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Message-Id: <1585301636-24399-4-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Date: Fri, 27 Mar 2020 18:33:55 +0900
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To: kishon@...com, robh+dt@...nel.org
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: [PATCH v4 3/4] dt-bindings: phy: renesas: usb3-phy: convert bindings to json-schema
Convert Renesas R-Car generation 3 USB 3.0 PHY bindings documentation
to json-schema.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
.../devicetree/bindings/phy/rcar-gen3-phy-usb3.txt | 52 ---------------
.../devicetree/bindings/phy/renesas,usb3-phy.yaml | 78 ++++++++++++++++++++++
2 files changed, 78 insertions(+), 52 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt
create mode 100644 Documentation/devicetree/bindings/phy/renesas,usb3-phy.yaml
diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt
deleted file mode 100644
index 0fe433b..00000000
--- a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb3.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-* Renesas R-Car generation 3 USB 3.0 PHY
-
-This file provides information on what the device node for the R-Car generation
-3 and RZ/G2 USB 3.0 PHY contain.
-If you want to enable spread spectrum clock (ssc), you should use USB_EXTAL
-instead of USB3_CLK. However, if you don't want to these features, you don't
-need this driver.
-
-Required properties:
-- compatible: "renesas,r8a774a1-usb3-phy" if the device is a part of an R8A774A1
- SoC.
- "renesas,r8a774b1-usb3-phy" if the device is a part of an R8A774B1
- SoC.
- "renesas,r8a7795-usb3-phy" if the device is a part of an R8A7795
- SoC.
- "renesas,r8a7796-usb3-phy" if the device is a part of an R8A7796
- SoC.
- "renesas,r8a77965-usb3-phy" if the device is a part of an
- R8A77965 SoC.
- "renesas,rcar-gen3-usb3-phy" for a generic R-Car Gen3 or RZ/G2
- compatible device.
-
- When compatible with the generic version, nodes must list the
- SoC-specific version corresponding to the platform first
- followed by the generic version.
-
-- reg: offset and length of the USB 3.0 PHY register block.
-- clocks: A list of phandles and clock-specifier pairs.
-- clock-names: Name of the clocks.
- - The funcional clock must be "usb3-if".
- - The usb3's external clock must be "usb3s_clk".
- - The usb2's external clock must be "usb_extal". If you want to use the ssc,
- the clock-frequency must not be 0.
-- #phy-cells: see phy-bindings.txt in the same directory, must be <0>.
-
-Optional properties:
-- renesas,ssc-range: Enable/disable spread spectrum clock (ssc) by using
- the following values as u32:
- - 0 (or the property doesn't exist): disable the ssc
- - 4980: enable the ssc as -4980 ppm
- - 4492: enable the ssc as -4492 ppm
- - 4003: enable the ssc as -4003 ppm
-
-Example (R-Car H3):
-
- usb-phy@...ee000 {
- compatible = "renesas,r8a7795-usb3-phy",
- "renesas,rcar-gen3-usb3-phy";
- reg = <0 0xe65ee000 0 0x90>;
- clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>, <&usb_extal>;
- clock-names = "usb3-if", "usb3s_clk", "usb_extal";
- };
diff --git a/Documentation/devicetree/bindings/phy/renesas,usb3-phy.yaml b/Documentation/devicetree/bindings/phy/renesas,usb3-phy.yaml
new file mode 100644
index 00000000..edd5417
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/renesas,usb3-phy.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/renesas,usb3-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car generation 3 USB 3.0 PHY
+
+maintainers:
+ - Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - renesas,r8a774a1-usb3-phy # RZ/G2M
+ - renesas,r8a774b1-usb3-phy # RZ/G2N
+ - renesas,r8a7795-usb3-phy # R-Car H3
+ - renesas,r8a7796-usb3-phy # R-Car M3-W
+ - renesas,r8a77965-usb3-phy # R-Car M3-N
+ - const: renesas,rcar-gen3-usb3-phy
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 2
+ maxItems: 3
+
+ clock-names:
+ # If you want to use the ssc, the clock-frequency of usb_extal
+ # must not be 0.
+ minItems: 2
+ maxItems: 3
+ items:
+ - const: usb3-if # The funcional clock
+ - const: usb3s_clk # The usb3's external clock
+ - const: usb_extal # The usb2's external clock
+
+ '#phy-cells':
+ # see phy-bindings.txt in the same directory
+ const: 0
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ renesas,ssc-range:
+ description: |
+ Enable/disable spread spectrum clock (ssc). 0 or the property doesn't
+ exist means disabling the ssc. The actual value will be -<value> ppm.
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [ 0, 4003, 4492, 4980 ]
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - '#phy-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
+ #include <dt-bindings/power/r8a7795-sysc.h>
+
+ usb-phy@...ee000 {
+ compatible = "renesas,r8a7795-usb3-phy", "renesas,rcar-gen3-usb3-phy";
+ reg = <0xe65ee000 0x90>;
+ clocks = <&cpg CPG_MOD 328>, <&usb3s0_clk>, <&usb_extal>;
+ clock-names = "usb3-if", "usb3s_clk", "usb_extal";
+ #phy-cells = <0>;
+ };
--
2.7.4
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