[PATCH 1/3] arm64: dts: mediatek: Introduce MT8195 LAPTOP and IOT's USB configurations
Chunfeng Yun (云春峰)
Chunfeng.Yun at mediatek.com
Tue Jan 10 18:19:01 PST 2023
On Fri, 2023-01-06 at 13:56 +0100, Krzysztof Kozlowski wrote:
> On 05/01/2023 10:28, Macpaul Lin wrote:
> > Introduce the split MT8195 laptop and iot USB configurations.
> > The hardware specifications for LAPTOP devices is different from
> > IOT
> > devices. The major differences include some hardware constrains for
> > dual-role switch for USB controllers in different configurations,
> > especially for power management and other control flows as well.
> >
> > Here are some hardware specifiction differences listed:
> > 1. LAPTOP (Cherry Tomato boards) don't support USB gadget (device
> > mode).
> > 2. IOT devices must support multiple gadget devices and host
> > mode.
> > 3. Dual-role switch is not fully supported. Only USB PORT0
> > support
> > dual-role switch.
> > 4. Power management is designed in primary and secondary
> > dominator.
> > For a dual-role port, the device controller is the primary
> > controller
> > for power management; while the host controller is the
> > secondary.
> > LAPTOP devices should remove device nodes for avoiding
> > abnormal
> > behavior.
> >
> > This modifcation is to add USB configurations "mt8195-laptop-
> > usb.dtsi"
> > for LAPTOP devices, and add "mt8195-iot-usb.dtsi" for IOT devices.
> >
> > To remove common USB configurations for mt8195.dtsi and switch
> > includes
> > dtsi these new files for the boards will come in next patch.
> >
> > Signed-off-by: Macpaul Lin <macpaul.lin at mediatek.com>
> > ---
> > .../boot/dts/mediatek/mt8195-iot-usb.dtsi | 122
> > ++++++++++++++++++
> > .../boot/dts/mediatek/mt8195-laptop-usb.dtsi | 102
> > +++++++++++++++
> > 2 files changed, 224 insertions(+)
> > create mode 100644 arch/arm64/boot/dts/mediatek/mt8195-iot-
> > usb.dtsi
> > create mode 100644 arch/arm64/boot/dts/mediatek/mt8195-laptop-
> > usb.dtsi
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8195-iot-usb.dtsi
> > b/arch/arm64/boot/dts/mediatek/mt8195-iot-usb.dtsi
> > new file mode 100644
> > index 000000000000..f9bd79542044
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt8195-iot-usb.dtsi
> > @@ -0,0 +1,122 @@
> > +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> > +/*
> > + * Copyright (C) 2022 MediaTek Inc.
> > + */
> > +
> > +#include "mt8195.dtsi"
> > +
> > +/ {
> > + soc {
> > + ssusb: ssusb at 11200000 {
>
> Node name: usb
>
> > + compatible ="mediatek,mt8183-mtu3",
> > "mediatek,mtu3";
> > + reg = <0 0x11201000 0 0x2dff>,
> > + <0 0x11203e00 0 0x0100>;
> > + reg-names = "mac", "ippc";
> > + interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > + phys = <&u2port0 PHY_TYPE_USB2>,
> > + <&u3port0 PHY_TYPE_USB3>;
> > + clocks = <&infracfg_ao CLK_INFRA_AO_SSUSB>,
> > + <&topckgen CLK_TOP_SSUSB_REF>,
> > + <&infracfg_ao
> > CLK_INFRA_AO_SSUSB_XHCI>;
> > + clock-names = "sys_ck", "ref_ck", "mcu_ck";
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + ranges;
> > + status = "disabled";
> > +
> > + xhci0: xhci at 11200000 {
s/xhci/usb
> > + compatible = "mediatek,mt8195-xhci",
> > + "mediatek,mtk-xhci";
> > + reg = <0 0x11200000 0 0x1000>;
> > + reg-names = "mac";
> > + interrupts = <GIC_SPI 129
> > IRQ_TYPE_LEVEL_HIGH 0>;
> > + assigned-clocks = <&topckgen
> > CLK_TOP_USB_TOP>,
> > + <&topckgen
> > CLK_TOP_SSUSB_XHCI>;
> > + assigned-clock-parents = <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>,
> > + <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>;
> > + clocks = <&infracfg_ao
> > CLK_INFRA_AO_SSUSB>,
> > + <&infracfg_ao
> > CLK_INFRA_AO_SSUSB_XHCI>,
> > + <&topckgen CLK_TOP_SSUSB_REF>,
> > + <&apmixedsys
> > CLK_APMIXED_USB1PLL>;
> > + clock-names = "sys_ck", "xhci_ck",
> > "ref_ck", "mcu_ck";
> > + status = "disabled";
> > + };
> > + };
> > +
> > + xhci1: xhci1 at 11290000 {
>
> Node names should be generic, so just "xhci"
also use "usb", no generic name "xhci" in the following spec
>
https://urldefense.com/v3/__https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html*generic-names-recommendation__;Iw!!CTRNKA9wMg0ARbw!n5NxtuBHI5f9tS659pqDgRDZNAFxnXriet0G48KA64n1CEWYYsL0vXY0I-Mw99H8a8UDW5KR_79k7IvYg8Er5gNvmkXE9HZH$
>
>
> > + compatible = "mediatek,mt8195-xhci",
> > + "mediatek,mtk-xhci";
> > + reg = <0 0x11290000 0 0x1000>,
> > + <0 0x11293e00 0 0x0100>;
> > + reg-names = "mac", "ippc";
> > + interrupts = <GIC_SPI 530 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > + phys = <&u2port1 PHY_TYPE_USB2>,
> > + <&u3port1 PHY_TYPE_USB3>;
> > + assigned-clocks = <&topckgen
> > CLK_TOP_USB_TOP_1P>,
> > + <&topckgen
> > CLK_TOP_SSUSB_XHCI_1P>;
> > + assigned-clock-parents = <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>,
> > + <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>;
> > + clocks = <&pericfg_ao
> > CLK_PERI_AO_SSUSB_1P_BUS>,
> > + <&pericfg_ao
> > CLK_PERI_AO_SSUSB_1P_XHCI>,
> > + <&topckgen CLK_TOP_SSUSB_P1_REF>,
> > + <&apmixedsys CLK_APMIXED_USB1PLL>;
> > + clock-names = "sys_ck", "xhci_ck", "ref_ck",
> > "mcu_ck";
> > + status = "disabled";
> > + };
> > +
> > + ssusb1: usb1 at 112a1000 {
>
> usb
>
> > + compatible = "mediatek,mt8183-mtu3",
> > "mediatek,mtu3";
> > + reg = <0 0x112a1000 0 0x2dff>,
> > + <0 0x112a3e00 0 0x0100>;
> > + reg-names = "mac", "ippc";
> > + interrupts = <GIC_SPI 532 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > + phys = <&u2port2 PHY_TYPE_USB2>;
> > + assigned-clocks = <&topckgen
> > CLK_TOP_USB_TOP_2P>;
> > + assigned-clock-parents = <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>;
> > + clocks = <&pericfg_ao
> > CLK_PERI_AO_SSUSB_2P_BUS>,
> > + <&topckgen CLK_TOP_SSUSB_P2_REF>,
> > + <&pericfg_ao
> > CLK_PERI_AO_SSUSB_2P_XHCI>;
> > + clock-names = "sys_ck", "ref_ck", "mcu_ck";
> > + mediatek,syscon-wakeup = <&pericfg 0x400 4>;
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + ranges;
> > + status = "disabled";
> > +
> > + xhci2: xhci2 at 112a0000 {
>
> xhci
use "usb", no need change it when move from mt8195.dtsi
>
> > + compatible = "mediatek,mt8195-
> > xhci","mediatek,mtk-xhci";
> > + reg = <0 0x112a0000 0 0x1000>;
> > + reg-names = "mac";
> > + interrupts-extended = <&gic GIC_SPI 533
> > IRQ_TYPE_LEVEL_HIGH 0>,
> > + <&pio 220
> > IRQ_TYPE_EDGE_FALLING>;
> > + assigned-clocks = <&topckgen
> > CLK_TOP_SSUSB_XHCI_2P>;
> > + assigned-clock-parents = <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>;
> > + clocks = <&pericfg_ao
> > CLK_PERI_AO_SSUSB_2P_XHCI>;
> > + clock-names = "sys_ck";
> > + status = "disabled";
> > + };
> > + };
> > +
> > + xhci3: xhci3 at 112b0000 {
>
> xhci
usb
> > + compatible = "mediatek,mt8195-xhci",
> > + "mediatek,mtk-xhci";
> > + reg = <0 0x112b0000 0 0x1000>,
> > + <0 0x112b3e00 0 0x0100>;
> > + reg-names = "mac", "ippc";
> > + interrupts = <GIC_SPI 536 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > + phys = <&u2port3 PHY_TYPE_USB2>;
> > + assigned-clocks = <&topckgen
> > CLK_TOP_USB_TOP_3P>,
> > + <&topckgen
> > CLK_TOP_SSUSB_XHCI_3P>;
> > + assigned-clock-parents = <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>,
> > + <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>;
> > + clocks = <&pericfg_ao
> > CLK_PERI_AO_SSUSB_3P_BUS>,
> > + <&pericfg_ao
> > CLK_PERI_AO_SSUSB_3P_XHCI>,
> > + <&topckgen CLK_TOP_SSUSB_P3_REF>;
> > + clock-names = "sys_ck", "xhci_ck", "ref_ck";
> > + mediatek,syscon-wakeup = <&pericfg 0x400 106>;
> > + wakeup-source;
> > + usb2-lpm-disable;
> > + status = "disabled";
> > + };
>
>
> Best regards,
> Krzysztof
>
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