[PATCH 2/5] dt-bindings: phy: Add ARTPEC-8 PCIe phy

[이왕석]

Add description to support Axis, ARTPEC-8 SoC.
ARTPEC-8 is the SoC platform of Axis Communications
and PCIe phy is designed based on SAMSUNG PHY.

Signed-off-by: Wangseok Lee <wangseok.lee at samsung.com>
---
 .../bindings/phy/axis,artpec8-pcie-phy.yaml        | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/axis,artpec8-pcie-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/axis,artpec8-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/axis,artpec8-pcie-phy.yaml
new file mode 100644
index 0000000..f5f4166
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/axis,artpec8-pcie-phy.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/axis,artpec8-pcie-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARTPEC-8 SoC PCIe PHY Device Tree Bindings
+
+maintainers:
+  - Jesper Nilsson <jesper.nilsson at axis.com>
+
+properties:
+  compatible:
+    const: axis,artpec8-pcie-phy
+
+  reg:
+    items:
+      - description: PHY registers.
+      - description: PHY coding sublayer registers.
+
+  reg-names:
+    items:
+      - const: phy
+      - const: pcs
+
+  clocks:
+    items:
+      - description: PCIe PHY reference clock
+
+  clock-names:
+    items:
+      - const: ref_clk
+
+required:
+  - compatible
+  - "#phy-cells"
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - samsung,fsys-sysreg
+  - num-lanes
+
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    artec8 {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        pcie_phy: pcie-phy at 16c80000 {
+            compatible = "samsung,artpec8-pcie-phy";
+            #phy-cells = <0>;
+            reg = <0x0 0x16c80000 0x0 0x2000>,
+                    <0x0 0x16c90000 0x0 0x1000>;
+            reg-names = "phy", "pcs";
+            clocks = <&clock_cmu_fsys 53>;
+            clock-names = "ref_clk";
+            samsung,fsys-sysreg = <&syscon_fsys>;
+            num-lanes = <2>;
+        };
+    };
+...
-- 
2.9.5