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clk: intel: Add CGU clock driver for a new SoC 

Clock Generation Unit(CGU) is a new clock controller IP of a forthcoming
Intel network processor SoC named Lightning Mountain(LGM). It provides
programming interfaces to control & configure all CPU & peripheral clocks.
Add common clock framework based clock controller driver for CGU.

Signed-off-by: Rahul Tanwar <rahul.tanwar@linux.intel.com>
Link: https://lkml.kernel.org/r/42a4f71847714df482bacffdcd84341a4052800b.1587102634.git.rahul.tanwar@linux.intel.com
[sboyd@kernel.org: Kill init function to alloc and cleanup newline]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Rahul Tanwar 2020-04-17 13:54:47 +08:00 коммит произвёл Stephen Boyd
Родитель e2266f4c38
Коммит d058fd9e89
7 изменённых файлов: 1612 добавлений и 0 удалений
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1
drivers/clk/Kconfig
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@ -360,6 +360,7 @@ source "drivers/clk/sunxi-ng/Kconfig"
source "drivers/clk/tegra/Kconfig"
source "drivers/clk/ti/Kconfig"
source "drivers/clk/uniphier/Kconfig"
source "drivers/clk/x86/Kconfig"
source "drivers/clk/zynqmp/Kconfig"
endmenu

8
drivers/clk/x86/Kconfig Normal file
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@ -0,0 +1,8 @@
# SPDX-License-Identifier: GPL-2.0-only
config CLK_LGM_CGU
depends on OF && HAS_IOMEM && (X86 || COMPILE_TEST)
select OF_EARLY_FLATTREE
bool "Clock driver for Lightning Mountain(LGM) platform"
help
Clock Generation Unit(CGU) driver for Intel Lightning Mountain(LGM)
network processor SoC.

1
drivers/clk/x86/Makefile
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@ -3,3 +3,4 @@ obj-$(CONFIG_PMC_ATOM) += clk-pmc-atom.o
obj-$(CONFIG_X86_AMD_PLATFORM_DEVICE) += clk-st.o
clk-x86-lpss-objs := clk-lpt.o
obj-$(CONFIG_X86_INTEL_LPSS) += clk-x86-lpss.o
obj-$(CONFIG_CLK_LGM_CGU) += clk-cgu.o clk-cgu-pll.o clk-lgm.o

156
drivers/clk/x86/clk-cgu-pll.c Normal file
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@ -0,0 +1,156 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 Intel Corporation.
* Zhu YiXin <yixin.zhu@intel.com>
* Rahul Tanwar <rahul.tanwar@intel.com>
*/
#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/iopoll.h>
#include <linux/of.h>
#include "clk-cgu.h"
#define to_lgm_clk_pll(_hw) container_of(_hw, struct lgm_clk_pll, hw)
#define PLL_REF_DIV(x) ((x) + 0x08)
/*
* Calculate formula:
* rate = (prate * mult + (prate * frac) / frac_div) / div
*/
static unsigned long
lgm_pll_calc_rate(unsigned long prate, unsigned int mult,
unsigned int div, unsigned int frac, unsigned int frac_div)
{
u64 crate, frate, rate64;
rate64 = prate;
crate = rate64 * mult;
frate = rate64 * frac;
do_div(frate, frac_div);
crate += frate;
do_div(crate, div);
return crate;
}
static unsigned long lgm_pll_recalc_rate(struct clk_hw *hw, unsigned long prate)
{
struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
unsigned int div, mult, frac;
unsigned long flags;
spin_lock_irqsave(&pll->lock, flags);
mult = lgm_get_clk_val(pll->membase, PLL_REF_DIV(pll->reg), 0, 12);
div = lgm_get_clk_val(pll->membase, PLL_REF_DIV(pll->reg), 18, 6);
frac = lgm_get_clk_val(pll->membase, pll->reg, 2, 24);
spin_unlock_irqrestore(&pll->lock, flags);
if (pll->type == TYPE_LJPLL)
div *= 4;
return lgm_pll_calc_rate(prate, mult, div, frac, BIT(24));
}
static int lgm_pll_is_enabled(struct clk_hw *hw)
{
struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
unsigned long flags;
unsigned int ret;
spin_lock_irqsave(&pll->lock, flags);
ret = lgm_get_clk_val(pll->membase, pll->reg, 0, 1);
spin_unlock_irqrestore(&pll->lock, flags);
return ret;
}
static int lgm_pll_enable(struct clk_hw *hw)
{
struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
unsigned long flags;
u32 val;
int ret;
spin_lock_irqsave(&pll->lock, flags);
lgm_set_clk_val(pll->membase, pll->reg, 0, 1, 1);
ret = readl_poll_timeout_atomic(pll->membase + pll->reg,
val, (val & 0x1), 1, 100);
spin_unlock_irqrestore(&pll->lock, flags);
return ret;
}
static void lgm_pll_disable(struct clk_hw *hw)
{
struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
unsigned long flags;
spin_lock_irqsave(&pll->lock, flags);
lgm_set_clk_val(pll->membase, pll->reg, 0, 1, 0);
spin_unlock_irqrestore(&pll->lock, flags);
}
static const struct clk_ops lgm_pll_ops = {
.recalc_rate = lgm_pll_recalc_rate,
.is_enabled = lgm_pll_is_enabled,
.enable = lgm_pll_enable,
.disable = lgm_pll_disable,
};
static struct clk_hw *
lgm_clk_register_pll(struct lgm_clk_provider *ctx,
const struct lgm_pll_clk_data *list)
{
struct clk_init_data init = {};
struct lgm_clk_pll *pll;
struct device *dev = ctx->dev;
struct clk_hw *hw;
int ret;
init.ops = &lgm_pll_ops;
init.name = list->name;
init.flags = list->flags;
init.parent_data = list->parent_data;
init.num_parents = list->num_parents;
pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL);
if (!pll)
return ERR_PTR(-ENOMEM);
pll->membase = ctx->membase;
pll->lock = ctx->lock;
pll->reg = list->reg;
pll->flags = list->flags;
pll->type = list->type;
pll->hw.init = &init;
hw = &pll->hw;
ret = clk_hw_register(dev, hw);
if (ret)
return ERR_PTR(ret);
return hw;
}
int lgm_clk_register_plls(struct lgm_clk_provider *ctx,
const struct lgm_pll_clk_data *list,
unsigned int nr_clk)
{
struct clk_hw *hw;
int i;
for (i = 0; i < nr_clk; i++, list++) {
hw = lgm_clk_register_pll(ctx, list);
if (IS_ERR(hw)) {
dev_err(ctx->dev, "failed to register pll: %s\n",
list->name);
return PTR_ERR(hw);
}
ctx->clk_data.hws[list->id] = hw;
}
return 0;
}

636
drivers/clk/x86/clk-cgu.c Normal file
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@ -0,0 +1,636 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 Intel Corporation.
* Zhu YiXin <yixin.zhu@intel.com>
* Rahul Tanwar <rahul.tanwar@intel.com>
*/
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/of.h>
#include "clk-cgu.h"
#define GATE_HW_REG_STAT(reg) ((reg) + 0x0)
#define GATE_HW_REG_EN(reg) ((reg) + 0x4)
#define GATE_HW_REG_DIS(reg) ((reg) + 0x8)
#define MAX_DDIV_REG 8
#define MAX_DIVIDER_VAL 64
#define to_lgm_clk_mux(_hw) container_of(_hw, struct lgm_clk_mux, hw)
#define to_lgm_clk_divider(_hw) container_of(_hw, struct lgm_clk_divider, hw)
#define to_lgm_clk_gate(_hw) container_of(_hw, struct lgm_clk_gate, hw)
#define to_lgm_clk_ddiv(_hw) container_of(_hw, struct lgm_clk_ddiv, hw)
static struct clk_hw *lgm_clk_register_fixed(struct lgm_clk_provider *ctx,
const struct lgm_clk_branch *list)
{
unsigned long flags;
if (list->div_flags & CLOCK_FLAG_VAL_INIT) {
spin_lock_irqsave(&ctx->lock, flags);
lgm_set_clk_val(ctx->membase, list->div_off, list->div_shift,
list->div_width, list->div_val);
spin_unlock_irqrestore(&ctx->lock, flags);
}
return clk_hw_register_fixed_rate(NULL, list->name,
list->parent_data[0].name,
list->flags, list->mux_flags);
}
static u8 lgm_clk_mux_get_parent(struct clk_hw *hw)
{
struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
unsigned long flags;
u32 val;
spin_lock_irqsave(&mux->lock, flags);
if (mux->flags & MUX_CLK_SW)
val = mux->reg;
else
val = lgm_get_clk_val(mux->membase, mux->reg, mux->shift,
mux->width);
spin_unlock_irqrestore(&mux->lock, flags);
return clk_mux_val_to_index(hw, NULL, mux->flags, val);
}
static int lgm_clk_mux_set_parent(struct clk_hw *hw, u8 index)
{
struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
unsigned long flags;
u32 val;
val = clk_mux_index_to_val(NULL, mux->flags, index);
spin_lock_irqsave(&mux->lock, flags);
if (mux->flags & MUX_CLK_SW)
mux->reg = val;
else
lgm_set_clk_val(mux->membase, mux->reg, mux->shift,
mux->width, val);
spin_unlock_irqrestore(&mux->lock, flags);
return 0;
}
static int lgm_clk_mux_determine_rate(struct clk_hw *hw,
struct clk_rate_request *req)
{
struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
return clk_mux_determine_rate_flags(hw, req, mux->flags);
}
static const struct clk_ops lgm_clk_mux_ops = {
.get_parent = lgm_clk_mux_get_parent,
.set_parent = lgm_clk_mux_set_parent,
.determine_rate = lgm_clk_mux_determine_rate,
};
static struct clk_hw *
lgm_clk_register_mux(struct lgm_clk_provider *ctx,
const struct lgm_clk_branch *list)
{
unsigned long flags, cflags = list->mux_flags;
struct device *dev = ctx->dev;
u8 shift = list->mux_shift;
u8 width = list->mux_width;
struct clk_init_data init = {};
struct lgm_clk_mux *mux;
u32 reg = list->mux_off;
struct clk_hw *hw;
int ret;
mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
if (!mux)
return ERR_PTR(-ENOMEM);
init.name = list->name;
init.ops = &lgm_clk_mux_ops;
init.flags = list->flags;
init.parent_data = list->parent_data;
init.num_parents = list->num_parents;
mux->membase = ctx->membase;
mux->lock = ctx->lock;
mux->reg = reg;
mux->shift = shift;
mux->width = width;
mux->flags = cflags;
mux->hw.init = &init;
hw = &mux->hw;
ret = clk_hw_register(dev, hw);
if (ret)
return ERR_PTR(ret);
if (cflags & CLOCK_FLAG_VAL_INIT) {
spin_lock_irqsave(&mux->lock, flags);
lgm_set_clk_val(mux->membase, reg, shift, width, list->mux_val);
spin_unlock_irqrestore(&mux->lock, flags);
}
return hw;
}
static unsigned long
lgm_clk_divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
{
struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
unsigned long flags;
unsigned int val;
spin_lock_irqsave(&divider->lock, flags);
val = lgm_get_clk_val(divider->membase, divider->reg,
divider->shift, divider->width);
spin_unlock_irqrestore(&divider->lock, flags);
return divider_recalc_rate(hw, parent_rate, val, divider->table,
divider->flags, divider->width);
}
static long
lgm_clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
return divider_round_rate(hw, rate, prate, divider->table,
divider->width, divider->flags);
}
static int
lgm_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long prate)
{
struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
unsigned long flags;
int value;
value = divider_get_val(rate, prate, divider->table,
divider->width, divider->flags);
if (value < 0)
return value;
spin_lock_irqsave(&divider->lock, flags);
lgm_set_clk_val(divider->membase, divider->reg,
divider->shift, divider->width, value);
spin_unlock_irqrestore(&divider->lock, flags);
return 0;
}
static int lgm_clk_divider_enable_disable(struct clk_hw *hw, int enable)
{
struct lgm_clk_divider *div = to_lgm_clk_divider(hw);
unsigned long flags;
spin_lock_irqsave(&div->lock, flags);
lgm_set_clk_val(div->membase, div->reg, div->shift_gate,
div->width_gate, enable);
spin_unlock_irqrestore(&div->lock, flags);
return 0;
}
static int lgm_clk_divider_enable(struct clk_hw *hw)
{
return lgm_clk_divider_enable_disable(hw, 1);
}
static void lgm_clk_divider_disable(struct clk_hw *hw)
{
lgm_clk_divider_enable_disable(hw, 0);
}
static const struct clk_ops lgm_clk_divider_ops = {
.recalc_rate = lgm_clk_divider_recalc_rate,
.round_rate = lgm_clk_divider_round_rate,
.set_rate = lgm_clk_divider_set_rate,
.enable = lgm_clk_divider_enable,
.disable = lgm_clk_divider_disable,
};
static struct clk_hw *
lgm_clk_register_divider(struct lgm_clk_provider *ctx,
const struct lgm_clk_branch *list)
{
unsigned long flags, cflags = list->div_flags;
struct device *dev = ctx->dev;
struct lgm_clk_divider *div;
struct clk_init_data init = {};
u8 shift = list->div_shift;
u8 width = list->div_width;
u8 shift_gate = list->div_shift_gate;
u8 width_gate = list->div_width_gate;
u32 reg = list->div_off;
struct clk_hw *hw;
int ret;
div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
if (!div)
return ERR_PTR(-ENOMEM);
init.name = list->name;
init.ops = &lgm_clk_divider_ops;
init.flags = list->flags;
init.parent_data = list->parent_data;
init.num_parents = 1;
div->membase = ctx->membase;
div->lock = ctx->lock;
div->reg = reg;
div->shift = shift;
div->width = width;
div->shift_gate = shift_gate;
div->width_gate = width_gate;
div->flags = cflags;
div->table = list->div_table;
div->hw.init = &init;
hw = &div->hw;
ret = clk_hw_register(dev, hw);
if (ret)
return ERR_PTR(ret);
if (cflags & CLOCK_FLAG_VAL_INIT) {
spin_lock_irqsave(&div->lock, flags);
lgm_set_clk_val(div->membase, reg, shift, width, list->div_val);
spin_unlock_irqrestore(&div->lock, flags);
}
return hw;
}
static struct clk_hw *
lgm_clk_register_fixed_factor(struct lgm_clk_provider *ctx,
const struct lgm_clk_branch *list)
{
unsigned long flags;
struct clk_hw *hw;
hw = clk_hw_register_fixed_factor(ctx->dev, list->name,
list->parent_data[0].name, list->flags,
list->mult, list->div);
if (IS_ERR(hw))
return ERR_CAST(hw);
if (list->div_flags & CLOCK_FLAG_VAL_INIT) {
spin_lock_irqsave(&ctx->lock, flags);
lgm_set_clk_val(ctx->membase, list->div_off, list->div_shift,
list->div_width, list->div_val);
spin_unlock_irqrestore(&ctx->lock, flags);
}
return hw;
}
static int lgm_clk_gate_enable(struct clk_hw *hw)
{
struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
unsigned long flags;
unsigned int reg;
spin_lock_irqsave(&gate->lock, flags);
reg = GATE_HW_REG_EN(gate->reg);
lgm_set_clk_val(gate->membase, reg, gate->shift, 1, 1);
spin_unlock_irqrestore(&gate->lock, flags);
return 0;
}
static void lgm_clk_gate_disable(struct clk_hw *hw)
{
struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
unsigned long flags;
unsigned int reg;
spin_lock_irqsave(&gate->lock, flags);
reg = GATE_HW_REG_DIS(gate->reg);
lgm_set_clk_val(gate->membase, reg, gate->shift, 1, 1);
spin_unlock_irqrestore(&gate->lock, flags);
}
static int lgm_clk_gate_is_enabled(struct clk_hw *hw)
{
struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
unsigned int reg, ret;
unsigned long flags;
spin_lock_irqsave(&gate->lock, flags);
reg = GATE_HW_REG_STAT(gate->reg);
ret = lgm_get_clk_val(gate->membase, reg, gate->shift, 1);
spin_unlock_irqrestore(&gate->lock, flags);
return ret;
}
static const struct clk_ops lgm_clk_gate_ops = {
.enable = lgm_clk_gate_enable,
.disable = lgm_clk_gate_disable,
.is_enabled = lgm_clk_gate_is_enabled,
};
static struct clk_hw *
lgm_clk_register_gate(struct lgm_clk_provider *ctx,
const struct lgm_clk_branch *list)
{
unsigned long flags, cflags = list->gate_flags;
const char *pname = list->parent_data[0].name;
struct device *dev = ctx->dev;
u8 shift = list->gate_shift;
struct clk_init_data init = {};
struct lgm_clk_gate *gate;
u32 reg = list->gate_off;
struct clk_hw *hw;
int ret;
gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL);
if (!gate)
return ERR_PTR(-ENOMEM);
init.name = list->name;
init.ops = &lgm_clk_gate_ops;
init.flags = list->flags;
init.parent_names = pname ? &pname : NULL;
init.num_parents = pname ? 1 : 0;
gate->membase = ctx->membase;
gate->lock = ctx->lock;
gate->reg = reg;
gate->shift = shift;
gate->flags = cflags;
gate->hw.init = &init;
hw = &gate->hw;
ret = clk_hw_register(dev, hw);
if (ret)
return ERR_PTR(ret);
if (cflags & CLOCK_FLAG_VAL_INIT) {
spin_lock_irqsave(&gate->lock, flags);
lgm_set_clk_val(gate->membase, reg, shift, 1, list->gate_val);
spin_unlock_irqrestore(&gate->lock, flags);
}
return hw;
}
int lgm_clk_register_branches(struct lgm_clk_provider *ctx,
const struct lgm_clk_branch *list,
unsigned int nr_clk)
{
struct clk_hw *hw;
unsigned int idx;
for (idx = 0; idx < nr_clk; idx++, list++) {
switch (list->type) {
case CLK_TYPE_FIXED:
hw = lgm_clk_register_fixed(ctx, list);
break;
case CLK_TYPE_MUX:
hw = lgm_clk_register_mux(ctx, list);
break;
case CLK_TYPE_DIVIDER:
hw = lgm_clk_register_divider(ctx, list);
break;
case CLK_TYPE_FIXED_FACTOR:
hw = lgm_clk_register_fixed_factor(ctx, list);
break;
case CLK_TYPE_GATE:
hw = lgm_clk_register_gate(ctx, list);
break;
default:
dev_err(ctx->dev, "invalid clk type\n");
return -EINVAL;
}
if (IS_ERR(hw)) {
dev_err(ctx->dev,
"register clk: %s, type: %u failed!\n",
list->name, list->type);
return -EIO;
}
ctx->clk_data.hws[list->id] = hw;
}
return 0;
}
static unsigned long
lgm_clk_ddiv_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
{
struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
unsigned int div0, div1, exdiv;
unsigned long flags;
u64 prate;
spin_lock_irqsave(&ddiv->lock, flags);
div0 = lgm_get_clk_val(ddiv->membase, ddiv->reg,
ddiv->shift0, ddiv->width0) + 1;
div1 = lgm_get_clk_val(ddiv->membase, ddiv->reg,
ddiv->shift1, ddiv->width1) + 1;
exdiv = lgm_get_clk_val(ddiv->membase, ddiv->reg,
ddiv->shift2, ddiv->width2);
spin_unlock_irqrestore(&ddiv->lock, flags);
prate = (u64)parent_rate;
do_div(prate, div0);
do_div(prate, div1);
if (exdiv) {
do_div(prate, ddiv->div);
prate *= ddiv->mult;
}
return prate;
}
static int lgm_clk_ddiv_enable(struct clk_hw *hw)
{
struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
unsigned long flags;
spin_lock_irqsave(&ddiv->lock, flags);
lgm_set_clk_val(ddiv->membase, ddiv->reg, ddiv->shift_gate,
ddiv->width_gate, 1);
spin_unlock_irqrestore(&ddiv->lock, flags);
return 0;
}
static void lgm_clk_ddiv_disable(struct clk_hw *hw)
{
struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
unsigned long flags;
spin_lock_irqsave(&ddiv->lock, flags);
lgm_set_clk_val(ddiv->membase, ddiv->reg, ddiv->shift_gate,
ddiv->width_gate, 0);
spin_unlock_irqrestore(&ddiv->lock, flags);
}
static int
lgm_clk_get_ddiv_val(u32 div, u32 *ddiv1, u32 *ddiv2)
{
u32 idx, temp;
*ddiv1 = 1;
*ddiv2 = 1;
if (div > MAX_DIVIDER_VAL)
div = MAX_DIVIDER_VAL;
if (div > 1) {
for (idx = 2; idx <= MAX_DDIV_REG; idx++) {
temp = DIV_ROUND_UP_ULL((u64)div, idx);
if (div % idx == 0 && temp <= MAX_DDIV_REG)
break;
}
if (idx > MAX_DDIV_REG)
return -EINVAL;
*ddiv1 = temp;
*ddiv2 = idx;
}
return 0;
}
static int
lgm_clk_ddiv_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long prate)
{
struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
u32 div, ddiv1, ddiv2;
unsigned long flags;
div = DIV_ROUND_CLOSEST_ULL((u64)prate, rate);
spin_lock_irqsave(&ddiv->lock, flags);
if (lgm_get_clk_val(ddiv->membase, ddiv->reg, ddiv->shift2, 1)) {
div = DIV_ROUND_CLOSEST_ULL((u64)div, 5);
div = div * 2;
}
if (div <= 0) {
spin_unlock_irqrestore(&ddiv->lock, flags);
return -EINVAL;
}
if (lgm_clk_get_ddiv_val(div, &ddiv1, &ddiv2)) {
spin_unlock_irqrestore(&ddiv->lock, flags);
return -EINVAL;
}
lgm_set_clk_val(ddiv->membase, ddiv->reg, ddiv->shift0, ddiv->width0,
ddiv1 - 1);
lgm_set_clk_val(ddiv->membase, ddiv->reg, ddiv->shift1, ddiv->width1,
ddiv2 - 1);
spin_unlock_irqrestore(&ddiv->lock, flags);
return 0;
}
static long
lgm_clk_ddiv_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
u32 div, ddiv1, ddiv2;
unsigned long flags;
u64 rate64 = rate;
div = DIV_ROUND_CLOSEST_ULL((u64)*prate, rate);
/* if predivide bit is enabled, modify div by factor of 2.5 */
spin_lock_irqsave(&ddiv->lock, flags);
if (lgm_get_clk_val(ddiv->membase, ddiv->reg, ddiv->shift2, 1)) {
div = div * 2;
div = DIV_ROUND_CLOSEST_ULL((u64)div, 5);
}
if (div <= 0) {
spin_unlock_irqrestore(&ddiv->lock, flags);
return *prate;
}
if (lgm_clk_get_ddiv_val(div, &ddiv1, &ddiv2) != 0) {
if (lgm_clk_get_ddiv_val(div + 1, &ddiv1, &ddiv2) != 0) {
spin_unlock_irqrestore(&ddiv->lock, flags);
return -EINVAL;
}
}
rate64 = *prate;
do_div(rate64, ddiv1);
do_div(rate64, ddiv2);
/* if predivide bit is enabled, modify rounded rate by factor of 2.5 */
if (lgm_get_clk_val(ddiv->membase, ddiv->reg, ddiv->shift2, 1)) {
rate64 = rate64 * 2;
rate64 = DIV_ROUND_CLOSEST_ULL(rate64, 5);
}
spin_unlock_irqrestore(&ddiv->lock, flags);
return rate64;
}
static const struct clk_ops lgm_clk_ddiv_ops = {
.recalc_rate = lgm_clk_ddiv_recalc_rate,
.enable = lgm_clk_ddiv_enable,
.disable = lgm_clk_ddiv_disable,
.set_rate = lgm_clk_ddiv_set_rate,
.round_rate = lgm_clk_ddiv_round_rate,
};
int lgm_clk_register_ddiv(struct lgm_clk_provider *ctx,
const struct lgm_clk_ddiv_data *list,
unsigned int nr_clk)
{
struct device *dev = ctx->dev;
struct clk_init_data init = {};
struct lgm_clk_ddiv *ddiv;
struct clk_hw *hw;
unsigned int idx;
int ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
ddiv = NULL;
ddiv = devm_kzalloc(dev, sizeof(*ddiv), GFP_KERNEL);
if (!ddiv)
return -ENOMEM;
memset(&init, 0, sizeof(init));
init.name = list->name;
init.ops = &lgm_clk_ddiv_ops;
init.flags = list->flags;
init.parent_data = list->parent_data;
init.num_parents = 1;
ddiv->membase = ctx->membase;
ddiv->lock = ctx->lock;
ddiv->reg = list->reg;
ddiv->shift0 = list->shift0;
ddiv->width0 = list->width0;
ddiv->shift1 = list->shift1;
ddiv->width1 = list->width1;
ddiv->shift_gate = list->shift_gate;
ddiv->width_gate = list->width_gate;
ddiv->shift2 = list->ex_shift;
ddiv->width2 = list->ex_width;
ddiv->flags = list->div_flags;
ddiv->mult = 2;
ddiv->div = 5;
ddiv->hw.init = &init;
hw = &ddiv->hw;
ret = clk_hw_register(dev, hw);
if (ret) {
dev_err(dev, "register clk: %s failed!\n", list->name);
return ret;
}
ctx->clk_data.hws[list->id] = hw;
}
return 0;
}

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drivers/clk/x86/clk-cgu.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright(c) 2020 Intel Corporation.
* Zhu YiXin <yixin.zhu@intel.com>
* Rahul Tanwar <rahul.tanwar@intel.com>
*/
#ifndef __CLK_CGU_H
#define __CLK_CGU_H
#include <linux/io.h>
struct lgm_clk_mux {
struct clk_hw hw;
void __iomem *membase;
unsigned int reg;
u8 shift;
u8 width;
unsigned long flags;
spinlock_t lock;
};
struct lgm_clk_divider {
struct clk_hw hw;
void __iomem *membase;
unsigned int reg;
u8 shift;
u8 width;
u8 shift_gate;
u8 width_gate;
unsigned long flags;
const struct clk_div_table *table;
spinlock_t lock;
};
struct lgm_clk_ddiv {
struct clk_hw hw;
void __iomem *membase;
unsigned int reg;
u8 shift0;
u8 width0;
u8 shift1;
u8 width1;
u8 shift2;
u8 width2;
u8 shift_gate;
u8 width_gate;
unsigned int mult;
unsigned int div;
unsigned long flags;
spinlock_t lock;
};
struct lgm_clk_gate {
struct clk_hw hw;
void __iomem *membase;
unsigned int reg;
u8 shift;
unsigned long flags;
spinlock_t lock;
};
enum lgm_clk_type {
CLK_TYPE_FIXED,
CLK_TYPE_MUX,
CLK_TYPE_DIVIDER,
CLK_TYPE_FIXED_FACTOR,
CLK_TYPE_GATE,
CLK_TYPE_NONE,
};
/**
* struct lgm_clk_provider
* @membase: IO mem base address for CGU.
* @np: device node
* @dev: device
* @clk_data: array of hw clocks and clk number.
*/
struct lgm_clk_provider {
void __iomem *membase;
struct device_node *np;
struct device *dev;
struct clk_hw_onecell_data clk_data;
spinlock_t lock;
};
enum pll_type {
TYPE_ROPLL,
TYPE_LJPLL,
TYPE_NONE,
};
struct lgm_clk_pll {
struct clk_hw hw;
void __iomem *membase;
unsigned int reg;
unsigned long flags;
enum pll_type type;
spinlock_t lock;
};
/**
* struct lgm_pll_clk_data
* @id: platform specific id of the clock.
* @name: name of this pll clock.
* @parent_data: parent clock data.
* @num_parents: number of parents.
* @flags: optional flags for basic clock.
* @type: platform type of pll.
* @reg: offset of the register.
*/
struct lgm_pll_clk_data {
unsigned int id;
const char *name;
const struct clk_parent_data *parent_data;
u8 num_parents;
unsigned long flags;
enum pll_type type;
int reg;
};
#define LGM_PLL(_id, _name, _pdata, _flags, \
_reg, _type) \
{ \
.id = _id, \
.name = _name, \
.parent_data = _pdata, \
.num_parents = ARRAY_SIZE(_pdata), \
.flags = _flags, \
.reg = _reg, \
.type = _type, \
}
struct lgm_clk_ddiv_data {
unsigned int id;
const char *name;
const struct clk_parent_data *parent_data;
u8 flags;
unsigned long div_flags;
unsigned int reg;
u8 shift0;
u8 width0;
u8 shift1;
u8 width1;
u8 shift_gate;
u8 width_gate;
u8 ex_shift;
u8 ex_width;
};
#define LGM_DDIV(_id, _name, _pname, _flags, _reg, \
_shft0, _wdth0, _shft1, _wdth1, \
_shft_gate, _wdth_gate, _xshft, _df) \
{ \
.id = _id, \
.name = _name, \
.parent_data = &(const struct clk_parent_data){ \
.fw_name = _pname, \
.name = _pname, \
}, \
.flags = _flags, \
.reg = _reg, \
.shift0 = _shft0, \
.width0 = _wdth0, \
.shift1 = _shft1, \
.width1 = _wdth1, \
.shift_gate = _shft_gate, \
.width_gate = _wdth_gate, \
.ex_shift = _xshft, \
.ex_width = 1, \
.div_flags = _df, \
}
struct lgm_clk_branch {
unsigned int id;
enum lgm_clk_type type;
const char *name;
const struct clk_parent_data *parent_data;
u8 num_parents;
unsigned long flags;
unsigned int mux_off;
u8 mux_shift;
u8 mux_width;
unsigned long mux_flags;
unsigned int mux_val;
unsigned int div_off;
u8 div_shift;
u8 div_width;
u8 div_shift_gate;
u8 div_width_gate;
unsigned long div_flags;
unsigned int div_val;
const struct clk_div_table *div_table;
unsigned int gate_off;
u8 gate_shift;
unsigned long gate_flags;
unsigned int gate_val;
unsigned int mult;
unsigned int div;
};
/* clock flags definition */
#define CLOCK_FLAG_VAL_INIT BIT(16)
#define MUX_CLK_SW BIT(17)
#define LGM_MUX(_id, _name, _pdata, _f, _reg, \
_shift, _width, _cf, _v) \
{ \
.id = _id, \
.type = CLK_TYPE_MUX, \
.name = _name, \
.parent_data = _pdata, \
.num_parents = ARRAY_SIZE(_pdata), \
.flags = _f, \
.mux_off = _reg, \
.mux_shift = _shift, \
.mux_width = _width, \
.mux_flags = _cf, \
.mux_val = _v, \
}
#define LGM_DIV(_id, _name, _pname, _f, _reg, _shift, _width, \
_shift_gate, _width_gate, _cf, _v, _dtable) \
{ \
.id = _id, \
.type = CLK_TYPE_DIVIDER, \
.name = _name, \
.parent_data = &(const struct clk_parent_data){ \
.fw_name = _pname, \
.name = _pname, \
}, \
.num_parents = 1, \
.flags = _f, \
.div_off = _reg, \
.div_shift = _shift, \
.div_width = _width, \
.div_shift_gate = _shift_gate, \
.div_width_gate = _width_gate, \
.div_flags = _cf, \
.div_val = _v, \
.div_table = _dtable, \
}
#define LGM_GATE(_id, _name, _pname, _f, _reg, \
_shift, _cf, _v) \
{ \
.id = _id, \
.type = CLK_TYPE_GATE, \
.name = _name, \
.parent_data = &(const struct clk_parent_data){ \
.fw_name = _pname, \
.name = _pname, \
}, \
.num_parents = !_pname ? 0 : 1, \
.flags = _f, \
.gate_off = _reg, \
.gate_shift = _shift, \
.gate_flags = _cf, \
.gate_val = _v, \
}
#define LGM_FIXED(_id, _name, _pname, _f, _reg, \
_shift, _width, _cf, _freq, _v) \
{ \
.id = _id, \
.type = CLK_TYPE_FIXED, \
.name = _name, \
.parent_data = &(const struct clk_parent_data){ \
.fw_name = _pname, \
.name = _pname, \
}, \
.num_parents = !_pname ? 0 : 1, \
.flags = _f, \
.div_off = _reg, \
.div_shift = _shift, \
.div_width = _width, \
.div_flags = _cf, \
.div_val = _v, \
.mux_flags = _freq, \
}
#define LGM_FIXED_FACTOR(_id, _name, _pname, _f, _reg, \
_shift, _width, _cf, _v, _m, _d) \
{ \
.id = _id, \
.type = CLK_TYPE_FIXED_FACTOR, \
.name = _name, \
.parent_data = &(const struct clk_parent_data){ \
.fw_name = _pname, \
.name = _pname, \
}, \
.num_parents = 1, \
.flags = _f, \
.div_off = _reg, \
.div_shift = _shift, \
.div_width = _width, \
.div_flags = _cf, \
.div_val = _v, \
.mult = _m, \
.div = _d, \
}
static inline void lgm_set_clk_val(void __iomem *membase, u32 reg,
u8 shift, u8 width, u32 set_val)
{
u32 mask = (GENMASK(width - 1, 0) << shift);
u32 regval;
regval = readl(membase + reg);
regval = (regval & ~mask) | ((set_val << shift) & mask);
writel(regval, membase + reg);
}
static inline u32 lgm_get_clk_val(void __iomem *membase, u32 reg,
u8 shift, u8 width)
{
u32 mask = (GENMASK(width - 1, 0) << shift);
u32 val;
val = readl(membase + reg);
val = (val & mask) >> shift;
return val;
}
int lgm_clk_register_branches(struct lgm_clk_provider *ctx,
const struct lgm_clk_branch *list,
unsigned int nr_clk);
int lgm_clk_register_plls(struct lgm_clk_provider *ctx,
const struct lgm_pll_clk_data *list,
unsigned int nr_clk);
int lgm_clk_register_ddiv(struct lgm_clk_provider *ctx,
const struct lgm_clk_ddiv_data *list,
unsigned int nr_clk);
#endif /* __CLK_CGU_H */

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drivers/clk/x86/clk-lgm.c Normal file
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 Intel Corporation.
* Zhu YiXin <yixin.zhu@intel.com>
* Rahul Tanwar <rahul.tanwar@intel.com>
*/
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <dt-bindings/clock/intel,lgm-clk.h>
#include "clk-cgu.h"
#define PLL_DIV_WIDTH 4
#define PLL_DDIV_WIDTH 3
/* Gate0 clock shift */
#define G_C55_SHIFT 7
#define G_QSPI_SHIFT 9
#define G_EIP197_SHIFT 11
#define G_VAULT130_SHIFT 12
#define G_TOE_SHIFT 13
#define G_SDXC_SHIFT 14
#define G_EMMC_SHIFT 15
#define G_SPIDBG_SHIFT 17
#define G_DMA3_SHIFT 28
/* Gate1 clock shift */
#define G_DMA0_SHIFT 0
#define G_LEDC0_SHIFT 1
#define G_LEDC1_SHIFT 2
#define G_I2S0_SHIFT 3
#define G_I2S1_SHIFT 4
#define G_EBU_SHIFT 5
#define G_PWM_SHIFT 6
#define G_I2C0_SHIFT 7
#define G_I2C1_SHIFT 8
#define G_I2C2_SHIFT 9
#define G_I2C3_SHIFT 10
#define G_SSC0_SHIFT 12
#define G_SSC1_SHIFT 13
#define G_SSC2_SHIFT 14
#define G_SSC3_SHIFT 15
#define G_GPTC0_SHIFT 17
#define G_GPTC1_SHIFT 18
#define G_GPTC2_SHIFT 19
#define G_GPTC3_SHIFT 20
#define G_ASC0_SHIFT 22
#define G_ASC1_SHIFT 23
#define G_ASC2_SHIFT 24
#define G_ASC3_SHIFT 25
#define G_PCM0_SHIFT 27
#define G_PCM1_SHIFT 28
#define G_PCM2_SHIFT 29
/* Gate2 clock shift */
#define G_PCIE10_SHIFT 1
#define G_PCIE11_SHIFT 2
#define G_PCIE30_SHIFT 3
#define G_PCIE31_SHIFT 4
#define G_PCIE20_SHIFT 5
#define G_PCIE21_SHIFT 6
#define G_PCIE40_SHIFT 7
#define G_PCIE41_SHIFT 8
#define G_XPCS0_SHIFT 10
#define G_XPCS1_SHIFT 11
#define G_XPCS2_SHIFT 12
#define G_XPCS3_SHIFT 13
#define G_SATA0_SHIFT 14
#define G_SATA1_SHIFT 15
#define G_SATA2_SHIFT 16
#define G_SATA3_SHIFT 17
/* Gate3 clock shift */
#define G_ARCEM4_SHIFT 0
#define G_IDMAR1_SHIFT 2
#define G_IDMAT0_SHIFT 3
#define G_IDMAT1_SHIFT 4
#define G_IDMAT2_SHIFT 5
#define G_PPV4_SHIFT 8
#define G_GSWIPO_SHIFT 9
#define G_CQEM_SHIFT 10
#define G_XPCS5_SHIFT 14
#define G_USB1_SHIFT 25
#define G_USB2_SHIFT 26
/* Register definition */
#define CGU_PLL0CZ_CFG0 0x000
#define CGU_PLL0CM0_CFG0 0x020
#define CGU_PLL0CM1_CFG0 0x040
#define CGU_PLL0B_CFG0 0x060
#define CGU_PLL1_CFG0 0x080
#define CGU_PLL2_CFG0 0x0A0
#define CGU_PLLPP_CFG0 0x0C0
#define CGU_LJPLL3_CFG0 0x0E0
#define CGU_LJPLL4_CFG0 0x100
#define CGU_C55_PCMCR 0x18C
#define CGU_PCMCR 0x190
#define CGU_IF_CLK1 0x1A0
#define CGU_IF_CLK2 0x1A4
#define CGU_GATE0 0x300
#define CGU_GATE1 0x310
#define CGU_GATE2 0x320
#define CGU_GATE3 0x310
#define PLL_DIV(x) ((x) + 0x04)
#define PLL_SSC(x) ((x) + 0x10)
#define CLK_NR_CLKS (LGM_GCLK_USB2 + 1)
/*
* Below table defines the pair's of regval & effective dividers.
* It's more efficient to provide an explicit table due to non-linear
* relation between values.
*/
static const struct clk_div_table pll_div[] = {
{ .val = 0, .div = 1 },
{ .val = 1, .div = 2 },
{ .val = 2, .div = 3 },
{ .val = 3, .div = 4 },
{ .val = 4, .div = 5 },
{ .val = 5, .div = 6 },
{ .val = 6, .div = 8 },
{ .val = 7, .div = 10 },
{ .val = 8, .div = 12 },
{ .val = 9, .div = 16 },
{ .val = 10, .div = 20 },
{ .val = 11, .div = 24 },
{ .val = 12, .div = 32 },
{ .val = 13, .div = 40 },
{ .val = 14, .div = 48 },
{ .val = 15, .div = 64 },
{}
};
static const struct clk_div_table dcl_div[] = {
{ .val = 0, .div = 6 },
{ .val = 1, .div = 12 },
{ .val = 2, .div = 24 },
{ .val = 3, .div = 32 },
{ .val = 4, .div = 48 },
{ .val = 5, .div = 96 },
{}
};
static const struct clk_parent_data pll_p[] = {
{ .fw_name = "osc", .name = "osc" },
};
static const struct clk_parent_data pllcm_p[] = {
{ .fw_name = "cpu_cm", .name = "cpu_cm" },
};
static const struct clk_parent_data emmc_p[] = {
{ .fw_name = "emmc4", .name = "emmc4" },
{ .fw_name = "noc4", .name = "noc4" },
};
static const struct clk_parent_data sdxc_p[] = {
{ .fw_name = "sdxc3", .name = "sdxc3" },
{ .fw_name = "sdxc2", .name = "sdxc2" },
};
static const struct clk_parent_data pcm_p[] = {
{ .fw_name = "v_docsis", .name = "v_docsis" },
{ .fw_name = "dcl", .name = "dcl" },
};
static const struct clk_parent_data cbphy_p[] = {
{ .fw_name = "dd_serdes", .name = "dd_serdes" },
{ .fw_name = "dd_pcie", .name = "dd_pcie" },
};
static const struct lgm_pll_clk_data lgm_pll_clks[] = {
LGM_PLL(LGM_CLK_PLL0CZ, "pll0cz", pll_p, CLK_IGNORE_UNUSED,
CGU_PLL0CZ_CFG0, TYPE_ROPLL),
LGM_PLL(LGM_CLK_PLL0CM0, "pll0cm0", pllcm_p, CLK_IGNORE_UNUSED,
CGU_PLL0CM0_CFG0, TYPE_ROPLL),
LGM_PLL(LGM_CLK_PLL0CM1, "pll0cm1", pllcm_p, CLK_IGNORE_UNUSED,
CGU_PLL0CM1_CFG0, TYPE_ROPLL),
LGM_PLL(LGM_CLK_PLL0B, "pll0b", pll_p, CLK_IGNORE_UNUSED,
CGU_PLL0B_CFG0, TYPE_ROPLL),
LGM_PLL(LGM_CLK_PLL1, "pll1", pll_p, 0, CGU_PLL1_CFG0, TYPE_ROPLL),
LGM_PLL(LGM_CLK_PLL2, "pll2", pll_p, CLK_IGNORE_UNUSED,
CGU_PLL2_CFG0, TYPE_ROPLL),
LGM_PLL(LGM_CLK_PLLPP, "pllpp", pll_p, 0, CGU_PLLPP_CFG0, TYPE_ROPLL),
LGM_PLL(LGM_CLK_LJPLL3, "ljpll3", pll_p, 0, CGU_LJPLL3_CFG0, TYPE_LJPLL),
LGM_PLL(LGM_CLK_LJPLL4, "ljpll4", pll_p, 0, CGU_LJPLL4_CFG0, TYPE_LJPLL),
};
static const struct lgm_clk_branch lgm_branch_clks[] = {
LGM_DIV(LGM_CLK_PP_HW, "pp_hw", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
0, PLL_DIV_WIDTH, 24, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_PP_UC, "pp_uc", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
4, PLL_DIV_WIDTH, 25, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_PP_FXD, "pp_fxd", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
8, PLL_DIV_WIDTH, 26, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_PP_TBM, "pp_tbm", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
12, PLL_DIV_WIDTH, 27, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_DDR, "ddr", "pll2", CLK_IGNORE_UNUSED,
PLL_DIV(CGU_PLL2_CFG0), 0, PLL_DIV_WIDTH, 24, 1, 0, 0,
pll_div),
LGM_DIV(LGM_CLK_CM, "cpu_cm", "pll0cz", 0, PLL_DIV(CGU_PLL0CZ_CFG0),
0, PLL_DIV_WIDTH, 24, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_IC, "cpu_ic", "pll0cz", CLK_IGNORE_UNUSED,
PLL_DIV(CGU_PLL0CZ_CFG0), 4, PLL_DIV_WIDTH, 25,
1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_SDXC3, "sdxc3", "pll0cz", 0, PLL_DIV(CGU_PLL0CZ_CFG0),
8, PLL_DIV_WIDTH, 26, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_CPU0, "cm0", "pll0cm0",
CLK_IGNORE_UNUSED, PLL_DIV(CGU_PLL0CM0_CFG0),
0, PLL_DIV_WIDTH, 24, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_CPU1, "cm1", "pll0cm1",
CLK_IGNORE_UNUSED, PLL_DIV(CGU_PLL0CM1_CFG0),
0, PLL_DIV_WIDTH, 24, 1, 0, 0, pll_div),
/*
* Marking ngi_clk (next generation interconnect) and noc_clk
* (network on chip peripheral clk) as critical clocks because
* these are shared parent clock sources for many different
* peripherals.
*/
LGM_DIV(LGM_CLK_NGI, "ngi", "pll0b",
(CLK_IGNORE_UNUSED|CLK_IS_CRITICAL), PLL_DIV(CGU_PLL0B_CFG0),
0, PLL_DIV_WIDTH, 24, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_NOC4, "noc4", "pll0b",
(CLK_IGNORE_UNUSED|CLK_IS_CRITICAL), PLL_DIV(CGU_PLL0B_CFG0),
4, PLL_DIV_WIDTH, 25, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_SW, "switch", "pll0b", 0, PLL_DIV(CGU_PLL0B_CFG0),
8, PLL_DIV_WIDTH, 26, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_QSPI, "qspi", "pll0b", 0, PLL_DIV(CGU_PLL0B_CFG0),
12, PLL_DIV_WIDTH, 27, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_CT, "v_ct", "pll1", 0, PLL_DIV(CGU_PLL1_CFG0),
0, PLL_DIV_WIDTH, 24, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_DSP, "v_dsp", "pll1", 0, PLL_DIV(CGU_PLL1_CFG0),
8, PLL_DIV_WIDTH, 26, 1, 0, 0, pll_div),
LGM_DIV(LGM_CLK_VIF, "v_ifclk", "pll1", 0, PLL_DIV(CGU_PLL1_CFG0),
12, PLL_DIV_WIDTH, 27, 1, 0, 0, pll_div),
LGM_FIXED_FACTOR(LGM_CLK_EMMC4, "emmc4", "sdxc3", 0, 0,
0, 0, 0, 0, 1, 4),
LGM_FIXED_FACTOR(LGM_CLK_SDXC2, "sdxc2", "noc4", 0, 0,
0, 0, 0, 0, 1, 4),
LGM_MUX(LGM_CLK_EMMC, "emmc", emmc_p, 0, CGU_IF_CLK1,
0, 1, CLK_MUX_ROUND_CLOSEST, 0),
LGM_MUX(LGM_CLK_SDXC, "sdxc", sdxc_p, 0, CGU_IF_CLK1,
1, 1, CLK_MUX_ROUND_CLOSEST, 0),
LGM_FIXED(LGM_CLK_OSC, "osc", NULL, 0, 0, 0, 0, 0, 40000000, 0),
LGM_FIXED(LGM_CLK_SLIC, "slic", NULL, 0, CGU_IF_CLK1,
8, 2, CLOCK_FLAG_VAL_INIT, 8192000, 2),
LGM_FIXED(LGM_CLK_DOCSIS, "v_docsis", NULL, 0, 0, 0, 0, 0, 16000000, 0),
LGM_DIV(LGM_CLK_DCL, "dcl", "v_ifclk", 0, CGU_PCMCR,
25, 3, 0, 0, 0, 0, dcl_div),
LGM_MUX(LGM_CLK_PCM, "pcm", pcm_p, 0, CGU_C55_PCMCR,
0, 1, CLK_MUX_ROUND_CLOSEST, 0),
LGM_FIXED_FACTOR(LGM_CLK_DDR_PHY, "ddr_phy", "ddr",
CLK_IGNORE_UNUSED, 0,
0, 0, 0, 0, 2, 1),
LGM_FIXED_FACTOR(LGM_CLK_PONDEF, "pondef", "dd_pool",
CLK_SET_RATE_PARENT, 0, 0, 0, 0, 0, 1, 2),
LGM_MUX(LGM_CLK_CBPHY0, "cbphy0", cbphy_p, 0, 0,
0, 0, MUX_CLK_SW | CLK_MUX_ROUND_CLOSEST, 0),
LGM_MUX(LGM_CLK_CBPHY1, "cbphy1", cbphy_p, 0, 0,
0, 0, MUX_CLK_SW | CLK_MUX_ROUND_CLOSEST, 0),
LGM_MUX(LGM_CLK_CBPHY2, "cbphy2", cbphy_p, 0, 0,
0, 0, MUX_CLK_SW | CLK_MUX_ROUND_CLOSEST, 0),
LGM_MUX(LGM_CLK_CBPHY3, "cbphy3", cbphy_p, 0, 0,
0, 0, MUX_CLK_SW | CLK_MUX_ROUND_CLOSEST, 0),
LGM_GATE(LGM_GCLK_C55, "g_c55", NULL, 0, CGU_GATE0,
G_C55_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_QSPI, "g_qspi", "qspi", 0, CGU_GATE0,
G_QSPI_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_EIP197, "g_eip197", NULL, 0, CGU_GATE0,
G_EIP197_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_VAULT, "g_vault130", NULL, 0, CGU_GATE0,
G_VAULT130_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_TOE, "g_toe", NULL, 0, CGU_GATE0,
G_TOE_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SDXC, "g_sdxc", "sdxc", 0, CGU_GATE0,
G_SDXC_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_EMMC, "g_emmc", "emmc", 0, CGU_GATE0,
G_EMMC_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SPI_DBG, "g_spidbg", NULL, 0, CGU_GATE0,
G_SPIDBG_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_DMA3, "g_dma3", NULL, 0, CGU_GATE0,
G_DMA3_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_DMA0, "g_dma0", NULL, 0, CGU_GATE1,
G_DMA0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_LEDC0, "g_ledc0", NULL, 0, CGU_GATE1,
G_LEDC0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_LEDC1, "g_ledc1", NULL, 0, CGU_GATE1,
G_LEDC1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_I2S0, "g_i2s0", NULL, 0, CGU_GATE1,
G_I2S0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_I2S1, "g_i2s1", NULL, 0, CGU_GATE1,
G_I2S1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_EBU, "g_ebu", NULL, 0, CGU_GATE1,
G_EBU_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PWM, "g_pwm", NULL, 0, CGU_GATE1,
G_PWM_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_I2C0, "g_i2c0", NULL, 0, CGU_GATE1,
G_I2C0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_I2C1, "g_i2c1", NULL, 0, CGU_GATE1,
G_I2C1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_I2C2, "g_i2c2", NULL, 0, CGU_GATE1,
G_I2C2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_I2C3, "g_i2c3", NULL, 0, CGU_GATE1,
G_I2C3_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SSC0, "g_ssc0", "noc4", 0, CGU_GATE1,
G_SSC0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SSC1, "g_ssc1", "noc4", 0, CGU_GATE1,
G_SSC1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SSC2, "g_ssc2", "noc4", 0, CGU_GATE1,
G_SSC2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SSC3, "g_ssc3", "noc4", 0, CGU_GATE1,
G_SSC3_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_GPTC0, "g_gptc0", "noc4", 0, CGU_GATE1,
G_GPTC0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_GPTC1, "g_gptc1", "noc4", 0, CGU_GATE1,
G_GPTC1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_GPTC2, "g_gptc2", "noc4", 0, CGU_GATE1,
G_GPTC2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_GPTC3, "g_gptc3", "osc", 0, CGU_GATE1,
G_GPTC3_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_ASC0, "g_asc0", "noc4", 0, CGU_GATE1,
G_ASC0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_ASC1, "g_asc1", "noc4", 0, CGU_GATE1,
G_ASC1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_ASC2, "g_asc2", "noc4", 0, CGU_GATE1,
G_ASC2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_ASC3, "g_asc3", "osc", 0, CGU_GATE1,
G_ASC3_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCM0, "g_pcm0", NULL, 0, CGU_GATE1,
G_PCM0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCM1, "g_pcm1", NULL, 0, CGU_GATE1,
G_PCM1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCM2, "g_pcm2", NULL, 0, CGU_GATE1,
G_PCM2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE10, "g_pcie10", NULL, 0, CGU_GATE2,
G_PCIE10_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE11, "g_pcie11", NULL, 0, CGU_GATE2,
G_PCIE11_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE30, "g_pcie30", NULL, 0, CGU_GATE2,
G_PCIE30_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE31, "g_pcie31", NULL, 0, CGU_GATE2,
G_PCIE31_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE20, "g_pcie20", NULL, 0, CGU_GATE2,
G_PCIE20_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE21, "g_pcie21", NULL, 0, CGU_GATE2,
G_PCIE21_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE40, "g_pcie40", NULL, 0, CGU_GATE2,
G_PCIE40_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PCIE41, "g_pcie41", NULL, 0, CGU_GATE2,
G_PCIE41_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_XPCS0, "g_xpcs0", NULL, 0, CGU_GATE2,
G_XPCS0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_XPCS1, "g_xpcs1", NULL, 0, CGU_GATE2,
G_XPCS1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_XPCS2, "g_xpcs2", NULL, 0, CGU_GATE2,
G_XPCS2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_XPCS3, "g_xpcs3", NULL, 0, CGU_GATE2,
G_XPCS3_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SATA0, "g_sata0", NULL, 0, CGU_GATE2,
G_SATA0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SATA1, "g_sata1", NULL, 0, CGU_GATE2,
G_SATA1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SATA2, "g_sata2", NULL, 0, CGU_GATE2,
G_SATA2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_SATA3, "g_sata3", NULL, 0, CGU_GATE2,
G_SATA3_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_ARCEM4, "g_arcem4", NULL, 0, CGU_GATE3,
G_ARCEM4_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_IDMAR1, "g_idmar1", NULL, 0, CGU_GATE3,
G_IDMAR1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_IDMAT0, "g_idmat0", NULL, 0, CGU_GATE3,
G_IDMAT0_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_IDMAT1, "g_idmat1", NULL, 0, CGU_GATE3,
G_IDMAT1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_IDMAT2, "g_idmat2", NULL, 0, CGU_GATE3,
G_IDMAT2_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_PPV4, "g_ppv4", NULL, 0, CGU_GATE3,
G_PPV4_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_GSWIPO, "g_gswipo", "switch", 0, CGU_GATE3,
G_GSWIPO_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_CQEM, "g_cqem", "switch", 0, CGU_GATE3,
G_CQEM_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_XPCS5, "g_xpcs5", NULL, 0, CGU_GATE3,
G_XPCS5_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_USB1, "g_usb1", NULL, 0, CGU_GATE3,
G_USB1_SHIFT, 0, 0),
LGM_GATE(LGM_GCLK_USB2, "g_usb2", NULL, 0, CGU_GATE3,
G_USB2_SHIFT, 0, 0),
};
static const struct lgm_clk_ddiv_data lgm_ddiv_clks[] = {
LGM_DDIV(LGM_CLK_CML, "dd_cml", "ljpll3", 0,
PLL_DIV(CGU_LJPLL3_CFG0), 0, PLL_DDIV_WIDTH,
3, PLL_DDIV_WIDTH, 24, 1, 29, 0),
LGM_DDIV(LGM_CLK_SERDES, "dd_serdes", "ljpll3", 0,
PLL_DIV(CGU_LJPLL3_CFG0), 6, PLL_DDIV_WIDTH,
9, PLL_DDIV_WIDTH, 25, 1, 28, 0),
LGM_DDIV(LGM_CLK_POOL, "dd_pool", "ljpll3", 0,
PLL_DIV(CGU_LJPLL3_CFG0), 12, PLL_DDIV_WIDTH,
15, PLL_DDIV_WIDTH, 26, 1, 28, 0),
LGM_DDIV(LGM_CLK_PTP, "dd_ptp", "ljpll3", 0,
PLL_DIV(CGU_LJPLL3_CFG0), 18, PLL_DDIV_WIDTH,
21, PLL_DDIV_WIDTH, 27, 1, 28, 0),
LGM_DDIV(LGM_CLK_PCIE, "dd_pcie", "ljpll4", 0,
PLL_DIV(CGU_LJPLL4_CFG0), 0, PLL_DDIV_WIDTH,
3, PLL_DDIV_WIDTH, 24, 1, 29, 0),
};
static int lgm_cgu_probe(struct platform_device *pdev)
{
struct lgm_clk_provider *ctx;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
int ret;
ctx = devm_kzalloc(dev, struct_size(ctx, clk_data.hws, CLK_NR_CLKS),
GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->clk_data.num = CLK_NR_CLKS;
ctx->membase = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(ctx->membase))
return PTR_ERR(ctx->membase);
ctx->np = np;
ctx->dev = dev;
spin_lock_init(&ctx->lock);
ret = lgm_clk_register_plls(ctx, lgm_pll_clks,
ARRAY_SIZE(lgm_pll_clks));
if (ret)
return ret;
ret = lgm_clk_register_branches(ctx, lgm_branch_clks,
ARRAY_SIZE(lgm_branch_clks));
if (ret)
return ret;
ret = lgm_clk_register_ddiv(ctx, lgm_ddiv_clks,
ARRAY_SIZE(lgm_ddiv_clks));
if (ret)
return ret;
return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
&ctx->clk_data);
}
static const struct of_device_id of_lgm_cgu_match[] = {
{ .compatible = "intel,cgu-lgm" },
{}
};
static struct platform_driver lgm_cgu_driver = {
.probe = lgm_cgu_probe,
.driver = {
.name = "cgu-lgm",
.of_match_table = of_lgm_cgu_match,
},
};
builtin_platform_driver(lgm_cgu_driver);