[PATCH v2 3/5] dt-bindings: PCI: Add STM32MP25 PCIe endpoint bindings

Christian Bruel
2024-11-26T15:55:27Z

STM32MP25 PCIe Controller is based on the DesignWare core configured as
end point mode from the SYSCFG register.

Signed-off-by: Christian Bruel <christian.bruel@foss.st.com>
---
.../bindings/pci/st,stm32-pcie-ep.yaml | 61 +++++++++++++++++++
1 file changed, 61 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/st,stm32-pcie-ep.yaml

diff --git a/Documentation/devicetree/bindings/pci/st,stm32-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/st,stm32-pcie-ep.yaml
new file mode 100644
index 000000000000..0da3ee012ba8
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/st,stm32-pcie-ep.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/st,stm32-pcie-ep.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STM32MP25 PCIe endpoint driver
+
+maintainers:
+ - Christian Bruel <christian.bruel@foss.st.com>
+
+description:
+ PCIe endpoint controller based on the Synopsys DesignWare PCIe core.
+
+allOf:
+ - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
+ - $ref: /schemas/pci/st,stm32-pcie-common.yaml#
+
+properties:
+ compatible:
+ const: st,stm32mp25-pcie-ep
+
+ reg:
+ items:
+ - description: Data Bus Interface (DBI) registers.
+ - description: PCIe configuration registers.
+
+ reg-names:
+ items:
+ - const: dbi
+ - const: addr_space
+
+required:
+ - reset-gpios
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/st,stm32mp25-rcc.h>
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/phy/phy.h>
+ #include <dt-bindings/reset/st,stm32mp25-rcc.h>
+
+ pcie-ep@48400000 {
+ compatible = "st,stm32mp25-pcie-ep";
+ num-lanes = <1>;
+ reg = <0x48400000 0x400000>,
+ <0x10000000 0x8000000>;
+ reg-names = "dbi", "addr_space";
+ clocks = <&rcc CK_BUS_PCIE>;
+ phys = <&combophy PHY_TYPE_PCIE>;
+ phy-names = "pcie-phy";
+ resets = <&rcc PCIE_R>;
+ pinctrl-names = "default", "init";
+ pinctrl-0 = <&pcie_pins_a>;
+ pinctrl-1 = <&pcie_init_pins_a>;
+ reset-gpios = <&gpioj 8 GPIO_ACTIVE_LOW>;
+ access-controllers = <&rifsc 68>;
+ power-domains = <&CLUSTER_PD>;
+ };
--
2.34.1