[PATCH 2/9] dt-bindings: PCI: qcom: Document the Shikra PCIe Controller

[Sushrut Shree Trivedi <sushrut.trivedi@oss.qualcomm.com>]

Add a dedicated schema for the PCIe controller found on the Shikra
platform.

Signed-off-by: Sushrut Shree Trivedi <sushrut.trivedi@oss.qualcomm.com>
---
 .../devicetree/bindings/pci/qcom,shikra-pcie.yaml  | 211 +++++++++++++++++++++
 1 file changed, 211 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/qcom,shikra-pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,shikra-pcie.yaml
new file mode 100644
index 000000000000..f9d1dba9dd2e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,shikra-pcie.yaml
@@ -0,0 +1,211 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/qcom,shikra-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Shikra PCI Express Root Complex
+
+maintainers:
+  - Bjorn Andersson <andersson@kernel.org>
+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+description:
+  Qualcomm Shikra SoC (and compatible) PCIe root complex controller is based on
+  the Synopsys DesignWare PCIe IP.
+
+properties:
+  compatible:
+    const: qcom,shikra-pcie
+
+  reg:
+    minItems: 5
+    maxItems: 6
+
+  reg-names:
+    minItems: 5
+    items:
+      - const: parf # Qualcomm specific registers
+      - const: dbi # DesignWare PCIe registers
+      - const: elbi # External local bus interface registers
+      - const: atu # ATU address space
+      - const: config # PCIe configuration space
+      - const: mhi # MHI registers
+
+  clocks:
+    minItems: 7
+    maxItems: 9
+
+  clock-names:
+    minItems: 7
+    items:
+      - const: aux # Auxiliary clock
+      - const: cfg # Configuration clock
+      - const: bus_master # Master AXI clock
+      - const: bus_slave # Slave AXI clock
+      - const: slave_q2a # Slave Q2A clock
+      - const: ddrss_memnoc_pcie # PCIe SF MEMNOC clock
+      - const: tile # PCIe tile SYS NoC clock
+      - const: qmip_pcie_ahb # QMIP PCIe AHB clock
+
+  interrupts:
+    minItems: 8
+    maxItems: 9
+
+  interrupt-names:
+    minItems: 8
+    items:
+      - const: msi0
+      - const: msi1
+      - const: msi2
+      - const: msi3
+      - const: msi4
+      - const: msi5
+      - const: msi6
+      - const: msi7
+      - const: global
+
+  resets:
+    minItems: 1
+    maxItems: 2
+
+  reset-names:
+    minItems: 1
+    items:
+      - const: pci # PCIe core reset
+      - const: link_down # PCIe link down reset
+
+required:
+  - power-domains
+  - resets
+  - reset-names
+
+allOf:
+  - $ref: qcom,pcie-common.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,dispcc-qcm2290.h>
+    #include <dt-bindings/clock/qcom,qcm2290-gpucc.h>
+    #include <dt-bindings/clock/qcom,rpmcc.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pcie@45e8000 {
+          device_type = "pci";
+          compatible = "qcom,shikra-pcie";
+          reg = <0x0 0x045e8000 0x0 0x3000>,
+                <0x0 0x60000000 0x0 0xf1d>,
+                <0x0 0x60000f20 0x0 0xa8>,
+                <0x0 0x60001000 0x0 0x1000>,
+                <0x0 0x60100000 0x0 0x100000>,
+                <0x0 0x045eb000 0x0 0x1000>;
+          reg-names = "parf",
+                      "dbi",
+                      "elbi",
+                      "atu",
+                      "config",
+                      "mhi";
+          #address-cells = <3>;
+          #size-cells = <2>;
+          ranges = <0x01000000 0x0 0x00000000 0x0 0x60200000 0x0 0x100000>,
+                   <0x02000000 0x0 0x60300000 0x0 0x60300000 0x0 0x3d00000>,
+                   <0x03000000 0x4 0x00000000 0x4 0x00000000 0x3 0x0000000>;
+          bus-range = <0x00 0xff>;
+
+          linux,pci-domain = <0>;
+          num-lanes = <1>;
+
+          interrupts = <GIC_SPI 491 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 492 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 493 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 494 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 495 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 496 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 497 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 498 IRQ_TYPE_LEVEL_HIGH 0>,
+                       <GIC_SPI 489 IRQ_TYPE_LEVEL_HIGH 0>;
+          interrupt-names = "msi0",
+                            "msi1",
+                            "msi2",
+                            "msi3",
+                            "msi4",
+                            "msi5",
+                            "msi6",
+                            "msi7",
+                            "global";
+
+          interrupt-map = <0 0 0 1 &intc 0 0 0 499 IRQ_TYPE_LEVEL_HIGH>,
+                          <0 0 0 2 &intc 0 0 0 500 IRQ_TYPE_LEVEL_HIGH>,
+                          <0 0 0 3 &intc 0 0 0 501 IRQ_TYPE_LEVEL_HIGH>,
+                          <0 0 0 4 &intc 0 0 0 502 IRQ_TYPE_LEVEL_HIGH>;
+          interrupt-map-mask = <0 0 0 0x7>;
+          #interrupt-cells = <1>;
+
+          clocks = <&gcc GCC_PCIE_AUX_CLK>,
+                   <&gcc GCC_PCIE_CFG_AHB_CLK>,
+                   <&gcc GCC_PCIE_MSTR_AXI_CLK>,
+                   <&gcc GCC_PCIE_SLV_AXI_CLK>,
+                   <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
+                   <&gcc GCC_DDRSS_MEMNOC_PCIE_SF_CLK>,
+                   <&gcc GCC_PCIE_TILE_AXI_SYS_NOC_CLK>,
+                   <&gcc GCC_QMIP_PCIE_CFG_AHB_CLK>;
+          clock-names = "aux",
+                        "cfg",
+                        "bus_master",
+                        "bus_slave",
+                        "slave_q2a",
+                        "ddrss_memnoc_pcie",
+                        "tile",
+                        "qmip_pcie_ahb";
+
+          assigned-clocks = <&gcc GCC_PCIE_AUX_CLK>;
+          assigned-clock-rates = <19200000>;
+
+          interconnects = <&system_noc MASTER_PCIE2_0 RPM_ALWAYS_TAG
+                          &mc_virt SLAVE_EBI_CH0 RPM_ALWAYS_TAG>,
+                          <&mem_noc MASTER_AMPSS_M0 RPM_ACTIVE_TAG
+                          &config_noc SLAVE_PCIE2_0 RPM_ACTIVE_TAG>;
+
+          interconnect-names = "pcie-mem",
+                               "cpu-pcie";
+
+          iommu-map = <0x0 &apps_smmu 0x800 0x1>,
+                      <0x100 &apps_smmu 0x801 0x1>;
+
+          resets = <&gcc GCC_PCIE_BCR>;
+          reset-names = "pci";
+
+          power-domains = <&gcc GCC_PCIE_GDSC>;
+
+          max-link-speed = <2>;
+
+          operating-points-v2 = <&pcie_opp_table>;
+
+          status = "disabled";
+
+          pcie_opp_table: opp-table {
+                  compatible = "operating-points-v2";
+
+                  /* GEN 1 x1 */
+                  opp-2500000 {
+                          opp-hz = /bits/ 64 <2500000>;
+                          required-opps = <&rpmpd_opp_nom>;
+                          opp-peak-kBps = <250000 1>;
+                          opp-level = <1>;
+                  };
+
+                  /* GEN 2 x1 */
+                  opp-5000000 {
+                          opp-hz = /bits/ 64 <5000000>;
+                          required-opps = <&rpmpd_opp_nom>;
+                          opp-peak-kBps = <500000 1>;
+                          opp-level = <2>;
+                  };
+          };
+        };
+    };

-- 
2.43.0