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SubjectRe: [PATCH v3 6/7] arm64: allwinner: h6: add the basical Allwinner H6 DTSI file
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于 2018年2月23日 GMT+08:00 下午11:20:38, Maxime Ripard <maxime.ripard@bootlin.com> 写到:
>On Fri, Feb 23, 2018 at 08:35:54PM +0800, Icenowy Zheng wrote:
>> Allwinner H6 is a new SoC with Cortex-A53 cores from Allwinner, with
>its
>> memory map fully reworked and some high-speed peripherals (PCIe, USB
>> 3.0) introduced.
>>
>> This commit adds the basical DTSI file of it, including the clock
>> support and UART support.
>>
>> Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
>> Reviewed-by: Andre Przywara <andre.przywara@arm.com>
>> ---
>> Changes in v3:
>> - SPDX license identifier fix.
>>
>> Changes in v2:
>> - Add APB1 clock as PIO's APB clock.
>> - Switched to SPDX license identifier.
>>
>> arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 177
>+++++++++++++++++++++++++++
>> 1 file changed, 177 insertions(+)
>> create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
>>
>> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
>b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
>> new file mode 100644
>> index 000000000000..4a6236bd9778
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
>> @@ -0,0 +1,177 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
>> +/*
>> + * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
>> + */
>> +
>> +#include <dt-bindings/interrupt-controller/arm-gic.h>
>> +#include <dt-bindings/clock/sun50i-h6-ccu.h>
>> +#include <dt-bindings/reset/sun50i-h6-ccu.h>
>> +
>> +/ {
>> + interrupt-parent = <&gic>;
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> +
>> + cpus {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + cpu0: cpu@0 {
>> + compatible = "arm,cortex-a53", "arm,armv8";
>> + device_type = "cpu";
>> + reg = <0>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu1: cpu@1 {
>> + compatible = "arm,cortex-a53", "arm,armv8";
>> + device_type = "cpu";
>> + reg = <1>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu2: cpu@2 {
>> + compatible = "arm,cortex-a53", "arm,armv8";
>> + device_type = "cpu";
>> + reg = <2>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu3: cpu@3 {
>> + compatible = "arm,cortex-a53", "arm,armv8";
>> + device_type = "cpu";
>> + reg = <3>;
>> + enable-method = "psci";
>> + };
>> + };
>> +
>> + iosc: internal-osc-clk {
>> + #clock-cells = <0>;
>> + compatible = "fixed-clock";
>> + clock-frequency = <16000000>;
>> + clock-accuracy = <300000000>;
>> + clock-output-names = "iosc";
>> + };
>
>You're not using it anywhere
>
>> + 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";
>> + };
>> +
>> + psci {
>> + compatible = "arm,psci-0.2";
>> + method = "smc";
>> + };
>
>Is it needed? The bootloader should fill it with whatever version it
>has, shouldn't it?

But we now use ATF rather than U-Boot PSCI. U-Boot will
not fill ATF info.

See A64/H5 device trees.

>
>Thanks!
>Maxime

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