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Message-ID: <CAGb2v67DA=i8J0bzkOJvqE6-yE1ZF2KBVBVH+Cm02NVsF4zVvw@mail.gmail.com>
Date: Tue, 22 Dec 2015 11:12:20 +0800
From: Chen-Yu Tsai <wens@...e.org>
To: Vishnu Patekar <vishnupatekar0510@...il.com>
Cc: Maxime Ripard <maxime.ripard@...e-electrons.com>,
Rob Herring <robh+dt@...nel.org>, corbet@....net,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Russell King - ARM Linux <linux@....linux.org.uk>,
Emilio Lopez <emilio@...pez.com.ar>,
Linus Walleij <linus.walleij@...aro.org>,
Jens Kuske <jenskuske@...il.com>,
Hans De Goede <hdegoede@...hat.com>,
Chen-Yu Tsai <wens@...e.org>,
devicetree <devicetree@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
linux-sunxi <linux-sunxi@...glegroups.com>,
"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH v3 2/3] ARM: dts: sun8i: Add Allwinner A83T dtsi
On Sat, Dec 19, 2015 at 5:41 AM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> Hi,
>
> On Fri, Dec 18, 2015 at 09:30:50PM +0800, Vishnu Patekar wrote:
>> Allwinner A83T is new octa-core cortex-a7 SOC.
>> This adds the basic dtsi, the clocks differs from
>> earlier sun8i SOCs.
>>
>> Signed-off-by: Vishnu Patekar <vishnupatekar0510@...il.com>
>> ---
>> arch/arm/boot/dts/sun8i-a83t.dtsi | 206 ++++++++++++++++++++++++++++++++++++++
>> 1 file changed, 206 insertions(+)
>> create mode 100644 arch/arm/boot/dts/sun8i-a83t.dtsi
>>
>> diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi
>> new file mode 100644
>> index 0000000..e577c64
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun8i-a83t.dtsi
>> @@ -0,0 +1,206 @@
>> +/*
>> + * Copyright 2015 Vishnu Patekar
>> + *
>> + * Vishnu Patekar <vishnupatekar0510@...il.com>
>> + *
>> + * This file is dual-licensed: you can use it either under the terms
>> + * of the GPL or the X11 license, at your option. Note that this dual
>> + * licensing only applies to this file, and not this project as a
>> + * whole.
>> + *
>> + * a) This file is free software; you can redistribute it and/or
>> + * modify it under the terms of the GNU General Public License as
>> + * published by the Free Software Foundation; either version 2 of the
>> + * License, or (at your option) any later version.
>> + *
>> + * This file is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + *
>> + * Or, alternatively,
>> + *
>> + * b) Permission is hereby granted, free of charge, to any person
>> + * obtaining a copy of this software and associated documentation
>> + * files (the "Software"), to deal in the Software without
>> + * restriction, including without limitation the rights to use,
>> + * copy, modify, merge, publish, distribute, sublicense, and/or
>> + * sell copies of the Software, and to permit persons to whom the
>> + * Software is furnished to do so, subject to the following
>> + * conditions:
>> + *
>> + * The above copyright notice and this permission notice shall be
>> + * included in all copies or substantial portions of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
>> + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
>> + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
>> + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + * OTHER DEALINGS IN THE SOFTWARE.
>> +
>> + */
>> +
>> +#include "skeleton.dtsi"
>> +
>> +#include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +#include <dt-bindings/pinctrl/sun4i-a10.h>
>> +
>> +/ {
>> + interrupt-parent = <&gic>;
>> +
>> + chosen {
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + ranges;
>> + };
>> +
>> + cpus {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + cpu@0 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <0>;
>> + };
>> +
>> + cpu@1 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <1>;
>> + };
>> +
>> + cpu@2 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <2>;
>> + };
>> +
>> + cpu@3 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <3>;
>> + };
>
> A \n here please
>
>> + cpu@100 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <0x100>;
>> + };
>> +
>> + cpu@101 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <0x101>;
>> + };
>
> Ditto.
>
>> + cpu@102 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <0x102>;
>> + };
>> +
>> + cpu@103 {
>> + compatible = "arm,cortex-a7";
>> + device_type = "cpu";
>> + reg = <0x103>;
>> + };
>> + };
>> +
>> + memory {
>> + reg = <0x40000000 0x80000000>;
>> + };
>
> Is mainline u-boot usable ? If so, you can remove that node entirely.
>
>> +
>> + timer {
>> + compatible = "arm,armv7-timer";
>> + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
>> + };
>> +
>> + clocks {
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + ranges;
>> +
>> + osc24M: osc24M_clk {
>> + #clock-cells = <0>;
>> + compatible = "fixed-clock";
>> + clock-frequency = <24000000>;
>> + clock-output-names = "osc24M";
>> + };
>> +
>> + osc32k: osc32k_clk {
>> + #clock-cells = <0>;
>> + compatible = "fixed-clock";
>> + clock-frequency = <32768>;
>> + clock-output-names = "osc32k";
>> + };
>
> Do you need to modify the clocks driver in your first commit then?
>
>> + };
>> +
>> + soc {
>> + compatible = "simple-bus";
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> + ranges;
>> +
>> + gic: interrupt-controller@...81000 {
>> + compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic";
>> + reg = <0x01c81000 0x1000>,
>> + <0x01c82000 0x1000>,
>> + <0x01c84000 0x2000>,
>> + <0x01c86000 0x2000>;
>
> Please order the nodes by ascending physical addresses.
>
>> + interrupt-controller;
>> + #interrupt-cells = <3>;
>> + interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_HIGH)>;
>> + };
>> +
>> + pio: pinctrl@...20800 {
>> + compatible = "allwinner,sun8i-a83t-pinctrl";
>> + interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>,
>> + <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
>> + <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
>> + reg = <0x01c20800 0x400>;
>> + clocks = <&osc24M>;
>> + gpio-controller;
>> + interrupt-controller;
>> + #interrupt-cells = <3>;
>> + #gpio-cells = <3>;
>> +
>> + mmc0_pins_a: mmc0@0 {
>> + allwinner,pins = "PF0", "PF1", "PF2",
>> + "PF3", "PF4", "PF5";
>> + allwinner,function = "mmc0";
>> + allwinner,drive = <SUN4I_PINCTRL_30_MA>;
>> + allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
>> + };
>> +
>> + uart0_pins_a: uart0@0 {
>> + allwinner,pins = "PF2", "PF4";
>> + allwinner,function = "uart0";
>> + allwinner,drive = <SUN4I_PINCTRL_10_MA>;
>> + allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
>> + };
I don't see much use for the UART0 PF pins once we have mmc working.
ChenYu
>> +
>> + uart0_pins_b: uart0@1 {
>> + allwinner,pins = "PB9", "PB10";
>> + allwinner,function = "uart0";
>> + allwinner,drive = <SUN4I_PINCTRL_10_MA>;
>> + allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
>> + };
>> + };
>> +
>> + uart0: serial@...28000 {
>> + compatible = "snps,dw-apb-uart";
>> + reg = <0x01c28000 0x400>;
>> + interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
>> + reg-shift = <2>;
>> + reg-io-width = <4>;
>> + clocks = <&osc24M>;
>> + status = "disabled";
>> + };
>> + };
>> +};
>
> Thanks!
> Maxime
>
> --
> Maxime Ripard, Free Electrons
> Embedded Linux, Kernel and Android engineering
> http://free-electrons.com
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