arch/arm/boot/dts/bcm-cygnus-clock.dtsi

   1 /*
   2  *  BSD LICENSE
   3  *
   4  *  Copyright(c) 2014 Broadcom Corporation.  All rights reserved.
   5  *
   6  *  Redistribution and use in source and binary forms, with or without
   7  *  modification, are permitted provided that the following conditions
   8  *  are met:
   9  *
  10  *    * Redistributions of source code must retain the above copyright
  11  *      notice, this list of conditions and the following disclaimer.
  12  *    * Redistributions in binary form must reproduce the above copyright
  13  *      notice, this list of conditions and the following disclaimer in
  14  *      the documentation and/or other materials provided with the
  15  *      distribution.
  16  *    * Neither the name of Broadcom Corporation nor the names of its
  17  *      contributors may be used to endorse or promote products derived
  18  *      from this software without specific prior written permission.
  19  *
  20  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 clocks {
  34         #address-cells = <1>;
  35         #size-cells = <1>;
  36         ranges;
  37
  38         osc: oscillator {
  39                 #clock-cells = <0>;
  40                 compatible = "fixed-clock";
  41                 clock-frequency = <25000000>;
  42         };
  43
  44         /* Cygnus ARM PLL */
  45         armpll: armpll {
  46                 #clock-cells = <0>;
  47                 compatible = "brcm,cygnus-armpll";
  48                 clocks = <&osc>;
  49                 reg = <0x19000000 0x1000>;
  50         };
  51
  52         /* peripheral clock for system timer */
  53         periph_clk: arm_periph_clk {
  54                 #clock-cells = <0>;
  55                 compatible = "fixed-factor-clock";
  56                 clocks = <&armpll>;
  57                 clock-div = <2>;
  58                 clock-mult = <1>;
  59         };
  60
  61         /* APB bus clock */
  62         apb_clk: apb_clk {
  63                 #clock-cells = <0>;
  64                 compatible = "fixed-factor-clock";
  65                 clocks = <&armpll>;
  66                 clock-div = <4>;
  67                 clock-mult = <1>;
  68         };
  69
  70         genpll: genpll {
  71                 #clock-cells = <1>;
  72                 compatible = "brcm,cygnus-genpll";
  73                 reg = <0x0301d000 0x2c>, <0x0301c020 0x4>;
  74                 clocks = <&osc>;
  75                 clock-output-names = "genpll", "axi21", "250mhz", "ihost_sys",
  76                                      "enet_sw", "audio_125", "can";
  77         };
  78
  79         /* always 1/2 of the axi21 clock */
  80         axi41_clk: axi41_clk {
  81                 #clock-cells = <0>;
  82                 compatible = "fixed-factor-clock";
  83                 clocks = <&genpll 1>;
  84                 clock-div = <2>;
  85                 clock-mult = <1>;
  86         };
  87
  88         /* always 1/4 of the axi21 clock */
  89         axi81_clk: axi81_clk {
  90                 #clock-cells = <0>;
  91                 compatible = "fixed-factor-clock";
  92                 clocks = <&genpll 1>;
  93                 clock-div = <4>;
  94                 clock-mult = <1>;
  95         };
  96
  97         lcpll0: lcpll0 {
  98                 #clock-cells = <1>;
  99                 compatible = "brcm,cygnus-lcpll0";
 100                 reg = <0x0301d02c 0x1c>, <0x0301c020 0x4>;
 101                 clocks = <&osc>;
 102                 clock-output-names = "lcpll0", "pcie_phy", "ddr_phy", "sdio",
 103                                      "usb_phy", "smart_card", "ch5";
 104         };
 105
 106         mipipll: mipipll {
 107                 #clock-cells = <1>;
 108                 compatible = "brcm,cygnus-mipipll";
 109                 reg = <0x180a9800 0x2c>, <0x0301c020 0x4>, <0x180aa024 0x4>;
 110                 clocks = <&osc>;
 111                 clock-output-names = "mipipll", "ch0_unused", "ch1_lcd",
 112                                      "ch2_v3d", "ch3_unused", "ch4_unused",
 113                                      "ch5_unused";
 114         };
 115
 116         asiu_clks: asiu_clks {
 117                 #clock-cells = <1>;
 118                 compatible = "brcm,cygnus-asiu-clk";
 119                 reg = <0x0301d048 0xc>, <0x180aa024 0x4>;
 120
 121                 clocks = <&osc>;
 122                 clock-output-names = "keypad", "adc/touch", "pwm";
 123         };
 124 };