From a03d23f860eb438c7da88f934448e6caa0f92851 Mon Sep 17 00:00:00 2001 From: Biju Das Date: Wed, 5 Jul 2023 18:09:59 +0100 Subject: [PATCH] dt-bindings: clock: Add Renesas versa3 clock generator bindings Document Renesas versa3 clock generator(5P35023) bindings. The 5P35023 is a VersaClock programmable clock generator and is designed for low-power, consumer, and high-performance PCI Express applications. The 5P35023 device is a three PLL architecture design, and each PLL is individually programmable and allowing for up to 6 unique frequency outputs. Signed-off-by: Biju Das Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20230705171000.85786-2-biju.das.jz@bp.renesas.com Signed-off-by: Stephen Boyd --- .../devicetree/bindings/clock/renesas,5p35023.yaml | 86 ++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/renesas,5p35023.yaml diff --git a/Documentation/devicetree/bindings/clock/renesas,5p35023.yaml b/Documentation/devicetree/bindings/clock/renesas,5p35023.yaml new file mode 100644 index 0000000..839648e --- /dev/null +++ b/Documentation/devicetree/bindings/clock/renesas,5p35023.yaml @@ -0,0 +1,86 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/renesas,5p35023.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas 5p35023 VersaClock 3 programmable I2C clock generator + +maintainers: + - Biju Das + +description: | + The 5P35023 is a VersaClock programmable clock generator and + is designed for low-power, consumer, and high-performance PCI + express applications. The 5P35023 device is a three PLL + architecture design, and each PLL is individually programmable + and allowing for up to 6 unique frequency outputs. + + An internal OTP memory allows the user to store the configuration + in the device. After power up, the user can change the device register + settings through the I2C interface when I2C mode is selected. + + The driver can read a full register map from the DT, and will use that + register map to initialize the attached part (via I2C) when the system + boots. Any configuration not supported by the common clock framework + must be done via the full register map, including optimized settings. + + Link to datasheet: + https://www.renesas.com/us/en/products/clocks-timing/clock-generation/programmable-clocks/5p35023-versaclock-3s-programmable-clock-generator + +properties: + compatible: + enum: + - renesas,5p35023 + + reg: + maxItems: 1 + + '#clock-cells': + const: 1 + + clocks: + maxItems: 1 + + renesas,settings: + description: Optional, complete register map of the device. + Optimized settings for the device must be provided in full + and are written during initialization. + $ref: /schemas/types.yaml#/definitions/uint8-array + maxItems: 37 + +required: + - compatible + - reg + - '#clock-cells' + - clocks + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + versa3: clock-generator@68 { + compatible = "renesas,5p35023"; + reg = <0x68>; + #clock-cells = <1>; + + clocks = <&x1_x2>; + + renesas,settings = [ + 80 00 11 19 4c 02 23 7f 83 19 08 a9 5f 25 24 bf + 00 14 7a e1 00 00 00 00 01 55 59 bb 3f 30 90 b6 + 80 b0 45 c4 95 + ]; + + assigned-clocks = <&versa3 0>, <&versa3 1>, + <&versa3 2>, <&versa3 3>, + <&versa3 4>, <&versa3 5>; + assigned-clock-rates = <12288000>, <25000000>, + <12000000>, <11289600>, + <11289600>, <24000000>; + }; + }; -- 2.7.4