clk: meson: rework and clean drivers dependencies
Initially, the meson clock directory only hosted 2 controllers drivers,
for meson8 and gxbb. At the time, both used the same set of clock drivers
so managing the dependencies was not a big concern.
Since this ancient time, entropy did its job, controllers with different
requirement and specific clock drivers have been added. Unfortunately, we
did not do a great job at managing the dependencies between the
controllers and the different clock drivers. Some drivers, such as
clk-phase or vid-pll-div, are compiled even if they are useless on the
target (meson8). As we are adding new controllers, we need to be able to
pick a driver w/o pulling the whole thing.
The patch aims to clean things up by:
* providing a dedicated CONFIG_ for each clock drivers
* allowing clock drivers to be compiled as a modules, if possible
* stating explicitly which drivers are required by each controller.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201125841.26785-5-jbrunet@baylibre.com
2019-02-01 19:58:41 +07:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
|
/*
|
|
|
|
|
* Copyright (c) 2019 BayLibre, SAS.
|
|
|
|
|
* Author: Jerome Brunet <jbrunet@baylibre.com>
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef __MESON_CLK_MPLL_H
|
|
|
|
|
#define __MESON_CLK_MPLL_H
|
|
|
|
|
|
|
|
|
|
#include <linux/clk-provider.h>
|
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
|
|
|
|
|
|
#include "parm.h"
|
|
|
|
|
|
|
|
|
|
struct meson_clk_mpll_data {
|
|
|
|
|
struct parm sdm;
|
|
|
|
|
struct parm sdm_en;
|
|
|
|
|
struct parm n2;
|
|
|
|
|
struct parm ssen;
|
|
|
|
|
struct parm misc;
|
2019-05-13 19:31:12 +07:00
|
|
|
const struct reg_sequence *init_regs;
|
|
|
|
|
unsigned int init_count;
|
clk: meson: rework and clean drivers dependencies
Initially, the meson clock directory only hosted 2 controllers drivers,
for meson8 and gxbb. At the time, both used the same set of clock drivers
so managing the dependencies was not a big concern.
Since this ancient time, entropy did its job, controllers with different
requirement and specific clock drivers have been added. Unfortunately, we
did not do a great job at managing the dependencies between the
controllers and the different clock drivers. Some drivers, such as
clk-phase or vid-pll-div, are compiled even if they are useless on the
target (meson8). As we are adding new controllers, we need to be able to
pick a driver w/o pulling the whole thing.
The patch aims to clean things up by:
* providing a dedicated CONFIG_ for each clock drivers
* allowing clock drivers to be compiled as a modules, if possible
* stating explicitly which drivers are required by each controller.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201125841.26785-5-jbrunet@baylibre.com
2019-02-01 19:58:41 +07:00
|
|
|
spinlock_t *lock;
|
|
|
|
|
u8 flags;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define CLK_MESON_MPLL_ROUND_CLOSEST BIT(0)
|
2019-05-13 19:31:09 +07:00
|
|
|
#define CLK_MESON_MPLL_SPREAD_SPECTRUM BIT(1)
|
clk: meson: rework and clean drivers dependencies
Initially, the meson clock directory only hosted 2 controllers drivers,
for meson8 and gxbb. At the time, both used the same set of clock drivers
so managing the dependencies was not a big concern.
Since this ancient time, entropy did its job, controllers with different
requirement and specific clock drivers have been added. Unfortunately, we
did not do a great job at managing the dependencies between the
controllers and the different clock drivers. Some drivers, such as
clk-phase or vid-pll-div, are compiled even if they are useless on the
target (meson8). As we are adding new controllers, we need to be able to
pick a driver w/o pulling the whole thing.
The patch aims to clean things up by:
* providing a dedicated CONFIG_ for each clock drivers
* allowing clock drivers to be compiled as a modules, if possible
* stating explicitly which drivers are required by each controller.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201125841.26785-5-jbrunet@baylibre.com
2019-02-01 19:58:41 +07:00
|
|
|
|
|
|
|
|
extern const struct clk_ops meson_clk_mpll_ro_ops;
|
|
|
|
|
extern const struct clk_ops meson_clk_mpll_ops;
|
|
|
|
|
|
|
|
|
|
#endif /* __MESON_CLK_MPLL_H */
|