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

From: Maxime Ripard
Date: Fri Dec 18 2015 - 16:41:50 EST

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>;
> + };
> +
> + 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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