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Date:   Tue, 21 Sep 2021 20:43:04 +0200
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Subject: Re: [PATCH v12 5/6] arm64: dts: mediatek: Split PCIe node for MT2712
 and MT7622
Content-Language: en-US
To:     Chuanjia Liu <chuanjia.liu@mediatek.com>, robh+dt@kernel.org,
        bhelgaas@google.com, lorenzo.pieralisi@arm.com
Cc:     ryder.lee@mediatek.com, jianjun.wang@mediatek.com,
        yong.wu@mediatek.com, linux-pci@vger.kernel.org,
        linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
References: <20210823032800.1660-1-chuanjia.liu@mediatek.com>
 <20210823032800.1660-6-chuanjia.liu@mediatek.com>
From:   Matthias Brugger <matthias.bgg@gmail.com>
In-Reply-To: <20210823032800.1660-6-chuanjia.liu@mediatek.com>
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Precedence: bulk


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@mediatek.com>
> Acked-by: Ryder Lee <ryder.lee@mediatek.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@11700000 {
> +	pcie1: pcie@112ff000 {
>   		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@11700000 {
> +		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@1a140000 {
> +	pciecfg: pciecfg@1a140000 {
> +		compatible = "mediatek,generic-pciecfg", "syscon";
> +		reg = <0 0x1a140000 0 0x1000>;
> +	};
> +
> +	pcie0: pcie@1a143000 {
>   		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@1a145000 {
> +		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>;
> -			};
>   		};
>   	};
>   
>