi > @@ -0,0 +1,166 @@ [...] > + > + uart_clk: dummy26m { > + compatible = "fixed-clock"; > + clock-frequency = <26000000>; > + #clock-cells = <0>; > + }; > + > + timer { > + compatible = "arm,armv8-timer"; > + interrupt-parent = <&gic>; > + interrupts = + (GIC_CPU_MASK_RAW(0x13) | IRQ_TYPE_LEVEL_LOW)>, > + + (GIC_CPU_MASK_RAW(0x13) | IRQ_TYPE_LEVEL_LOW)>, > + + (GIC_CPU_MASK_RAW(0x13) | IRQ_TYPE_LEVEL_LOW)>, > + + (GIC_CPU_MASK_RAW(0x13) | IRQ_TYPE_LEVEL_LOW)>; > + }; > + > + soc { > + #address-cells = <2>; > + #size-cells = <2>; > + compatible = "simple-bus"; > + ranges; > + > + uart5: serial@1000f000 { > + compatible = "mediatek,mt2712-uart", > + "mediatek,mt6577-uart"; > + reg = <0 0x1000f000 0 0x400>; > + interrupts = ; > + clocks = <&uart_clk>; uart has two clocks, baud and bus clock. Please refer to the bindings descrption for more information, that's what they are for. Please define the two dummy clocks with the correct frequency and use them. Regards, Matthias -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html