1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/clock/renesas,5p35023.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Renesas 5p35023 VersaClock 3 programmable I2C clock generator 8 9maintainers: 10 - Biju Das <biju.das.jz@bp.renesas.com> 11 12description: | 13 The 5P35023 is a VersaClock programmable clock generator and 14 is designed for low-power, consumer, and high-performance PCI 15 express applications. The 5P35023 device is a three PLL 16 architecture design, and each PLL is individually programmable 17 and allowing for up to 6 unique frequency outputs. 18 19 An internal OTP memory allows the user to store the configuration 20 in the device. After power up, the user can change the device register 21 settings through the I2C interface when I2C mode is selected. 22 23 The driver can read a full register map from the DT, and will use that 24 register map to initialize the attached part (via I2C) when the system 25 boots. Any configuration not supported by the common clock framework 26 must be done via the full register map, including optimized settings. 27 28 Link to datasheet: 29 https://www.renesas.com/us/en/products/clocks-timing/clock-generation/programmable-clocks/5p35023-versaclock-3s-programmable-clock-generator 30 31properties: 32 compatible: 33 enum: 34 - renesas,5p35023 35 36 reg: 37 maxItems: 1 38 39 '#clock-cells': 40 description: 41 The index in the assigned-clocks is mapped to the output clock as below 42 0 - REF, 1 - SE1, 2 - SE2, 3 - SE3, 4 - DIFF1, 5 - DIFF2. 43 const: 1 44 45 clocks: 46 maxItems: 1 47 48 renesas,settings: 49 description: Optional, complete register map of the device. 50 Optimized settings for the device must be provided in full 51 and are written during initialization. 52 $ref: /schemas/types.yaml#/definitions/uint8-array 53 maxItems: 37 54 55required: 56 - compatible 57 - reg 58 - '#clock-cells' 59 - clocks 60 61additionalProperties: false 62 63examples: 64 - | 65 i2c { 66 #address-cells = <1>; 67 #size-cells = <0>; 68 69 versa3: clock-generator@68 { 70 compatible = "renesas,5p35023"; 71 reg = <0x68>; 72 #clock-cells = <1>; 73 74 clocks = <&x1>; 75 76 renesas,settings = [ 77 80 00 11 19 4c 02 23 7f 83 19 08 a9 5f 25 24 bf 78 00 14 7a e1 00 00 00 00 01 55 59 bb 3f 30 90 b6 79 80 b0 45 c4 95 80 ]; 81 82 assigned-clocks = <&versa3 0>, <&versa3 1>, 83 <&versa3 2>, <&versa3 3>, 84 <&versa3 4>, <&versa3 5>; 85 assigned-clock-rates = <24000000>, <11289600>, 86 <11289600>, <12000000>, 87 <25000000>, <12288000>; 88 }; 89 }; 90