Document DT bindings for PCIe Endpoint controller found in Rockchip SoCs.
Signed-off-by: Niklas Cassel <cassel@xxxxxxxxxx>
---
.../bindings/pci/rockchip-dw-pcie-common.yaml | 14 ++++
.../bindings/pci/rockchip-dw-pcie-ep.yaml | 95 ++++++++++++++++++++++
2 files changed, 109 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
index ec5e6a3d048e..cc9adfc7611c 100644
--- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
@@ -39,6 +39,7 @@ properties:
- const: ref
interrupts:
+ minItems: 5
items:
- description:
Combined system interrupt, which is used to signal the following
@@ -63,14 +64,27 @@ properties:
interrupts - aer_rc_err, aer_rc_err_msi, rx_cpl_timeout,
tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
nf_err_rx, f_err_rx, radm_qoverflow
+ - description:
+ eDMA write channel 0 interrupt
+ - description:
+ eDMA write channel 1 interrupt
+ - description:
+ eDMA read channel 0 interrupt
+ - description:
+ eDMA read channel 1 interrupt
interrupt-names:
+ minItems: 5
items:
- const: sys
- const: pmc
- const: msg
- const: legacy
- const: err
+ - const: dma0
+ - const: dma1
+ - const: dma2
+ - const: dma3
num-lanes: true
diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml
new file mode 100644
index 000000000000..e0c8668afc01
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/rockchip-dw-pcie-ep.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DesignWare based PCIe Endpoint controller on Rockchip SoCs
+
+maintainers:
+ - Niklas Cassel <cassel@xxxxxxxxxx>
+
+description: |+
+ RK3588 SoC PCIe Endpoint controller is based on the Synopsys DesignWare
+ PCIe IP and thus inherits all the common properties defined in
+ snps,dw-pcie-ep.yaml.
+
+allOf:
+ - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
+ - $ref: /schemas/pci/rockchip-dw-pcie-common.yaml#
+
+properties:
+ compatible:
+ enum:
+ - rockchip,rk3568-pcie-ep
+ - rockchip,rk3588-pcie-ep
+
+ reg:
+ items:
+ - description: Data Bus Interface (DBI) registers
+ - description: Data Bus Interface (DBI) shadow registers
+ - description: Rockchip designed configuration registers
+ - description: Memory region used to map remote RC address space
+ - description: Address Translation Unit (ATU) registers
+
+ reg-names:
+ items:
+ - const: dbi
+ - const: dbi2
+ - const: apb
+ - const: addr_space
+ - const: atu
+
+required:
+ - interrupts
+ - interrupt-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/rockchip,rk3588-cru.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/power/rk3588-power.h>
+ #include <dt-bindings/reset/rockchip,rk3588-cru.h>
+
+ bus {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie3x4_ep: pcie-ep@fe150000 {
+ compatible = "rockchip,rk3588-pcie-ep";
+ clocks = <&cru ACLK_PCIE_4L_MSTR>, <&cru ACLK_PCIE_4L_SLV>,
+ <&cru ACLK_PCIE_4L_DBI>, <&cru PCLK_PCIE_4L>,
+ <&cru CLK_PCIE_AUX0>, <&cru CLK_PCIE4L_PIPE>;
+ clock-names = "aclk_mst", "aclk_slv",
+ "aclk_dbi", "pclk",
+ "aux", "pipe";
+ interrupts = <GIC_SPI 263 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 262 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 261 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 260 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 259 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH 0>;
+ interrupt-names = "sys", "pmc", "msg", "legacy", "err",
+ "dma0", "dma1", "dma2", "dma3";
+ max-link-speed = <3>;
+ num-lanes = <4>;
+ phys = <&pcie30phy>;
+ phy-names = "pcie-phy";
+ power-domains = <&power RK3588_PD_PCIE>;
+ reg = <0xa 0x40000000 0x0 0x00100000>,
+ <0xa 0x40100000 0x0 0x00100000>,
+ <0x0 0xfe150000 0x0 0x00010000>,
+ <0x9 0x00000000 0x0 0x40000000>,
+ <0xa 0x40300000 0x0 0x00100000>;
+ reg-names = "dbi", "dbi2", "apb", "addr_space", "atu";
+ resets = <&cru SRST_PCIE0_POWER_UP>, <&cru SRST_P_PCIE0>;
+ reset-names = "pwr", "pipe";
+ };
+ };
+...
--
2.44.0
