[PATCH 1/3] dt-bindings: PCI: qcom,pcie-sc8180x: move SC8180X to dedicated schema

Krzysztof Kozlowski
2024-02-05T15:58:14Z

Move SC8180X PCIe devices from qcom,pcie.yaml binding to a dedicated file
to make reviewing easier.

This creates equivalent schema file, except:
- Missing required compatible which is actually redundant.
- Expecting eight MSI interrupts, instead of only one, which was
incomplete hardware description.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
.../devicetree/bindings/pci/qcom,pcie-sc8180x.yaml | 170 +++++++++++++++++++++
.../devicetree/bindings/pci/qcom,pcie.yaml | 30 ----
2 files changed, 170 insertions(+), 30 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-sc8180x.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-sc8180x.yaml
new file mode 100644
index 000000000000..baf1813ec0ac
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-sc8180x.yaml
@@ -0,0 +1,170 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/qcom,pcie-sc8180x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm SC8180x PCI Express Root Complex
+
+maintainers:
+ - Bjorn Andersson <andersson@kernel.org>
+ - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+
+description:
+ Qualcomm SC8180x SoC PCIe root complex controller is based on the Synopsys
+ DesignWare PCIe IP.
+
+properties:
+ compatible:
+ const: qcom,pcie-sc8180x
+
+ 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: 8
+ maxItems: 8
+
+ clock-names:
+ items:
+ - const: pipe # PIPE clock
+ - 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: ref # REFERENCE clock
+ - const: tbu # PCIe TBU clock
+
+ interrupts:
+ minItems: 8
+ maxItems: 8
+
+ interrupt-names:
+ items:
+ - const: msi0
+ - const: msi1
+ - const: msi2
+ - const: msi3
+ - const: msi4
+ - const: msi5
+ - const: msi6
+ - const: msi7
+
+ resets:
+ maxItems: 1
+
+ reset-names:
+ items:
+ - const: pci
+
+allOf:
+ - $ref: qcom,pcie-common.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-sc8180x.h>
+ #include <dt-bindings/interconnect/qcom,sc8180x.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie@1c00000 {
+ compatible = "qcom,pcie-sc8180x";
+ reg = <0 0x01c00000 0 0x3000>,
+ <0 0x60000000 0 0xf1d>,
+ <0 0x60000f20 0 0xa8>,
+ <0 0x60001000 0 0x1000>,
+ <0 0x60100000 0 0x100000>;
+ reg-names = "parf",
+ "dbi",
+ "elbi",
+ "atu",
+ "config";
+ ranges = <0x01000000 0x0 0x60200000 0x0 0x60200000 0x0 0x100000>,
+ <0x02000000 0x0 0x60300000 0x0 0x60300000 0x0 0x3d00000>;
+
+ bus-range = <0x00 0xff>;
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ num-lanes = <2>;
+
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ assigned-clocks = <&gcc GCC_PCIE_0_AUX_CLK>;
+ assigned-clock-rates = <19200000>;
+
+ clocks = <&gcc GCC_PCIE_0_PIPE_CLK>,
+ <&gcc GCC_PCIE_0_AUX_CLK>,
+ <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
+ <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
+ <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
+ <&gcc GCC_PCIE_0_SLV_Q2A_AXI_CLK>,
+ <&gcc GCC_PCIE_0_CLKREF_CLK>,
+ <&gcc GCC_AGGRE_NOC_PCIE_TBU_CLK>;
+ clock-names = "pipe",
+ "aux",
+ "cfg",
+ "bus_master",
+ "bus_slave",
+ "slave_q2a",
+ "ref",
+ "tbu";
+
+ dma-coherent;
+
+ interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "msi0",
+ "msi1",
+ "msi2",
+ "msi3",
+ "msi4",
+ "msi5",
+ "msi6",
+ "msi7";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 149 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 150 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 151 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 152 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+ interconnects = <&aggre2_noc MASTER_PCIE 0 &mc_virt SLAVE_EBI_CH0 0>,
+ <&gem_noc MASTER_AMPSS_M0 0 &config_noc SLAVE_PCIE_0 0>;
+ interconnect-names = "pcie-mem", "cpu-pcie";
+
+ iommu-map = <0x0 &apps_smmu 0x1d80 0x1>,
+ <0x100 &apps_smmu 0x1d81 0x1>;
+
+ phys = <&pcie0_phy>;
+ phy-names = "pciephy";
+
+ power-domains = <&gcc PCIE_0_GDSC>;
+
+ resets = <&gcc GCC_PCIE_0_BCR>;
+ reset-names = "pci";
+ };
+ };
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
index c8f36978a94c..9bfd35aa1df1 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -30,7 +30,6 @@ properties:
- qcom,pcie-qcs404
- qcom,pcie-sa8775p
- qcom,pcie-sc7280
- - qcom,pcie-sc8180x
- qcom,pcie-sdm845
- qcom,pcie-sdx55
- items:
@@ -207,7 +206,6 @@ allOf:
enum:
- qcom,pcie-sa8775p
- qcom,pcie-sc7280
- - qcom,pcie-sc8180x
- qcom,pcie-sdx55
then:
properties:
@@ -465,33 +463,6 @@ allOf:
items:
- const: pci # PCIe core reset

- - if:
- properties:
- compatible:
- contains:
- enum:
- - qcom,pcie-sc8180x
- then:
- properties:
- clocks:
- minItems: 8
- maxItems: 8
- clock-names:
- items:
- - const: pipe # PIPE clock
- - 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: ref # REFERENCE clock
- - const: tbu # PCIe TBU clock
- resets:
- maxItems: 1
- reset-names:
- items:
- - const: pci # PCIe core reset
-
- if:
properties:
compatible:
@@ -633,7 +604,6 @@ allOf:
- qcom,pcie-msm8996
- qcom,pcie-sa8775p
- qcom,pcie-sc7280
- - qcom,pcie-sc8180x