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Subject[RFC v3 1/5] dt-bindings: phy: rockchip: add PCIe v3 phy
Date
From: Frank Wunderlich <frank-w@public-files.de>

Add a new binding file for Rockchip PCIe v3 phy driver.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>

---
v3:
- drop quotes
- drop rk3588
- make clockcount fixed to 3
- full path for binding header file
- drop phy-mode and its header and add lane-map

v2:
dt-bindings: rename yaml for PCIe v3
rockchip-pcie3-phy.yaml => rockchip,pcie3-phy.yaml

changes in pcie3 phy yaml
- change clock names to ordered const list
- extend pcie30-phymode description
- add phy-cells to required properties
- drop unevaluatedProperties
- example with 1 clock each line
- use default property instead of text describing it
- update license
---
.../bindings/phy/rockchip,pcie3-phy.yaml | 82 +++++++++++++++++++
1 file changed, 82 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml b/Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml
new file mode 100644
index 000000000000..ac82f551bbfb
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/rockchip,pcie3-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip PCIe v3 phy
+
+maintainers:
+ - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+ compatible:
+ enum:
+ - rockchip,rk3568-pcie3-phy
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 3
+ maxItems: 3
+
+ clock-names:
+ items:
+ - const: refclk_m
+ - const: refclk_n
+ - const: pclk
+
+ minItems: 3
+
+ lane-map:
+ description: which lanes (by position) should be mapped to which
+ controller (value). 0 means lane unused, higher value means used.
+ (controller-number +1 )
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 2
+ maxItems: 16
+ items:
+ minimum: 0
+ maximum: 16
+
+ "#phy-cells":
+ const: 0
+
+ resets:
+ maxItems: 1
+
+ reset-names:
+ const: phy
+
+ rockchip,phy-grf:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: phandle to the syscon managing the phy "general register files"
+
+ rockchip,pipe-grf:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: phandle to the syscon managing the pipe "general register files"
+
+required:
+ - compatible
+ - reg
+ - rockchip,phy-grf
+ - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/rk3568-cru.h>
+ pcie30phy: phy@fe8c0000 {
+ compatible = "rockchip,rk3568-pcie3-phy";
+ reg = <0x0 0xfe8c0000 0x0 0x20000>;
+ #phy-cells = <0>;
+ clocks = <&pmucru CLK_PCIE30PHY_REF_M>,
+ <&pmucru CLK_PCIE30PHY_REF_N>,
+ <&cru PCLK_PCIE30PHY>;
+ clock-names = "refclk_m", "refclk_n", "pclk";
+ resets = <&cru SRST_PCIE30PHY>;
+ reset-names = "phy";
+ rockchip,phy-grf = <&pcie30_phy_grf>;
+ };
--
2.25.1
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