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SubjectRe: [PATCH v3 1/2] dt-bindings: PCI: Add UniPhier PCIe endpoint controller description
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On 2020/03/23 18:40, Kunihiko Hayashi wrote:
> Add DT bindings for PCIe controller implemented in UniPhier SoCs
> when configured in endpoint mode. This controller is based on
> the DesignWare PCIe core.
>
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> .../devicetree/bindings/pci/uniphier-pcie-ep.txt | 53 ++++++++++++++++++++++
> MAINTAINERS | 2 +-
> 2 files changed, 54 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt
>
> diff --git a/Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt b/Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt
> new file mode 100644
> index 0000000..072dc78
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/uniphier-pcie-ep.txt
> @@ -0,0 +1,53 @@
> +Socionext UniPhier PCIe endpoint controller bindings
> +
> +This describes the devicetree bindings for PCIe endpoint controller
> +implemented on Socionext UniPhier SoCs.
> +
> +UniPhier PCIe endpoint controller is based on the Synopsys DesignWare
> +PCI core. It shares common functions with the PCIe DesignWare core driver
> +and inherits common properties defined in
> +Documentation/devicetree/bindings/pci/designware-pcie.txt.
> +
> +Required properties:
> +- compatible: Should be
> + "socionext,uniphier-pro5-pcie-ep" for Pro5 SoC
> +- reg: Specifies offset and length of the register set for the device.
> + According to the reg-names, appropriate register sets are required.
> +- reg-names: Must include the following entries:
> + "dbi" - controller configuration registers
> + "dbi2" - controller configuration registers for shadow
> + "link" - SoC-specific glue layer registers
> + "addr_space" - PCIe configuration space
> +- clocks: A phandle to the clock gate for PCIe glue layer including
> + the endpoint controller.
> +- clock-names: Should contain the following:
> + "gio", "link" - for Pro5 SoC
> +- resets: A phandle to the reset line for PCIe glue layer including
> + the endpoint controller.
> +- reset-names: Should contain the following:
> + "gio", "link" - for Pro5 SoC
> +
> +Optional properties:
> +- phys: A phandle to generic PCIe PHY. According to the phy-names, appropriate
> + phys are required.
> +- phy-names: Must be "pcie-phy".
> +
> +Example:
> +
> + pcie_ep: pcie-ep@66000000 {
> + compatible = "socionext,uniphier-pro5-pcie-ep",
> + "snps,dw-pcie-ep";
> + status = "disabled";
> + reg-names = "dbi", "dbi2", "link", "addr_space";
> + reg = <0x66000000 0x1000>, <0x66001000 0x1000>,
> + <0x66010000 0x10000>, <0x67000000 0x400000>;
> + clock-names = "gio", "link";
> + clocks = <&sys_clk 12>, <&sys_clk 24>;
> + reset-names = "gio", "link";
> + clocks = <&sys_rst 12>, <&sys_rst 24>;

This example contains a mistake. I'll fix it.

> + num-ib-windows = <16>;
> + num-ob-windows = <16>;
> + num-lanes = <4>;
> + phy-names = "pcie-phy";
> + phys = <&pcie_phy>;
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 50e8b90..01a4631 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -13151,7 +13151,7 @@ PCIE DRIVER FOR SOCIONEXT UNIPHIER
> M: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
> L: linux-pci@vger.kernel.org
> S: Maintained
> -F: Documentation/devicetree/bindings/pci/uniphier-pcie.txt
> +F: Documentation/devicetree/bindings/pci/uniphier-pcie*.txt
> F: drivers/pci/controller/dwc/pcie-uniphier.c
>
> PCIE DRIVER FOR ST SPEAR13XX
>

It is my chance to convert this to dt-schema.
I'll fix above and send dt-schema version in next.

Thank you,

---
Best Regards
Kunihiko Hayashi

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