1 | /*- |
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2 | * SPDX-License-Identifier: BSD-2-Clause-FreeBSD |
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3 | * |
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4 | * Copyright (c) 2021 Chris Johns <chrisj@rtems.org> |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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26 | * SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | /* |
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30 | * Defines for Xilinx Versal ACAP SLCR registers. |
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31 | * |
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32 | * Reference: |
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33 | * https://www.xilinx.com/html_docs/registers/am012/mod___crl.html |
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34 | */ |
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35 | |
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36 | #ifndef _VERSAL_SLCR_H_ |
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37 | #define _VERSAL_SLCR_H_ |
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38 | |
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39 | #define VERSAL_SLCR_CRF_OFFSET 0x01260000 |
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40 | #define VERSAL_SLCR_CRL_OFFSET 0x0f5e0000 |
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41 | |
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42 | /* |
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43 | * PLL controls |
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44 | * |
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45 | * P = PPLL = PMCPLL = PMCPLL_CTRL : PMC PLL Clock |
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46 | * N = NPLL = NOCPLL = NOCPLL_CTRL : NOC PLL Clock |
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47 | * R = RPLL = RPLL_CTRL : Low Power Domain clock |
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48 | */ |
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49 | #define VERSAL_SLCR_P_PLL_CTRL (VERSAL_SLCR_CRF_OFFSET + 0x40) |
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50 | #define VERSAL_SLCR_N_PLL_CTRL (VERSAL_SLCR_CRF_OFFSET + 0x50) |
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51 | #define VERSAL_SLCR_R_PLL_CTRL (VERSAL_SLCR_CRL_OFFSET + 0x40) |
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52 | #define VERSAL_SLCR_PLL_CTRL_RESET (1<<0) |
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53 | #define VERSAL_SLCR_PLL_CTRL_BYPASS (1<<3) |
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54 | #define VERSAL_SLCR_PLL_CTRL_FBDIV_SHIFT 8 |
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55 | #define VERSAL_SLCR_PLL_CTRL_FBDIV_MAX 0xff |
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56 | #define VERSAL_SLCR_PLL_CTRL_FBDIV_MASK (VERSAL_SLCR_PLL_CTRL_FBDIV_MAX<<8) |
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57 | #define VERSAL_SLCR_PLL_CTRL_DIV_SHIFT (16) |
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58 | #define VERSAL_SLCR_PLL_CTRL_DIV_MASK (0x3<<16) |
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59 | #define VERSAL_SLCR_PLL_CTRL_PRE_SRC_SHIFT 20 |
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60 | #define VERSAL_SLCR_PLL_CTRL_PRE_SRC_MASK (0x7<<20) |
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61 | #define VERSAL_SLCR_PLL_CTRL_POST_SRC_SHIFT 24 |
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62 | #define VERSAL_SLCR_PLL_CTRL_POST_SRC_MASK (0x7<<24) |
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63 | #define VERSAL_SLCR_PLL_CTRL_SRC_REF_CLK 0x0 |
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64 | #define VERSAL_SLCR_PLL_CTRL_SRC_REF_CLK_MASK 0x2 |
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65 | #define VERSAL_SLCR_PLL_CTRL_SRC_PL_PMC_ALT_REF_CLK_MASK 0x3 |
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66 | |
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67 | /* Clock controls. */ |
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68 | #define VERSAL_SLCR_GEM0_CLK_CTRL (VERSAL_SLCR_CRL_OFFSET + 0x118) |
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69 | #define VERSAL_SLCR_GEM1_CLK_CTRL (VERSAL_SLCR_CRL_OFFSET + 0x11c) |
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70 | #define VERSAL_SLCR_GEM_CLK_CTRL_CLKACT_RX (1<<27) |
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71 | #define VERSAL_SLCR_GEM_CLK_CTRL_CLKACT_TX (1<<26) |
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72 | #define VERSAL_SLCR_GEM_CLK_CTRL_CLKACT (1<<25) |
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73 | #define VERSAL_SLCR_GEM_CLK_CTRL_DIVISOR_MAX 0x3ff |
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74 | #define VERSAL_SLCR_GEM_CLK_CTRL_DIVISOR_MASK (VERSAL_SLCR_GEM_CLK_CTRL_DIVISOR_MAX<<8) |
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75 | #define VERSAL_SLCR_GEM_CLK_CTRL_DIVISOR_SHIFT 8 |
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76 | #define VERSAL_SLCR_GEM_CLK_CTRL_SRCSEL_MASK (7<<0) |
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77 | #define VERSAL_SLCR_GEM_CLK_CTRL_SRCSEL_P_PLL (0<<0) |
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78 | #define VERSAL_SLCR_GEM_CLK_CTRL_SRCSEL_R_PLL (1<<0) |
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79 | #define VERSAL_SLCR_GEM_CLK_CTRL_SRCSEL_N_PLL (3<<0) |
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80 | |
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81 | #define VERSAL_DEFAULT_PS_CLK_FREQUENCY 33333333 |
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82 | |
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83 | #ifdef _KERNEL |
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84 | extern int cgem_set_ref_clk(int unit, int frequency); |
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85 | #endif |
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86 | #endif /* _VERSAL_SLCR_H_ */ |
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