JFIF$        dd7 

Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/linux/clk/analogbits-wrpll-cln28hpc.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2018-2019 SiFive, Inc.
 * Wesley Terpstra
 * Paul Walmsley
 */

#ifndef __LINUX_CLK_ANALOGBITS_WRPLL_CLN28HPC_H
#define __LINUX_CLK_ANALOGBITS_WRPLL_CLN28HPC_H

#include <linux/types.h>

/* DIVQ_VALUES: number of valid DIVQ values */
#define DIVQ_VALUES				6

/*
 * Bit definitions for struct wrpll_cfg.flags
 *
 * WRPLL_FLAGS_BYPASS_FLAG: if set, the PLL is either in bypass, or should be
 *	programmed to enter bypass
 * WRPLL_FLAGS_RESET_FLAG: if set, the PLL is in reset
 * WRPLL_FLAGS_INT_FEEDBACK_FLAG: if set, the PLL is configured for internal
 *	feedback mode
 * WRPLL_FLAGS_EXT_FEEDBACK_FLAG: if set, the PLL is configured for external
 *	feedback mode (not yet supported by this driver)
 */
#define WRPLL_FLAGS_BYPASS_SHIFT		0
#define WRPLL_FLAGS_BYPASS_MASK		BIT(WRPLL_FLAGS_BYPASS_SHIFT)
#define WRPLL_FLAGS_RESET_SHIFT		1
#define WRPLL_FLAGS_RESET_MASK		BIT(WRPLL_FLAGS_RESET_SHIFT)
#define WRPLL_FLAGS_INT_FEEDBACK_SHIFT	2
#define WRPLL_FLAGS_INT_FEEDBACK_MASK	BIT(WRPLL_FLAGS_INT_FEEDBACK_SHIFT)
#define WRPLL_FLAGS_EXT_FEEDBACK_SHIFT	3
#define WRPLL_FLAGS_EXT_FEEDBACK_MASK	BIT(WRPLL_FLAGS_EXT_FEEDBACK_SHIFT)

/**
 * struct wrpll_cfg - WRPLL configuration values
 * @divr: reference divider value (6 bits), as presented to the PLL signals
 * @divf: feedback divider value (9 bits), as presented to the PLL signals
 * @divq: output divider value (3 bits), as presented to the PLL signals
 * @flags: PLL configuration flags.  See above for more information
 * @range: PLL loop filter range.  See below for more information
 * @output_rate_cache: cached output rates, swept across DIVQ
 * @parent_rate: PLL refclk rate for which values are valid
 * @max_r: maximum possible R divider value, given @parent_rate
 * @init_r: initial R divider value to start the search from
 *
 * @divr, @divq, @divq, @range represent what the PLL expects to see
 * on its input signals.  Thus @divr and @divf are the actual divisors
 * minus one.  @divq is a power-of-two divider; for example, 1 =
 * divide-by-2 and 6 = divide-by-64.  0 is an invalid @divq value.
 *
 * When initially passing a struct wrpll_cfg record, the
 * record should be zero-initialized with the exception of the @flags
 * field.  The only flag bits that need to be set are either
 * WRPLL_FLAGS_INT_FEEDBACK or WRPLL_FLAGS_EXT_FEEDBACK.
 */
struct wrpll_cfg {
	u8 divr;
	u8 divq;
	u8 range;
	u8 flags;
	u16 divf;
/* private: */
	u32 output_rate_cache[DIVQ_VALUES];
	unsigned long parent_rate;
	u8 max_r;
	u8 init_r;
};

int wrpll_configure_for_rate(struct wrpll_cfg *c, u32 target_rate,
			     unsigned long parent_rate);

unsigned int wrpll_calc_max_lock_us(const struct wrpll_cfg *c);

unsigned long wrpll_calc_output_rate(const struct wrpll_cfg *c,
				     unsigned long parent_rate);

#endif /* __LINUX_CLK_ANALOGBITS_WRPLL_CLN28HPC_H */
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg