Re: [PATCH v2 5/5] arm64: dts: Add Unisoc's SC9863A SoC support

From: Rob Herring
Date: Thu Nov 14 2019 - 16:05:23 EST

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In reply to: Chunyan Zhang: "[PATCH v2 5/5] arm64: dts: Add Unisoc's SC9863A SoC support"
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On Mon, Nov 11, 2019 at 05:02:30PM +0800, Chunyan Zhang wrote:
>
> Add basic DT to support Unisoc's SC9863A, with this patch,
> the board sp9863a-1h10 can run into console.
>
> Signed-off-by: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx>
> ---
> arch/arm64/boot/dts/sprd/Makefile | 3 +-
> arch/arm64/boot/dts/sprd/sc9863a.dtsi | 536 ++++++++++++++++++++++
> arch/arm64/boot/dts/sprd/sharkl3.dtsi | 188 ++++++++
> arch/arm64/boot/dts/sprd/sp9863a-1h10.dts | 40 ++
> 4 files changed, 766 insertions(+), 1 deletion(-)
> create mode 100644 arch/arm64/boot/dts/sprd/sc9863a.dtsi
> create mode 100644 arch/arm64/boot/dts/sprd/sharkl3.dtsi
> create mode 100644 arch/arm64/boot/dts/sprd/sp9863a-1h10.dts
>
> diff --git a/arch/arm64/boot/dts/sprd/Makefile b/arch/arm64/boot/dts/sprd/Makefile
> index 2bdc23804f40..f4f1f5148cc2 100644
> --- a/arch/arm64/boot/dts/sprd/Makefile
> +++ b/arch/arm64/boot/dts/sprd/Makefile
> @@ -1,3 +1,4 @@
> # SPDX-License-Identifier: GPL-2.0
> dtb-$(CONFIG_ARCH_SPRD) += sc9836-openphone.dtb \
> - sp9860g-1h10.dtb
> + sp9860g-1h10.dtb \
> + sp9863a-1h10.dtb
> diff --git a/arch/arm64/boot/dts/sprd/sc9863a.dtsi b/arch/arm64/boot/dts/sprd/sc9863a.dtsi
> new file mode 100644
> index 000000000000..578d71a932d9
> --- /dev/null
> +++ b/arch/arm64/boot/dts/sprd/sc9863a.dtsi
> @@ -0,0 +1,536 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Unisoc SC9863A SoC DTS file
> + *
> + * Copyright (C) 2019, Unisoc Inc.
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include "sharkl3.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@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x0>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> +
> + CPU1: cpu@100 {

Your numbering seems odd. This follows the MPIDR reg? Normally a cluster
would share the same number in one of the bytes.

> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x100>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> +
> + CPU2: cpu@200 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x200>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> +
> + CPU3: cpu@300 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x300>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> +
> + CPU4: cpu@400 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x400>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> +
> + CPU5: cpu@500 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x500>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> +
> + CPU6: cpu@600 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x600>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> +
> + CPU7: cpu@700 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x0 0x700>;
> + enable-method = "psci";
> + cpu-idle-states = <&CORE_PD>;
> + };
> + };
> +
> + idle-states {
> + entry-method = "arm,psci";
> + CORE_PD: core_pd {
> + compatible = "arm,idle-state";
> + entry-latency-us = <4000>;
> + exit-latency-us = <4000>;
> + min-residency-us = <10000>;
> + local-timer-stop;
> + arm,psci-suspend-param = <0x00010000>;
> + };
> + };
> +
> + gic: interrupt-controller@14000000 {

Should go under a bus node.

> + compatible = "arm,gic-v3";
> + #interrupt-cells = <3>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> + redistributor-stride = <0x0 0x20000>; /* 128KB stride */
> + #redistributor-regions = <1>;
> + interrupt-controller;
> + reg = <0x0 0x14000000 0 0x20000>, /* GICD */
> + <0x0 0x14040000 0 0x100000>; /* GICR */
> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +
> + v2m_0: v2m@0 {
> + compatible = "arm,gic-v2m-frame";

This is a GICv2 thing...

> + msi-controller;

Goes in the parent. Please run your dts file with
'make W=12 dtbs_check' and fix the warnings.

> + reg = <0 0 0 0x1000>;
> + };
> + };
> +
> + psci {
> + compatible = "arm,psci-0.2";
> + method = "smc";
> + };
> +
> + timer {
> + compatible = "arm,armv8-timer";
> + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>, /* Physical Secure PPI */
> + <GIC_PPI 14 IRQ_TYPE_LEVEL_HIGH>, /* Physical Non-Secure PPI */
> + <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>, /* Virtual PPI */
> + <GIC_PPI 10 IRQ_TYPE_LEVEL_HIGH>; /* Hipervisor PPI */
> + };
> +
> + pmu {
> + compatible = "arm,armv8-pmuv3";
> + interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 150 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 151 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + soc {
> + funnel@10001000 {
> + compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
> + reg = <0 0x10001000 0 0x1000>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + funnel_soc_out_port: endpoint {
> + remote-endpoint = <&etb_in>;
> + };
> + };
> + };
> +
> + in-ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + funnel_soc_in_port: endpoint {
> + remote-endpoint =
> + <&funnel_ca55_out_port>;
> + };
> + };
> + };
> + };
> +
> + etb@10003000 {
> + compatible = "arm,coresight-tmc", "arm,primecell";
> + reg = <0 0x10003000 0 0x1000>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + in-ports {
> + port {
> + etb_in: endpoint {
> + remote-endpoint =
> + <&funnel_soc_out_port>;
> + };
> + };
> + };
> + };
> +
> + funnel@12001000 {
> + compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
> + reg = <0 0x12001000 0 0x1000>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + funnel_little_out_port: endpoint {
> + remote-endpoint =
> + <&etf_little_in>;
> + };
> + };
> + };
> +
> + in-ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + funnel_little_in_port0: endpoint {
> + remote-endpoint = <&etm0_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + funnel_little_in_port1: endpoint {
> + remote-endpoint = <&etm1_out>;
> + };
> + };
> +
> + port@2 {
> + reg = <2>;
> + funnel_little_in_port2: endpoint {
> + remote-endpoint = <&etm2_out>;
> + };
> + };
> +
> + port@3 {
> + reg = <3>;
> + funnel_little_in_port3: endpoint {
> + remote-endpoint = <&etm3_out>;
> + };
> + };
> + };
> + };
> +
> + etf@12002000 {
> + compatible = "arm,coresight-tmc", "arm,primecell";
> + reg = <0 0x12002000 0 0x1000>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etf_little_out: endpoint {
> + remote-endpoint =
> + <&funnel_ca55_in_port0>;
> + };
> + };
> + };
> +
> + in-port {
> + port {
> + etf_little_in: endpoint {
> + remote-endpoint =
> + <&funnel_little_out_port>;
> + };
> + };
> + };
> + };
> +
> + etf@12003000 {
> + compatible = "arm,coresight-tmc", "arm,primecell";
> + reg = <0 0x12003000 0 0x1000>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etf_big_out: endpoint {
> + remote-endpoint =
> + <&funnel_ca55_in_port1>;
> + };
> + };
> + };
> +
> + in-ports {
> + port {
> + etf_big_in: endpoint {
> + remote-endpoint =
> + <&funnel_big_out_port>;
> + };
> + };
> + };
> + };
> +
> + funnel@12004000 {
> + compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
> + reg = <0 0x12004000 0 0x1000>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + funnel_ca55_out_port: endpoint {
> + remote-endpoint =
> + <&funnel_soc_in_port>;
> + };
> + };
> + };
> +
> + in-ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + funnel_ca55_in_port0: endpoint {
> + remote-endpoint =
> + <&etf_little_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + funnel_ca55_in_port1: endpoint {
> + remote-endpoint =
> + <&etf_big_out>;
> + };
> + };
> + };
> + };
> +
> + funnel@12005000 {
> + compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
> + reg = <0 0x12005000 0 0x1000>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + funnel_big_out_port: endpoint {
> + remote-endpoint =
> + <&etf_big_in>;
> + };
> + };
> + };
> +
> + in-ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + funnel_big_in_port0: endpoint {
> + remote-endpoint = <&etm4_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + funnel_big_in_port1: endpoint {
> + remote-endpoint = <&etm5_out>;
> + };
> + };
> +
> + port@2 {
> + reg = <2>;
> + funnel_big_in_port2: endpoint {
> + remote-endpoint = <&etm6_out>;
> + };
> + };
> +
> + port@3 {
> + reg = <3>;
> + funnel_big_in_port3: endpoint {
> + remote-endpoint = <&etm7_out>;
> + };
> + };
> + };
> + };
> +
> + etm@13040000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13040000 0 0x1000>;
> + cpu = <&CPU0>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm0_out: endpoint {
> + remote-endpoint =
> + <&funnel_little_in_port0>;
> + };
> + };
> + };
> + };
> +
> + etm@13140000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13140000 0 0x1000>;
> + cpu = <&CPU1>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm1_out: endpoint {
> + remote-endpoint =
> + <&funnel_little_in_port1>;
> + };
> + };
> + };
> + };
> +
> + etm@13240000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13240000 0 0x1000>;
> + cpu = <&CPU2>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm2_out: endpoint {
> + remote-endpoint =
> + <&funnel_little_in_port2>;
> + };
> + };
> + };
> + };
> +
> + etm@13340000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13340000 0 0x1000>;
> + cpu = <&CPU3>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm3_out: endpoint {
> + remote-endpoint =
> + <&funnel_little_in_port3>;
> + };
> + };
> + };
> + };
> +
> + etm@13440000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13440000 0 0x1000>;
> + cpu = <&CPU4>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm4_out: endpoint {
> + remote-endpoint =
> + <&funnel_big_in_port0>;
> + };
> + };
> + };
> + };
> +
> + etm@13540000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13540000 0 0x1000>;
> + cpu = <&CPU5>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm5_out: endpoint {
> + remote-endpoint =
> + <&funnel_big_in_port1>;
> + };
> + };
> + };
> + };
> +
> + etm@13640000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13640000 0 0x1000>;
> + cpu = <&CPU6>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm6_out: endpoint {
> + remote-endpoint =
> + <&funnel_big_in_port2>;
> + };
> + };
> + };
> + };
> +
> + etm@13740000 {
> + compatible = "arm,coresight-etm4x", "arm,primecell";
> + reg = <0 0x13740000 0 0x1000>;
> + cpu = <&CPU7>;
> + clocks = <&ext_26m>;
> + clock-names = "apb_pclk";
> +
> + out-ports {
> + port {
> + etm7_out: endpoint {
> + remote-endpoint =
> + <&funnel_big_in_port3>;
> + };
> + };
> + };
> + };
> + };
> +};
> diff --git a/arch/arm64/boot/dts/sprd/sharkl3.dtsi b/arch/arm64/boot/dts/sprd/sharkl3.dtsi
> new file mode 100644
> index 000000000000..3ef233f70dc4
> --- /dev/null
> +++ b/arch/arm64/boot/dts/sprd/sharkl3.dtsi
> @@ -0,0 +1,188 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Unisoc Sharkl3 platform DTS file
> + *
> + * Copyright (C) 2019, Unisoc Inc.
> + */
> +
> +/ {
> + interrupt-parent = <&gic>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + soc: soc {
> + compatible = "simple-bus";
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + ap_ahb_regs: syscon@20e00000 {
> + compatible = "syscon";
> + reg = <0 0x20e00000 0 0x10000>;
> + };
> +
> + pub_apb_regs: syscon@300e0000 {
> + compatible = "syscon";

"syscon" should also have a specific compatible. What are all these
blocks? Looks like placeholders. If so, just drop them.

> + reg = <0 0x300e0000 0 0x10000>;
> + };
> +
> + pub_ahb_regs: syscon@300f0000 {
> + compatible = "syscon";
> + reg = <0 0x300f0000 0 0x10000>;
> + };
> +
> + aon_intc_regs: syscon@40200000 {
> + compatible = "syscon";
> + reg = <0 0x40200000 0 0x10000>;
> + };
> +
> + pmu_regs: syscon@402b0000 {
> + compatible = "syscon";
> + reg = <0 0x402b0000 0 0x10000>;
> + };
> +
> + aon_apb_regs: syscon@402e0000 {
> + compatible = "syscon";
> + reg = <0 0x402e0000 0 0x10000>;
> + };
> +
> + anlg_phy_g1_regs: syscon@40350000 {
> + compatible = "syscon";
> + reg = <0 0x40350000 0 0x3000>;
> + };
> +
> + anlg_phy_g2_regs: syscon@40353000 {
> + compatible = "syscon";
> + reg = <0 0x40353000 0 0x6000>;
> + };
> +
> + anlg_phy_g4_regs: syscon@40359000 {
> + compatible = "syscon";
> + reg = <0 0x40359000 0 0x3000>;
> + };
> +
> + anlg_phy_g5_regs: syscon@4035c000 {
> + compatible = "syscon";
> + reg = <0 0x4035c000 0 0x3000>;
> + };
> +
> + anlg_phy_g7_regs: syscon@40363000 {
> + compatible = "syscon";
> + reg = <0 0x40363000 0 0x3000>;
> + };
> +
> + anlg_wrap_wcn_regs: syscon@40366000 {
> + compatible = "syscon";
> + reg = <0 0x40366000 0 0x3000>;
> + };
> +
> + wcn_regs: syscon@403a0000 {
> + compatible = "syscon";
> + reg = <0 0x403a0000 0 0x10000>;
> + };
> +
> + ap_intc0_regs: syscon@40500000 {
> + compatible = "syscon";
> + reg = <0 0x40500000 0 0x10000>;
> + };
> +
> + ap_intc1_regs: syscon@40510000 {
> + compatible = "syscon";
> + reg = <0 0x40510000 0 0x10000>;
> + };
> +
> + ap_intc2_regs: syscon@40520000 {
> + compatible = "syscon";
> + reg = <0 0x40520000 0 0x10000>;
> + };
> +
> + ap_intc3_regs: syscon@40530000 {
> + compatible = "syscon";
> + reg = <0 0x40530000 0 0x10000>;
> + };
> +
> + ap_intc4_regs: syscon@40540000 {
> + compatible = "syscon";
> + reg = <0 0x40540000 0 0x10000>;
> + };
> +
> + ap_intc5_regs: syscon@40550000 {
> + compatible = "syscon";
> + reg = <0 0x40550000 0 0x10000>;
> + };
> +
> + mm_ahb_regs: syscon@60800000 {
> + compatible = "syscon";
> + reg = <0 0x60800000 0 0x10000>;
> + };
> +
> + mm_vsp_ahb_regs: syscon@62000000 {
> + compatible = "syscon";
> + reg = <0 0x62000000 0 0x10000>;
> + };
> +
> + ap_apb_regs: syscon@71300000 {
> + compatible = "syscon";
> + reg = <0 0x71300000 0 0x40000>;
> + };
> +
> + ap-apb {

apb@70000000

> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0 0x0 0x70000000 0x10000000>;
> +
> + uart0: serial@0 {
> + compatible = "sprd,sc9863a-uart",
> + "sprd,sc9836-uart";
> + reg = <0x0 0x100>;
> + interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ext_26m>;
> + status = "disabled";
> + };
> +
> + uart1: serial@100000 {
> + compatible = "sprd,sc9863a-uart",
> + "sprd,sc9836-uart";
> + reg = <0x100000 0x100>;
> + interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ext_26m>;
> + status = "disabled";
> + };
> +
> + uart2: serial@200000 {
> + compatible = "sprd,sc9863a-uart",
> + "sprd,sc9836-uart";
> + reg = <0x200000 0x100>;
> + interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ext_26m>;
> + status = "disabled";
> + };
> +
> + uart3: serial@300000 {
> + compatible = "sprd,sc9863a-uart",
> + "sprd,sc9836-uart";
> + reg = <0x300000 0x100>;
> + interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ext_26m>;
> + status = "disabled";
> + };
> +
> + uart4: serial@400000 {
> + compatible = "sprd,sc9863a-uart",
> + "sprd,sc9836-uart";
> + reg = <0x400000 0x100>;
> + interrupts = <GIC_SPI 6 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";
> + };
> +};
> diff --git a/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts b/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts
> new file mode 100644
> index 000000000000..b6fbb5ca37e1
> --- /dev/null
> +++ b/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts
> @@ -0,0 +1,40 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Unisoc SP9863A-1h10 boards DTS file
> + *
> + * Copyright (C) 2019, Unisoc Inc.
> + */
> +
> +/dts-v1/;
> +
> +#include "sc9863a.dtsi"
> +
> +/ {
> + model = "Spreadtrum SP9863A-1H10 Board";
> +
> + compatible = "sprd,sp9863a-1h10", "sprd,sc9863a";
> +
> + sprd,sc-id = <9863 1 0x20000>;

Not documented.

> +
> + aliases {
> + serial0 = &uart0;
> + serial1 = &uart1;
> + };
> +
> + memory {

memory@80000000

> + device_type = "memory";
> + reg = <0x0 0x80000000 0x0 0x80000000>;
> + };
> +
> + chosen {
> + stdout-path = "serial1:115200n8";
> + };
> +};
> +
> +&uart0 {
> + status = "okay";
> +};
> +
> +&uart1 {
> + status = "okay";
> +};
> --
> 2.20.1
>
>

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