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linux/drivers/clk/at91/sama7g5.c
Claudiu Beznea 91f3bf0d53 clk: at91: sama7g5: register cpu clock 
Register CPU clock as being the master clock prescaler. This would
be used by DVFS. The block schema of SAMA7G5's PMC contains also a divider
between master clock prescaler and CPU (PMC_CPU_RATIO.RATIO) but the
frequencies supported by SAMA7G5 could be directly received from
CPUPLL + master clock prescaler and the extra divider would do no work in
case it would be enabled.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1605800597-16720-12-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-12-19 11:50:56 -08:00

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// SPDX-License-Identifier: GPL-2.0
/*
* SAMA7G5 PMC code.
*
* Copyright (C) 2020 Microchip Technology Inc. and its subsidiaries
*
* Author: Claudiu Beznea <claudiu.beznea@microchip.com>
*
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/mfd/syscon.h>
#include <linux/slab.h>
#include <dt-bindings/clock/at91.h>
#include "pmc.h"
#define SAMA7G5_INIT_TABLE(_table, _count) \
do { \
u8 _i; \
for (_i = 0; _i < (_count); _i++) \
(_table)[_i] = _i; \
} while (0)
#define SAMA7G5_FILL_TABLE(_to, _from, _count) \
do { \
u8 _i; \
for (_i = 0; _i < (_count); _i++) { \
(_to)[_i] = (_from)[_i]; \
} \
} while (0)
static DEFINE_SPINLOCK(pmc_pll_lock);
static DEFINE_SPINLOCK(pmc_mck0_lock);
static DEFINE_SPINLOCK(pmc_mckX_lock);
/**
* PLL clocks identifiers
* @PLL_ID_CPU: CPU PLL identifier
* @PLL_ID_SYS: System PLL identifier
* @PLL_ID_DDR: DDR PLL identifier
* @PLL_ID_IMG: Image subsystem PLL identifier
* @PLL_ID_BAUD: Baud PLL identifier
* @PLL_ID_AUDIO: Audio PLL identifier
* @PLL_ID_ETH: Ethernet PLL identifier
*/
enum pll_ids {
PLL_ID_CPU,
PLL_ID_SYS,
PLL_ID_DDR,
PLL_ID_IMG,
PLL_ID_BAUD,
PLL_ID_AUDIO,
PLL_ID_ETH,
PLL_ID_MAX,
};
/**
* PLL type identifiers
* @PLL_TYPE_FRAC: fractional PLL identifier
* @PLL_TYPE_DIV: divider PLL identifier
*/
enum pll_type {
PLL_TYPE_FRAC,
PLL_TYPE_DIV,
};
/* Layout for fractional PLLs. */
static const struct clk_pll_layout pll_layout_frac = {
.mul_mask = GENMASK(31, 24),
.frac_mask = GENMASK(21, 0),
.mul_shift = 24,
.frac_shift = 0,
};
/* Layout for DIVPMC dividers. */
static const struct clk_pll_layout pll_layout_divpmc = {
.div_mask = GENMASK(7, 0),
.endiv_mask = BIT(29),
.div_shift = 0,
.endiv_shift = 29,
};
/* Layout for DIVIO dividers. */
static const struct clk_pll_layout pll_layout_divio = {
.div_mask = GENMASK(19, 12),
.endiv_mask = BIT(30),
.div_shift = 12,
.endiv_shift = 30,
};
/*
* CPU PLL output range.
* Notice: The upper limit has been setup to 1000000002 due to hardware
* block which cannot output exactly 1GHz.
*/
static const struct clk_range cpu_pll_outputs[] = {
{ .min = 2343750, .max = 1000000002 },
};
/* PLL output range. */
static const struct clk_range pll_outputs[] = {
{ .min = 2343750, .max = 1200000000 },
};
/* CPU PLL characteristics. */
static const struct clk_pll_characteristics cpu_pll_characteristics = {
.input = { .min = 12000000, .max = 50000000 },
.num_output = ARRAY_SIZE(cpu_pll_outputs),
.output = cpu_pll_outputs,
};
/* PLL characteristics. */
static const struct clk_pll_characteristics pll_characteristics = {
.input = { .min = 12000000, .max = 50000000 },
.num_output = ARRAY_SIZE(pll_outputs),
.output = pll_outputs,
};
/**
* PLL clocks description
* @n: clock name
* @p: clock parent
* @l: clock layout
* @c: clock characteristics
* @t: clock type
* @f: clock flags
* @eid: export index in sama7g5->chws[] array
*/
static const struct {
const char *n;
const char *p;
const struct clk_pll_layout *l;
const struct clk_pll_characteristics *c;
unsigned long f;
u8 t;
u8 eid;
} sama7g5_plls[][PLL_ID_MAX] = {
[PLL_ID_CPU] = {
{ .n = "cpupll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
.c = &cpu_pll_characteristics,
.t = PLL_TYPE_FRAC,
/*
* This feeds cpupll_divpmcck which feeds CPU. It should
* not be disabled.
*/
.f = CLK_IS_CRITICAL, },
{ .n = "cpupll_divpmcck",
.p = "cpupll_fracck",
.l = &pll_layout_divpmc,
.c = &cpu_pll_characteristics,
.t = PLL_TYPE_DIV,
/* This feeds CPU. It should not be disabled. */
.f = CLK_IS_CRITICAL | CLK_SET_RATE_PARENT,
.eid = PMC_CPUPLL, },
},
[PLL_ID_SYS] = {
{ .n = "syspll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
.c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
/*
* This feeds syspll_divpmcck which may feed critial parts
* of the systems like timers. Therefore it should not be
* disabled.
*/
.f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, },
{ .n = "syspll_divpmcck",
.p = "syspll_fracck",
.l = &pll_layout_divpmc,
.c = &pll_characteristics,
.t = PLL_TYPE_DIV,
/*
* This may feed critial parts of the systems like timers.
* Therefore it should not be disabled.
*/
.f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE,
.eid = PMC_SYSPLL, },
},
[PLL_ID_DDR] = {
{ .n = "ddrpll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
.c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
/*
* This feeds ddrpll_divpmcck which feeds DDR. It should not
* be disabled.
*/
.f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, },
{ .n = "ddrpll_divpmcck",
.p = "ddrpll_fracck",
.l = &pll_layout_divpmc,
.c = &pll_characteristics,
.t = PLL_TYPE_DIV,
/* This feeds DDR. It should not be disabled. */
.f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE, },
},
[PLL_ID_IMG] = {
{ .n = "imgpll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
.c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
.f = CLK_SET_RATE_GATE, },
{ .n = "imgpll_divpmcck",
.p = "imgpll_fracck",
.l = &pll_layout_divpmc,
.c = &pll_characteristics,
.t = PLL_TYPE_DIV,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT, },
},
[PLL_ID_BAUD] = {
{ .n = "baudpll_fracck",
.p = "mainck",
.l = &pll_layout_frac,
.c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
.f = CLK_SET_RATE_GATE, },
{ .n = "baudpll_divpmcck",
.p = "baudpll_fracck",
.l = &pll_layout_divpmc,
.c = &pll_characteristics,
.t = PLL_TYPE_DIV,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT, },
},
[PLL_ID_AUDIO] = {
{ .n = "audiopll_fracck",
.p = "main_xtal",
.l = &pll_layout_frac,
.c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
.f = CLK_SET_RATE_GATE, },
{ .n = "audiopll_divpmcck",
.p = "audiopll_fracck",
.l = &pll_layout_divpmc,
.c = &pll_characteristics,
.t = PLL_TYPE_DIV,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT,
.eid = PMC_AUDIOPMCPLL, },
{ .n = "audiopll_diviock",
.p = "audiopll_fracck",
.l = &pll_layout_divio,
.c = &pll_characteristics,
.t = PLL_TYPE_DIV,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT,
.eid = PMC_AUDIOIOPLL, },
},
[PLL_ID_ETH] = {
{ .n = "ethpll_fracck",
.p = "main_xtal",
.l = &pll_layout_frac,
.c = &pll_characteristics,
.t = PLL_TYPE_FRAC,
.f = CLK_SET_RATE_GATE, },
{ .n = "ethpll_divpmcck",
.p = "ethpll_fracck",
.l = &pll_layout_divpmc,
.c = &pll_characteristics,
.t = PLL_TYPE_DIV,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT, },
},
};
/**
* Master clock (MCK[1..4]) description
* @n: clock name
* @ep: extra parents names array
* @ep_chg_chg_id: index in parents array that specifies the changeable
* parent
* @ep_count: extra parents count
* @ep_mux_table: mux table for extra parents
* @id: clock id
* @c: true if clock is critical and cannot be disabled
*/
static const struct {
const char *n;
const char *ep[4];
int ep_chg_id;
u8 ep_count;
u8 ep_mux_table[4];
u8 id;
u8 c;
} sama7g5_mckx[] = {
{ .n = "mck1",
.id = 1,
.ep = { "syspll_divpmcck", },
.ep_mux_table = { 5, },
.ep_count = 1,
.ep_chg_id = INT_MIN,
.c = 1, },
{ .n = "mck2",
.id = 2,
.ep = { "ddrpll_divpmcck", },
.ep_mux_table = { 6, },
.ep_count = 1,
.ep_chg_id = INT_MIN,
.c = 1, },
{ .n = "mck3",
.id = 3,
.ep = { "syspll_divpmcck", "ddrpll_divpmcck", "imgpll_divpmcck", },
.ep_mux_table = { 5, 6, 7, },
.ep_count = 3,
.ep_chg_id = 5, },
{ .n = "mck4",
.id = 4,
.ep = { "syspll_divpmcck", },
.ep_mux_table = { 5, },
.ep_count = 1,
.ep_chg_id = INT_MIN,
.c = 1, },
};
/**
* System clock description
* @n: clock name
* @p: clock parent name
* @id: clock id
*/
static const struct {
const char *n;
const char *p;
u8 id;
} sama7g5_systemck[] = {
{ .n = "pck0", .p = "prog0", .id = 8, },
{ .n = "pck1", .p = "prog1", .id = 9, },
{ .n = "pck2", .p = "prog2", .id = 10, },
{ .n = "pck3", .p = "prog3", .id = 11, },
{ .n = "pck4", .p = "prog4", .id = 12, },
{ .n = "pck5", .p = "prog5", .id = 13, },
{ .n = "pck6", .p = "prog6", .id = 14, },
{ .n = "pck7", .p = "prog7", .id = 15, },
};
/* Mux table for programmable clocks. */
static u32 sama7g5_prog_mux_table[] = { 0, 1, 2, 5, 6, 7, 8, 9, 10, };
/**
* Peripheral clock description
* @n: clock name
* @p: clock parent name
* @r: clock range values
* @id: clock id
* @chgp: index in parent array of the changeable parent
*/
static const struct {
const char *n;
const char *p;
struct clk_range r;
u8 chgp;
u8 id;
} sama7g5_periphck[] = {
{ .n = "pioA_clk", .p = "mck0", .id = 11, },
{ .n = "sfr_clk", .p = "mck1", .id = 19, },
{ .n = "hsmc_clk", .p = "mck1", .id = 21, },
{ .n = "xdmac0_clk", .p = "mck1", .id = 22, },
{ .n = "xdmac1_clk", .p = "mck1", .id = 23, },
{ .n = "xdmac2_clk", .p = "mck1", .id = 24, },
{ .n = "acc_clk", .p = "mck1", .id = 25, },
{ .n = "aes_clk", .p = "mck1", .id = 27, },
{ .n = "tzaesbasc_clk", .p = "mck1", .id = 28, },
{ .n = "asrc_clk", .p = "mck1", .id = 30, .r = { .max = 200000000, }, },
{ .n = "cpkcc_clk", .p = "mck0", .id = 32, },
{ .n = "csi_clk", .p = "mck3", .id = 33, .r = { .max = 266000000, }, .chgp = 1, },
{ .n = "csi2dc_clk", .p = "mck3", .id = 34, .r = { .max = 266000000, }, .chgp = 1, },
{ .n = "eic_clk", .p = "mck1", .id = 37, },
{ .n = "flex0_clk", .p = "mck1", .id = 38, },
{ .n = "flex1_clk", .p = "mck1", .id = 39, },
{ .n = "flex2_clk", .p = "mck1", .id = 40, },
{ .n = "flex3_clk", .p = "mck1", .id = 41, },
{ .n = "flex4_clk", .p = "mck1", .id = 42, },
{ .n = "flex5_clk", .p = "mck1", .id = 43, },
{ .n = "flex6_clk", .p = "mck1", .id = 44, },
{ .n = "flex7_clk", .p = "mck1", .id = 45, },
{ .n = "flex8_clk", .p = "mck1", .id = 46, },
{ .n = "flex9_clk", .p = "mck1", .id = 47, },
{ .n = "flex10_clk", .p = "mck1", .id = 48, },
{ .n = "flex11_clk", .p = "mck1", .id = 49, },
{ .n = "gmac0_clk", .p = "mck1", .id = 51, },
{ .n = "gmac1_clk", .p = "mck1", .id = 52, },
{ .n = "icm_clk", .p = "mck1", .id = 55, },
{ .n = "isc_clk", .p = "mck3", .id = 56, .r = { .max = 266000000, }, .chgp = 1, },
{ .n = "i2smcc0_clk", .p = "mck1", .id = 57, .r = { .max = 200000000, }, },
{ .n = "i2smcc1_clk", .p = "mck1", .id = 58, .r = { .max = 200000000, }, },
{ .n = "matrix_clk", .p = "mck1", .id = 60, },
{ .n = "mcan0_clk", .p = "mck1", .id = 61, .r = { .max = 200000000, }, },
{ .n = "mcan1_clk", .p = "mck1", .id = 62, .r = { .max = 200000000, }, },
{ .n = "mcan2_clk", .p = "mck1", .id = 63, .r = { .max = 200000000, }, },
{ .n = "mcan3_clk", .p = "mck1", .id = 64, .r = { .max = 200000000, }, },
{ .n = "mcan4_clk", .p = "mck1", .id = 65, .r = { .max = 200000000, }, },
{ .n = "mcan5_clk", .p = "mck1", .id = 66, .r = { .max = 200000000, }, },
{ .n = "pdmc0_clk", .p = "mck1", .id = 68, .r = { .max = 200000000, }, },
{ .n = "pdmc1_clk", .p = "mck1", .id = 69, .r = { .max = 200000000, }, },
{ .n = "pit64b0_clk", .p = "mck1", .id = 70, },
{ .n = "pit64b1_clk", .p = "mck1", .id = 71, },
{ .n = "pit64b2_clk", .p = "mck1", .id = 72, },
{ .n = "pit64b3_clk", .p = "mck1", .id = 73, },
{ .n = "pit64b4_clk", .p = "mck1", .id = 74, },
{ .n = "pit64b5_clk", .p = "mck1", .id = 75, },
{ .n = "pwm_clk", .p = "mck1", .id = 77, },
{ .n = "qspi0_clk", .p = "mck1", .id = 78, },
{ .n = "qspi1_clk", .p = "mck1", .id = 79, },
{ .n = "sdmmc0_clk", .p = "mck1", .id = 80, },
{ .n = "sdmmc1_clk", .p = "mck1", .id = 81, },
{ .n = "sdmmc2_clk", .p = "mck1", .id = 82, },
{ .n = "sha_clk", .p = "mck1", .id = 83, },
{ .n = "spdifrx_clk", .p = "mck1", .id = 84, .r = { .max = 200000000, }, },
{ .n = "spdiftx_clk", .p = "mck1", .id = 85, .r = { .max = 200000000, }, },
{ .n = "ssc0_clk", .p = "mck1", .id = 86, .r = { .max = 200000000, }, },
{ .n = "ssc1_clk", .p = "mck1", .id = 87, .r = { .max = 200000000, }, },
{ .n = "tcb0_ch0_clk", .p = "mck1", .id = 88, .r = { .max = 200000000, }, },
{ .n = "tcb0_ch1_clk", .p = "mck1", .id = 89, .r = { .max = 200000000, }, },
{ .n = "tcb0_ch2_clk", .p = "mck1", .id = 90, .r = { .max = 200000000, }, },
{ .n = "tcb1_ch0_clk", .p = "mck1", .id = 91, .r = { .max = 200000000, }, },
{ .n = "tcb1_ch1_clk", .p = "mck1", .id = 92, .r = { .max = 200000000, }, },
{ .n = "tcb1_ch2_clk", .p = "mck1", .id = 93, .r = { .max = 200000000, }, },
{ .n = "tcpca_clk", .p = "mck1", .id = 94, },
{ .n = "tcpcb_clk", .p = "mck1", .id = 95, },
{ .n = "tdes_clk", .p = "mck1", .id = 96, },
{ .n = "trng_clk", .p = "mck1", .id = 97, },
{ .n = "udphsa_clk", .p = "mck1", .id = 104, },
{ .n = "udphsb_clk", .p = "mck1", .id = 105, },
{ .n = "uhphs_clk", .p = "mck1", .id = 106, },
};
/**
* Generic clock description
* @n: clock name
* @pp: PLL parents
* @pp_mux_table: PLL parents mux table
* @r: clock output range
* @pp_chg_id: id in parrent array of changeable PLL parent
* @pp_count: PLL parents count
* @id: clock id
*/
static const struct {
const char *n;
const char *pp[8];
const char pp_mux_table[8];
struct clk_range r;
int pp_chg_id;
u8 pp_count;
u8 id;
} sama7g5_gck[] = {
{ .n = "adc_gclk",
.id = 26,
.r = { .max = 100000000, },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 7, 9, },
.pp_count = 3,
.pp_chg_id = INT_MIN, },
{ .n = "asrc_gclk",
.id = 30,
.r = { .max = 200000000 },
.pp = { "audiopll_divpmcck", },
.pp_mux_table = { 9, },
.pp_count = 1,
.pp_chg_id = 3, },
{ .n = "csi_gclk",
.id = 33,
.r = { .max = 27000000 },
.pp = { "ddrpll_divpmcck", "imgpll_divpmcck", },
.pp_mux_table = { 6, 7, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex0_gclk",
.id = 38,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex1_gclk",
.id = 39,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex2_gclk",
.id = 40,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex3_gclk",
.id = 41,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex4_gclk",
.id = 42,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex5_gclk",
.id = 43,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex6_gclk",
.id = 44,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex7_gclk",
.id = 45,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex8_gclk",
.id = 46,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex9_gclk",
.id = 47,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex10_gclk",
.id = 48,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "flex11_gclk",
.id = 49,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "gmac0_gclk",
.id = 51,
.r = { .max = 125000000 },
.pp = { "ethpll_divpmcck", },
.pp_mux_table = { 10, },
.pp_count = 1,
.pp_chg_id = 3, },
{ .n = "gmac1_gclk",
.id = 52,
.r = { .max = 50000000 },
.pp = { "ethpll_divpmcck", },
.pp_mux_table = { 10, },
.pp_count = 1,
.pp_chg_id = INT_MIN, },
{ .n = "gmac0_tsu_gclk",
.id = 53,
.r = { .max = 300000000 },
.pp = { "audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 9, 10, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "gmac1_tsu_gclk",
.id = 54,
.r = { .max = 300000000 },
.pp = { "audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 9, 10, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "i2smcc0_gclk",
.id = 57,
.r = { .max = 100000000 },
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
.pp_chg_id = 4, },
{ .n = "i2smcc1_gclk",
.id = 58,
.r = { .max = 100000000 },
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
.pp_chg_id = 4, },
{ .n = "mcan0_gclk",
.id = 61,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "mcan1_gclk",
.id = 62,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "mcan2_gclk",
.id = 63,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "mcan3_gclk",
.id = 64,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "mcan4_gclk",
.id = 65,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "mcan5_gclk",
.id = 66,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "pdmc0_gclk",
.id = 68,
.r = { .max = 50000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "pdmc1_gclk",
.id = 69,
.r = { .max = 50000000, },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "pit64b0_gclk",
.id = 70,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "pit64b1_gclk",
.id = 71,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "pit64b2_gclk",
.id = 72,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "pit64b3_gclk",
.id = 73,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "pit64b4_gclk",
.id = 74,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "pit64b5_gclk",
.id = 75,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "qspi0_gclk",
.id = 78,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "qspi1_gclk",
.id = 79,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN, },
{ .n = "sdmmc0_gclk",
.id = 80,
.r = { .max = 208000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = 4, },
{ .n = "sdmmc1_gclk",
.id = 81,
.r = { .max = 208000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = 4, },
{ .n = "sdmmc2_gclk",
.id = 82,
.r = { .max = 208000000 },
.pp = { "syspll_divpmcck", "baudpll_divpmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = 4, },
{ .n = "spdifrx_gclk",
.id = 84,
.r = { .max = 150000000 },
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
.pp_chg_id = 4, },
{ .n = "spdiftx_gclk",
.id = 85,
.r = { .max = 25000000 },
.pp = { "syspll_divpmcck", "audiopll_divpmcck", },
.pp_mux_table = { 5, 9, },
.pp_count = 2,
.pp_chg_id = 4, },
{ .n = "tcb0_ch0_gclk",
.id = 88,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "tcb1_ch0_gclk",
.id = 91,
.r = { .max = 200000000 },
.pp = { "syspll_divpmcck", "imgpll_divpmcck", "baudpll_divpmcck",
"audiopll_divpmcck", "ethpll_divpmcck", },
.pp_mux_table = { 5, 7, 8, 9, 10, },
.pp_count = 5,
.pp_chg_id = INT_MIN, },
{ .n = "tcpca_gclk",
.id = 94,
.r = { .max = 32768, },
.pp_chg_id = INT_MIN, },
{ .n = "tcpcb_gclk",
.id = 95,
.r = { .max = 32768, },
.pp_chg_id = INT_MIN, },
};
/* MCK0 characteristics. */
static const struct clk_master_characteristics mck0_characteristics = {
.output = { .min = 50000000, .max = 200000000 },
.divisors = { 1, 2, 4, 3, 5 },
.have_div3_pres = 1,
};
/* MCK0 layout. */
static const struct clk_master_layout mck0_layout = {
.mask = 0x773,
.pres_shift = 4,
.offset = 0x28,
};
/* Programmable clock layout. */
static const struct clk_programmable_layout programmable_layout = {
.pres_mask = 0xff,
.pres_shift = 8,
.css_mask = 0x1f,
.have_slck_mck = 0,
.is_pres_direct = 1,
};
/* Peripheral clock layout. */
static const struct clk_pcr_layout sama7g5_pcr_layout = {
.offset = 0x88,
.cmd = BIT(31),
.gckcss_mask = GENMASK(12, 8),
.pid_mask = GENMASK(6, 0),
};
static void __init sama7g5_pmc_setup(struct device_node *np)
{
const char *td_slck_name, *md_slck_name, *mainxtal_name;
struct pmc_data *sama7g5_pmc;
const char *parent_names[10];
void **alloc_mem = NULL;
int alloc_mem_size = 0;
struct regmap *regmap;
struct clk_hw *hw;
bool bypass;
int i, j;
i = of_property_match_string(np, "clock-names", "td_slck");
if (i < 0)
return;
td_slck_name = of_clk_get_parent_name(np, i);
i = of_property_match_string(np, "clock-names", "md_slck");
if (i < 0)
return;
md_slck_name = of_clk_get_parent_name(np, i);
i = of_property_match_string(np, "clock-names", "main_xtal");
if (i < 0)
return;
mainxtal_name = of_clk_get_parent_name(np, i);
regmap = device_node_to_regmap(np);
if (IS_ERR(regmap))
return;
sama7g5_pmc = pmc_data_allocate(PMC_CPU + 1,
nck(sama7g5_systemck),
nck(sama7g5_periphck),
nck(sama7g5_gck), 8);
if (!sama7g5_pmc)
return;
alloc_mem = kmalloc(sizeof(void *) *
(ARRAY_SIZE(sama7g5_mckx) + ARRAY_SIZE(sama7g5_gck)),
GFP_KERNEL);
if (!alloc_mem)
goto err_free;
hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
50000000);
if (IS_ERR(hw))
goto err_free;
bypass = of_property_read_bool(np, "atmel,osc-bypass");
hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
bypass);
if (IS_ERR(hw))
goto err_free;
parent_names[0] = "main_rc_osc";
parent_names[1] = "main_osc";
hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->chws[PMC_MAIN] = hw;
for (i = 0; i < PLL_ID_MAX; i++) {
for (j = 0; j < 3; j++) {
struct clk_hw *parent_hw;
if (!sama7g5_plls[i][j].n)
continue;
switch (sama7g5_plls[i][j].t) {
case PLL_TYPE_FRAC:
if (!strcmp(sama7g5_plls[i][j].p, "mainck"))
parent_hw = sama7g5_pmc->chws[PMC_MAIN];
else
parent_hw = __clk_get_hw(of_clk_get_by_name(np,
sama7g5_plls[i][j].p));
hw = sam9x60_clk_register_frac_pll(regmap,
&pmc_pll_lock, sama7g5_plls[i][j].n,
sama7g5_plls[i][j].p, parent_hw, i,
sama7g5_plls[i][j].c,
sama7g5_plls[i][j].l,
sama7g5_plls[i][j].f);
break;
case PLL_TYPE_DIV:
hw = sam9x60_clk_register_div_pll(regmap,
&pmc_pll_lock, sama7g5_plls[i][j].n,
sama7g5_plls[i][j].p, i,
sama7g5_plls[i][j].c,
sama7g5_plls[i][j].l,
sama7g5_plls[i][j].f);
break;
default:
continue;
}
if (IS_ERR(hw))
goto err_free;
if (sama7g5_plls[i][j].eid)
sama7g5_pmc->chws[sama7g5_plls[i][j].eid] = hw;
}
}
parent_names[0] = "cpupll_divpmcck";
hw = at91_clk_register_master_pres(regmap, "cpuck", 1, parent_names,
&mck0_layout, &mck0_characteristics,
&pmc_mck0_lock,
CLK_SET_RATE_PARENT, 0);
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->chws[PMC_CPU] = hw;
hw = at91_clk_register_master_div(regmap, "mck0", "cpuck",
&mck0_layout, &mck0_characteristics,
&pmc_mck0_lock, 0);
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->chws[PMC_MCK] = hw;
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
for (i = 0; i < ARRAY_SIZE(sama7g5_mckx); i++) {
u8 num_parents = 3 + sama7g5_mckx[i].ep_count;
u32 *mux_table;
mux_table = kmalloc_array(num_parents, sizeof(*mux_table),
GFP_KERNEL);
if (!mux_table)
goto err_free;
SAMA7G5_INIT_TABLE(mux_table, 3);
SAMA7G5_FILL_TABLE(&mux_table[3], sama7g5_mckx[i].ep_mux_table,
sama7g5_mckx[i].ep_count);
SAMA7G5_FILL_TABLE(&parent_names[3], sama7g5_mckx[i].ep,
sama7g5_mckx[i].ep_count);
hw = at91_clk_sama7g5_register_master(regmap, sama7g5_mckx[i].n,
num_parents, parent_names, mux_table,
&pmc_mckX_lock, sama7g5_mckx[i].id,
sama7g5_mckx[i].c,
sama7g5_mckx[i].ep_chg_id);
if (IS_ERR(hw))
goto err_free;
alloc_mem[alloc_mem_size++] = mux_table;
}
hw = at91_clk_sama7g5_register_utmi(regmap, "utmick", "main_xtal");
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->chws[PMC_UTMI] = hw;
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
parent_names[3] = "syspll_divpmcck";
parent_names[4] = "ddrpll_divpmcck";
parent_names[5] = "imgpll_divpmcck";
parent_names[6] = "baudpll_divpmcck";
parent_names[7] = "audiopll_divpmcck";
parent_names[8] = "ethpll_divpmcck";
for (i = 0; i < 8; i++) {
char name[6];
snprintf(name, sizeof(name), "prog%d", i);
hw = at91_clk_register_programmable(regmap, name, parent_names,
9, i,
&programmable_layout,
sama7g5_prog_mux_table);
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->pchws[i] = hw;
}
for (i = 0; i < ARRAY_SIZE(sama7g5_systemck); i++) {
hw = at91_clk_register_system(regmap, sama7g5_systemck[i].n,
sama7g5_systemck[i].p,
sama7g5_systemck[i].id);
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->shws[sama7g5_systemck[i].id] = hw;
}
for (i = 0; i < ARRAY_SIZE(sama7g5_periphck); i++) {
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sama7g5_pcr_layout,
sama7g5_periphck[i].n,
sama7g5_periphck[i].p,
sama7g5_periphck[i].id,
&sama7g5_periphck[i].r,
sama7g5_periphck[i].chgp ? 0 :
INT_MIN);
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->phws[sama7g5_periphck[i].id] = hw;
}
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
for (i = 0; i < ARRAY_SIZE(sama7g5_gck); i++) {
u8 num_parents = 3 + sama7g5_gck[i].pp_count;
u32 *mux_table;
mux_table = kmalloc_array(num_parents, sizeof(*mux_table),
GFP_KERNEL);
if (!mux_table)
goto err_free;
SAMA7G5_INIT_TABLE(mux_table, 3);
SAMA7G5_FILL_TABLE(&mux_table[3], sama7g5_gck[i].pp_mux_table,
sama7g5_gck[i].pp_count);
SAMA7G5_FILL_TABLE(&parent_names[3], sama7g5_gck[i].pp,
sama7g5_gck[i].pp_count);
hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
&sama7g5_pcr_layout,
sama7g5_gck[i].n,
parent_names, mux_table,
num_parents,
sama7g5_gck[i].id,
&sama7g5_gck[i].r,
sama7g5_gck[i].pp_chg_id);
if (IS_ERR(hw))
goto err_free;
sama7g5_pmc->ghws[sama7g5_gck[i].id] = hw;
alloc_mem[alloc_mem_size++] = mux_table;
}
of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sama7g5_pmc);
return;
err_free:
if (alloc_mem) {
for (i = 0; i < alloc_mem_size; i++)
kfree(alloc_mem[i]);
kfree(alloc_mem);
}
kfree(sama7g5_pmc);
}
/* Some clks are used for a clocksource */
CLK_OF_DECLARE(sama7g5_pmc, "microchip,sama7g5-pmc", sama7g5_pmc_setup);
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