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Message-ID: <d363d5ca3b0059d7085fe1790b7f57bff80147ff.camel@mediatek.com>
Date: Fri, 10 Dec 2021 14:33:48 +0800
From: Chunfeng Yun <chunfeng.yun@...iatek.com>
To: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh+dt@...nel.org>,
Mathias Nyman <mathias.nyman@...el.com>
CC: Matthias Brugger <matthias.bgg@...il.com>,
<linux-usb@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] arm64: dts: mediatek: Add USB xHCI controller for
mt8195
On Fri, 2021-11-26 at 11:36 +0100, AngeloGioacchino Del Regno wrote:
> Il 02/11/21 07:00, Chunfeng Yun ha scritto:
> > Add all four USB xHCI controllers for MT8195
> >
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> > ---
> > arch/arm64/boot/dts/mediatek/mt8195.dtsi | 79
> > ++++++++++++++++++++++++
> > 1 file changed, 79 insertions(+)
> >
>
> Hello!
> Thanks for the patch! However, there is something to improve...
>
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > index a59c0e9d1fc2..263eebfd2ea1 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > @@ -8,6 +8,7 @@
> > #include <dt-bindings/clock/mt8195-clk.h>
> > #include <dt-bindings/interrupt-controller/arm-gic.h>
> > #include <dt-bindings/interrupt-controller/irq.h>
> > +#include <dt-bindings/phy/phy.h>
> > #include <dt-bindings/power/mt8195-power.h>
> >
> > / {
> > @@ -823,6 +824,26 @@
> > status = "disabled";
> > };
> >
> > + xhci0: usb@...00000 {
> > + compatible = "mediatek,mt8195-xhci",
> > "mediatek,mtk-xhci";
> > + reg = <0 0x11200000 0 0x1000>, <0 0x11203e00 0
> > 0x0100>;
> > + reg-names = "mac", "ippc";
> > + interrupts = <GIC_SPI 129 IRQ_TYPE_LEVEL_HIGH
> > 0>;
>
> Here, and on the other xhci nodes (from what I know, xhci{0,1,3}),
> you should use
> interrupts-extended and declare the wakeup interrupt on pio.
>
> interrupts-extended = <&gic GIC_SPI 129
> IRQ_TYPE_LEVEL_HIGH 0>,
>
> <&pio 219
> IRQ_TYPE_LEVEL_LOW>;
>
> interrupt-names = "host", "wakeup";
Ok, this patch doesn't support runtime suspend, will add it in next
version, thanks a lot
>
>
> > + phys = <&u2port0 PHY_TYPE_USB2>, <&u3port0
> > PHY_TYPE_USB3>;
> > + 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";
> > + mediatek,syscon-wakeup = <&pericfg 0x400 103>;
> > + wakeup-source;
> > + status = "disabled";
> > + };
> > +
> > mmc0: mmc@...30000 {
> > compatible = "mediatek,mt8195-mmc",
> > "mediatek,mt8192-mmc";
> > reg = <0 0x11230000 0 0x10000>,
> > @@ -843,6 +864,64 @@
> > status = "disabled";
> > };
> >
> > + xhci1: usb@...90000 {
> > + 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>;
>
> interrupts-extended = <&gic GIC_SPI 530
> IRQ_TYPE_LEVEL_HIGH 0>,
>
> <&pio 218
> IRQ_TYPE_LEVEL_LOW>;
>
> > + phys = <&u2port1 PHY_TYPE_USB2>;
> > + 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";
> > + mediatek,syscon-wakeup = <&pericfg 0x400 104>;
> > + wakeup-source;
> > + status = "disabled";
> > + };
> > +
> > + xhci2: usb@...a0000 {
> > + compatible = "mediatek,mt8195-xhci",
> > "mediatek,mtk-xhci";
> > + reg = <0 0x112a0000 0 0x1000>, <0 0x112a3e00 0
> > 0x0100>;
> > + reg-names = "mac", "ippc";
> > + interrupts = <GIC_SPI 533 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > + phys = <&u2port2 PHY_TYPE_USB2>;
> > + assigned-clocks = <&topckgen
> > CLK_TOP_USB_TOP_2P>,
> > + <&topckgen
> > CLK_TOP_SSUSB_XHCI_2P>;
> > + assigned-clock-parents = <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>,
> > + <&topckgen
> > CLK_TOP_UNIVPLL_D5_D4>;
> > + clocks = <&pericfg_ao
> > CLK_PERI_AO_SSUSB_2P_BUS>,
> > + <&pericfg_ao
> > CLK_PERI_AO_SSUSB_2P_XHCI>,
> > + <&topckgen CLK_TOP_SSUSB_P2_REF>;
> > + clock-names = "sys_ck", "xhci_ck", "ref_ck";
> > + mediatek,syscon-wakeup = <&pericfg 0x400 105>;
> > + status = "disabled";
> > + };
> > +
> > + xhci3: usb@...b0000 {
> > + 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>;
>
> interrupts-extended = <&gic GIC_SPI 536
> IRQ_TYPE_LEVEL_HIGH 0>,
>
> <&pio 221
> IRQ_TYPE_LEVEL_LOW>;
>
> interrupts-names = "host", "wakeup";
>
> > + 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";
> > + };
> > +
> > nor_flash: nor@...2c000 {
> > compatible = "mediatek,mt8195-nor",
> > "mediatek,mt8173-nor";
> > reg = <0 0x1132c000 0 0x1000>;
> >
>
> Regards,
> - Angelo
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