Re: [linux-sunxi] Re: [PATCH v3 2/3] ARM: dts: sun8i: Add Allwinner A83T dtsi

From: Vishnu Patekar
Date: Tue Dec 22 2015 - 04:46:00 EST

Hello Wens,

On Tue, Dec 22, 2015 at 11:12 AM, Chen-Yu Tsai <wens@xxxxxxxx> wrote:
> On Sat, Dec 19, 2015 at 5:41 AM, Maxime Ripard
> <maxime.ripard@xxxxxxxxxxxxxxxxxx> 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@xxxxxxxxx>
>>> ---
>>> 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@xxxxxxxxx>
>>> + *
>>> + * 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@01c81000 {
>>> + 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@01c20800 {
>>> + 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

I've received my Onda 989 Air based on A83T, I do not find another
UART on it, rather I did not spend enough time to find.

These nodes will help me adding nodes locally everytime I use Onda Air
using microSD Breakout Board, I request to keep those.
>
>>> +
>>> + 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@01c28000 {
>>> + 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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