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Date: Tue, 21 Sep 2021 20:43:04 +0200
From: Matthias Brugger <matthias.bgg@...il.com>
To: Chuanjia Liu <chuanjia.liu@...iatek.com>, robh+dt@...nel.org,
bhelgaas@...gle.com, lorenzo.pieralisi@....com
Cc: ryder.lee@...iatek.com, jianjun.wang@...iatek.com,
yong.wu@...iatek.com, linux-pci@...r.kernel.org,
linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v12 5/6] arm64: dts: mediatek: Split PCIe node for MT2712
and MT7622
On 23/08/2021 05:27, Chuanjia Liu wrote:
> There are two independent PCIe controllers in MT2712 and MT7622
> platform. Each of them should contain an independent MSI domain.
>
> In old dts architecture, MSI domain will be inherited from the root
> bridge, and all of the devices will share the same MSI domain.
> Hence that, the PCIe devices will not work properly if the irq number
> which required is more than 32.
>
> Split the PCIe node for MT2712 and MT7622 platform to comply with
> the hardware design and fix MSI issue.
>
> Signed-off-by: Chuanjia Liu <chuanjia.liu@...iatek.com>
> Acked-by: Ryder Lee <ryder.lee@...iatek.com>
Queued in v5.15-next/dts64
Thanks!
> ---
> arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 97 +++++++--------
> .../dts/mediatek/mt7622-bananapi-bpi-r64.dts | 16 ++-
> arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts | 6 +-
> arch/arm64/boot/dts/mediatek/mt7622.dtsi | 112 ++++++++++--------
> 4 files changed, 118 insertions(+), 113 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
> index a9cca9c146fd..de16c0d80c30 100644
> --- a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
> @@ -915,64 +915,67 @@
> };
> };
>
> - pcie: pcie@...00000 {
> + pcie1: pcie@...ff000 {
> compatible = "mediatek,mt2712-pcie";
> device_type = "pci";
> - reg = <0 0x11700000 0 0x1000>,
> - <0 0x112ff000 0 0x1000>;
> - reg-names = "port0", "port1";
> + reg = <0 0x112ff000 0 0x1000>;
> + reg-names = "port1";
> + linux,pci-domain = <1>;
> #address-cells = <3>;
> #size-cells = <2>;
> - interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
> - <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>,
> - <&topckgen CLK_TOP_PE2_MAC_P1_SEL>,
> - <&pericfg CLK_PERI_PCIE0>,
> + interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "pcie_irq";
> + clocks = <&topckgen CLK_TOP_PE2_MAC_P1_SEL>,
> <&pericfg CLK_PERI_PCIE1>;
> - clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1";
> - phys = <&u3port0 PHY_TYPE_PCIE>, <&u3port1 PHY_TYPE_PCIE>;
> - phy-names = "pcie-phy0", "pcie-phy1";
> + clock-names = "sys_ck1", "ahb_ck1";
> + phys = <&u3port1 PHY_TYPE_PCIE>;
> + phy-names = "pcie-phy1";
> bus-range = <0x00 0xff>;
> - ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>;
> + ranges = <0x82000000 0 0x11400000 0x0 0x11400000 0 0x300000>;
> + status = "disabled";
>
> - pcie0: pcie@0,0 {
> - device_type = "pci";
> - status = "disabled";
> - reg = <0x0000 0 0 0 0>;
> - #address-cells = <3>;
> - #size-cells = <2>;
> + #interrupt-cells = <1>;
> + interrupt-map-mask = <0 0 0 7>;
> + interrupt-map = <0 0 0 1 &pcie_intc1 0>,
> + <0 0 0 2 &pcie_intc1 1>,
> + <0 0 0 3 &pcie_intc1 2>,
> + <0 0 0 4 &pcie_intc1 3>;
> + pcie_intc1: interrupt-controller {
> + interrupt-controller;
> + #address-cells = <0>;
> #interrupt-cells = <1>;
> - ranges;
> - interrupt-map-mask = <0 0 0 7>;
> - interrupt-map = <0 0 0 1 &pcie_intc0 0>,
> - <0 0 0 2 &pcie_intc0 1>,
> - <0 0 0 3 &pcie_intc0 2>,
> - <0 0 0 4 &pcie_intc0 3>;
> - pcie_intc0: interrupt-controller {
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <1>;
> - };
> };
> + };
>
> - pcie1: pcie@1,0 {
> - device_type = "pci";
> - status = "disabled";
> - reg = <0x0800 0 0 0 0>;
> - #address-cells = <3>;
> - #size-cells = <2>;
> + pcie0: pcie@...00000 {
> + compatible = "mediatek,mt2712-pcie";
> + device_type = "pci";
> + reg = <0 0x11700000 0 0x1000>;
> + reg-names = "port0";
> + linux,pci-domain = <0>;
> + #address-cells = <3>;
> + #size-cells = <2>;
> + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "pcie_irq";
> + clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>,
> + <&pericfg CLK_PERI_PCIE0>;
> + clock-names = "sys_ck0", "ahb_ck0";
> + phys = <&u3port0 PHY_TYPE_PCIE>;
> + phy-names = "pcie-phy0";
> + bus-range = <0x00 0xff>;
> + ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>;
> + status = "disabled";
> +
> + #interrupt-cells = <1>;
> + interrupt-map-mask = <0 0 0 7>;
> + interrupt-map = <0 0 0 1 &pcie_intc0 0>,
> + <0 0 0 2 &pcie_intc0 1>,
> + <0 0 0 3 &pcie_intc0 2>,
> + <0 0 0 4 &pcie_intc0 3>;
> + pcie_intc0: interrupt-controller {
> + interrupt-controller;
> + #address-cells = <0>;
> #interrupt-cells = <1>;
> - ranges;
> - interrupt-map-mask = <0 0 0 7>;
> - interrupt-map = <0 0 0 1 &pcie_intc1 0>,
> - <0 0 0 2 &pcie_intc1 1>,
> - <0 0 0 3 &pcie_intc1 2>,
> - <0 0 0 4 &pcie_intc1 3>;
> - pcie_intc1: interrupt-controller {
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <1>;
> - };
> };
> };
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> index 2f77dc40b9b8..2b9bf8dd14ec 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> @@ -257,18 +257,16 @@
> };
> };
>
> -&pcie {
> +&pcie0 {
> pinctrl-names = "default";
> - pinctrl-0 = <&pcie0_pins>, <&pcie1_pins>;
> + pinctrl-0 = <&pcie0_pins>;
> status = "okay";
> +};
>
> - pcie@0,0 {
> - status = "okay";
> - };
> -
> - pcie@1,0 {
> - status = "okay";
> - };
> +&pcie1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pcie1_pins>;
> + status = "okay";
> };
>
> &pio {
> diff --git a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
> index f2dc850010f1..596c073d8b05 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
> @@ -234,14 +234,10 @@
> };
> };
>
> -&pcie {
> +&pcie0 {
> pinctrl-names = "default";
> pinctrl-0 = <&pcie0_pins>;
> status = "okay";
> -
> - pcie@0,0 {
> - status = "okay";
> - };
> };
>
> &pio {
> diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> index 890a942ec608..6f8cb3ad1e84 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> @@ -781,75 +781,83 @@
> #reset-cells = <1>;
> };
>
> - pcie: pcie@...40000 {
> + pciecfg: pciecfg@...40000 {
> + compatible = "mediatek,generic-pciecfg", "syscon";
> + reg = <0 0x1a140000 0 0x1000>;
> + };
> +
> + pcie0: pcie@...43000 {
> compatible = "mediatek,mt7622-pcie";
> device_type = "pci";
> - reg = <0 0x1a140000 0 0x1000>,
> - <0 0x1a143000 0 0x1000>,
> - <0 0x1a145000 0 0x1000>;
> - reg-names = "subsys", "port0", "port1";
> + reg = <0 0x1a143000 0 0x1000>;
> + reg-names = "port0";
> + linux,pci-domain = <0>;
> #address-cells = <3>;
> #size-cells = <2>;
> - interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>,
> - <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
> + interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>;
> + interrupt-names = "pcie_irq";
> clocks = <&pciesys CLK_PCIE_P0_MAC_EN>,
> - <&pciesys CLK_PCIE_P1_MAC_EN>,
> - <&pciesys CLK_PCIE_P0_AHB_EN>,
> <&pciesys CLK_PCIE_P0_AHB_EN>,
> <&pciesys CLK_PCIE_P0_AUX_EN>,
> - <&pciesys CLK_PCIE_P1_AUX_EN>,
> <&pciesys CLK_PCIE_P0_AXI_EN>,
> - <&pciesys CLK_PCIE_P1_AXI_EN>,
> <&pciesys CLK_PCIE_P0_OBFF_EN>,
> - <&pciesys CLK_PCIE_P1_OBFF_EN>,
> - <&pciesys CLK_PCIE_P0_PIPE_EN>,
> - <&pciesys CLK_PCIE_P1_PIPE_EN>;
> - clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1",
> - "aux_ck0", "aux_ck1", "axi_ck0", "axi_ck1",
> - "obff_ck0", "obff_ck1", "pipe_ck0", "pipe_ck1";
> + <&pciesys CLK_PCIE_P0_PIPE_EN>;
> + clock-names = "sys_ck0", "ahb_ck0", "aux_ck0",
> + "axi_ck0", "obff_ck0", "pipe_ck0";
> +
> power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
> bus-range = <0x00 0xff>;
> - ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>;
> + ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x8000000>;
> status = "disabled";
>
> - pcie0: pcie@0,0 {
> - reg = <0x0000 0 0 0 0>;
> - #address-cells = <3>;
> - #size-cells = <2>;
> + #interrupt-cells = <1>;
> + interrupt-map-mask = <0 0 0 7>;
> + interrupt-map = <0 0 0 1 &pcie_intc0 0>,
> + <0 0 0 2 &pcie_intc0 1>,
> + <0 0 0 3 &pcie_intc0 2>,
> + <0 0 0 4 &pcie_intc0 3>;
> + pcie_intc0: interrupt-controller {
> + interrupt-controller;
> + #address-cells = <0>;
> #interrupt-cells = <1>;
> - ranges;
> - status = "disabled";
> -
> - interrupt-map-mask = <0 0 0 7>;
> - interrupt-map = <0 0 0 1 &pcie_intc0 0>,
> - <0 0 0 2 &pcie_intc0 1>,
> - <0 0 0 3 &pcie_intc0 2>,
> - <0 0 0 4 &pcie_intc0 3>;
> - pcie_intc0: interrupt-controller {
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <1>;
> - };
> };
> + };
>
> - pcie1: pcie@1,0 {
> - reg = <0x0800 0 0 0 0>;
> - #address-cells = <3>;
> - #size-cells = <2>;
> + pcie1: pcie@...45000 {
> + compatible = "mediatek,mt7622-pcie";
> + device_type = "pci";
> + reg = <0 0x1a145000 0 0x1000>;
> + reg-names = "port1";
> + linux,pci-domain = <1>;
> + #address-cells = <3>;
> + #size-cells = <2>;
> + interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>;
> + interrupt-names = "pcie_irq";
> + clocks = <&pciesys CLK_PCIE_P1_MAC_EN>,
> + /* designer has connect RC1 with p0_ahb clock */
> + <&pciesys CLK_PCIE_P0_AHB_EN>,
> + <&pciesys CLK_PCIE_P1_AUX_EN>,
> + <&pciesys CLK_PCIE_P1_AXI_EN>,
> + <&pciesys CLK_PCIE_P1_OBFF_EN>,
> + <&pciesys CLK_PCIE_P1_PIPE_EN>;
> + clock-names = "sys_ck1", "ahb_ck1", "aux_ck1",
> + "axi_ck1", "obff_ck1", "pipe_ck1";
> +
> + power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>;
> + bus-range = <0x00 0xff>;
> + ranges = <0x82000000 0 0x28000000 0x0 0x28000000 0 0x8000000>;
> + status = "disabled";
> +
> + #interrupt-cells = <1>;
> + interrupt-map-mask = <0 0 0 7>;
> + interrupt-map = <0 0 0 1 &pcie_intc1 0>,
> + <0 0 0 2 &pcie_intc1 1>,
> + <0 0 0 3 &pcie_intc1 2>,
> + <0 0 0 4 &pcie_intc1 3>;
> + pcie_intc1: interrupt-controller {
> + interrupt-controller;
> + #address-cells = <0>;
> #interrupt-cells = <1>;
> - ranges;
> - status = "disabled";
> -
> - interrupt-map-mask = <0 0 0 7>;
> - interrupt-map = <0 0 0 1 &pcie_intc1 0>,
> - <0 0 0 2 &pcie_intc1 1>,
> - <0 0 0 3 &pcie_intc1 2>,
> - <0 0 0 4 &pcie_intc1 3>;
> - pcie_intc1: interrupt-controller {
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <1>;
> - };
> };
> };
>
>
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