[PATCH v6 3/3] arm64: dts: mediatek: add basic mt7986b support
From: Sam Shih <hidden>
Date: 2021-10-14 07:50:49
Also in:
linux-arm-kernel, linux-devicetree, lkml
Subsystem:
arm/mediatek soc support, the rest · Maintainers:
Matthias Brugger, AngeloGioacchino Del Regno, Linus Torvalds
Add basic chip support for Mediatek mt7986b, include
basic uart nodes, rng node and watchdog node.
Add cpu node, timer node, gic node, psci and reserved-memory node
for ARM Trusted Firmware.
Signed-off-by: Sam Shih <redacted>
---
v6: separate basic part into a single patch series
v5: follow reviewr's comment: removed clock freqency node in timer due to
we have set CNTFRQ_EL0 in ATF firmware, and also corrected GICD range
v4: added missing gic register bases, and fixed range of GICR
v3: used the stdout-path instead of console=ttyS0
v2: modified clock and uart node due to clock driver updated
---
arch/arm64/boot/dts/mediatek/Makefile | 1 +
arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts | 26 ++++
arch/arm64/boot/dts/mediatek/mt7986b.dtsi | 149 +++++++++++++++++++
3 files changed, 176 insertions(+)
create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b.dtsi
diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index e6c3a73b9e4a..d555e43d1ccc 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb +dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
new file mode 100644
index 000000000000..95a202505bb2
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts@@ -0,0 +1,26 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Copyright (C) 2021 MediaTek Inc. + * Author: Sam.Shih <sam.shih@mediatek.com> + */ + +/dts-v1/; +#include "mt7986b.dtsi" + +/ { + model = "MediaTek MT7986b RFB"; + compatible = "mediatek,mt7986b-rfb"; + + aliases { + serial0 = &uart0; + }; + + chosen { + stdout-path = "serial0:115200n8"; + bootargs = "earlycon=uart8250,mmio32,0x11002000 swiotlb=512"; + }; +}; + +&uart0 { + status = "okay"; +};
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b.dtsi b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
new file mode 100644
index 000000000000..2b8e0a382398
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi@@ -0,0 +1,149 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Copyright (C) 2021 MediaTek Inc. + * Author: Sam.Shih <sam.shih@mediatek.com> + */ + +#include <dt-bindings/interrupt-controller/irq.h> +#include <dt-bindings/interrupt-controller/arm-gic.h> + +/ { + compatible = "mediatek,mt7986b"; + interrupt-parent = <&gic>; + #address-cells = <2>; + #size-cells = <2>; + + system_clk: dummy40m { + compatible = "fixed-clock"; + clock-frequency = <40000000>; + #clock-cells = <0>; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + enable-method = "psci"; + reg = <0x0>; + #cooling-cells = <2>; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + enable-method = "psci"; + reg = <0x1>; + #cooling-cells = <2>; + }; + + cpu2: cpu@2 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + enable-method = "psci"; + reg = <0x2>; + #cooling-cells = <2>; + }; + + cpu3: cpu@3 { + device_type = "cpu"; + enable-method = "psci"; + compatible = "arm,cortex-a53"; + reg = <0x3>; + #cooling-cells = <2>; + }; + }; + + psci { + compatible = "arm,psci-0.2"; + method = "smc"; + }; + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + /* 192 KiB reserved for ARM Trusted Firmware (BL31) */ + secmon_reserved: secmon@43000000 { + reg = <0 0x43000000 0 0x30000>; + no-map; + }; + }; + + timer { + compatible = "arm,armv8-timer"; + interrupt-parent = <&gic>; + 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>; + }; + + soc { + #address-cells = <2>; + #size-cells = <2>; + compatible = "simple-bus"; + ranges; + + gic: interrupt-controller@c000000 { + compatible = "arm,gic-v3"; + #interrupt-cells = <3>; + interrupt-parent = <&gic>; + interrupt-controller; + reg = <0 0x0c000000 0 0x10000>, /* GICD */ + <0 0x0c080000 0 0x80000>, /* GICR */ + <0 0x0c400000 0 0x2000>, /* GICC */ + <0 0x0c410000 0 0x1000>, /* GICH */ + <0 0x0c420000 0 0x2000>; /* GICV */ + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>; + }; + + watchdog: watchdog@1001c000 { + compatible = "mediatek,mt7986-wdt", + "mediatek,mt6589-wdt"; + reg = <0 0x1001c000 0 0x1000>; + interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>; + #reset-cells = <1>; + status = "disabled"; + }; + + trng: trng@1020f000 { + compatible = "mediatek,mt7986-rng", + "mediatek,mt7623-rng"; + reg = <0 0x1020f000 0 0x100>; + clocks = <&system_clk>; + clock-names = "rng"; + status = "disabled"; + }; + + uart0: serial@11002000 { + compatible = "mediatek,mt7986-uart", + "mediatek,mt6577-uart"; + reg = <0 0x11002000 0 0x400>; + interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&system_clk>; + status = "disabled"; + }; + + uart1: serial@11003000 { + compatible = "mediatek,mt7986-uart", + "mediatek,mt6577-uart"; + reg = <0 0x11003000 0 0x400>; + interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&system_clk>; + status = "disabled"; + }; + + uart2: serial@11004000 { + compatible = "mediatek,mt7986-uart", + "mediatek,mt6577-uart"; + reg = <0 0x11004000 0 0x400>; + interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&system_clk>; + status = "disabled"; + }; + + }; + +};
--
2.29.2
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