Re: [PATCH v5 11/11] riscv: dts: starfive: add PCIe dts configuration for JH7110

From: Rob Herring
Date: Thu Sep 07 2023 - 13:20:55 EST

On Thu, Sep 7, 2023 at 4:11 AM Minda Chen <minda.chen@xxxxxxxxxxxxxxxx> wrote:
>
> Add PCIe dts configuraion for JH7110 SoC platform.
>
> Signed-off-by: Minda Chen <minda.chen@xxxxxxxxxxxxxxxx>
> Reviewed-by: Hal Feng <hal.feng@xxxxxxxxxxxxxxxx>
> ---
> .../jh7110-starfive-visionfive-2.dtsi | 64 ++++++++++++++
> arch/riscv/boot/dts/starfive/jh7110.dtsi | 86 +++++++++++++++++++
> 2 files changed, 150 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> index de0f40a8be93..4dd61e2fec7d 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> @@ -15,6 +15,8 @@
> i2c2 = &i2c2;
> i2c5 = &i2c5;
> i2c6 = &i2c6;
> + pcie0 = &pcie0;
> + pcie1 = &pcie1;

That's not a defined alias. We already have "linux,pci-domain" if you
need to number PCI host bridges.

> serial0 = &uart0;
> };
>
> @@ -208,6 +210,54 @@
> };
> };
>
> + pcie0_pins: pcie0-0 {
> + wake-pins {
> + pinmux = <GPIOMUX(32, GPOUT_LOW,
> + GPOEN_DISABLE,
> + GPI_NONE)>;
> + bias-pull-up;
> + drive-strength = <2>;
> + input-enable;
> + input-schmitt-disable;
> + slew-rate = <0>;
> + };
> +
> + clkreq-pins {
> + pinmux = <GPIOMUX(27, GPOUT_LOW,
> + GPOEN_DISABLE,
> + GPI_NONE)>;
> + bias-pull-down;
> + drive-strength = <2>;
> + input-enable;
> + input-schmitt-disable;
> + slew-rate = <0>;
> + };
> + };
> +
> + pcie1_pins: pcie1-0 {
> + wake-pins {
> + pinmux = <GPIOMUX(21, GPOUT_LOW,
> + GPOEN_DISABLE,
> + GPI_NONE)>;
> + bias-pull-up;
> + drive-strength = <2>;
> + input-enable;
> + input-schmitt-disable;
> + slew-rate = <0>;
> + };
> +
> + clkreq-pins {
> + pinmux = <GPIOMUX(29, GPOUT_LOW,
> + GPOEN_DISABLE,
> + GPI_NONE)>;
> + bias-pull-down;
> + drive-strength = <2>;
> + input-enable;
> + input-schmitt-disable;
> + slew-rate = <0>;
> + };
> + };
> +
> uart0_pins: uart0-0 {
> tx-pins {
> pinmux = <GPIOMUX(5, GPOUT_SYS_UART0_TX,
> @@ -233,6 +283,20 @@
> };
> };
>
> +&pcie0 {
> + pinctrl-names = "default";
> + perst-gpios = <&sysgpio 26 GPIO_ACTIVE_LOW>;
> + pinctrl-0 = <&pcie0_pins>;
> + status = "okay";
> +};
> +
> +&pcie1 {
> + pinctrl-names = "default";
> + perst-gpios = <&sysgpio 28 GPIO_ACTIVE_LOW>;
> + pinctrl-0 = <&pcie1_pins>;
> + status = "okay";
> +};
> +
> &uart0 {
> pinctrl-names = "default";
> pinctrl-0 = <&uart0_pins>;
> diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> index 02354e642c44..7a5dc43cf63c 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> @@ -629,5 +629,91 @@
> #reset-cells = <1>;
> power-domains = <&pwrc JH7110_PD_VOUT>;
> };
> +
> + pcie0: pcie@940000000 {
> + compatible = "starfive,jh7110-pcie";
> + reg = <0x9 0x40000000 0x0 0x1000000>,
> + <0x0 0x2b000000 0x0 0x100000>;
> + reg-names = "cfg", "apb";
> + #address-cells = <3>;
> + #size-cells = <2>;
> + #interrupt-cells = <1>;
> + ranges = <0x82000000 0x0 0x30000000 0x0 0x30000000 0x0 0x08000000>,
> + <0xc3000000 0x9 0x00000000 0x9 0x00000000 0x0 0x40000000>;
> + interrupts = <56>;
> + interrupt-parent = <&plic>;
> + interrupt-map-mask = <0x0 0x0 0x0 0x7>;
> + interrupt-map = <0x0 0x0 0x0 0x1 &pcie_intc0 0x1>,
> + <0x0 0x0 0x0 0x2 &pcie_intc0 0x2>,
> + <0x0 0x0 0x0 0x3 &pcie_intc0 0x3>,
> + <0x0 0x0 0x0 0x4 &pcie_intc0 0x4>;
> + msi-controller;
> + device_type = "pci";
> + starfive,stg-syscon = <&stg_syscon>;
> + bus-range = <0x0 0xff>;
> + clocks = <&syscrg JH7110_SYSCLK_NOC_BUS_STG_AXI>,
> + <&stgcrg JH7110_STGCLK_PCIE0_TL>,
> + <&stgcrg JH7110_STGCLK_PCIE0_AXI_MST0>,
> + <&stgcrg JH7110_STGCLK_PCIE0_APB>;
> + clock-names = "noc", "tl", "axi_mst0", "apb";
> + resets = <&stgcrg JH7110_STGRST_PCIE0_AXI_MST0>,
> + <&stgcrg JH7110_STGRST_PCIE0_AXI_SLV0>,
> + <&stgcrg JH7110_STGRST_PCIE0_AXI_SLV>,
> + <&stgcrg JH7110_STGRST_PCIE0_BRG>,
> + <&stgcrg JH7110_STGRST_PCIE0_CORE>,
> + <&stgcrg JH7110_STGRST_PCIE0_APB>;
> + reset-names = "mst0", "slv0", "slv", "brg",
> + "core", "apb";
> + status = "disabled";
> +
> + pcie_intc0: interrupt-controller {
> + #address-cells = <0>;
> + #interrupt-cells = <1>;
> + interrupt-controller;
> + };
> + };
> +
> + pcie1: pcie@9c0000000 {
> + compatible = "starfive,jh7110-pcie";
> + reg = <0x9 0xc0000000 0x0 0x1000000>,
> + <0x0 0x2c000000 0x0 0x100000>;
> + reg-names = "cfg", "apb";
> + #address-cells = <3>;
> + #size-cells = <2>;
> + #interrupt-cells = <1>;
> + ranges = <0x82000000 0x0 0x38000000 0x0 0x38000000 0x0 0x08000000>,
> + <0xc3000000 0x9 0x80000000 0x9 0x80000000 0x0 0x40000000>;
> + interrupts = <57>;
> + interrupt-parent = <&plic>;
> + interrupt-map-mask = <0x0 0x0 0x0 0x7>;
> + interrupt-map = <0x0 0x0 0x0 0x1 &pcie_intc1 0x1>,
> + <0x0 0x0 0x0 0x2 &pcie_intc1 0x2>,
> + <0x0 0x0 0x0 0x3 &pcie_intc1 0x3>,
> + <0x0 0x0 0x0 0x4 &pcie_intc1 0x4>;
> + msi-controller;
> + device_type = "pci";
> + starfive,stg-syscon = <&stg_syscon>;
> + bus-range = <0x0 0xff>;
> + clocks = <&syscrg JH7110_SYSCLK_NOC_BUS_STG_AXI>,
> + <&stgcrg JH7110_STGCLK_PCIE1_TL>,
> + <&stgcrg JH7110_STGCLK_PCIE1_AXI_MST0>,
> + <&stgcrg JH7110_STGCLK_PCIE1_APB>;
> + clock-names = "noc", "tl", "axi_mst0", "apb";
> + resets = <&stgcrg JH7110_STGRST_PCIE1_AXI_MST0>,
> + <&stgcrg JH7110_STGRST_PCIE1_AXI_SLV0>,
> + <&stgcrg JH7110_STGRST_PCIE1_AXI_SLV>,
> + <&stgcrg JH7110_STGRST_PCIE1_BRG>,
> + <&stgcrg JH7110_STGRST_PCIE1_CORE>,
> + <&stgcrg JH7110_STGRST_PCIE1_APB>;
> + reset-names = "mst0", "slv0", "slv", "brg",
> + "core", "apb";
> + status = "disabled";
> +
> + pcie_intc1: interrupt-controller {
> + #address-cells = <0>;
> + #interrupt-cells = <1>;
> + interrupt-controller;
> + };
> + };
> };
> };
> --
> 2.17.1
>