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

[Rob Herring <robh@kernel.org>]

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@unisoc.com>
> ---
>  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
> 
>