Re: [PATCH V2 1/3] arm64: dts: Add basic DT to support Spreadtrum's SP9860G

From: Mathieu Poirier
Date: Wed Feb 22 2017 - 11:10:22 EST

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On 21 February 2017 at 20:46, Chunyan Zhang
<chunyan.zhang@xxxxxxxxxxxxxx> wrote:
> Hello Mathieu,
>
> On ä, 2æ 21, 2017 at 09:27:44äå -0700, Mathieu Poirier wrote:
>> On Tue, Feb 21, 2017 at 02:55:02PM +0800, Chunyan Zhang wrote:
>> > From: Orson Zhai <orson.zhai@xxxxxxxxxxxxxx>
>>
>> Hello Chunyan,
>>
>> >
>> > SC9860G is a 8 cores of A53 SoC with 4G LTE support SoC from Spreadtrum.
>> >
>> > According to regular hierarchy of sprd dts, whale2.dtsi contains SoC
>> > peripherals IP nodes, sc9860.dtsi contains stuff related to ARM core stuff
>> > and sp9860g dts is for the board level.
>> >
>> > Signed-off-by: Orson Zhai <orson.zhai@xxxxxxxxxxxxxx>
>> > Signed-off-by: Chunyan Zhang <chunyan.zhang@xxxxxxxxxxxxxx>
>> > ---
>> > arch/arm64/boot/dts/sprd/Makefile | 3 +-
>> > arch/arm64/boot/dts/sprd/sc9860.dtsi | 531 ++++++++++++++++++++++++++++++
>> > arch/arm64/boot/dts/sprd/sp9860g-1h10.dts | 56 ++++
>> > arch/arm64/boot/dts/sprd/whale2.dtsi | 70 ++++
>> > 4 files changed, 659 insertions(+), 1 deletion(-)
>> > create mode 100644 arch/arm64/boot/dts/sprd/sc9860.dtsi
>> > create mode 100644 arch/arm64/boot/dts/sprd/sp9860g-1h10.dts
>> > create mode 100644 arch/arm64/boot/dts/sprd/whale2.dtsi
>> >
>> > diff --git a/arch/arm64/boot/dts/sprd/Makefile b/arch/arm64/boot/dts/sprd/Makefile
>> > index b658c5e..f0535e6 100644
>> > --- a/arch/arm64/boot/dts/sprd/Makefile
>> > +++ b/arch/arm64/boot/dts/sprd/Makefile
>> > @@ -1,4 +1,5 @@
>> > -dtb-$(CONFIG_ARCH_SPRD) += sc9836-openphone.dtb
>> > +dtb-$(CONFIG_ARCH_SPRD) += sc9836-openphone.dtb \
>> > + sp9860g-1h10.dtb
>> >
>> > always := $(dtb-y)
>> > subdir-y := $(dts-dirs)
>> > diff --git a/arch/arm64/boot/dts/sprd/sc9860.dtsi b/arch/arm64/boot/dts/sprd/sc9860.dtsi
>> > new file mode 100644
>> > index 0000000..73deb4e
>> > --- /dev/null
>> > +++ b/arch/arm64/boot/dts/sprd/sc9860.dtsi
>> > @@ -0,0 +1,531 @@
>> > +/*
>> > + * Spreadtrum SP9860 SoC DTS file
>> > + *
>> > + * Copyright (C) 2016, Spreadtrum Communications Inc.
>> > + *
>> > + * This file is licensed under a dual GPLv2 or X11 license.
>> > + */
>> > +
>> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
>> > +#include "whale2.dtsi"
>> > +
>> > +/ {
>> > + cpus {
>> > + #address-cells = <2>;
>> > + #size-cells = <0>;
>> > +
>> > + cpu-map {
>> > + cluster0 {
>> > + core0 {
>> > + cpu = <&CPU0>;
>> > + };
>> > + core1 {
>> > + cpu = <&CPU1>;
>> > + };
>> > + core2 {
>> > + cpu = <&CPU2>;
>> > + };
>> > + core3 {
>> > + cpu = <&CPU3>;
>> > + };
>> > + };
>> > +
>> > + cluster1 {
>> > + core0 {
>> > + cpu = <&CPU4>;
>> > + };
>> > + core1 {
>> > + cpu = <&CPU5>;
>> > + };
>> > + core2 {
>> > + cpu = <&CPU6>;
>> > + };
>> > + core3 {
>> > + cpu = <&CPU7>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + CPU0: cpu@530000 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530000>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > +
>> > + CPU1: cpu@530001 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530001>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > +
>> > + CPU2: cpu@530002 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530002>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > +
>> > + CPU3: cpu@530003 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530003>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > +
>> > + CPU4: cpu@530100 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530100>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > +
>> > + CPU5: cpu@530101 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530101>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > +
>> > + CPU6: cpu@530102 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530102>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > +
>> > + CPU7: cpu@530103 {
>> > + device_type = "cpu";
>> > + compatible = "arm,cortex-a53", "arm,armv8";
>> > + reg = <0x0 0x530103>;
>> > + enable-method = "psci";
>> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
>> > + };
>> > + };
>> > +
>> > + idle-states{
>> > + entry-method = "arm,psci";
>> > +
>> > + CORE_PD: core_pd {
>> > + compatible = "arm,idle-state";
>> > + entry-latency-us = <1000>;
>> > + exit-latency-us = <700>;
>> > + min-residency-us = <2500>;
>> > + local-timer-stop;
>> > + arm,psci-suspend-param = <0x00010002>;
>> > + };
>> > +
>> > + CLUSTER_PD: cluster_pd {
>> > + compatible = "arm,idle-state";
>> > + entry-latency-us = <1000>;
>> > + exit-latency-us = <1000>;
>> > + min-residency-us = <3000>;
>> > + local-timer-stop;
>> > + arm,psci-suspend-param = <0x01010003>;
>> > + };
>> > + };
>> > +
>> > + gic: interrupt-controller@12001000 {
>> > + compatible = "arm,gic-400";
>> > + reg = <0 0x12001000 0 0x1000>,
>> > + <0 0x12002000 0 0x2000>,
>> > + <0 0x12004000 0 0x2000>,
>> > + <0 0x12006000 0 0x2000>;
>> > + #interrupt-cells = <3>;
>> > + interrupt-controller;
>> > + interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(8)
>> > + | IRQ_TYPE_LEVEL_HIGH)>;
>> > + };
>> > +
>> > + psci {
>> > + compatible = "arm,psci-0.2";
>> > + method = "smc";
>> > + };
>> > +
>> > + timer {
>> > + compatible = "arm,armv8-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)>;
>> > + };
>> > +
>> > + pmu {
>> > + compatible = "arm,cortex-a53-pmu", "arm,armv8-pmuv3";
>> > + interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
>> > + <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
>> > + <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
>> > + <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
>> > + <GIC_SPI 154 IRQ_TYPE_LEVEL_HIGH>,
>> > + <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>,
>> > + <GIC_SPI 156 IRQ_TYPE_LEVEL_HIGH>,
>> > + <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>;
>> > + interrupt-affinity = <&CPU0>,
>> > + <&CPU1>,
>> > + <&CPU2>,
>> > + <&CPU3>,
>> > + <&CPU4>,
>> > + <&CPU5>,
>> > + <&CPU6>,
>> > + <&CPU7>;
>> > + };
>> > +
>> > + soc {
>> > + soc_funnel: funnel@10001000 {
>>
>> There is no need for a label ("soc_funnel) before the device name if that
>> device is not referenced elsewhere in the DTS. The same comment applies to most
>> of the component listed below.
>>
>
> OK, I will remove these labels from this DT.
> And there's another issue I'd like to discuss with you, do you think which way is better:
> 1) use class name which can represent this kind of components as device node name in DT, e.g.
> funnel@... {
>
> }
> replicator@... {
>
> }
> etb@... {
>
> }
> etf@...
> etm@...
> stm@...
>
> 2) use more descriptive device name for those which are more than one on
> a SoC, e.g.
> soc-funnel@... {
>
> }
> cluster0-funnel@... {
>
> }
> cluster1-funnel@... {
>
> }
>
> I noticed Juno use the 2), would you suggest that way?

It is better to describe the HW component themselves rather than where
they are in the topology - the address of the component will make sure
the names are unique. So just the component type (etm, funnel,
replicator, ....) and the address they are located at.

>
> Thanks,
> Chunyan
>
>> > + compatible = "arm,coresight-funnel", "arm,primecell";
>> > + reg = <0 0x10001000 0 0x1000>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > + ports {
>> > + #address-cells = <1>;
>> > + #size-cells = <0>;
>> > +
>> > + port@0 {
>> > + reg = <0>;
>> > + soc_funnel_out_port: endpoint {
>> > + remote-endpoint = <&etb_in>;
>> > + };
>> > + };
>> > +
>> > + port@1 {
>> > + reg = <0>;
>> > + soc_funnel_in_port: endpoint {
>> > + slave-mode;
>> > + remote-endpoint =
>> > + <&main_funnel_out_port>;
>> > + };
>> > + };
>> > + };
>> > + };
>> > +
>> > + etb@10003000 {
>> > + compatible = "arm,coresight-tmc", "arm,primecell";
>> > + reg = <0 0x10003000 0 0x1000>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > + port {
>> > + etb_in: endpoint {
>> > + slave-mode;
>> > + remote-endpoint =
>> > + <&soc_funnel_out_port>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + cluster0_funnel: funnel@11001000 {
>> > + compatible = "arm,coresight-funnel", "arm,primecell";
>> > + reg = <0 0x11001000 0 0x1000>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > + ports {
>> > + #address-cells = <1>;
>> > + #size-cells = <0>;
>> > +
>> > + port@0 {
>> > + reg = <0>;
>> > + cluster0_funnel_out_port: endpoint {
>> > + remote-endpoint =
>> > + <&cluster0_etf_in>;
>> > + };
>> > + };
>> > +
>> > + port@1 {
>> > + reg = <0>;
>> > + cluster0_funnel_in_port0: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm0_out>;
>> > + };
>> > + };
>> > +
>> > + port@2 {
>> > + reg = <1>;
>> > + cluster0_funnel_in_port1: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm1_out>;
>> > + };
>> > + };
>> > +
>> > + port@3 {
>> > + reg = <2>;
>> > + cluster0_funnel_in_port2: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm2_out>;
>> > + };
>> > + };
>> > +
>> > + port@4 {
>> > + reg = <4>;
>> > + cluster0_funnel_in_port3: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm3_out>;
>> > + };
>> > + };
>> > + };
>> > + };
>> > +
>> > + cluster1_funnel: funnel@11002000 {
>> > + compatible = "arm,coresight-funnel", "arm,primecell";
>> > + reg = <0 0x11002000 0 0x1000>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > + ports {
>> > + #address-cells = <1>;
>> > + #size-cells = <0>;
>> > +
>> > + port@0 {
>> > + reg = <0>;
>> > + cluster1_funnel_out_port: endpoint {
>> > + remote-endpoint =
>> > + <&cluster1_etf_in>;
>> > + };
>> > + };
>> > +
>> > + port@1 {
>> > + reg = <0>;
>> > + cluster1_funnel_in_port0: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm4_out>;
>> > + };
>> > + };
>> > +
>> > + port@2 {
>> > + reg = <1>;
>> > + cluster1_funnel_in_port1: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm5_out>;
>> > + };
>> > + };
>> > +
>> > + port@3 {
>> > + reg = <2>;
>> > + cluster1_funnel_in_port2: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm6_out>;
>> > + };
>> > + };
>> > +
>> > + port@4 {
>> > + reg = <3>;
>> > + cluster1_funnel_in_port3: endpoint {
>> > + slave-mode;
>> > + remote-endpoint = <&etm7_out>;
>> > + };
>> > + };
>> > + };
>> > + };
>> > +
>> > + cluster0_etf: etf@11003000 {
>> > + compatible = "arm,coresight-tmc", "arm,primecell";
>> > + reg = <0 0x11003000 0 0x1000>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port@0 {
>> > + cluster0_etf_out: endpoint {
>> > + remote-endpoint =
>> > + <&main_funnel_in_port0>;
>> > + };
>> > + };
>> > +
>> > + port@1 {
>> > + cluster0_etf_in: endpoint {
>> > + slave-mode;
>> > + remote-endpoint =
>> > + <&cluster0_funnel_out_port>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + cluster1_etf: etf@11004000 {
>> > + compatible = "arm,coresight-tmc", "arm,primecell";
>> > + reg = <0 0x11004000 0 0x1000>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port@0 {
>> > + cluster1_etf_out: endpoint {
>> > + remote-endpoint =
>> > + <&main_funnel_in_port1>;
>> > + };
>> > + };
>> > +
>> > + port@1 {
>> > + cluster1_etf_in: endpoint {
>> > + slave-mode;
>> > + remote-endpoint =
>> > + <&cluster1_funnel_out_port>;
>> > + };
>> > + };
>> > + };
>>
>> When more than one port is present it is customary to add another level of
>> imbrication like it is done for funnels above:
>> "ports {"
>> port@0 {
>> ...
>> port@1 {
>> ...
>> }
>>
>> The same comment applies to both etf.
>>
>
> OK.
>
>> > +
>> > + main_funnel: funnel@11005000 {
>> > + compatible = "arm,coresight-funnel", "arm,primecell";
>> > + reg = <0 0x11005000 0 0x1000>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + ports {
>> > + #address-cells = <1>;
>> > + #size-cells = <0>;
>> > +
>> > + port@0 {
>> > + reg = <0>;
>> > + main_funnel_out_port: endpoint {
>> > + remote-endpoint =
>> > + <&soc_funnel_in_port>;
>> > + };
>> > + };
>> > +
>> > + port@1 {
>> > + reg = <0>;
>> > + main_funnel_in_port0: endpoint {
>> > + slave-mode;
>> > + remote-endpoint =
>> > + <&cluster0_etf_out>;
>> > + };
>> > + };
>> > +
>> > + port@2 {
>> > + reg = <1>;
>> > + main_funnel_in_port1: endpoint {
>> > + slave-mode;
>> > + remote-endpoint =
>> > + <&cluster1_etf_out>;
>> > + };
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11440000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11440000 0 0x1000>;
>> > + cpu = <&CPU0>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm0_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster0_funnel_in_port0>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11540000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11540000 0 0x1000>;
>> > + cpu = <&CPU1>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm1_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster0_funnel_in_port1>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11640000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11640000 0 0x1000>;
>> > + cpu = <&CPU2>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm2_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster0_funnel_in_port2>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11740000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11740000 0 0x1000>;
>> > + cpu = <&CPU3>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm3_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster0_funnel_in_port3>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11840000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11840000 0 0x1000>;
>> > + cpu = <&CPU4>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm4_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster1_funnel_in_port0>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11940000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11940000 0 0x1000>;
>> > + cpu = <&CPU5>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm5_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster1_funnel_in_port1>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11a40000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11a40000 0 0x1000>;
>> > + cpu = <&CPU6>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm6_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster1_funnel_in_port2>;
>> > + };
>> > + };
>> > + };
>> > +
>> > + etm@11b40000 {
>> > + compatible = "arm,coresight-etm4x", "arm,primecell";
>> > + reg = <0 0x11b40000 0 0x1000>;
>> > + cpu = <&CPU7>;
>> > + clocks = <&ext_26m>;
>> > + clock-names = "apb_pclk";
>> > +
>> > + port {
>> > + etm7_out: endpoint {
>> > + remote-endpoint =
>> > + <&cluster1_funnel_in_port3>;
>> > + };
>> > + };
>> > + };
>> > + };
>> > +};
>> > diff --git a/arch/arm64/boot/dts/sprd/sp9860g-1h10.dts b/arch/arm64/boot/dts/sprd/sp9860g-1h10.dts
>> > new file mode 100644
>> > index 0000000..5faa452
>> > --- /dev/null
>> > +++ b/arch/arm64/boot/dts/sprd/sp9860g-1h10.dts
>> > @@ -0,0 +1,56 @@
>> > +/*
>> > + * Spreadtrum SP9860g board DTS file
>> > + *
>> > + * Copyright (C) 2017, Spreadtrum Communications Inc.
>> > + *
>> > + * This file is licensed under a dual GPLv2 or X11 license.
>> > + */
>> > +
>> > +/dts-v1/;
>> > +
>> > +#include "sc9860.dtsi"
>> > +
>> > +/ {
>> > + model = "Spreadtrum SP9860G 3GFHD Board";
>> > +
>> > + compatible = "sprd,sp9860g-1h10", "sprd,sc9860";
>> > +
>> > + aliases {
>> > + serial0 = &uart0; /* for Bluetooth */
>> > + serial1 = &uart1; /* UART console */
>> > + serial2 = &uart2; /* Reserved */
>> > + serial3 = &uart3; /* for GPS */
>> > + };
>> > +
>> > + memory{
>> > + device_type = "memory";
>> > + reg = <0x0 0x80000000 0 0x60000000>,
>> > + <0x1 0x80000000 0 0x60000000>;
>> > + };
>> > +
>> > + chosen {
>> > + stdout-path = "serial1:115200n8";
>> > + };
>> > +
>> > + reserved-memory {
>> > + #address-cells = <2>;
>> > + #size-cells = <2>;
>> > + ranges;
>> > + };
>> > +};
>> > +
>> > +&uart0 {
>> > + status = "okay";
>> > +};
>> > +
>> > +&uart1 {
>> > + status = "okay";
>> > +};
>> > +
>> > +&uart2 {
>> > + status = "okay";
>> > +};
>> > +
>> > +&uart3 {
>> > + status = "okay";
>> > +};
>> > diff --git a/arch/arm64/boot/dts/sprd/whale2.dtsi b/arch/arm64/boot/dts/sprd/whale2.dtsi
>> > new file mode 100644
>> > index 0000000..64f06d9
>> > --- /dev/null
>> > +++ b/arch/arm64/boot/dts/sprd/whale2.dtsi
>> > @@ -0,0 +1,70 @@
>> > +/*
>> > + * Spreadtrum Whale2 SoC platform peripherals DTS file
>> > + *
>> > + * Copyright (C) 2016, Spreadtrum Communications Inc.
>> > + *
>> > + * This file is licensed under a dual GPLv2 or X11 license.
>> > + */
>> > +
>> > +/ {
>> > + interrupt-parent = <&gic>;
>> > + #address-cells = <2>;
>> > + #size-cells = <2>;
>> > +
>> > + soc: soc {
>> > + compatible = "simple-bus";
>> > + #address-cells = <2>;
>> > + #size-cells = <2>;
>> > + ranges;
>> > +
>> > + ap-apb {
>> > + compatible = "simple-bus";
>> > + #address-cells = <1>;
>> > + #size-cells = <1>;
>> > + ranges = <0 0x0 0x70000000 0x10000000>;
>> > +
>> > + uart0: serial@70000000 {
>> > + compatible = "sprd,sc9838-uart",
>> > + "sprd,sc9836-uart";
>> > + reg = <0x000000 0x100>;
>> > + interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
>> > + clocks = <&ext_26m>;
>> > + status = "disabled";
>> > + };
>> > +
>> > + uart1: serial@70100000 {
>> > + compatible = "sprd,sc9838-uart",
>> > + "sprd,sc9836-uart";
>> > + reg = <0x100000 0x100>;
>> > + interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
>> > + clocks = <&ext_26m>;
>> > + status = "disabled";
>> > + };
>> > +
>> > + uart2: serial@70200000 {
>> > + compatible = "sprd,sc9838-uart",
>> > + "sprd,sc9836-uart";
>> > + reg = <0x200000 0x100>;
>> > + interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
>> > + clocks = <&ext_26m>;
>> > + status = "disabled";
>> > + };
>> > +
>> > + uart3: serial@70300000 {
>> > + compatible = "sprd,sc9838-uart",
>> > + "sprd,sc9836-uart";
>> > + reg = <0x300000 0x100>;
>> > + interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
>> > + clocks = <&ext_26m>;
>> > + status = "disabled";
>> > + };
>> > + };
>> > +
>> > + ext_26m: ext-26m {
>> > + compatible = "fixed-clock";
>> > + #clock-cells = <0>;
>> > + clock-frequency = <26000000>;
>> > + clock-output-names = "ext_26m";
>> > + };
>> > + };
>> > +};
>> > --
>> > 2.7.4
>> >
>> >
>> > _______________________________________________
>> > linux-arm-kernel mailing list
>> > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
>> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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