Re: [PATCH v14 6/8] arm64: dts: Add AMD Pensando Elba SoC support

[Michal Simek <michal.simek@amd.com>]

On 5/15/23 20:16, Brad Larson wrote:
> Add AMD Pensando common and Elba SoC specific device nodes
> 
> Signed-off-by: Brad Larson <blarson@amd.com>
> ---
> 
> v14 changes:
> - Fix dtbs_check l2-cache* property issue by adding required
>    cache-level and cache-unified properties
> - Observed the issue after updating dtschema from 2023.1 to 2023.4
>    and yamllint from 1.26.3 to 1.30.0
> 
> v11 changes:
> - Delete reset-names
> - Fix spi0 compatible to be specific 'amd,pensando-elba-ctrl'
> 
> v9 changes:
> - Single node for spi0 system-controller and squash
>    the reset-controller child into parent
> 
> ---
>   arch/arm64/boot/dts/amd/Makefile              |   1 +
>   arch/arm64/boot/dts/amd/elba-16core.dtsi      | 197 ++++++++++++++++++
>   arch/arm64/boot/dts/amd/elba-asic-common.dtsi |  80 +++++++
>   arch/arm64/boot/dts/amd/elba-asic.dts         |  28 +++
>   arch/arm64/boot/dts/amd/elba-flash-parts.dtsi | 106 ++++++++++
>   arch/arm64/boot/dts/amd/elba.dtsi             | 191 +++++++++++++++++
>   6 files changed, 603 insertions(+)
>   create mode 100644 arch/arm64/boot/dts/amd/elba-16core.dtsi
>   create mode 100644 arch/arm64/boot/dts/amd/elba-asic-common.dtsi
>   create mode 100644 arch/arm64/boot/dts/amd/elba-asic.dts
>   create mode 100644 arch/arm64/boot/dts/amd/elba-flash-parts.dtsi
>   create mode 100644 arch/arm64/boot/dts/amd/elba.dtsi
> 
> diff --git a/arch/arm64/boot/dts/amd/Makefile b/arch/arm64/boot/dts/amd/Makefile
> index 68103a8b0ef5..8502cc2afbc5 100644
> --- a/arch/arm64/boot/dts/amd/Makefile
> +++ b/arch/arm64/boot/dts/amd/Makefile
> @@ -1,2 +1,3 @@
>   # SPDX-License-Identifier: GPL-2.0
> +dtb-$(CONFIG_ARCH_PENSANDO) += elba-asic.dtb
>   dtb-$(CONFIG_ARCH_SEATTLE) += amd-overdrive-rev-b0.dtb amd-overdrive-rev-b1.dtb
> diff --git a/arch/arm64/boot/dts/amd/elba-16core.dtsi b/arch/arm64/boot/dts/amd/elba-16core.dtsi
> new file mode 100644
> index 000000000000..f9f9f5fd5f69
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amd/elba-16core.dtsi
> @@ -0,0 +1,197 @@
> +// SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> +/*
> + * Copyright 2020-2022 Advanced Micro Devices, Inc.

2023 and the same below.

> + */
> +
> +/ {
> +	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>; };
> +			};
> +
> +			cluster2 {
> +				core0 { cpu = <&cpu8>; };
> +				core1 { cpu = <&cpu9>; };
> +				core2 { cpu = <&cpu10>; };
> +				core3 { cpu = <&cpu11>; };
> +			};
> +
> +			cluster3 {
> +				core0 { cpu = <&cpu12>; };
> +				core1 { cpu = <&cpu13>; };
> +				core2 { cpu = <&cpu14>; };
> +				core3 { cpu = <&cpu15>; };
> +			};
> +		};
> +
> +		/* CLUSTER 0 */
> +		cpu0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x0>;

Do you really need 2/0 split here. The first cell is 0 anyway.


> +			next-level-cache = <&l2_0>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu1: cpu@1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x1>;
> +			next-level-cache = <&l2_0>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu2: cpu@2 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x2>;
> +			next-level-cache = <&l2_0>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu3: cpu@3 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x3>;
> +			next-level-cache = <&l2_0>;
> +			enable-method = "psci";
> +		};
> +
> +		l2_0: l2-cache0 {
> +			compatible = "cache";
> +			cache-unified;
> +			cache-level = <2>;
> +		};
> +
> +		/* CLUSTER 1 */
> +		cpu4: cpu@100 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x100>;
> +			next-level-cache = <&l2_1>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu5: cpu@101 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x101>;
> +			next-level-cache = <&l2_1>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu6: cpu@102 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x102>;
> +			next-level-cache = <&l2_1>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu7: cpu@103 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x103>;
> +			next-level-cache = <&l2_1>;
> +			enable-method = "psci";
> +		};
> +
> +		l2_1: l2-cache1 {
> +			compatible = "cache";
> +			cache-unified;
> +			cache-level = <2>;
> +		};
> +
> +		/* CLUSTER 2 */
> +		cpu8: cpu@200 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x200>;
> +			next-level-cache = <&l2_2>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu9: cpu@201 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x201>;
> +			next-level-cache = <&l2_2>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu10: cpu@202 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x202>;
> +			next-level-cache = <&l2_2>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu11: cpu@203 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x203>;
> +			next-level-cache = <&l2_2>;
> +			enable-method = "psci";
> +		};
> +
> +		l2_2: l2-cache2 {
> +			compatible = "cache";
> +			cache-unified;
> +			cache-level = <2>;
> +		};
> +
> +		/* CLUSTER 3 */
> +		cpu12: cpu@300 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x300>;
> +			next-level-cache = <&l2_3>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu13: cpu@301 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x301>;
> +			next-level-cache = <&l2_3>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu14: cpu@302 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x302>;
> +			next-level-cache = <&l2_3>;
> +			enable-method = "psci";
> +		};
> +
> +		cpu15: cpu@303 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72";
> +			reg = <0 0x303>;
> +			next-level-cache = <&l2_3>;
> +			enable-method = "psci";
> +		};
> +
> +		l2_3: l2-cache3 {
> +			compatible = "cache";
> +			cache-unified;
> +			cache-level = <2>;
> +		};
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/amd/elba-asic-common.dtsi b/arch/arm64/boot/dts/amd/elba-asic-common.dtsi
> new file mode 100644
> index 000000000000..1a615788f54e
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amd/elba-asic-common.dtsi
> @@ -0,0 +1,80 @@
> +// SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> +/*
> + * Copyright 2020-2022 Advanced Micro Devices, Inc.
> + */
> +
> +&ahb_clk {
> +	clock-frequency = <400000000>;
> +};
> +
> +&emmc_clk {
> +	clock-frequency = <200000000>;
> +};
> +
> +&flash_clk {
> +	clock-frequency = <400000000>;
> +};
> +
> +&ref_clk {
> +	clock-frequency = <156250000>;
> +};
> +
> +&qspi {
> +	status = "okay";
> +
> +	flash0: flash@0 {
> +		compatible = "jedec,spi-nor";
> +		reg = <0>;
> +		spi-max-frequency = <40000000>;
> +		spi-rx-bus-width = <2>;
> +		m25p,fast-read;
> +		cdns,read-delay = <0>;
> +		cdns,tshsl-ns = <0>;
> +		cdns,tsd2d-ns = <0>;
> +		cdns,tchsh-ns = <0>;
> +		cdns,tslch-ns = <0>;
> +	};
> +};
> +
> +&gpio0 {
> +	status = "okay";
> +};
> +
> +&emmc {
> +	bus-width = <8>;
> +	cap-mmc-hw-reset;
> +	resets = <&rstc 0>;
> +	status = "okay";
> +};
> +
> +&wdt0 {
> +	status = "okay";
> +};
> +
> +&i2c0 {
> +	clock-frequency = <100000>;
> +	status = "okay";
> +
> +	rtc@51 {
> +		compatible = "nxp,pcf85263";
> +		reg = <0x51>;
> +	};
> +};
> +
> +&spi0 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	num-cs = <4>;
> +	cs-gpios = <0>, <0>, <&porta 1 GPIO_ACTIVE_LOW>,
> +		   <&porta 7 GPIO_ACTIVE_LOW>;
> +	status = "okay";
> +
> +	rstc: system-controller@0 {
> +		compatible = "amd,pensando-elba-ctrl";
> +		reg = <0>;
> +		spi-max-frequency = <12000000>;
> +		interrupt-parent = <&porta>;
> +		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> +		#reset-cells = <1>;
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/amd/elba-asic.dts b/arch/arm64/boot/dts/amd/elba-asic.dts
> new file mode 100644
> index 000000000000..c3f4da2f7449
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amd/elba-asic.dts
> @@ -0,0 +1,28 @@
> +// SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> +/*
> + * Device Tree file for AMD Pensando Elba Board.
> + *
> + * Copyright 2020-2022 Advanced Micro Devices, Inc.
> + */
> +
> +/dts-v1/;
> +
> +#include "elba.dtsi"
> +#include "elba-16core.dtsi"
> +#include "elba-asic-common.dtsi"
> +#include "elba-flash-parts.dtsi"
> +
> +/ {
> +	model = "AMD Pensando Elba Board";
> +	compatible = "amd,pensando-elba-ortano", "amd,pensando-elba";
> +
> +	aliases {
> +		serial0 = &uart0;
> +		spi0 = &spi0;
> +		spi1 = &qspi;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/amd/elba-flash-parts.dtsi b/arch/arm64/boot/dts/amd/elba-flash-parts.dtsi
> new file mode 100644
> index 000000000000..734893fef2c3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amd/elba-flash-parts.dtsi
> @@ -0,0 +1,106 @@
> +// SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> +/*
> + * Copyright 2020-2022 Advanced Micro Devices, Inc.
> + */
> +
> +&flash0 {
> +	partitions {
> +		compatible = "fixed-partitions";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		partition@0 {
> +			label = "flash";
> +			reg = <0x10000 0xfff0000>;

This doesn't fit with partition@0 above.
Also size is weird.


> +		};
> +
> +		partition@f0000 {
> +			label = "golduenv";
> +			reg = <0xf0000 0x10000>;
> +		};
> +
> +		partition@100000 {
> +			label = "boot0";
> +			reg = <0x100000 0x80000>;
> +		};
> +
> +		partition@180000 {
> +			label = "golduboot";
> +			reg = <0x180000 0x200000>;
> +		};
> +
> +		partition@380000 {
> +			label = "brdcfg0";
> +			reg = <0x380000 0x10000>;
> +		};
> +
> +		partition@390000 {
> +			label = "brdcfg1";
> +			reg = <0x390000 0x10000>;
> +		};
> +
> +		partition@400000 {
> +			label = "goldfw";
> +			reg = <0x400000 0x3c00000>;

This size looks weird.

> +		};
> +
> +		partition@4010000 {
> +			label = "fwmap";
> +			reg = <0x4010000 0x20000>;
> +		};
> +
> +		partition@4030000 {
> +			label = "fwsel";
> +			reg = <0x4030000 0x20000>;
> +		};
> +
> +		partition@4090000 {
> +			label = "bootlog";
> +			reg = <0x4090000 0x20000>;
> +		};
> +
> +		partition@40b0000 {
> +			label = "panicbuf";
> +			reg = <0x40b0000 0x20000>;
> +		};
> +
> +		partition@40d0000 {
> +			label = "uservars";
> +			reg = <0x40d0000 0x20000>;
> +		};
> +
> +		partition@4200000 {
> +			label = "uboota";
> +			reg = <0x4200000 0x400000>;
> +		};
> +
> +		partition@4600000 {
> +			label = "ubootb";
> +			reg = <0x4600000 0x400000>;
> +		};
> +
> +		partition@4a00000 {
> +			label = "mainfwa";
> +			reg = <0x4a00000 0x1000000>;
> +		};
> +
> +		partition@5a00000 {
> +			label = "mainfwb";
> +			reg = <0x5a00000 0x1000000>;
> +		};
> +
> +		partition@6a00000 {
> +			label = "diaguboot";
> +			reg = <0x6a00000 0x400000>;
> +		};
> +

here is gap

> +		partition@8000000 {
> +			label = "diagfw";
> +			reg = <0x8000000 0x7fe0000>;
> +		};
> +
> +		partition@ffe0000 {
> +			label = "ubootenv";
> +			reg = <0xffe0000 0x10000>;
> +		};

And this is missing space description.

Thanks,
Michal