forked from Minki/linux
CLK: TI: Add DPLL clock support
The OMAP clock driver now supports DPLL clock type. This patch also adds support for DT DPLL nodes. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Tero Kristo
Mike Turquette
parent
819b4861c1
commit
f38b0dd63f
75
Documentation/devicetree/bindings/clock/ti/dpll.txt
Normal file
75
Documentation/devicetree/bindings/clock/ti/dpll.txt
Normal file
@ -0,0 +1,75 @@
|
||||
Binding for Texas Instruments DPLL clock.
|
||||
|
||||
Binding status: Unstable - ABI compatibility may be broken in the future
|
||||
|
||||
This binding uses the common clock binding[1]. It assumes a
|
||||
register-mapped DPLL with usually two selectable input clocks
|
||||
(reference clock and bypass clock), with digital phase locked
|
||||
loop logic for multiplying the input clock to a desired output
|
||||
clock. This clock also typically supports different operation
|
||||
modes (locked, low power stop etc.) This binding has several
|
||||
sub-types, which effectively result in slightly different setup
|
||||
for the actual DPLL clock.
|
||||
|
||||
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
|
||||
|
||||
Required properties:
|
||||
- compatible : shall be one of:
|
||||
"ti,omap3-dpll-clock",
|
||||
"ti,omap3-dpll-core-clock",
|
||||
"ti,omap3-dpll-per-clock",
|
||||
"ti,omap3-dpll-per-j-type-clock",
|
||||
"ti,omap4-dpll-clock",
|
||||
"ti,omap4-dpll-x2-clock",
|
||||
"ti,omap4-dpll-core-clock",
|
||||
"ti,omap4-dpll-m4xen-clock",
|
||||
"ti,omap4-dpll-j-type-clock",
|
||||
"ti,am3-dpll-no-gate-clock",
|
||||
"ti,am3-dpll-j-type-clock",
|
||||
"ti,am3-dpll-no-gate-j-type-clock",
|
||||
"ti,am3-dpll-clock",
|
||||
"ti,am3-dpll-core-clock",
|
||||
"ti,am3-dpll-x2-clock",
|
||||
|
||||
- #clock-cells : from common clock binding; shall be set to 0.
|
||||
- clocks : link phandles of parent clocks, first entry lists reference clock
|
||||
and second entry bypass clock
|
||||
- reg : offsets for the register set for controlling the DPLL.
|
||||
Registers are listed in following order:
|
||||
"control" - contains the control register base address
|
||||
"idlest" - contains the idle status register base address
|
||||
"mult-div1" - contains the multiplier / divider register base address
|
||||
"autoidle" - contains the autoidle register base address (optional)
|
||||
ti,am3-* dpll types do not have autoidle register
|
||||
|
||||
Optional properties:
|
||||
- DPLL mode setting - defining any one or more of the following overrides
|
||||
default setting.
|
||||
- ti,low-power-stop : DPLL supports low power stop mode, gating output
|
||||
- ti,low-power-bypass : DPLL output matches rate of parent bypass clock
|
||||
- ti,lock : DPLL locks in programmed rate
|
||||
|
||||
Examples:
|
||||
dpll_core_ck: dpll_core_ck@44e00490 {
|
||||
#clock-cells = <0>;
|
||||
compatible = "ti,omap4-dpll-core-clock";
|
||||
clocks = <&sys_clkin_ck>, <&sys_clkin_ck>;
|
||||
reg = <0x490>, <0x45c>, <0x488>, <0x468>;
|
||||
};
|
||||
|
||||
dpll2_ck: dpll2_ck@48004004 {
|
||||
#clock-cells = <0>;
|
||||
compatible = "ti,omap3-dpll-clock";
|
||||
clocks = <&sys_ck>, <&dpll2_fck>;
|
||||
ti,low-power-stop;
|
||||
ti,low-power-bypass;
|
||||
ti,lock;
|
||||
reg = <0x4>, <0x24>, <0x34>, <0x40>;
|
||||
};
|
||||
|
||||
dpll_core_ck: dpll_core_ck@44e00490 {
|
||||
#clock-cells = <0>;
|
||||
compatible = "ti,am3-dpll-core-clock";
|
||||
clocks = <&sys_clkin_ck>, <&sys_clkin_ck>;
|
||||
reg = <0x90>, <0x5c>, <0x68>;
|
||||
};
|
||||
@ -21,6 +21,7 @@
|
||||
|
||||
#include <linux/clkdev.h>
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/clk/ti.h>
|
||||
|
||||
struct omap_clk {
|
||||
u16 cpu;
|
||||
@ -37,7 +38,6 @@ struct omap_clk {
|
||||
}
|
||||
|
||||
struct clockdomain;
|
||||
#define to_clk_hw_omap(_hw) container_of(_hw, struct clk_hw_omap, hw)
|
||||
|
||||
#define DEFINE_STRUCT_CLK(_name, _parent_array_name, _clkops_name) \
|
||||
static struct clk _name = { \
|
||||
@ -178,141 +178,6 @@ struct clksel {
|
||||
const struct clksel_rate *rates;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct dpll_data - DPLL registers and integration data
|
||||
* @mult_div1_reg: register containing the DPLL M and N bitfields
|
||||
* @mult_mask: mask of the DPLL M bitfield in @mult_div1_reg
|
||||
* @div1_mask: mask of the DPLL N bitfield in @mult_div1_reg
|
||||
* @clk_bypass: struct clk pointer to the clock's bypass clock input
|
||||
* @clk_ref: struct clk pointer to the clock's reference clock input
|
||||
* @control_reg: register containing the DPLL mode bitfield
|
||||
* @enable_mask: mask of the DPLL mode bitfield in @control_reg
|
||||
* @last_rounded_rate: cache of the last rate result of omap2_dpll_round_rate()
|
||||
* @last_rounded_m: cache of the last M result of omap2_dpll_round_rate()
|
||||
* @last_rounded_m4xen: cache of the last M4X result of
|
||||
* omap4_dpll_regm4xen_round_rate()
|
||||
* @last_rounded_lpmode: cache of the last lpmode result of
|
||||
* omap4_dpll_lpmode_recalc()
|
||||
* @max_multiplier: maximum valid non-bypass multiplier value (actual)
|
||||
* @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
|
||||
* @min_divider: minimum valid non-bypass divider value (actual)
|
||||
* @max_divider: maximum valid non-bypass divider value (actual)
|
||||
* @modes: possible values of @enable_mask
|
||||
* @autoidle_reg: register containing the DPLL autoidle mode bitfield
|
||||
* @idlest_reg: register containing the DPLL idle status bitfield
|
||||
* @autoidle_mask: mask of the DPLL autoidle mode bitfield in @autoidle_reg
|
||||
* @freqsel_mask: mask of the DPLL jitter correction bitfield in @control_reg
|
||||
* @idlest_mask: mask of the DPLL idle status bitfield in @idlest_reg
|
||||
* @lpmode_mask: mask of the DPLL low-power mode bitfield in @control_reg
|
||||
* @m4xen_mask: mask of the DPLL M4X multiplier bitfield in @control_reg
|
||||
* @auto_recal_bit: bitshift of the driftguard enable bit in @control_reg
|
||||
* @recal_en_bit: bitshift of the PRM_IRQENABLE_* bit for recalibration IRQs
|
||||
* @recal_st_bit: bitshift of the PRM_IRQSTATUS_* bit for recalibration IRQs
|
||||
* @flags: DPLL type/features (see below)
|
||||
*
|
||||
* Possible values for @flags:
|
||||
* DPLL_J_TYPE: "J-type DPLL" (only some 36xx, 4xxx DPLLs)
|
||||
*
|
||||
* @freqsel_mask is only used on the OMAP34xx family and AM35xx.
|
||||
*
|
||||
* XXX Some DPLLs have multiple bypass inputs, so it's not technically
|
||||
* correct to only have one @clk_bypass pointer.
|
||||
*
|
||||
* XXX The runtime-variable fields (@last_rounded_rate, @last_rounded_m,
|
||||
* @last_rounded_n) should be separated from the runtime-fixed fields
|
||||
* and placed into a different structure, so that the runtime-fixed data
|
||||
* can be placed into read-only space.
|
||||
*/
|
||||
struct dpll_data {
|
||||
void __iomem *mult_div1_reg;
|
||||
u32 mult_mask;
|
||||
u32 div1_mask;
|
||||
struct clk *clk_bypass;
|
||||
struct clk *clk_ref;
|
||||
void __iomem *control_reg;
|
||||
u32 enable_mask;
|
||||
unsigned long last_rounded_rate;
|
||||
u16 last_rounded_m;
|
||||
u8 last_rounded_m4xen;
|
||||
u8 last_rounded_lpmode;
|
||||
u16 max_multiplier;
|
||||
u8 last_rounded_n;
|
||||
u8 min_divider;
|
||||
u16 max_divider;
|
||||
u8 modes;
|
||||
void __iomem *autoidle_reg;
|
||||
void __iomem *idlest_reg;
|
||||
u32 autoidle_mask;
|
||||
u32 freqsel_mask;
|
||||
u32 idlest_mask;
|
||||
u32 dco_mask;
|
||||
u32 sddiv_mask;
|
||||
u32 lpmode_mask;
|
||||
u32 m4xen_mask;
|
||||
u8 auto_recal_bit;
|
||||
u8 recal_en_bit;
|
||||
u8 recal_st_bit;
|
||||
u8 flags;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct clk.flags possibilities
|
||||
*
|
||||
* XXX document the rest of the clock flags here
|
||||
*
|
||||
* CLOCK_CLKOUTX2: (OMAP4 only) DPLL CLKOUT and CLKOUTX2 GATE_CTRL
|
||||
* bits share the same register. This flag allows the
|
||||
* omap4_dpllmx*() code to determine which GATE_CTRL bit field
|
||||
* should be used. This is a temporary solution - a better approach
|
||||
* would be to associate clock type-specific data with the clock,
|
||||
* similar to the struct dpll_data approach.
|
||||
*/
|
||||
#define ENABLE_REG_32BIT (1 << 0) /* Use 32-bit access */
|
||||
#define CLOCK_IDLE_CONTROL (1 << 1)
|
||||
#define CLOCK_NO_IDLE_PARENT (1 << 2)
|
||||
#define ENABLE_ON_INIT (1 << 3) /* Enable upon framework init */
|
||||
#define INVERT_ENABLE (1 << 4) /* 0 enables, 1 disables */
|
||||
#define CLOCK_CLKOUTX2 (1 << 5)
|
||||
|
||||
/**
|
||||
* struct clk_hw_omap - OMAP struct clk
|
||||
* @node: list_head connecting this clock into the full clock list
|
||||
* @enable_reg: register to write to enable the clock (see @enable_bit)
|
||||
* @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
|
||||
* @flags: see "struct clk.flags possibilities" above
|
||||
* @clksel_reg: for clksel clks, register va containing src/divisor select
|
||||
* @clksel_mask: bitmask in @clksel_reg for the src/divisor selector
|
||||
* @clksel: for clksel clks, pointer to struct clksel for this clock
|
||||
* @dpll_data: for DPLLs, pointer to struct dpll_data for this clock
|
||||
* @clkdm_name: clockdomain name that this clock is contained in
|
||||
* @clkdm: pointer to struct clockdomain, resolved from @clkdm_name at runtime
|
||||
* @rate_offset: bitshift for rate selection bitfield (OMAP1 only)
|
||||
* @src_offset: bitshift for source selection bitfield (OMAP1 only)
|
||||
*
|
||||
* XXX @rate_offset, @src_offset should probably be removed and OMAP1
|
||||
* clock code converted to use clksel.
|
||||
*
|
||||
*/
|
||||
|
||||
struct clk_hw_omap_ops;
|
||||
|
||||
struct clk_hw_omap {
|
||||
struct clk_hw hw;
|
||||
struct list_head node;
|
||||
unsigned long fixed_rate;
|
||||
u8 fixed_div;
|
||||
void __iomem *enable_reg;
|
||||
u8 enable_bit;
|
||||
u8 flags;
|
||||
void __iomem *clksel_reg;
|
||||
u32 clksel_mask;
|
||||
const struct clksel *clksel;
|
||||
struct dpll_data *dpll_data;
|
||||
const char *clkdm_name;
|
||||
struct clockdomain *clkdm;
|
||||
const struct clk_hw_omap_ops *ops;
|
||||
};
|
||||
|
||||
struct clk_hw_omap_ops {
|
||||
void (*find_idlest)(struct clk_hw_omap *oclk,
|
||||
void __iomem **idlest_reg,
|
||||
@ -348,36 +213,13 @@ unsigned long omap_fixed_divisor_recalc(struct clk_hw *hw,
|
||||
#define OMAP4XXX_EN_DPLL_FRBYPASS 0x6
|
||||
#define OMAP4XXX_EN_DPLL_LOCKED 0x7
|
||||
|
||||
/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
|
||||
#define DPLL_LOW_POWER_STOP 0x1
|
||||
#define DPLL_LOW_POWER_BYPASS 0x5
|
||||
#define DPLL_LOCKED 0x7
|
||||
|
||||
/* DPLL Type and DCO Selection Flags */
|
||||
#define DPLL_J_TYPE 0x1
|
||||
|
||||
long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
|
||||
unsigned long *parent_rate);
|
||||
unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate);
|
||||
int omap3_noncore_dpll_enable(struct clk_hw *hw);
|
||||
void omap3_noncore_dpll_disable(struct clk_hw *hw);
|
||||
int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
|
||||
unsigned long parent_rate);
|
||||
u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk);
|
||||
void omap3_dpll_allow_idle(struct clk_hw_omap *clk);
|
||||
void omap3_dpll_deny_idle(struct clk_hw_omap *clk);
|
||||
unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
|
||||
unsigned long parent_rate);
|
||||
int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk);
|
||||
void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk);
|
||||
void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk);
|
||||
unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
|
||||
unsigned long parent_rate);
|
||||
long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
|
||||
unsigned long target_rate,
|
||||
unsigned long *parent_rate);
|
||||
|
||||
void omap2_init_clk_clkdm(struct clk_hw *clk);
|
||||
void __init omap2_clk_disable_clkdm_control(void);
|
||||
|
||||
/* clkt_clksel.c public functions */
|
||||
@ -396,7 +238,6 @@ int omap2_clksel_set_parent(struct clk_hw *hw, u8 field_val);
|
||||
extern void omap2_clkt_iclk_allow_idle(struct clk_hw_omap *clk);
|
||||
extern void omap2_clkt_iclk_deny_idle(struct clk_hw_omap *clk);
|
||||
|
||||
u8 omap2_init_dpll_parent(struct clk_hw *hw);
|
||||
unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk);
|
||||
|
||||
int omap2_dflt_clk_enable(struct clk_hw *hw);
|
||||
@ -408,7 +249,6 @@ void omap2_clk_dflt_find_companion(struct clk_hw_omap *clk,
|
||||
void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
|
||||
void __iomem **idlest_reg,
|
||||
u8 *idlest_bit, u8 *idlest_val);
|
||||
void omap2_init_clk_hw_omap_clocks(struct clk *clk);
|
||||
int omap2_clk_enable_autoidle_all(void);
|
||||
int omap2_clk_disable_autoidle_all(void);
|
||||
int omap2_clk_allow_idle(struct clk *clk);
|
||||
@ -433,10 +273,8 @@ extern const struct clksel_rate gfx_l3_rates[];
|
||||
extern const struct clksel_rate dsp_ick_rates[];
|
||||
extern struct clk dummy_ck;
|
||||
|
||||
extern const struct clk_hw_omap_ops clkhwops_omap3_dpll;
|
||||
extern const struct clk_hw_omap_ops clkhwops_iclk_wait;
|
||||
extern const struct clk_hw_omap_ops clkhwops_wait;
|
||||
extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx;
|
||||
extern const struct clk_hw_omap_ops clkhwops_iclk;
|
||||
extern const struct clk_hw_omap_ops clkhwops_omap3430es2_ssi_wait;
|
||||
extern const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait;
|
||||
|
||||
@ -9,8 +9,6 @@
|
||||
#define __ARCH_ARM_MACH_OMAP2_CLOCK3XXX_H
|
||||
|
||||
int omap3xxx_clk_init(void);
|
||||
int omap3_dpll4_set_rate(struct clk_hw *clk, unsigned long rate,
|
||||
unsigned long parent_rate);
|
||||
int omap3_core_dpll_m2_set_rate(struct clk_hw *clk, unsigned long rate,
|
||||
unsigned long parent_rate);
|
||||
void omap3_clk_lock_dpll5(void);
|
||||
|
||||
@ -1,3 +1,4 @@
|
||||
ifneq ($(CONFIG_OF),)
|
||||
obj-y += clk.o
|
||||
clk-common = dpll.o
|
||||
endif
|
||||
|
||||
558
drivers/clk/ti/dpll.c
Normal file
558
drivers/clk/ti/dpll.c
Normal file
@ -0,0 +1,558 @@
|
||||
/*
|
||||
* OMAP DPLL clock support
|
||||
*
|
||||
* Copyright (C) 2013 Texas Instruments, Inc.
|
||||
*
|
||||
* Tero Kristo <t-kristo@ti.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||||
* kind, whether express or implied; without even the implied warranty
|
||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/clk/ti.h>
|
||||
|
||||
#undef pr_fmt
|
||||
#define pr_fmt(fmt) "%s: " fmt, __func__
|
||||
|
||||
#define DPLL_HAS_AUTOIDLE 0x1
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
|
||||
defined(CONFIG_SOC_DRA7XX)
|
||||
static const struct clk_ops dpll_m4xen_ck_ops = {
|
||||
.enable = &omap3_noncore_dpll_enable,
|
||||
.disable = &omap3_noncore_dpll_disable,
|
||||
.recalc_rate = &omap4_dpll_regm4xen_recalc,
|
||||
.round_rate = &omap4_dpll_regm4xen_round_rate,
|
||||
.set_rate = &omap3_noncore_dpll_set_rate,
|
||||
.get_parent = &omap2_init_dpll_parent,
|
||||
};
|
||||
#endif
|
||||
|
||||
static const struct clk_ops dpll_core_ck_ops = {
|
||||
.recalc_rate = &omap3_dpll_recalc,
|
||||
.get_parent = &omap2_init_dpll_parent,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP3
|
||||
static const struct clk_ops omap3_dpll_core_ck_ops = {
|
||||
.get_parent = &omap2_init_dpll_parent,
|
||||
.recalc_rate = &omap3_dpll_recalc,
|
||||
.round_rate = &omap2_dpll_round_rate,
|
||||
};
|
||||
#endif
|
||||
|
||||
static const struct clk_ops dpll_ck_ops = {
|
||||
.enable = &omap3_noncore_dpll_enable,
|
||||
.disable = &omap3_noncore_dpll_disable,
|
||||
.recalc_rate = &omap3_dpll_recalc,
|
||||
.round_rate = &omap2_dpll_round_rate,
|
||||
.set_rate = &omap3_noncore_dpll_set_rate,
|
||||
.get_parent = &omap2_init_dpll_parent,
|
||||
};
|
||||
|
||||
static const struct clk_ops dpll_no_gate_ck_ops = {
|
||||
.recalc_rate = &omap3_dpll_recalc,
|
||||
.get_parent = &omap2_init_dpll_parent,
|
||||
.round_rate = &omap2_dpll_round_rate,
|
||||
.set_rate = &omap3_noncore_dpll_set_rate,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP3
|
||||
static const struct clk_ops omap3_dpll_ck_ops = {
|
||||
.enable = &omap3_noncore_dpll_enable,
|
||||
.disable = &omap3_noncore_dpll_disable,
|
||||
.get_parent = &omap2_init_dpll_parent,
|
||||
.recalc_rate = &omap3_dpll_recalc,
|
||||
.set_rate = &omap3_noncore_dpll_set_rate,
|
||||
.round_rate = &omap2_dpll_round_rate,
|
||||
};
|
||||
|
||||
static const struct clk_ops omap3_dpll_per_ck_ops = {
|
||||
.enable = &omap3_noncore_dpll_enable,
|
||||
.disable = &omap3_noncore_dpll_disable,
|
||||
.get_parent = &omap2_init_dpll_parent,
|
||||
.recalc_rate = &omap3_dpll_recalc,
|
||||
.set_rate = &omap3_dpll4_set_rate,
|
||||
.round_rate = &omap2_dpll_round_rate,
|
||||
};
|
||||
#endif
|
||||
|
||||
static const struct clk_ops dpll_x2_ck_ops = {
|
||||
.recalc_rate = &omap3_clkoutx2_recalc,
|
||||
};
|
||||
|
||||
/**
|
||||
* ti_clk_register_dpll - low level registration of a DPLL clock
|
||||
* @hw: hardware clock definition for the clock
|
||||
* @node: device node for the clock
|
||||
*
|
||||
* Finalizes DPLL registration process. In case a failure (clk-ref or
|
||||
* clk-bypass is missing), the clock is added to retry list and
|
||||
* the initialization is retried on later stage.
|
||||
*/
|
||||
static void __init ti_clk_register_dpll(struct clk_hw *hw,
|
||||
struct device_node *node)
|
||||
{
|
||||
struct clk_hw_omap *clk_hw = to_clk_hw_omap(hw);
|
||||
struct dpll_data *dd = clk_hw->dpll_data;
|
||||
struct clk *clk;
|
||||
|
||||
dd->clk_ref = of_clk_get(node, 0);
|
||||
dd->clk_bypass = of_clk_get(node, 1);
|
||||
|
||||
if (IS_ERR(dd->clk_ref) || IS_ERR(dd->clk_bypass)) {
|
||||
pr_debug("clk-ref or clk-bypass missing for %s, retry later\n",
|
||||
node->name);
|
||||
if (!ti_clk_retry_init(node, hw, ti_clk_register_dpll))
|
||||
return;
|
||||
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* register the clock */
|
||||
clk = clk_register(NULL, &clk_hw->hw);
|
||||
|
||||
if (!IS_ERR(clk)) {
|
||||
omap2_init_clk_hw_omap_clocks(clk);
|
||||
of_clk_add_provider(node, of_clk_src_simple_get, clk);
|
||||
kfree(clk_hw->hw.init->parent_names);
|
||||
kfree(clk_hw->hw.init);
|
||||
return;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
kfree(clk_hw->dpll_data);
|
||||
kfree(clk_hw->hw.init->parent_names);
|
||||
kfree(clk_hw->hw.init);
|
||||
kfree(clk_hw);
|
||||
}
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
|
||||
defined(CONFIG_SOC_DRA7XX) || defined(CONFIG_SOC_AM33XX)
|
||||
/**
|
||||
* ti_clk_register_dpll_x2 - Registers a DPLLx2 clock
|
||||
* @node: device node for this clock
|
||||
* @ops: clk_ops for this clock
|
||||
* @hw_ops: clk_hw_ops for this clock
|
||||
*
|
||||
* Initializes a DPLL x 2 clock from device tree data.
|
||||
*/
|
||||
static void ti_clk_register_dpll_x2(struct device_node *node,
|
||||
const struct clk_ops *ops,
|
||||
const struct clk_hw_omap_ops *hw_ops)
|
||||
{
|
||||
struct clk *clk;
|
||||
struct clk_init_data init = { NULL };
|
||||
struct clk_hw_omap *clk_hw;
|
||||
const char *name = node->name;
|
||||
const char *parent_name;
|
||||
|
||||
parent_name = of_clk_get_parent_name(node, 0);
|
||||
if (!parent_name) {
|
||||
pr_err("%s must have parent\n", node->name);
|
||||
return;
|
||||
}
|
||||
|
||||
clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
|
||||
if (!clk_hw)
|
||||
return;
|
||||
|
||||
clk_hw->ops = hw_ops;
|
||||
clk_hw->hw.init = &init;
|
||||
|
||||
init.name = name;
|
||||
init.ops = ops;
|
||||
init.parent_names = &parent_name;
|
||||
init.num_parents = 1;
|
||||
|
||||
/* register the clock */
|
||||
clk = clk_register(NULL, &clk_hw->hw);
|
||||
|
||||
if (IS_ERR(clk)) {
|
||||
kfree(clk_hw);
|
||||
} else {
|
||||
omap2_init_clk_hw_omap_clocks(clk);
|
||||
of_clk_add_provider(node, of_clk_src_simple_get, clk);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/**
|
||||
* of_ti_dpll_setup - Setup function for OMAP DPLL clocks
|
||||
* @node: device node containing the DPLL info
|
||||
* @ops: ops for the DPLL
|
||||
* @ddt: DPLL data template to use
|
||||
* @init_flags: flags for controlling init types
|
||||
*
|
||||
* Initializes a DPLL clock from device tree data.
|
||||
*/
|
||||
static void __init of_ti_dpll_setup(struct device_node *node,
|
||||
const struct clk_ops *ops,
|
||||
const struct dpll_data *ddt,
|
||||
u8 init_flags)
|
||||
{
|
||||
struct clk_hw_omap *clk_hw = NULL;
|
||||
struct clk_init_data *init = NULL;
|
||||
const char **parent_names = NULL;
|
||||
struct dpll_data *dd = NULL;
|
||||
int i;
|
||||
u8 dpll_mode = 0;
|
||||
|
||||
dd = kzalloc(sizeof(*dd), GFP_KERNEL);
|
||||
clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
|
||||
init = kzalloc(sizeof(*init), GFP_KERNEL);
|
||||
if (!dd || !clk_hw || !init)
|
||||
goto cleanup;
|
||||
|
||||
memcpy(dd, ddt, sizeof(*dd));
|
||||
|
||||
clk_hw->dpll_data = dd;
|
||||
clk_hw->ops = &clkhwops_omap3_dpll;
|
||||
clk_hw->hw.init = init;
|
||||
clk_hw->flags = MEMMAP_ADDRESSING;
|
||||
|
||||
init->name = node->name;
|
||||
init->ops = ops;
|
||||
|
||||
init->num_parents = of_clk_get_parent_count(node);
|
||||
if (init->num_parents < 1) {
|
||||
pr_err("%s must have parent(s)\n", node->name);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
parent_names = kzalloc(sizeof(char *) * init->num_parents, GFP_KERNEL);
|
||||
if (!parent_names)
|
||||
goto cleanup;
|
||||
|
||||
for (i = 0; i < init->num_parents; i++)
|
||||
parent_names[i] = of_clk_get_parent_name(node, i);
|
||||
|
||||
init->parent_names = parent_names;
|
||||
|
||||
dd->control_reg = ti_clk_get_reg_addr(node, 0);
|
||||
dd->idlest_reg = ti_clk_get_reg_addr(node, 1);
|
||||
dd->mult_div1_reg = ti_clk_get_reg_addr(node, 2);
|
||||
|
||||
if (!dd->control_reg || !dd->idlest_reg || !dd->mult_div1_reg)
|
||||
goto cleanup;
|
||||
|
||||
if (init_flags & DPLL_HAS_AUTOIDLE) {
|
||||
dd->autoidle_reg = ti_clk_get_reg_addr(node, 3);
|
||||
if (!dd->autoidle_reg)
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
if (of_property_read_bool(node, "ti,low-power-stop"))
|
||||
dpll_mode |= 1 << DPLL_LOW_POWER_STOP;
|
||||
|
||||
if (of_property_read_bool(node, "ti,low-power-bypass"))
|
||||
dpll_mode |= 1 << DPLL_LOW_POWER_BYPASS;
|
||||
|
||||
if (of_property_read_bool(node, "ti,lock"))
|
||||
dpll_mode |= 1 << DPLL_LOCKED;
|
||||
|
||||
if (dpll_mode)
|
||||
dd->modes = dpll_mode;
|
||||
|
||||
ti_clk_register_dpll(&clk_hw->hw, node);
|
||||
return;
|
||||
|
||||
cleanup:
|
||||
kfree(dd);
|
||||
kfree(parent_names);
|
||||
kfree(init);
|
||||
kfree(clk_hw);
|
||||
}
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
|
||||
defined(CONFIG_SOC_DRA7XX)
|
||||
static void __init of_ti_omap4_dpll_x2_setup(struct device_node *node)
|
||||
{
|
||||
ti_clk_register_dpll_x2(node, &dpll_x2_ck_ops, &clkhwops_omap4_dpllmx);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap4_dpll_x2_clock, "ti,omap4-dpll-x2-clock",
|
||||
of_ti_omap4_dpll_x2_setup);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SOC_AM33XX
|
||||
static void __init of_ti_am3_dpll_x2_setup(struct device_node *node)
|
||||
{
|
||||
ti_clk_register_dpll_x2(node, &dpll_x2_ck_ops, NULL);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_am3_dpll_x2_clock, "ti,am3-dpll-x2-clock",
|
||||
of_ti_am3_dpll_x2_setup);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_ARCH_OMAP3
|
||||
static void __init of_ti_omap3_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.freqsel_mask = 0xf0,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &omap3_dpll_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap3_dpll_clock, "ti,omap3-dpll-clock",
|
||||
of_ti_omap3_dpll_setup);
|
||||
|
||||
static void __init of_ti_omap3_core_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 16,
|
||||
.div1_mask = 0x7f << 8,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.freqsel_mask = 0xf0,
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &omap3_dpll_core_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap3_core_dpll_clock, "ti,omap3-dpll-core-clock",
|
||||
of_ti_omap3_core_dpll_setup);
|
||||
|
||||
static void __init of_ti_omap3_per_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1 << 1,
|
||||
.enable_mask = 0x7 << 16,
|
||||
.autoidle_mask = 0x7 << 3,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.freqsel_mask = 0xf00000,
|
||||
.modes = (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &omap3_dpll_per_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap3_per_dpll_clock, "ti,omap3-dpll-per-clock",
|
||||
of_ti_omap3_per_dpll_setup);
|
||||
|
||||
static void __init of_ti_omap3_per_jtype_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1 << 1,
|
||||
.enable_mask = 0x7 << 16,
|
||||
.autoidle_mask = 0x7 << 3,
|
||||
.mult_mask = 0xfff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 4095,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.sddiv_mask = 0xff << 24,
|
||||
.dco_mask = 0xe << 20,
|
||||
.flags = DPLL_J_TYPE,
|
||||
.modes = (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &omap3_dpll_per_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap3_per_jtype_dpll_clock, "ti,omap3-dpll-per-j-type-clock",
|
||||
of_ti_omap3_per_jtype_dpll_setup);
|
||||
#endif
|
||||
|
||||
static void __init of_ti_omap4_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap4_dpll_clock, "ti,omap4-dpll-clock",
|
||||
of_ti_omap4_dpll_setup);
|
||||
|
||||
static void __init of_ti_omap4_core_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_core_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap4_core_dpll_clock, "ti,omap4-dpll-core-clock",
|
||||
of_ti_omap4_core_dpll_setup);
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) || \
|
||||
defined(CONFIG_SOC_DRA7XX)
|
||||
static void __init of_ti_omap4_m4xen_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.m4xen_mask = 0x800,
|
||||
.lpmode_mask = 1 << 10,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_m4xen_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap4_m4xen_dpll_clock, "ti,omap4-dpll-m4xen-clock",
|
||||
of_ti_omap4_m4xen_dpll_setup);
|
||||
|
||||
static void __init of_ti_omap4_jtype_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0xfff << 8,
|
||||
.div1_mask = 0xff,
|
||||
.max_multiplier = 4095,
|
||||
.max_divider = 256,
|
||||
.min_divider = 1,
|
||||
.sddiv_mask = 0xff << 24,
|
||||
.flags = DPLL_J_TYPE,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_m4xen_ck_ops, &dd, DPLL_HAS_AUTOIDLE);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_omap4_jtype_dpll_clock, "ti,omap4-dpll-j-type-clock",
|
||||
of_ti_omap4_jtype_dpll_setup);
|
||||
#endif
|
||||
|
||||
static void __init of_ti_am3_no_gate_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_no_gate_ck_ops, &dd, 0);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_am3_no_gate_dpll_clock, "ti,am3-dpll-no-gate-clock",
|
||||
of_ti_am3_no_gate_dpll_setup);
|
||||
|
||||
static void __init of_ti_am3_jtype_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 4095,
|
||||
.max_divider = 256,
|
||||
.min_divider = 2,
|
||||
.flags = DPLL_J_TYPE,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_ck_ops, &dd, 0);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_am3_jtype_dpll_clock, "ti,am3-dpll-j-type-clock",
|
||||
of_ti_am3_jtype_dpll_setup);
|
||||
|
||||
static void __init of_ti_am3_no_gate_jtype_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.flags = DPLL_J_TYPE,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_no_gate_ck_ops, &dd, 0);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_am3_no_gate_jtype_dpll_clock,
|
||||
"ti,am3-dpll-no-gate-j-type-clock",
|
||||
of_ti_am3_no_gate_jtype_dpll_setup);
|
||||
|
||||
static void __init of_ti_am3_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_ck_ops, &dd, 0);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_am3_dpll_clock, "ti,am3-dpll-clock", of_ti_am3_dpll_setup);
|
||||
|
||||
static void __init of_ti_am3_core_dpll_setup(struct device_node *node)
|
||||
{
|
||||
const struct dpll_data dd = {
|
||||
.idlest_mask = 0x1,
|
||||
.enable_mask = 0x7,
|
||||
.autoidle_mask = 0x7,
|
||||
.mult_mask = 0x7ff << 8,
|
||||
.div1_mask = 0x7f,
|
||||
.max_multiplier = 2047,
|
||||
.max_divider = 128,
|
||||
.min_divider = 1,
|
||||
.modes = (1 << DPLL_LOW_POWER_BYPASS) | (1 << DPLL_LOCKED),
|
||||
};
|
||||
|
||||
of_ti_dpll_setup(node, &dpll_core_ck_ops, &dd, 0);
|
||||
}
|
||||
CLK_OF_DECLARE(ti_am3_core_dpll_clock, "ti,am3-dpll-core-clock",
|
||||
of_ti_am3_core_dpll_setup);
|
||||
@ -17,6 +17,153 @@
|
||||
|
||||
#include <linux/clkdev.h>
|
||||
|
||||
/**
|
||||
* struct dpll_data - DPLL registers and integration data
|
||||
* @mult_div1_reg: register containing the DPLL M and N bitfields
|
||||
* @mult_mask: mask of the DPLL M bitfield in @mult_div1_reg
|
||||
* @div1_mask: mask of the DPLL N bitfield in @mult_div1_reg
|
||||
* @clk_bypass: struct clk pointer to the clock's bypass clock input
|
||||
* @clk_ref: struct clk pointer to the clock's reference clock input
|
||||
* @control_reg: register containing the DPLL mode bitfield
|
||||
* @enable_mask: mask of the DPLL mode bitfield in @control_reg
|
||||
* @last_rounded_rate: cache of the last rate result of omap2_dpll_round_rate()
|
||||
* @last_rounded_m: cache of the last M result of omap2_dpll_round_rate()
|
||||
* @last_rounded_m4xen: cache of the last M4X result of
|
||||
* omap4_dpll_regm4xen_round_rate()
|
||||
* @last_rounded_lpmode: cache of the last lpmode result of
|
||||
* omap4_dpll_lpmode_recalc()
|
||||
* @max_multiplier: maximum valid non-bypass multiplier value (actual)
|
||||
* @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
|
||||
* @min_divider: minimum valid non-bypass divider value (actual)
|
||||
* @max_divider: maximum valid non-bypass divider value (actual)
|
||||
* @modes: possible values of @enable_mask
|
||||
* @autoidle_reg: register containing the DPLL autoidle mode bitfield
|
||||
* @idlest_reg: register containing the DPLL idle status bitfield
|
||||
* @autoidle_mask: mask of the DPLL autoidle mode bitfield in @autoidle_reg
|
||||
* @freqsel_mask: mask of the DPLL jitter correction bitfield in @control_reg
|
||||
* @idlest_mask: mask of the DPLL idle status bitfield in @idlest_reg
|
||||
* @lpmode_mask: mask of the DPLL low-power mode bitfield in @control_reg
|
||||
* @m4xen_mask: mask of the DPLL M4X multiplier bitfield in @control_reg
|
||||
* @auto_recal_bit: bitshift of the driftguard enable bit in @control_reg
|
||||
* @recal_en_bit: bitshift of the PRM_IRQENABLE_* bit for recalibration IRQs
|
||||
* @recal_st_bit: bitshift of the PRM_IRQSTATUS_* bit for recalibration IRQs
|
||||
* @flags: DPLL type/features (see below)
|
||||
*
|
||||
* Possible values for @flags:
|
||||
* DPLL_J_TYPE: "J-type DPLL" (only some 36xx, 4xxx DPLLs)
|
||||
*
|
||||
* @freqsel_mask is only used on the OMAP34xx family and AM35xx.
|
||||
*
|
||||
* XXX Some DPLLs have multiple bypass inputs, so it's not technically
|
||||
* correct to only have one @clk_bypass pointer.
|
||||
*
|
||||
* XXX The runtime-variable fields (@last_rounded_rate, @last_rounded_m,
|
||||
* @last_rounded_n) should be separated from the runtime-fixed fields
|
||||
* and placed into a different structure, so that the runtime-fixed data
|
||||
* can be placed into read-only space.
|
||||
*/
|
||||
struct dpll_data {
|
||||
void __iomem *mult_div1_reg;
|
||||
u32 mult_mask;
|
||||
u32 div1_mask;
|
||||
struct clk *clk_bypass;
|
||||
struct clk *clk_ref;
|
||||
void __iomem *control_reg;
|
||||
u32 enable_mask;
|
||||
unsigned long last_rounded_rate;
|
||||
u16 last_rounded_m;
|
||||
u8 last_rounded_m4xen;
|
||||
u8 last_rounded_lpmode;
|
||||
u16 max_multiplier;
|
||||
u8 last_rounded_n;
|
||||
u8 min_divider;
|
||||
u16 max_divider;
|
||||
u8 modes;
|
||||
void __iomem *autoidle_reg;
|
||||
void __iomem *idlest_reg;
|
||||
u32 autoidle_mask;
|
||||
u32 freqsel_mask;
|
||||
u32 idlest_mask;
|
||||
u32 dco_mask;
|
||||
u32 sddiv_mask;
|
||||
u32 lpmode_mask;
|
||||
u32 m4xen_mask;
|
||||
u8 auto_recal_bit;
|
||||
u8 recal_en_bit;
|
||||
u8 recal_st_bit;
|
||||
u8 flags;
|
||||
};
|
||||
|
||||
struct clk_hw_omap_ops;
|
||||
|
||||
/**
|
||||
* struct clk_hw_omap - OMAP struct clk
|
||||
* @node: list_head connecting this clock into the full clock list
|
||||
* @enable_reg: register to write to enable the clock (see @enable_bit)
|
||||
* @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
|
||||
* @flags: see "struct clk.flags possibilities" above
|
||||
* @clksel_reg: for clksel clks, register va containing src/divisor select
|
||||
* @clksel_mask: bitmask in @clksel_reg for the src/divisor selector
|
||||
* @clksel: for clksel clks, pointer to struct clksel for this clock
|
||||
* @dpll_data: for DPLLs, pointer to struct dpll_data for this clock
|
||||
* @clkdm_name: clockdomain name that this clock is contained in
|
||||
* @clkdm: pointer to struct clockdomain, resolved from @clkdm_name at runtime
|
||||
* @ops: clock ops for this clock
|
||||
*/
|
||||
struct clk_hw_omap {
|
||||
struct clk_hw hw;
|
||||
struct list_head node;
|
||||
unsigned long fixed_rate;
|
||||
u8 fixed_div;
|
||||
void __iomem *enable_reg;
|
||||
u8 enable_bit;
|
||||
u8 flags;
|
||||
void __iomem *clksel_reg;
|
||||
u32 clksel_mask;
|
||||
const struct clksel *clksel;
|
||||
struct dpll_data *dpll_data;
|
||||
const char *clkdm_name;
|
||||
struct clockdomain *clkdm;
|
||||
const struct clk_hw_omap_ops *ops;
|
||||
};
|
||||
|
||||
/*
|
||||
* struct clk_hw_omap.flags possibilities
|
||||
*
|
||||
* XXX document the rest of the clock flags here
|
||||
*
|
||||
* ENABLE_REG_32BIT: (OMAP1 only) clock control register must be accessed
|
||||
* with 32bit ops, by default OMAP1 uses 16bit ops.
|
||||
* CLOCK_IDLE_CONTROL: (OMAP1 only) clock has autoidle support.
|
||||
* CLOCK_NO_IDLE_PARENT: (OMAP1 only) when clock is enabled, its parent
|
||||
* clock is put to no-idle mode.
|
||||
* ENABLE_ON_INIT: Clock is enabled on init.
|
||||
* INVERT_ENABLE: By default, clock enable bit behavior is '1' enable, '0'
|
||||
* disable. This inverts the behavior making '0' enable and '1' disable.
|
||||
* CLOCK_CLKOUTX2: (OMAP4 only) DPLL CLKOUT and CLKOUTX2 GATE_CTRL
|
||||
* bits share the same register. This flag allows the
|
||||
* omap4_dpllmx*() code to determine which GATE_CTRL bit field
|
||||
* should be used. This is a temporary solution - a better approach
|
||||
* would be to associate clock type-specific data with the clock,
|
||||
* similar to the struct dpll_data approach.
|
||||
* MEMMAP_ADDRESSING: Use memmap addressing to access clock registers.
|
||||
*/
|
||||
#define ENABLE_REG_32BIT (1 << 0) /* Use 32-bit access */
|
||||
#define CLOCK_IDLE_CONTROL (1 << 1)
|
||||
#define CLOCK_NO_IDLE_PARENT (1 << 2)
|
||||
#define ENABLE_ON_INIT (1 << 3) /* Enable upon framework init */
|
||||
#define INVERT_ENABLE (1 << 4) /* 0 enables, 1 disables */
|
||||
#define CLOCK_CLKOUTX2 (1 << 5)
|
||||
#define MEMMAP_ADDRESSING (1 << 6)
|
||||
|
||||
/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
|
||||
#define DPLL_LOW_POWER_STOP 0x1
|
||||
#define DPLL_LOW_POWER_BYPASS 0x5
|
||||
#define DPLL_LOCKED 0x7
|
||||
|
||||
/* DPLL Type and DCO Selection Flags */
|
||||
#define DPLL_J_TYPE 0x1
|
||||
|
||||
/**
|
||||
* struct ti_dt_clk - OMAP DT clock alias declarations
|
||||
* @lk: clock lookup definition
|
||||
@ -68,10 +215,35 @@ struct ti_clk_ll_ops {
|
||||
|
||||
extern struct ti_clk_ll_ops *ti_clk_ll_ops;
|
||||
|
||||
#define to_clk_hw_omap(_hw) container_of(_hw, struct clk_hw_omap, hw)
|
||||
|
||||
void omap2_init_clk_hw_omap_clocks(struct clk *clk);
|
||||
int omap3_noncore_dpll_enable(struct clk_hw *hw);
|
||||
void omap3_noncore_dpll_disable(struct clk_hw *hw);
|
||||
int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
|
||||
unsigned long parent_rate);
|
||||
unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
|
||||
unsigned long parent_rate);
|
||||
long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
|
||||
unsigned long target_rate,
|
||||
unsigned long *parent_rate);
|
||||
u8 omap2_init_dpll_parent(struct clk_hw *hw);
|
||||
unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate);
|
||||
long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
|
||||
unsigned long *parent_rate);
|
||||
void omap2_init_clk_clkdm(struct clk_hw *clk);
|
||||
unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
|
||||
unsigned long parent_rate);
|
||||
int omap3_dpll4_set_rate(struct clk_hw *clk, unsigned long rate,
|
||||
unsigned long parent_rate);
|
||||
|
||||
void __iomem *ti_clk_get_reg_addr(struct device_node *node, int index);
|
||||
void ti_dt_clocks_register(struct ti_dt_clk *oclks);
|
||||
void ti_dt_clk_init_provider(struct device_node *np, int index);
|
||||
int ti_clk_retry_init(struct device_node *node, struct clk_hw *hw,
|
||||
ti_of_clk_init_cb_t func);
|
||||
|
||||
extern const struct clk_hw_omap_ops clkhwops_omap3_dpll;
|
||||
extern const struct clk_hw_omap_ops clkhwops_omap4_dpllmx;
|
||||
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user