Re: [PATCH v6 3/3] arm64: dts: mediatek: add basic mt7986b support
From: Sam Shih
Date: Fri Oct 22 2021 - 02:00:48 EST
Hi Matthias, Rob and Maintainers,
For memory nodes in DT,
I have replied in this thread:
https://lore.kernel.org/lkml/632e8d11-269c-d329-abf4-5d462aac4df4@xxxxxxxxx/t/#ma52ca22a3c6dc109eea034bc94f4f22e13f105ff
I have added memory node back to the DT.
This is V7 for the patchset:
https://lore.kernel.org/all/20211018114009.13350-1-sam.shih@xxxxxxxxxxxx/
Just Gentle ping for this patch.
Thanks
Best Regards,
Sam
On Thu, 2021-10-14 at 17:32 +0200, Matthias Brugger wrote:
>
> On 14/10/2021 09:44, Sam Shih wrote:
> > 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 <sam.shih@xxxxxxxxxxxx>
> >
> > ---
> > 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@xxxxxxxxxxxx>
> > + */
> > +
> > +/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";
> > +};
>
> We are missing a memory node here. I wonder how the board was able to
> boot
> without memory. Did you test this series?
>
> Regards,
> Matthias
>
> > 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@xxxxxxxxxxxx>
> > + */
> > +
> > +#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";
> > + };
> > +
> > + };
> > +
> > +};
> >