[v4,1/8] dt-bindings: phy: Add bindings for HiKey 960 PCIe PHY

Commit Message

Mauro Carvalho Chehab July 12, 2021, 9:46 p.m. UTC

Document the bindings for HiKey 960 (hi3660) PCIe PHY
interface, supported via the pcie-kirin driver.

Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
---
 .../phy/hisilicon,phy-hi3660-pcie.yaml        | 82 +++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/hisilicon,phy-hi3660-pcie.yaml

Patch

diff --git a/Documentation/devicetree/bindings/phy/hisilicon,phy-hi3660-pcie.yaml b/Documentation/devicetree/bindings/phy/hisilicon,phy-hi3660-pcie.yaml
new file mode 100644
index 000000000000..81c93e76cef4
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/hisilicon,phy-hi3660-pcie.yaml
@@ -0,0 +1,82 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/hisilicon,phy-hi3660-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiSilicon Kirin960 PCIe PHY
+
+maintainers:
+  - Mauro Carvalho Chehab <[e-mail]>
+
+description: |+
+  Bindings for PCIe PHY on HiSilicon Kirin 960.
+
+properties:
+  compatible:
+    const: hisilicon,hi960-pcie-phy
+
+  "#phy-cells":
+    const: 0
+
+  reg:
+    maxItems: 1
+    description: PHY Control registers
+
+  reg-names:
+    const: phy
+
+  clocks:
+    items:
+      - description: PCIe PHY clock
+      - description: PCIe AUX clock
+      - description: PCIe APB PHY clock
+      - description: PCIe APB SYS clock
+      - description: PCIe ACLK clock
+
+  clock-names:
+    items:
+      - const: pcie_phy_ref
+      - const: pcie_aux
+      - const: pcie_apb_phy
+      - const: pcie_apb_sys
+      - const: pcie_aclk
+
+  reset-gpios:
+    description: PCI PERST reset GPIO
+
+required:
+  - "#phy-cells"
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - reset-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/hi3660-clock.h>
+
+    bus {
+      #address-cells = <2>;
+      #size-cells = <2>;
+      pcie_phy: pcie-phy@f3f2000 {
+        compatible = "hisilicon,hi960-pcie-phy";
+        reg = <0x0 0xf3f20000 0x0 0x40000>;
+        reg-names = "phy";
+        clocks = <&crg_ctrl HI3660_PCIEPHY_REF>,
+                 <&crg_ctrl HI3660_CLK_GATE_PCIEAUX>,
+                 <&crg_ctrl HI3660_PCLK_GATE_PCIE_PHY>,
+                 <&crg_ctrl HI3660_PCLK_GATE_PCIE_SYS>,
+                 <&crg_ctrl HI3660_ACLK_GATE_PCIE>;
+        clock-names = "pcie_phy_ref", "pcie_aux",
+                 "pcie_apb_phy", "pcie_apb_sys",
+                 "pcie_aclk";
+        reset-gpios = <&gpio11 1 0 >;
+        #phy-cells = <0>;
+      };
+    };
+...