From: Hongtao Wu <[email protected]>
This series adds PCIe controller driver for Unisoc SoCs.
This controller is based on DesignWare PCIe IP.
Changes from v1:
1) Test this patch on top of Rob Herring's 40 part series of DWC clean-ups:
https://lore.kernel.org/linux-pci/[email protected]/
2) Delete empty function
3) Document property "sprd,pcie-poweron-syscons" and
'sprd,pcie-poweroff-syscons'
4) Delete runtime suspend/resume function
5) Add COMPILE_TEST which CONFIG_PCIE_SPRD depends on
Changes from v2:
1) Change RC mode to host mode in drivers/pci/controller/dwc/Kconfig
2) Change Signed-off-by from Billows Wu to Hongtao Wu
Changes from v3:
1) Split the property 'sprd,pcie-poweron-syscons' and
'sprd,pcie-poweroff-syscons' into reset, power domains, phy and so on.
2) Delete the function to get resource 'msi' and 'dbi' which were parsed by the
DW core.
3) Delete the function 'sprd_pcie_host_init', because the DW core has done it.
Changes from v4:
1) Install 'yamllint' and upgrade dt-schema in order to solve the yamllint and
dtschema/dtc warnings/errors.
Hongtao Wu (2):
dt-bindings: PCI: sprd: Document Unisoc PCIe RC host controller
PCI: sprd: Add support for Unisoc SoCs' PCIe controller
.../devicetree/bindings/pci/sprd-pcie.yaml | 93 +++++++
drivers/pci/controller/dwc/Kconfig | 12 +
drivers/pci/controller/dwc/Makefile | 1 +
drivers/pci/controller/dwc/pcie-sprd.c | 293 +++++++++++++++++++++
4 files changed, 399 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/sprd-pcie.yaml
create mode 100644 drivers/pci/controller/dwc/pcie-sprd.c
--
2.7.4
From: Hongtao Wu <[email protected]>
This series adds PCIe bindings for Unisoc SoCs.
This controller is based on DesignWare PCIe IP.
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Hongtao Wu <[email protected]>
---
.../devicetree/bindings/pci/sprd-pcie.yaml | 93 ++++++++++++++++++++++
1 file changed, 93 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/sprd-pcie.yaml
diff --git a/Documentation/devicetree/bindings/pci/sprd-pcie.yaml b/Documentation/devicetree/bindings/pci/sprd-pcie.yaml
new file mode 100644
index 0000000..ede06a8
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/sprd-pcie.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/sprd-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SoC PCIe Host Controller Device Tree Bindings
+
+maintainers:
+ - Hongtao Wu <[email protected]>
+
+allOf:
+ - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+ compatible:
+ items:
+ - const: sprd,ums9520-pcie
+
+ reg:
+ minItems: 2
+ items:
+ - description: Controller control and status registers.
+ - description: PCIe configuration registers.
+
+ reg-names:
+ items:
+ - const: dbi
+ - const: config
+
+ ranges:
+ maxItems: 2
+
+ num-lanes:
+ maximum: 1
+ description: Number of lanes to use for this port.
+
+ interrupts:
+ minItems: 1
+ description: Builtin MSI controller and PCIe host controller.
+
+ interrupt-names:
+ items:
+ - const: msi
+
+ sprd,regmap-aon:
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ description:
+ Phandle to the AON system controller node (to access the
+ AON_ACCESS_PCIE_EN register on ums9520).
+ sprd,regmap-pmu:
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ description:
+ Phandle to the PMU system controller node (to access the PERST_N_ASSERT
+ register on ums9520).
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - num-lanes
+ - ranges
+ - interrupts
+ - interrupt-names
+
+additionalProperties: true
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ ipa {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie0: pcie@2b100000 {
+ compatible = "sprd,ums9520-pcie";
+ reg = <0x0 0x2b100000 0x0 0x2000>,
+ <0x2 0x00000000 0x0 0x2000>;
+ reg-names = "dbi", "config";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ device_type = "pci";
+ ranges = <0x01000000 0x0 0x00000000 0x2 0x00002000 0x0 0x00010000>,
+ <0x03000000 0x0 0x10000000 0x2 0x10000000 0x1 0xefffffff>;
+ num-lanes = <1>;
+ interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "msi";
+
+ sprd,regmap-aon = <&aon_regs>;
+ sprd,regmap-pmu = <&pmu_regs>;
+ };
+ };
--
2.7.4