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Message-ID: <20170222034632.GA18116@spreadtrum.com>
Date: Wed, 22 Feb 2017 11:46:33 +0800
From: Chunyan Zhang <chunyan.zhang@...eadtrum.com>
To: Mathieu Poirier <mathieu.poirier@...aro.org>
CC: <robh+dt@...nel.org>, <mark.rutland@....com>,
<gregkh@...uxfoundation.org>, <catalin.marinas@....com>,
<will.deacon@....com>, <arnd@...db.de>,
<devicetree@...r.kernel.org>, <orson.zhai@...eadtrum.com>,
<zhang.lyra@...il.com>, <linux-kernel@...r.kernel.org>,
<sudeep.holla@....com>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V2 1/3] arm64: dts: Add basic DT to support Spreadtrum's
SP9860G
Hello Mathieu,
On 二, 2月 21, 2017 at 09:27:44上午 -0700, Mathieu Poirier wrote:
> On Tue, Feb 21, 2017 at 02:55:02PM +0800, Chunyan Zhang wrote:
> > From: Orson Zhai <orson.zhai@...eadtrum.com>
>
> 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@...eadtrum.com>
> > Signed-off-by: Chunyan Zhang <chunyan.zhang@...eadtrum.com>
> > ---
> > 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@...000 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53", "arm,armv8";
> > + reg = <0x0 0x530000>;
> > + enable-method = "psci";
> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
> > + };
> > +
> > + CPU1: cpu@...001 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53", "arm,armv8";
> > + reg = <0x0 0x530001>;
> > + enable-method = "psci";
> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
> > + };
> > +
> > + CPU2: cpu@...002 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53", "arm,armv8";
> > + reg = <0x0 0x530002>;
> > + enable-method = "psci";
> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
> > + };
> > +
> > + CPU3: cpu@...003 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53", "arm,armv8";
> > + reg = <0x0 0x530003>;
> > + enable-method = "psci";
> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
> > + };
> > +
> > + CPU4: cpu@...100 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53", "arm,armv8";
> > + reg = <0x0 0x530100>;
> > + enable-method = "psci";
> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
> > + };
> > +
> > + CPU5: cpu@...101 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53", "arm,armv8";
> > + reg = <0x0 0x530101>;
> > + enable-method = "psci";
> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
> > + };
> > +
> > + CPU6: cpu@...102 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53", "arm,armv8";
> > + reg = <0x0 0x530102>;
> > + enable-method = "psci";
> > + cpu-idle-states = <&CORE_PD &CLUSTER_PD>;
> > + };
> > +
> > + CPU7: cpu@...103 {
> > + 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@...01000 {
> > + 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@...01000 {
>
> 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?
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@...03000 {
> > + 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@...01000 {
> > + 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@...02000 {
> > + 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@...03000 {
> > + 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@...04000 {
> > + 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@...05000 {
> > + 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@...40000 {
> > + 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@...40000 {
> > + 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@...40000 {
> > + 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@...40000 {
> > + 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@...40000 {
> > + 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@...40000 {
> > + 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@...40000 {
> > + 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@...40000 {
> > + 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@...00000 {
> > + 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@...00000 {
> > + 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@...00000 {
> > + 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@...00000 {
> > + 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@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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