1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2021 Adrian Chadd <adrian@FreeBSD.org> 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 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef __QCOM_CLK_RCG2_H__ 31 #define __QCOM_CLK_RCG2_H__ 32 33 #include "qcom_clk_freqtbl.h" 34 35 /* Flags */ 36 /* Set the rate on the parent clock, not just ours */ 37 #define QCOM_CLK_RCG2_FLAGS_SET_RATE_PARENT 0x1 38 /* Must not stop this clock/gate! */ 39 #define QCOM_CLK_RCG2_FLAGS_CRITICAL 0x2 40 41 /* prediv to hw mapping */ 42 #define QCOM_CLK_FREQTBL_PREDIV_RCG2(prediv) (2*(prediv)-1) 43 44 struct qcom_clk_rcg2_def { 45 struct clknode_init_def clkdef; 46 uint32_t cmd_rcgr; /* rcg2 register start */ 47 uint32_t hid_width; /* pre-divisor width */ 48 uint32_t mnd_width; /* mn:d divisor width */ 49 int32_t safe_src_idx; /* safe parent when disabling a shared 50 * rcg2 */ 51 uint32_t cfg_offset; /* cfg offset after cmd_rcgr */ 52 int32_t safe_pre_parent_idx; /* safe parent before switching 53 * parent mux */ 54 uint32_t flags; 55 const struct qcom_clk_freq_tbl *freq_tbl; 56 }; 57 58 extern int qcom_clk_rcg2_register(struct clkdom *clkdom, 59 struct qcom_clk_rcg2_def *clkdef); 60 61 #endif /* __QCOM_CLK_RCG2_H__ */ 62