[PATCH 2/6] dt-bindings: PCI: Add PCIe controller bindings for FSD

From: Shradha Todi
Date: Mon Nov 21 2022 - 06:42:51 EST

Document the PCIe controller device tree bindings for
Tesla FSD SoC for both RC and EP

Signed-off-by: Shradha Todi <shradha.t@xxxxxxxxxxx>
---
.../bindings/pci/tesla,pcie-fsd-ep.yaml | 107 ++++++++++++++++
.../bindings/pci/tesla,pcie-fsd.yaml | 117 ++++++++++++++++++
2 files changed, 224 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/tesla,pcie-fsd-ep.yaml
create mode 100644 Documentation/devicetree/bindings/pci/tesla,pcie-fsd.yaml

diff --git a/Documentation/devicetree/bindings/pci/tesla,pcie-fsd-ep.yaml b/Documentation/devicetree/bindings/pci/tesla,pcie-fsd-ep.yaml
new file mode 100644
index 000000000000..07308cb9a35c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/tesla,pcie-fsd-ep.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/tesla,pcie-fsd-ep.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synopsys DesignWare based PCIe EP controller on FSD SoCs
+
+maintainers:
+ - Shradha Todi <shradha.t@xxxxxxxxxxx>
+
+description: |
+ FSD PCIe EP controller is based on Synopsys DesignWare PCIe IP
+ and thus inherits all the common properties defined in
+ snps,dw-pcie-ep.yaml. The controller instance is dual mode and
+ can work in Root port mode or Endpoint mode at a time.
+
+allOf:
+ - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
+
+properties:
+ compatible:
+ enum:
+ - tesla,fsd-pcie-ep
+
+ reg:
+ items:
+ - description: controller's application logic registers
+ - description: controller's own configuration registers
+ are available.
+ - description: controller's own configuration shadow registers
+ are available.
+ - description: Map the remote Root Complex slave address space
+
+ reg-names:
+ items:
+ - const: appl
+ - const: dbi
+ - const: dbi2
+ - const: addr_space
+
+ clocks:
+ items:
+ - description: Auxiliary clock for PCIe
+ - description: AHB clock for PCIe dbi
+ - description: AHB clock for PCIe master
+ - description: AHB clock for PCIe slave
+
+ clock-names:
+ items:
+ - const: aux_clk
+ - const: dbi_clk
+ - const: mstr_clk
+ - const: slv_clk
+
+ interrupts:
+ items:
+ - description: Controller interrupt
+
+ interrupt-names:
+ items:
+ - const: sub_ctrl_intr
+
+ tesla,pcie-sysreg:
+ $ref: '/schemas/types.yaml#/definitions/phandle-array'
+ description: phandle for system control registers, used to
+ control signals at system level
+
+required:
+
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - clock-names
+ - ranges
+ - num-lanes
+ - tesla,pcie-sysreg
+
+additionalProperties: true
+
+examples:
+ - |
+ #include <dt-bindings/clock/fsd-clk.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ pcie4_ep: pcie-ep@15400000 {
+ compatible = "tesla,fsd-pcie-ep";
+ clocks = <&clock_fsys0 PCIE_SUBCTRL_INST0_AUX_CLK_SOC>,
+ <&clock_fsys0 PCIE_SUBCTRL_INST0_DBI_ACLK_SOC>,
+ <&clock_fsys0 PCIE_SUBCTRL_INST0_MSTR_ACLK_SOC>,
+ <&clock_fsys0 PCIE_SUBCTRL_INST0_SLV_ACLK_SOC>;
+ clock-names = "aux_clk", "dbi_clk", "mstr_clk", "slv_clk";
+ interrupts = <GIC_SPI 93 IRQ_TYPE_EDGE_RISING>;
+ interrupt-names = "sub_ctrl_intr";
+ reg = <0x15090000 0x1000>,
+ <0x15400000 0x1000>,
+ <0x15401000 0x80>,
+ <0x15800000 0xFF0000>;
+ reg-names = "appl", "dbi", "dbi2", "addr_space";
+ num-lanes = <4>;
+ tesla,pcie-sysreg = <&sysreg_fsys0 0x434>;
+ phys = <&pcie_phy0>;
+ phy-names = "pcie_phy0";
+ status = "disabled";
+ };
+...
diff --git a/Documentation/devicetree/bindings/pci/tesla,pcie-fsd.yaml b/Documentation/devicetree/bindings/pci/tesla,pcie-fsd.yaml
new file mode 100644
index 000000000000..85648e5c7d27
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/tesla,pcie-fsd.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/pci/tesla,pcie-fsd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synopsys DesignWare based PCIe controller on FSD SoCs
+
+maintainers:
+ - Shradha Todi <shradha.t@xxxxxxxxxxx>
+
+description: |
+ FSD PCIe controller is based on Synopsys DesignWare PCIe IP
+ and thus inherits all the common properties defined in
+ designware-pcie.txt.
+
+allOf:
+ - $ref: /schemas/pci/snps,dw-pcie.yaml#
+
+properties:
+ compatible:
+ const: tesla,fsd-pcie
+
+ reg:
+ items:
+ - description: controller's application logic registers
+ - description: controller's own configuration registers
+ are available.
+ - description: configuration registers
+
+ reg-names:
+ items:
+ - const: appl
+ - const: dbi
+ - const: config
+
+ clocks:
+ items:
+ - description: Auxiliary clock for PCIe
+ - description: AHB clock for PCIe dbi
+ - description: AHB clock for PCIe master
+ - description: AHB clock for PCIe slave
+
+ clock-names:
+ items:
+ - const: aux_clk
+ - const: dbi_clk
+ - const: mstr_clk
+ - const: slv_clk
+
+ interrupts:
+ minItems: 1
+ items:
+ - description: MSI interrupt
+ - description: Controller interrupt
+
+ interrupt-names:
+ minItems: 1
+ items:
+ - const: msi
+ - const: sub_ctrl_intr
+
+ tesla,pcie-sysreg:
+ $ref: '/schemas/types.yaml#/definitions/phandle-array'
+ description: phandle for system control registers, used to
+ control signals at system level
+
+required:
+
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - clock-names
+ - ranges
+ - num-lanes
+ - tesla,pcie-sysreg
+
+additionalProperties: true
+
+examples:
+ - |
+ #include <dt-bindings/clock/fsd-clk.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ bus {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie4_rc: pcie@15400000 {
+ compatible = "tesla,fsd-pcie";
+ clocks = <&clock_fsys0 PCIE_SUBCTRL_INST0_AUX_CLK_SOC>,
+ <&clock_fsys0 PCIE_SUBCTRL_INST0_DBI_ACLK_SOC>,
+ <&clock_fsys0 PCIE_SUBCTRL_INST0_MSTR_ACLK_SOC>,
+ <&clock_fsys0 PCIE_SUBCTRL_INST0_SLV_ACLK_SOC>;
+ clock-names = "aux_clk", "dbi_clk", "mstr_clk", "slv_clk";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ dma-coherent;
+ interrupts = <GIC_SPI 93 IRQ_TYPE_EDGE_RISING>;
+ interrupt-names = "msi";
+ num-lanes = <4>;
+ reg = <0x0 0x15090000 0x0 0x1000>,
+ <0x0 0x15400000 0x0 0x1000>,
+ <0x0 0x15800000 0x0 0x1000>;
+ reg-names = "appl", "dbi", "config";
+ ranges = <0x82000000 0 0x15801000 0 0x15801000 0 0xffefff>;
+ tesla,pcie-sysreg = <&sysreg_fsys0 0x434>;
+ phys = <&pcie_phy0>;
+ phy-names = "pcie_phy0";
+ iommu-map = <0x0 &smmu_fsys0 0x4 0x10000>;
+ iommu-map-mask = <0x0>;
+ status = "disabled";
+ };
+ };
+...
--
2.17.1