mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-01-11 07:39:47 +00:00
b6ec400aa1
Modern meson PLL IPs are a little bit different from early known PLLs.
The main difference is located in the init/enable/disable sequences; the
rate logic is the same.
In A1 PLL, the PLL enable sequence is different, so add new optional pll
reg bits and use the new power-on sequence to enable the PLL:
1. enable the pll, delay for 10us
2. enable the pll self-adaption current module, delay for 40us
3. enable the lock detect module
Signed-off-by: Jian Hu <jian.hu@amlogic.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Link: https://lore.kernel.org/r/20230523135351.19133-3-ddrokosov@sberdevices.ru
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (c) 2019 BayLibre, SAS.
|
|
* Author: Jerome Brunet <jbrunet@baylibre.com>
|
|
*/
|
|
|
|
#ifndef __MESON_CLK_PLL_H
|
|
#define __MESON_CLK_PLL_H
|
|
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/regmap.h>
|
|
#include "parm.h"
|
|
|
|
struct pll_params_table {
|
|
unsigned int m;
|
|
unsigned int n;
|
|
};
|
|
|
|
struct pll_mult_range {
|
|
unsigned int min;
|
|
unsigned int max;
|
|
};
|
|
|
|
#define PLL_PARAMS(_m, _n) \
|
|
{ \
|
|
.m = (_m), \
|
|
.n = (_n), \
|
|
}
|
|
|
|
#define CLK_MESON_PLL_ROUND_CLOSEST BIT(0)
|
|
|
|
struct meson_clk_pll_data {
|
|
struct parm en;
|
|
struct parm m;
|
|
struct parm n;
|
|
struct parm frac;
|
|
struct parm l;
|
|
struct parm rst;
|
|
struct parm current_en;
|
|
struct parm l_detect;
|
|
const struct reg_sequence *init_regs;
|
|
unsigned int init_count;
|
|
const struct pll_params_table *table;
|
|
const struct pll_mult_range *range;
|
|
u8 flags;
|
|
};
|
|
|
|
extern const struct clk_ops meson_clk_pll_ro_ops;
|
|
extern const struct clk_ops meson_clk_pll_ops;
|
|
extern const struct clk_ops meson_clk_pcie_pll_ops;
|
|
|
|
#endif /* __MESON_CLK_PLL_H */
|