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Message-ID: <CAL_JsqLYu_z6yNA-MgKgoA=nC5ftzOEH5UNkswA_=xTJiOB0+g@mail.gmail.com>
Date: Fri, 3 Jan 2025 16:14:31 -0600
From: Rob Herring <robh@...nel.org>
To: Vincenzo Frascino <vincenzo.frascino@....com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Linus Walleij <linus.walleij@...aro.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Liviu Dudau <liviu.dudau@....com>,
Sudeep Holla <sudeep.holla@....com>, Lorenzo Pieralisi <lpieralisi@...nel.org>,
Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH v4 2/4] arm64: dts: morello: Add support for common functionalities
On Fri, Jan 3, 2025 at 12:16 PM Vincenzo Frascino
<vincenzo.frascino@....com> wrote:
>
> The Morello architecture is an experimental extension to Armv8.2-A,
> which extends the AArch64 state with the principles proposed in
> version 7 of the Capability Hardware Enhanced RISC Instructions
> (CHERI) ISA.
>
> The Morello Platform (soc) and the Fixed Virtual Platfom (fvp) share
> some functionalities that have conveniently been included in
> morello.dtsi to avoid duplication.
>
> Introduce morello.dtsi.
>
> Note: Morello fvp will be introduced with a future patch series.
>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
> ---
> arch/arm64/boot/dts/arm/morello.dtsi | 467 +++++++++++++++++++++++++++
> 1 file changed, 467 insertions(+)
> create mode 100644 arch/arm64/boot/dts/arm/morello.dtsi
>
> diff --git a/arch/arm64/boot/dts/arm/morello.dtsi b/arch/arm64/boot/dts/arm/morello.dtsi
> new file mode 100644
> index 000000000000..0089b4f2eca7
> --- /dev/null
> +++ b/arch/arm64/boot/dts/arm/morello.dtsi
> @@ -0,0 +1,467 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
> +/*
> + * Copyright (c) 2020-2024, Arm Limited. All rights reserved.
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +/ {
> + interrupt-parent = <&gic>;
> +
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + clocks {
Drop this container node.
> + soc_refclk50mhz: clock-50000000 {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <50000000>;
> + clock-output-names = "apb_pclk";
> + };
> +
> + soc_uartclk: clock-50000000-uart {
There's little point to having 2 fixed clocks with no s/w controls at
the same frequency. Drop.
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <50000000>;
> + clock-output-names = "uartclk";
> + };
> +
> + soc_refclk85mhz: clock-85000000 {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <85000000>;
> + clock-output-names = "iofpga:aclk";
> + };
> +
> + dpu_aclk: clock-350000000 {
> + /* 77.1 MHz derived from 24 MHz reference clock */
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <350000000>;
> + clock-output-names = "aclk";
> + };
> +
> + dpu_pixel_clk: clock-148500000 {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <148500000>;
> + clock-output-names = "pxclk";
> + };
> + };
> +
> + cpus {
> + #address-cells = <2>;
> + #size-cells = <0>;
> +
> + cpu0: cpu@0 {
> + compatible = "arm,neoverse-n1";
I'm pretty sure the N1 doesn't support CHERI/morello. Perhaps
"arm,neoverse-n1-morello" if we want to capture what it is derived
from and since "arm,morello" is taken already.
> + reg = <0x0 0x0>;
> + device_type = "cpu";
> + enable-method = "psci";
> + /* 4 ways set associative */
> + i-cache-size = <0x10000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <512>;
> + d-cache-size = <0x10000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <512>;
> + next-level-cache = <&l2_0>;
> + clocks = <&scmi_dvfs 0>;
> +
> + l2_0: l2-cache-0 {
> + compatible = "cache";
> + cache-level = <2>;
> + /* 8 ways set associative */
> + cache-size = <0x100000>;
> + cache-line-size = <64>;
> + cache-sets = <2048>;
> + cache-unified;
> + next-level-cache = <&l3_0>;
> +
> + l3_0: l3-cache {
> + compatible = "cache";
> + cache-level = <3>;
> + cache-size = <0x100000>;
> + cache-unified;
> + };
> + };
> + };
> +
> + cpu1: cpu@100 {
> + compatible = "arm,neoverse-n1";
> + reg = <0x0 0x100>;
> + device_type = "cpu";
> + enable-method = "psci";
> + /* 4 ways set associative */
> + i-cache-size = <0x10000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <512>;
> + d-cache-size = <0x10000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <512>;
> + next-level-cache = <&l2_1>;
> + clocks = <&scmi_dvfs 0>;
> +
> + l2_1: l2-cache-1 {
> + compatible = "cache";
> + cache-level = <2>;
> + /* 8 ways set associative */
> + cache-size = <0x100000>;
> + cache-line-size = <64>;
> + cache-sets = <2048>;
> + cache-unified;
> + next-level-cache = <&l3_0>;
> + };
> + };
> +
> + cpu2: cpu@...00 {
> + compatible = "arm,neoverse-n1";
> + reg = <0x0 0x10000>;
> + device_type = "cpu";
> + enable-method = "psci";
> + /* 4 ways set associative */
> + i-cache-size = <0x10000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <512>;
> + d-cache-size = <0x10000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <512>;
> + next-level-cache = <&l2_2>;
> + clocks = <&scmi_dvfs 1>;
> +
> + l2_2: l2-cache-2 {
> + compatible = "cache";
> + cache-level = <2>;
> + /* 8 ways set associative */
> + cache-size = <0x100000>;
> + cache-line-size = <64>;
> + cache-sets = <2048>;
> + cache-unified;
> + next-level-cache = <&l3_0>;
> + };
> + };
> +
> + cpu3: cpu@...00 {
> + compatible = "arm,neoverse-n1";
> + reg = <0x0 0x10100>;
> + device_type = "cpu";
> + enable-method = "psci";
> + /* 4 ways set associative */
> + i-cache-size = <0x10000>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <512>;
> + d-cache-size = <0x10000>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <512>;
> + next-level-cache = <&l2_3>;
> + clocks = <&scmi_dvfs 1>;
> +
> + l2_3: l2-cache-3 {
> + compatible = "cache";
> + cache-level = <2>;
> + /* 8 ways set associative */
> + cache-size = <0x100000>;
> + cache-line-size = <64>;
> + cache-sets = <2048>;
> + cache-unified;
> + next-level-cache = <&l3_0>;
> + };
> + };
> + };
> +
> + firmware {
> + interrupt-parent = <&gic>;
> +
> + scmi {
> + compatible = "arm,scmi";
> + mbox-names = "tx", "rx";
> + mboxes = <&mailbox 1 0>, <&mailbox 1 1>;
> + shmem = <&cpu_scp_hpri0>, <&cpu_scp_hpri1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + scmi_dvfs: protocol@13 {
> + reg = <0x13>;
> + #clock-cells = <1>;
> + };
> +
> + scmi_clk: protocol@14 {
> + reg = <0x14>;
> + #clock-cells = <1>;
> + };
> + };
> + };
> +
> + /* The first bank of memory, memory map is actually provided by UEFI. */
> + memory@...00000 {
> + device_type = "memory";
> + /* [0x80000000-0xffffffff] */
> + reg = <0x00000000 0x80000000 0x0 0x7f000000>;
> + };
> +
> + memory@...0000000 {
> + device_type = "memory";
> + /* [0x8080000000-0x83f7ffffff] */
> + reg = <0x00000080 0x80000000 0x3 0x78000000>;
> + };
> +
> + pmu {
> + compatible = "arm,armv8-pmuv3";
Missing the CPU specific compatible.
> + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + psci {
> + compatible = "arm,psci-0.2";
> + method = "smc";
> + };
> +
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + secure-firmware@...00000 {
> + reg = <0x0 0xff000000 0x0 0x01000000>;
> + no-map;
> + };
> + };
> +
> + spe-pmu {
> + compatible = "arm,statistical-profiling-extension-v1";
> + interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + soc: soc {
> + compatible = "simple-bus";
> + #address-cells = <2>;
> + #size-cells = <2>;
> + interrupt-parent = <&gic>;
> + ranges;
> +
> + dp0: display@...00000 {
Sort nodes by address.
> + compatible = "arm,mali-d32", "arm,mali-d71";
> + reg = <0x0 0x2cc00000 0x0 0x20000>;
> + interrupts = <0 69 4>;
> + clocks = <&dpu_aclk>;
> + clock-names = "aclk";
> + iommus = <&smmu_dp 0>, <&smmu_dp 1>, <&smmu_dp 2>, <&smmu_dp 3>,
> + <&smmu_dp 8>;
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pl0: pipeline@0 {
> + reg = <0>;
> + clocks = <&dpu_pixel_clk>;
> + clock-names = "pxclk";
> + port {
> + dp_pl0_out0: endpoint {
> + remote-endpoint = <&tda998x_0_input>;
> + };
> + };
> + };
> + };
> +
> + i2c0: i2c@...f0000 {
> + compatible = "cdns,i2c-r1p14";
> + reg = <0x0 0x1c0f0000 0x0 0x1000>;
> + interrupts = <GIC_SPI 138 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&dpu_aclk>;
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + status = "disabled";
> +
> + hdmi_tx: hdmi-transmitter@70 {
> + compatible = "nxp,tda998x";
> + reg = <0x70>;
> + video-ports = <0x234501>;
> + port {
> + tda998x_0_input: endpoint {
> + remote-endpoint = <&dp_pl0_out0>;
> + };
> + };
> + };
> + };
> +
> + gic: interrupt-controller@...10000 {
> + compatible = "arm,gic-v3";
> + reg = <0x0 0x30000000 0x0 0x10000>, /* GICD */
> + <0x0 0x300c0000 0x0 0x80000>; /* GICR */
> +
> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +
> + #interrupt-cells = <3>;
> + interrupt-controller;
> +
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + its1: msi-controller@...40000 {
> + compatible = "arm,gic-v3-its";
> + reg = <0x0 0x30040000 0x0 0x20000>;
> +
> + msi-controller;
> + #msi-cells = <1>;
> + };
> +
> + its2: msi-controller@...60000 {
> + compatible = "arm,gic-v3-its";
> + reg = <0x0 0x30060000 0x0 0x20000>;
> +
> + msi-controller;
> + #msi-cells = <1>;
> + };
> +
> + its_ccix: msi-controller@...80000 {
> + compatible = "arm,gic-v3-its";
> + reg = <0x0 0x30080000 0x0 0x20000>;
> +
> + msi-controller;
> + #msi-cells = <1>;
> + };
> +
> + its_pcie: msi-controller@...a0000 {
> + compatible = "arm,gic-v3-its";
> + reg = <0x0 0x300a0000 0x0 0x20000>;
> +
> + msi-controller;
> + #msi-cells = <1>;
> + };
> + };
> +
> + smmu_dp: iommu@...00000 {
> + compatible = "arm,smmu-v3";
> + reg = <0x0 0x2ce00000 0x0 0x40000>;
> +
> + interrupts = <GIC_SPI 76 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 80 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 78 IRQ_TYPE_EDGE_RISING>;
> + interrupt-names = "eventq", "gerror", "cmdq-sync";
> + #iommu-cells = <1>;
> + };
> +
> + smmu_ccix: iommu@...00000 {
> + compatible = "arm,smmu-v3";
> + reg = <0x0 0x4f000000 0x0 0x40000>;
> +
> + interrupts = <GIC_SPI 228 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 230 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 41 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 229 IRQ_TYPE_EDGE_RISING>;
> + interrupt-names = "eventq", "gerror", "priq", "cmdq-sync";
> + msi-parent = <&its1 0>;
> + #iommu-cells = <1>;
> + dma-coherent;
> + };
> +
> + smmu_pcie: iommu@...00000 {
> + compatible = "arm,smmu-v3";
> + reg = <0x0 0x4f400000 0x0 0x40000>;
> +
> + interrupts = <GIC_SPI 235 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 237 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 40 IRQ_TYPE_EDGE_RISING>,
> + <GIC_SPI 236 IRQ_TYPE_EDGE_RISING>;
> + interrupt-names = "eventq", "gerror", "priq", "cmdq-sync";
> + msi-parent = <&its2 0>;
> + #iommu-cells = <1>;
> + dma-coherent;
> + };
> +
> + mailbox: mhu@...00000 {
> + compatible = "arm,mhu-doorbell", "arm,primecell";
> + reg = <0x0 0x45000000 0x0 0x1000>;
> +
> + interrupts = <GIC_SPI 318 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 316 IRQ_TYPE_LEVEL_HIGH>;
> + #mbox-cells = <2>;
> + clocks = <&soc_refclk50mhz>;
> + clock-names = "apb_pclk";
> + };
> +
> + pcie_ctlr: pcie@...0000000 {
> + device_type = "pci";
> + compatible = "pci-host-ecam-generic";
> + reg = <0x28 0xC0000000 0 0x10000000>;
> + ranges = <0x01000000 0x00 0x00000000 0x00 0x6f000000 0x00 0x00800000>,
> + <0x02000000 0x00 0x60000000 0x00 0x60000000 0x00 0x0f000000>,
> + <0x42000000 0x09 0x00000000 0x09 0x00000000 0x1f 0xc0000000>;
> + bus-range = <0 255>;
Not needed unless less than this range.
> + linux,pci-domain = <0>;
> + #address-cells = <3>;
> + #size-cells = <2>;
> + dma-coherent;
> + #interrupt-cells = <1>;
> + interrupt-map-mask = <0 0 0 7>;
> + interrupt-map = <0 0 0 1 &gic 0 0 0 169 IRQ_TYPE_LEVEL_HIGH>,
> + <0 0 0 2 &gic 0 0 0 170 IRQ_TYPE_LEVEL_HIGH>,
> + <0 0 0 3 &gic 0 0 0 171 IRQ_TYPE_LEVEL_HIGH>,
> + <0 0 0 4 &gic 0 0 0 172 IRQ_TYPE_LEVEL_HIGH>;
> + msi-map = <0 &its_pcie 0 0x10000>;
> + iommu-map = <0 &smmu_pcie 0 0x10000>;
> + };
> +
> + ccix_pcie_ctlr: pcie@...0000000 {
> + device_type = "pci";
> + compatible = "pci-host-ecam-generic";
> + reg = <0x4f 0xC0000000 0 0x10000000>;
> + ranges = <0x01000000 0x00 0x00000000 0x00 0x7f000000 0x00 0x00800000>,
> + <0x02000000 0x00 0x70000000 0x00 0x70000000 0x00 0x0f000000>,
> + <0x42000000 0x30 0x00000000 0x30 0x00000000 0x1f 0xc0000000>;
> + bus-range = <0 255>;
> + linux,pci-domain = <1>;
> + #address-cells = <3>;
> + #size-cells = <2>;
> + dma-coherent;
> + #interrupt-cells = <1>;
> + interrupt-map-mask = <0 0 0 7>;
> + interrupt-map = <0 0 0 1 &gic 0 0 0 201 IRQ_TYPE_LEVEL_HIGH>,
> + <0 0 0 2 &gic 0 0 0 202 IRQ_TYPE_LEVEL_HIGH>,
> + <0 0 0 3 &gic 0 0 0 203 IRQ_TYPE_LEVEL_HIGH>,
> + <0 0 0 4 &gic 0 0 0 204 IRQ_TYPE_LEVEL_HIGH>;
> + msi-map = <0 &its_ccix 0 0x10000>;
> + iommu-map = <0 &smmu_ccix 0 0x10000>;
> + };
> +
> + uart0: serial@...00000 {
> + compatible = "arm,pl011", "arm,primecell";
> + reg = <0x0 0x2a400000 0x0 0x1000>;
> + interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&soc_uartclk>, <&soc_refclk50mhz>;
> + clock-names = "uartclk", "apb_pclk";
> +
> + status = "disabled";
> + };
> +
> + sram: sram@...00000 {
> + compatible = "mmio-sram";
> + reg = <0x0 0x06000000 0x0 0x8000>;
> + ranges = <0 0x0 0x06000000 0x8000>;
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + cpu_scp_hpri0: scp-sram@0 {
> + compatible = "arm,scmi-shmem";
> + reg = <0x0 0x80>;
> + };
> +
> + cpu_scp_hpri1: scp-sram@80 {
> + compatible = "arm,scmi-shmem";
> + reg = <0x80 0x80>;
> + };
> + };
> +
> + };
> +
> + timer {
> + compatible = "arm,armv8-timer";
> + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
> + <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
> + };
> +};
> --
> 2.43.0
>
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