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Message-ID: <7abf1685-0dee-4ef4-8e8c-bc01509ed3e3@collabora.com>
Date: Thu, 8 May 2025 10:15:36 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Sirius Wang <sirius.wang@...iatek.com>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
<conor+dt@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>, Matthias Brugger
<matthias.bgg@...il.com>, Sean Wang <sean.wang@...iatek.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, wenst@...omium.org,
xavier.chang@...iatek.com
Subject: Re: [PATCH v2 3/3] arm64: dts: mt8189: Add mt8189 dts evaluation
board and Mafefile
Il 08/05/25 08:35, Sirius Wang ha scritto:
> Add mt8189 dts evaluation board and Mafefile
>
> Signed-off-by: Sirius Wang <sirius.wang@...iatek.com>
> ---
> arch/arm64/boot/dts/mediatek/Makefile | 1 +
> arch/arm64/boot/dts/mediatek/mt8189-evb.dts | 20 +
> arch/arm64/boot/dts/mediatek/mt8189.dtsi | 430 ++++++++++++++++++++
> 3 files changed, 451 insertions(+)
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8189-evb.dts
> create mode 100644 arch/arm64/boot/dts/mediatek/mt8189.dtsi
>
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index 3aa06476c6c0..ad2ac9e1bb79 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -87,6 +87,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8188-geralt-ciri-sku4.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8188-geralt-ciri-sku5.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8188-geralt-ciri-sku6.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8188-geralt-ciri-sku7.dtb
> +dtb-$(CONFIG_ARCH_MEDIATEK) += mt8189-evb.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-hayato-r1.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-asurada-spherion-r0.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8192-evb.dtb
> diff --git a/arch/arm64/boot/dts/mediatek/mt8189-evb.dts b/arch/arm64/boot/dts/mediatek/mt8189-evb.dts
> new file mode 100644
> index 000000000000..e5d9ce1b8e61
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8189-evb.dts
> @@ -0,0 +1,20 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright (C) 2025 MediaTek Inc.
> + * Author: Sirius Wang <sirius.wang@...iatek.com>
> + */
> +/dts-v1/;
> +#include "mt8189.dtsi"
> +
> +/ {
> + model = "MediaTek MT8189 evaluation board";
> + compatible = "mediatek,mt8189-evb", "mediatek,mt8189";
> +
> + chosen: chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +};
> +
> +&uart0 {
> + status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/mediatek/mt8189.dtsi b/arch/arm64/boot/dts/mediatek/mt8189.dtsi
> new file mode 100644
> index 000000000000..50c7a3811e0f
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt8189.dtsi
> @@ -0,0 +1,430 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/*
> + * Copyright (c) 2025 MediaTek Inc.
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> + compatible = "mediatek,mt8189";
> + interrupt-parent = <&gic>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + aliases {
> + serial0 = &uart0;
> + };
> +
> + clk32k: oscillator-clk32k {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <32000>;
> + clock-output-names = "clk32k";
> + };
> +
> + clk13m: oscillator-clk13m {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&clk26m>;
> + clock-mult = <1>;
> + clock-div = <2>;
> + clock-output-names = "clk13m";
> + };
> +
> + clk26m: oscillator-clk26m {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <26000000>;
> + clock-output-names = "clk26m";
> + };
> +
> + clk104m: oscillator-clk104m {
> + compatible = "fixed-factor-clock";
> + #clock-cells = <0>;
> + clocks = <&clk26m>;
> + clock-mult = <4>;
> + clock-div = <1>;
> + clock-output-names = "clk104m";
> + };
ulposc and ulposc3 go here.
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu0: cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x000>;
> + enable-method = "psci";
> + clock-frequency = <2000000000>;
> + capacity-dmips-mhz = <742>;
> + cpu-idle-states = <&cpu_off_l>, <&cpu_cluster_off_l>, <&cpu_mcusys_off_l>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <32768>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <128>;
> + d-cache-size = <32768>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <128>;
> + next-level-cache = <&l2_0>;
> + performance-domains = <&performance 0>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu1: cpu@100 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x100>;
> + enable-method = "psci";
> + clock-frequency = <2000000000>;
> + capacity-dmips-mhz = <742>;
> + cpu-idle-states = <&cpu_off_l>, <&cpu_cluster_off_l>, <&cpu_mcusys_off_l>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <32768>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <128>;
> + d-cache-size = <32768>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <128>;
> + next-level-cache = <&l2_0>;
> + performance-domains = <&performance 0>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu2: cpu@200 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x200>;
> + enable-method = "psci";
> + clock-frequency = <2000000000>;
> + capacity-dmips-mhz = <742>;
> + cpu-idle-states = <&cpu_off_l>, <&cpu_cluster_off_l>, <&cpu_mcusys_off_l>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <32768>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <128>;
> + d-cache-size = <32768>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <128>;
> + next-level-cache = <&l2_0>;
> + performance-domains = <&performance 0>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu3: cpu@300 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x300>;
> + enable-method = "psci";
> + clock-frequency = <2000000000>;
> + capacity-dmips-mhz = <742>;
> + cpu-idle-states = <&cpu_off_l>, <&cpu_cluster_off_l>, <&cpu_mcusys_off_l>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <32768>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <128>;
> + d-cache-size = <32768>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <128>;
> + next-level-cache = <&l2_0>;
> + performance-domains = <&performance 0>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu4: cpu@400 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x400>;
> + enable-method = "psci";
> + clock-frequency = <2000000000>;
> + capacity-dmips-mhz = <742>;
> + cpu-idle-states = <&cpu_off_l>, <&cpu_cluster_off_l>, <&cpu_mcusys_off_l>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <32768>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <128>;
> + d-cache-size = <32768>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <128>;
> + next-level-cache = <&l2_0>;
> + performance-domains = <&performance 0>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu5: cpu@500 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a55";
> + reg = <0x500>;
> + enable-method = "psci";
> + clock-frequency = <2000000000>;
> + capacity-dmips-mhz = <742>;
> + cpu-idle-states = <&cpu_off_l>, <&cpu_cluster_off_l>, <&cpu_mcusys_off_l>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <32768>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <128>;
> + d-cache-size = <32768>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <128>;
> + next-level-cache = <&l2_0>;
> + performance-domains = <&performance 0>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu6: cpu@600 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a78";
> + reg = <0x600>;
> + enable-method = "psci";
> + clock-frequency = <3000000000>;
> + capacity-dmips-mhz = <958>;
> + cpu-idle-states = <&cpu_off_m>, <&cpu_cluster_off_m>, <&cpu_mcusys_off_m>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <65536>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <256>;
> + d-cache-size = <65536>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <256>;
> + next-level-cache = <&l2_1>;
> + performance-domains = <&performance 1>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu7: cpu@700 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a78";
> + reg = <0x700>;
> + enable-method = "psci";
> + clock-frequency = <3000000000>;
> + capacity-dmips-mhz = <958>;
> + cpu-idle-states = <&cpu_off_m>, <&cpu_cluster_off_m>, <&cpu_mcusys_off_m>,
> + <&cpu_system_vcore>, <&cpu_s2idle>;
> + i-cache-size = <65536>;
> + i-cache-line-size = <64>;
> + i-cache-sets = <256>;
> + d-cache-size = <65536>;
> + d-cache-line-size = <64>;
> + d-cache-sets = <256>;
> + next-level-cache = <&l2_1>;
> + performance-domains = <&performance 1>;
> + #cooling-cells = <2>;
> + };
> +
> + cpu-map {
> + cluster0 {
> + core0 {
> + cpu = <&cpu0>;
> + };
> + core1 {
> + cpu = <&cpu1>;
> + };
> + core2 {
> + cpu = <&cpu2>;
> + };
> + core3 {
> + cpu = <&cpu3>;
> + };
> + core4 {
> + cpu = <&cpu4>;
> + };
> + core5 {
> + cpu = <&cpu5>;
> + };
> + };
> +
> + cluster1 {
Is this really an old-style dual cluster SoC, or is this ARM DynamIQ?
If this is the latter (and I believe it is), this SoC features a "single, fully
integrated cluster".
> + core0 {
> + cpu = <&cpu6>;
> + };
> + core1 {
> + cpu = <&cpu7>;
> + };
> + };
> + };
> +
> + idle-states {
> + entry-method = "psci";
> +
> + cpu_off_l: cpu-off-l {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x00010000>;
> + local-timer-stop;
> + entry-latency-us = <97>;
> + exit-latency-us = <252>;
> + min-residency-us = <6710>;
> + };
> +
> + cpu_off_m: cpu-off-m {
what does "m" stand for?
should this be cpu-off-b (where b==big and l==little) instead?
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x00010000>;
> + local-timer-stop;
> + entry-latency-us = <53>;
> + exit-latency-us = <143>;
> + min-residency-us = <2120>;
> + };
> +
> + cpu_cluster_off_l: cpu-cluster-off-l {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x01010001>;
> + local-timer-stop;
> + entry-latency-us = <109>;
> + exit-latency-us = <325>;
> + min-residency-us = <6710>;
> + };
> +
> + cpu_cluster_off_m: cpu-cluster-off-m {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x01010001>;
> + local-timer-stop;
> + entry-latency-us = <59>;
> + exit-latency-us = <188>;
> + min-residency-us = <2120>;
> + };
> +
> + cpu_mcusys_off_l: cpu-mcusys-off-l {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x02010007>;
> + local-timer-stop;
> + entry-latency-us = <1357>;
> + exit-latency-us = <835>;
> + min-residency-us = <6710>;
> + };
> +
> + cpu_mcusys_off_m: cpu-mcusys-off-m {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x02010007>;
> + local-timer-stop;
> + entry-latency-us = <1202>;
> + exit-latency-us = <679>;
> + min-residency-us = <2120>;
> + };
> +
> + cpu_system_vcore: cpu-system-vcore {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x020100ff>;
> + local-timer-stop;
> + entry-latency-us = <940>;
> + exit-latency-us = <3500>;
> + min-residency-us = <35200>;
> + };
> +
> + cpu_s2idle: cpu-s2idle {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x020180ff>;
> + local-timer-stop;
> + entry-latency-us = <10000>;
> + exit-latency-us = <10000>;
> + min-residency-us = <4294967295>;
> + };
> + };
> +
> + l2_0: l2-cache0 {
> + compatible = "cache";
> + cache-level = <2>;
> + cache-size = <131072>;
> + cache-line-size = <64>;
> + cache-sets = <512>;
> + next-level-cache = <&l3_0>;
> + cache-unified;
> + };
> +
> + l2_1: l2-cache1 {
> + compatible = "cache";
> + cache-level = <2>;
> + cache-size = <262144>;
> + cache-line-size = <64>;
> + cache-sets = <512>;
> + next-level-cache = <&l3_0>;
> + cache-unified;
> + };
> +
> + l3_0: l3-cache {
> + compatible = "cache";
> + cache-level = <3>;
> + cache-size = <1048576>;
> + cache-line-size = <64>;
> + cache-sets = <2048>;
> + cache-unified;
> + };
> + };
> +
> + psci {
> + compatible = "arm,psci-1.0";
> + method = "smc";
> + };
> +
> + memory: memory@...00000 {
> + device_type = "memory";
> + reg = <0 0x40000000 0 0xC0000000>;
> + };
> +
psci goes here
Regards,
Angelo
> + timer: timer {
> + compatible = "arm,armv8-timer";
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH 0>,
> + <GIC_PPI 14 IRQ_TYPE_LEVEL_HIGH 0>,
> + <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH 0>,
> + <GIC_PPI 10 IRQ_TYPE_LEVEL_HIGH 0>;
> + };
> +
> + soc {
> + compatible = "simple-bus";
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> + dma-ranges = <0x0 0x0 0x0 0x0 0x10 0x0>;
> +
> + performance: performance-controller@...c10 {
> + compatible = "mediatek,cpufreq-hw";
> + reg = <0 0x0011bc10 0 0x120>, <0 0x0011bd30 0 0x120>;
> + #performance-domain-cells = <1>;
> + };
> +
> + gic: interrupt-controller@...0000 {
> + compatible = "arm,gic-v3";
> + #interrupt-cells = <4>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> + interrupt-parent = <&gic>;
> + interrupt-controller;
> + reg = <0 0xc000000 0 0x40000>, /* distributor */
> + <0 0xc040000 0 0x200000>; /* redistributor */
> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH 0>;
> +
> + ppi-partitions {
> + ppi_cluster0: interrupt-partition-0 {
> + affinity = <&cpu0 &cpu1 &cpu2 &cpu3 &cpu4 &cpu5>;
> + };
> +
> + ppi_cluster1: interrupt-partition-1 {
> + affinity = <&cpu6 &cpu7>;
> + };
> + };
> + };
> +
> + uart0: serial@...01000 {
> + compatible = "mediatek,mt8189-uart", "mediatek,mt6577-uart";
> + reg = <0 0x11001000 0 0x1000>;
> + interrupts = <GIC_SPI 397 IRQ_TYPE_LEVEL_HIGH 0>;
> + clocks = <&clk26m>, <&clk26m>;
> + clock-names = "baud", "bus";
> + status = "disabled";
> + };
> + };
> +
> + ulposc: oscillator-ulposc {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <520000000>;
> + clock-output-names = "ulposc";
> + };
> +
> + ulposc3: oscillator-ulposc3 {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <26000000>;
> + clock-output-names = "ulposc3";
> + };
> +};
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