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Message-ID: <CAJM55Z8ES9ip53R14OoKVphEr14BFOwk88DCZEp13oGrnPkdvg@mail.gmail.com>
Date: Sun, 17 Sep 2023 15:20:23 -0700
From: Emil Renner Berthing <emil.renner.berthing@...onical.com>
To: Minda Chen <minda.chen@...rfivetech.com>,
Daire McNamara <daire.mcnamara@...rochip.com>,
Conor Dooley <conor@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof Wilczyński <kw@...ux.com>,
Emil Renner Berthing <emil.renner.berthing@...onical.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-riscv@...ts.infradead.org, linux-pci@...r.kernel.org,
Pali Rohár <pali@...nel.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Philipp Zabel <p.zabel@...gutronix.de>,
Mason Huo <mason.huo@...rfivetech.com>,
Leyfoon Tan <leyfoon.tan@...rfivetech.com>,
Kevin Xie <kevin.xie@...rfivetech.com>
Subject: Re: [PATCH v6 19/19] riscv: dts: starfive: add PCIe dts configuration
for JH7110
Minda Chen wrote:
> Add PCIe dts configuraion for JH7110 SoC platform.
>
> Signed-off-by: Minda Chen <minda.chen@...rfivetech.com>
> Reviewed-by: Hal Feng <hal.feng@...rfivetech.com>
> Signed-off-by: Minda Chen <minda.chen@...rfivetech.com>
> ---
> .../jh7110-starfive-visionfive-2.dtsi | 63 +++++++++++++
> arch/riscv/boot/dts/starfive/jh7110.dtsi | 88 +++++++++++++++++++
> 2 files changed, 151 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 d79f94432b27..8c84852f1c06 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> @@ -402,6 +402,53 @@
> };
> };
>
> + 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>;
> + };
> + };
> +
> spi0_pins: spi0-0 {
> mosi-pins {
> pinmux = <GPIOMUX(52, GPOUT_SYS_SPI0_TXD,
> @@ -499,6 +546,22 @@
> };
> };
>
> +&pcie0 {
> + pinctrl-names = "default";
> + perst-gpios = <&sysgpio 26 GPIO_ACTIVE_LOW>;
> + pinctrl-0 = <&pcie0_pins>;
> + phys = <&pciephy0>;
> + status = "okay";
> +};
> +
> +&pcie1 {
> + pinctrl-names = "default";
> + perst-gpios = <&sysgpio 28 GPIO_ACTIVE_LOW>;
> + pinctrl-0 = <&pcie1_pins>;
> + phys = <&pciephy1>;
> + status = "okay";
> +};
These nodes are out of place. The order is
- root node
- clocks sorted alphabetically
- other node references sorted alphabetically
> &tdm {
> pinctrl-names = "default";
> pinctrl-0 = <&tdm_pins>;
> diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> index e85464c328d0..97fe5a242d60 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> @@ -1045,5 +1045,93 @@
> #reset-cells = <1>;
> power-domains = <&pwrc JH7110_PD_VOUT>;
> };
> +
> + pcie0: pcie@...000000 {
> + compatible = "starfive,jh7110-pcie";
> + reg = <0x9 0x40000000 0x0 0x1000000>,
> + <0x0 0x2b000000 0x0 0x100000>;
> + reg-names = "cfg", "apb";
> + linux,pci-domain = <0>;
> + #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>;
Is interrupt-parent not inherited from the soc bus like other peripherals?
> + 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@...000000 {
> + compatible = "starfive,jh7110-pcie";
> + reg = <0x9 0xc0000000 0x0 0x1000000>,
> + <0x0 0x2c000000 0x0 0x100000>;
> + reg-names = "cfg", "apb";
> + linux,pci-domain = <1>;
> + #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>;
ditto.
> + 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
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