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Merge tag 'clk-microchip-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into clk-microchip

Browse Source 
Pull Microchip clk driver updates from Claudiu Beznea:

 - support for the Microchip SAM9X7 SoC as follows:
 - updates on the PLL drivers
 - a new clock driver was added for SAM9X7
 - dt-binding documentation updates (for the new clock driver and for
   the slow clock controller that SAM9X7 is using)
 - a fix for the Microchip SAMA7G5 clock driver to avoid allocating mode
   than necessary memory

* tag 'clk-microchip-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  clk: at91: sama7g5: Allocate only the needed amount of memory for PLLs
  clk: at91: sam9x7: add sam9x7 pmc driver
  dt-bindings: clock: at91: Allow PLLs to be exported and referenced in DT
  clk: at91: sama7g5: move mux table macros to header file
  clk: at91: sam9x7: add support for HW PLL freq dividers
  clk: at91: clk-sam9x60-pll: re-factor to support individual core freq outputs
  dt-bindings: clocks: atmel,at91rm9200-pmc: add sam9x7 clock controller
  dt-bindings: clocks: atmel,at91sam9x5-sckc: add sam9x7
This commit is contained in:
Stephen Boyd
2024-09-03 13:03:10 -07:00
parent 8400291e28 2d6e9ee7cb
commit 1d777b05da
9 changed files with 1035 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/clock/atmel,at91rm9200-pmc.yaml
View File

@@ -42,6 +42,7 @@ properties:
- atmel,sama5d3-pmc
- atmel,sama5d4-pmc
- microchip,sam9x60-pmc
- microchip,sam9x7-pmc
- microchip,sama7g5-pmc
- const: syscon
@@ -88,6 +89,7 @@ allOf:
contains:
enum:
- microchip,sam9x60-pmc
- microchip,sam9x7-pmc
- microchip,sama7g5-pmc
then:
properties:

4
Documentation/devicetree/bindings/clock/atmel,at91sam9x5-sckc.yaml
View File

@@ -18,7 +18,9 @@ properties:
- atmel,sama5d4-sckc
- microchip,sam9x60-sckc
- items:
- const: microchip,sama7g5-sckc
- enum:
- microchip,sam9x7-sckc
- microchip,sama7g5-sckc
- const: microchip,sam9x60-sckc
reg:

1
drivers/clk/at91/Makefile
View File

@@ -20,6 +20,7 @@ obj-$(CONFIG_SOC_AT91SAM9) += at91sam9260.o at91sam9rl.o at91sam9x5.o dt-compat.
obj-$(CONFIG_SOC_AT91SAM9) += at91sam9g45.o dt-compat.o
obj-$(CONFIG_SOC_AT91SAM9) += at91sam9n12.o at91sam9x5.o dt-compat.o
obj-$(CONFIG_SOC_SAM9X60) += sam9x60.o
obj-$(CONFIG_SOC_SAM9X7) += sam9x7.o
obj-$(CONFIG_SOC_SAMA5D3) += sama5d3.o dt-compat.o
obj-$(CONFIG_SOC_SAMA5D4) += sama5d4.o dt-compat.o
obj-$(CONFIG_SOC_SAMA5D2) += sama5d2.o dt-compat.o

42
drivers/clk/at91/clk-sam9x60-pll.c
View File

@@ -23,9 +23,6 @@
#define UPLL_DIV 2
#define PLL_MUL_MAX (FIELD_GET(PMC_PLL_CTRL1_MUL_MSK, UINT_MAX) + 1)
#define FCORE_MIN (600000000)
#define FCORE_MAX (1200000000)
#define PLL_MAX_ID 7
struct sam9x60_pll_core {
@@ -76,9 +73,15 @@ static unsigned long sam9x60_frac_pll_recalc_rate(struct clk_hw *hw,
{
struct sam9x60_pll_core *core = to_sam9x60_pll_core(hw);
struct sam9x60_frac *frac = to_sam9x60_frac(core);
unsigned long freq;
return parent_rate * (frac->mul + 1) +
freq = parent_rate * (frac->mul + 1) +
DIV_ROUND_CLOSEST_ULL((u64)parent_rate * frac->frac, (1 << 22));
if (core->layout->div2)
freq >>= 1;
return freq;
}
static int sam9x60_frac_pll_set(struct sam9x60_pll_core *core)
@@ -194,7 +197,8 @@ static long sam9x60_frac_pll_compute_mul_frac(struct sam9x60_pll_core *core,
unsigned long nmul = 0;
unsigned long nfrac = 0;
if (rate < FCORE_MIN || rate > FCORE_MAX)
if (rate < core->characteristics->core_output[0].min ||
rate > core->characteristics->core_output[0].max)
return -ERANGE;
/*
@@ -214,7 +218,8 @@ static long sam9x60_frac_pll_compute_mul_frac(struct sam9x60_pll_core *core,
}
/* Check if resulted rate is a valid. */
if (tmprate < FCORE_MIN || tmprate > FCORE_MAX)
if (tmprate < core->characteristics->core_output[0].min ||
tmprate > core->characteristics->core_output[0].max)
return -ERANGE;
if (update) {
@@ -433,6 +438,12 @@ static unsigned long sam9x60_div_pll_recalc_rate(struct clk_hw *hw,
return DIV_ROUND_CLOSEST_ULL(parent_rate, (div->div + 1));
}
static unsigned long sam9x60_fixed_div_pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
return parent_rate >> 1;
}
static long sam9x60_div_pll_compute_div(struct sam9x60_pll_core *core,
unsigned long *parent_rate,
unsigned long rate)
@@ -607,6 +618,16 @@ static const struct clk_ops sam9x60_div_pll_ops_chg = {
.restore_context = sam9x60_div_pll_restore_context,
};
static const struct clk_ops sam9x60_fixed_div_pll_ops = {
.prepare = sam9x60_div_pll_prepare,
.unprepare = sam9x60_div_pll_unprepare,
.is_prepared = sam9x60_div_pll_is_prepared,
.recalc_rate = sam9x60_fixed_div_pll_recalc_rate,
.round_rate = sam9x60_div_pll_round_rate,
.save_context = sam9x60_div_pll_save_context,
.restore_context = sam9x60_div_pll_restore_context,
};
struct clk_hw * __init
sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
const char *name, const char *parent_name,
@@ -669,7 +690,8 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock,
goto free;
}
ret = sam9x60_frac_pll_compute_mul_frac(&frac->core, FCORE_MIN,
ret = sam9x60_frac_pll_compute_mul_frac(&frac->core,
characteristics->core_output[0].min,
parent_rate, true);
if (ret < 0) {
hw = ERR_PTR(ret);
@@ -725,10 +747,14 @@ sam9x60_clk_register_div_pll(struct regmap *regmap, spinlock_t *lock,
else
init.parent_names = &parent_name;
init.num_parents = 1;
if (flags & CLK_SET_RATE_GATE)
if (layout->div2)
init.ops = &sam9x60_fixed_div_pll_ops;
else if (flags & CLK_SET_RATE_GATE)
init.ops = &sam9x60_div_pll_ops;
else
init.ops = &sam9x60_div_pll_ops_chg;
init.flags = flags;
div->core.id = id;

18
drivers/clk/at91/pmc.h
View File

@@ -64,6 +64,7 @@ struct clk_pll_layout {
u8 frac_shift;
u8 div_shift;
u8 endiv_shift;
u8 div2;
};
extern const struct clk_pll_layout at91rm9200_pll_layout;
@@ -75,6 +76,7 @@ struct clk_pll_characteristics {
struct clk_range input;
int num_output;
const struct clk_range *output;
const struct clk_range *core_output;
u16 *icpll;
u8 *out;
u8 upll : 1;
@@ -119,6 +121,22 @@ struct at91_clk_pms {
#define ndck(a, s) (a[s - 1].id + 1)
#define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1)
#define PMC_INIT_TABLE(_table, _count) \
do { \
u8 _i; \
for (_i = 0; _i < (_count); _i++) \
(_table)[_i] = _i; \
} while (0)
#define PMC_FILL_TABLE(_to, _from, _count) \
do { \
u8 _i; \
for (_i = 0; _i < (_count); _i++) { \
(_to)[_i] = (_from)[_i]; \
} \
} while (0)
struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,
unsigned int nperiph, unsigned int ngck,
unsigned int npck);

7
drivers/clk/at91/sam9x60.c
View File

@@ -26,10 +26,16 @@ static const struct clk_range plla_outputs[] = {
{ .min = 2343750, .max = 1200000000 },
};
/* Fractional PLL core output range. */
static const struct clk_range core_outputs[] = {
{ .min = 600000000, .max = 1200000000 },
};
static const struct clk_pll_characteristics plla_characteristics = {
.input = { .min = 12000000, .max = 48000000 },
.num_output = ARRAY_SIZE(plla_outputs),
.output = plla_outputs,
.core_output = core_outputs,
};
static const struct clk_range upll_outputs[] = {
@@ -40,6 +46,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
.input = { .min = 12000000, .max = 48000000 },
.num_output = ARRAY_SIZE(upll_outputs),
.output = upll_outputs,
.core_output = core_outputs,
.upll = true,
};

946
drivers/clk/at91/sam9x7.c Normal file
View File

@@ -0,0 +1,946 @@
// SPDX-License-Identifier: GPL-2.0
/*
* SAM9X7 PMC code.
*
* Copyright (C) 2023 Microchip Technology Inc. and its subsidiaries
*
* Author: Varshini Rajendran <varshini.rajendran@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"
static DEFINE_SPINLOCK(pmc_pll_lock);
static DEFINE_SPINLOCK(mck_lock);
/**
* enum pll_ids - PLL clocks identifiers
* @PLL_ID_PLLA: PLLA identifier
* @PLL_ID_UPLL: UPLL identifier
* @PLL_ID_AUDIO: Audio PLL identifier
* @PLL_ID_LVDS: LVDS PLL identifier
* @PLL_ID_PLLA_DIV2: PLLA DIV2 identifier
* @PLL_ID_MAX: Max PLL Identifier
*/
enum pll_ids {
PLL_ID_PLLA,
PLL_ID_UPLL,
PLL_ID_AUDIO,
PLL_ID_LVDS,
PLL_ID_PLLA_DIV2,
PLL_ID_MAX,
};
/**
* enum pll_type - PLL type identifiers
* @PLL_TYPE_FRAC: fractional PLL identifier
* @PLL_TYPE_DIV: divider PLL identifier
*/
enum pll_type {
PLL_TYPE_FRAC,
PLL_TYPE_DIV,
};
static const struct clk_master_characteristics mck_characteristics = {
.output = { .min = 32000000, .max = 266666667 },
.divisors = { 1, 2, 4, 3, 5},
.have_div3_pres = 1,
};
static const struct clk_master_layout sam9x7_master_layout = {
.mask = 0x373,
.pres_shift = 4,
.offset = 0x28,
};
/* Fractional PLL core output range. */
static const struct clk_range plla_core_outputs[] = {
{ .min = 375000000, .max = 1600000000 },
};
static const struct clk_range upll_core_outputs[] = {
{ .min = 600000000, .max = 1200000000 },
};
static const struct clk_range lvdspll_core_outputs[] = {
{ .min = 400000000, .max = 800000000 },
};
static const struct clk_range audiopll_core_outputs[] = {
{ .min = 400000000, .max = 800000000 },
};
static const struct clk_range plladiv2_core_outputs[] = {
{ .min = 375000000, .max = 1600000000 },
};
/* Fractional PLL output range. */
static const struct clk_range plla_outputs[] = {
{ .min = 732421, .max = 800000000 },
};
static const struct clk_range upll_outputs[] = {
{ .min = 300000000, .max = 600000000 },
};
static const struct clk_range lvdspll_outputs[] = {
{ .min = 10000000, .max = 800000000 },
};
static const struct clk_range audiopll_outputs[] = {
{ .min = 10000000, .max = 800000000 },
};
static const struct clk_range plladiv2_outputs[] = {
{ .min = 366210, .max = 400000000 },
};
/* PLL characteristics. */
static const struct clk_pll_characteristics plla_characteristics = {
.input = { .min = 20000000, .max = 50000000 },
.num_output = ARRAY_SIZE(plla_outputs),
.output = plla_outputs,
.core_output = plla_core_outputs,
};
static const struct clk_pll_characteristics upll_characteristics = {
.input = { .min = 20000000, .max = 50000000 },
.num_output = ARRAY_SIZE(upll_outputs),
.output = upll_outputs,
.core_output = upll_core_outputs,
.upll = true,
};
static const struct clk_pll_characteristics lvdspll_characteristics = {
.input = { .min = 20000000, .max = 50000000 },
.num_output = ARRAY_SIZE(lvdspll_outputs),
.output = lvdspll_outputs,
.core_output = lvdspll_core_outputs,
};
static const struct clk_pll_characteristics audiopll_characteristics = {
.input = { .min = 20000000, .max = 50000000 },
.num_output = ARRAY_SIZE(audiopll_outputs),
.output = audiopll_outputs,
.core_output = audiopll_core_outputs,
};
static const struct clk_pll_characteristics plladiv2_characteristics = {
.input = { .min = 20000000, .max = 50000000 },
.num_output = ARRAY_SIZE(plladiv2_outputs),
.output = plladiv2_outputs,
.core_output = plladiv2_core_outputs,
};
/* Layout for fractional PLL ID PLLA. */
static const struct clk_pll_layout plla_frac_layout = {
.mul_mask = GENMASK(31, 24),
.frac_mask = GENMASK(21, 0),
.mul_shift = 24,
.frac_shift = 0,
.div2 = 1,
};
/* Layout for fractional PLLs. */
static const struct clk_pll_layout pll_frac_layout = {
.mul_mask = GENMASK(31, 24),
.frac_mask = GENMASK(21, 0),
.mul_shift = 24,
.frac_shift = 0,
};
/* Layout for DIV PLLs. */
static const struct clk_pll_layout pll_divpmc_layout = {
.div_mask = GENMASK(7, 0),
.endiv_mask = BIT(29),
.div_shift = 0,
.endiv_shift = 29,
};
/* Layout for DIV PLL ID PLLADIV2. */
static const struct clk_pll_layout plladiv2_divpmc_layout = {
.div_mask = GENMASK(7, 0),
.endiv_mask = BIT(29),
.div_shift = 0,
.endiv_shift = 29,
.div2 = 1,
};
/* Layout for DIVIO dividers. */
static const struct clk_pll_layout pll_divio_layout = {
.div_mask = GENMASK(19, 12),
.endiv_mask = BIT(30),
.div_shift = 12,
.endiv_shift = 30,
};
/*
* PLL clocks description
* @n: clock name
* @p: clock parent
* @l: clock layout
* @t: clock type
* @c: pll characteristics
* @f: clock flags
* @eid: export index in sam9x7->chws[] array
*/
static const struct {
const char *n;
const char *p;
const struct clk_pll_layout *l;
u8 t;
const struct clk_pll_characteristics *c;
unsigned long f;
u8 eid;
} sam9x7_plls[][3] = {
[PLL_ID_PLLA] = {
{
.n = "plla_fracck",
.p = "mainck",
.l = &plla_frac_layout,
.t = PLL_TYPE_FRAC,
/*
* This feeds plla_divpmcck which feeds CPU. It should
* not be disabled.
*/
.f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE,
.c = &plla_characteristics,
},
{
.n = "plla_divpmcck",
.p = "plla_fracck",
.l = &pll_divpmc_layout,
.t = PLL_TYPE_DIV,
/* This feeds CPU. It should not be disabled */
.f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE,
.eid = PMC_PLLACK,
.c = &plla_characteristics,
},
},
[PLL_ID_UPLL] = {
{
.n = "upll_fracck",
.p = "main_osc",
.l = &pll_frac_layout,
.t = PLL_TYPE_FRAC,
.f = CLK_SET_RATE_GATE,
.c = &upll_characteristics,
},
{
.n = "upll_divpmcck",
.p = "upll_fracck",
.l = &pll_divpmc_layout,
.t = PLL_TYPE_DIV,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT,
.eid = PMC_UTMI,
.c = &upll_characteristics,
},
},
[PLL_ID_AUDIO] = {
{
.n = "audiopll_fracck",
.p = "main_osc",
.l = &pll_frac_layout,
.f = CLK_SET_RATE_GATE,
.c = &audiopll_characteristics,
.t = PLL_TYPE_FRAC,
},
{
.n = "audiopll_divpmcck",
.p = "audiopll_fracck",
.l = &pll_divpmc_layout,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT,
.c = &audiopll_characteristics,
.eid = PMC_AUDIOPMCPLL,
.t = PLL_TYPE_DIV,
},
{
.n = "audiopll_diviock",
.p = "audiopll_fracck",
.l = &pll_divio_layout,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT,
.c = &audiopll_characteristics,
.eid = PMC_AUDIOIOPLL,
.t = PLL_TYPE_DIV,
},
},
[PLL_ID_LVDS] = {
{
.n = "lvdspll_fracck",
.p = "main_osc",
.l = &pll_frac_layout,
.f = CLK_SET_RATE_GATE,
.c = &lvdspll_characteristics,
.t = PLL_TYPE_FRAC,
},
{
.n = "lvdspll_divpmcck",
.p = "lvdspll_fracck",
.l = &pll_divpmc_layout,
.f = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
CLK_SET_RATE_PARENT,
.c = &lvdspll_characteristics,
.eid = PMC_LVDSPLL,
.t = PLL_TYPE_DIV,
},
},
[PLL_ID_PLLA_DIV2] = {
{
.n = "plla_div2pmcck",
.p = "plla_fracck",
.l = &plladiv2_divpmc_layout,
/*
* This may feed critical parts of the system like timers.
* It should not be disabled.
*/
.f = CLK_IS_CRITICAL | CLK_SET_RATE_GATE,
.c = &plladiv2_characteristics,
.eid = PMC_PLLADIV2,
.t = PLL_TYPE_DIV,
},
},
};
static const struct clk_programmable_layout sam9x7_programmable_layout = {
.pres_mask = 0xff,
.pres_shift = 8,
.css_mask = 0x1f,
.have_slck_mck = 0,
.is_pres_direct = 1,
};
static const struct clk_pcr_layout sam9x7_pcr_layout = {
.offset = 0x88,
.cmd = BIT(31),
.gckcss_mask = GENMASK(12, 8),
.pid_mask = GENMASK(6, 0),
};
static const struct {
char *n;
char *p;
u8 id;
unsigned long flags;
} sam9x7_systemck[] = {
/*
* ddrck feeds DDR controller and is enabled by bootloader thus we need
* to keep it enabled in case there is no Linux consumer for it.
*/
{ .n = "ddrck", .p = "masterck_div", .id = 2, .flags = CLK_IS_CRITICAL },
{ .n = "uhpck", .p = "usbck", .id = 6 },
{ .n = "pck0", .p = "prog0", .id = 8 },
{ .n = "pck1", .p = "prog1", .id = 9 },
};
/*
* Peripheral clocks description
* @n: clock name
* @f: clock flags
* @id: peripheral id
*/
static const struct {
char *n;
unsigned long f;
u8 id;
} sam9x7_periphck[] = {
{ .n = "pioA_clk", .id = 2, },
{ .n = "pioB_clk", .id = 3, },
{ .n = "pioC_clk", .id = 4, },
{ .n = "flex0_clk", .id = 5, },
{ .n = "flex1_clk", .id = 6, },
{ .n = "flex2_clk", .id = 7, },
{ .n = "flex3_clk", .id = 8, },
{ .n = "flex6_clk", .id = 9, },
{ .n = "flex7_clk", .id = 10, },
{ .n = "flex8_clk", .id = 11, },
{ .n = "sdmmc0_clk", .id = 12, },
{ .n = "flex4_clk", .id = 13, },
{ .n = "flex5_clk", .id = 14, },
{ .n = "flex9_clk", .id = 15, },
{ .n = "flex10_clk", .id = 16, },
{ .n = "tcb0_clk", .id = 17, },
{ .n = "pwm_clk", .id = 18, },
{ .n = "adc_clk", .id = 19, },
{ .n = "dma0_clk", .id = 20, },
{ .n = "uhphs_clk", .id = 22, },
{ .n = "udphs_clk", .id = 23, },
{ .n = "macb0_clk", .id = 24, },
{ .n = "lcd_clk", .id = 25, },
{ .n = "sdmmc1_clk", .id = 26, },
{ .n = "ssc_clk", .id = 28, },
{ .n = "can0_clk", .id = 29, },
{ .n = "can1_clk", .id = 30, },
{ .n = "flex11_clk", .id = 32, },
{ .n = "flex12_clk", .id = 33, },
{ .n = "i2s_clk", .id = 34, },
{ .n = "qspi_clk", .id = 35, },
{ .n = "gfx2d_clk", .id = 36, },
{ .n = "pit64b0_clk", .id = 37, },
{ .n = "trng_clk", .id = 38, },
{ .n = "aes_clk", .id = 39, },
{ .n = "tdes_clk", .id = 40, },
{ .n = "sha_clk", .id = 41, },
{ .n = "classd_clk", .id = 42, },
{ .n = "isi_clk", .id = 43, },
{ .n = "pioD_clk", .id = 44, },
{ .n = "tcb1_clk", .id = 45, },
{ .n = "dbgu_clk", .id = 47, },
/*
* mpddr_clk feeds DDR controller and is enabled by bootloader thus we
* need to keep it enabled in case there is no Linux consumer for it.
*/
{ .n = "mpddr_clk", .id = 49, .f = CLK_IS_CRITICAL },
{ .n = "csi2dc_clk", .id = 52, },
{ .n = "csi4l_clk", .id = 53, },
{ .n = "dsi4l_clk", .id = 54, },
{ .n = "lvdsc_clk", .id = 56, },
{ .n = "pit64b1_clk", .id = 58, },
{ .n = "puf_clk", .id = 59, },
{ .n = "gmactsu_clk", .id = 67, },
};
/*
* 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 parent 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;
} sam9x7_gck[] = {
{
.n = "flex0_gclk",
.id = 5,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex1_gclk",
.id = 6,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex2_gclk",
.id = 7,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex3_gclk",
.id = 8,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex6_gclk",
.id = 9,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex7_gclk",
.id = 10,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex8_gclk",
.id = 11,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "sdmmc0_gclk",
.id = 12,
.r = { .max = 105000000 },
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "flex4_gclk",
.id = 13,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex5_gclk",
.id = 14,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex9_gclk",
.id = 15,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex10_gclk",
.id = 16,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "tcb0_gclk",
.id = 17,
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "adc_gclk",
.id = 19,
.pp = { "upll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "lcd_gclk",
.id = 25,
.r = { .max = 75000000 },
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "sdmmc1_gclk",
.id = 26,
.r = { .max = 105000000 },
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "mcan0_gclk",
.id = 29,
.r = { .max = 80000000 },
.pp = { "upll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "mcan1_gclk",
.id = 30,
.r = { .max = 80000000 },
.pp = { "upll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 5, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "flex11_gclk",
.id = 32,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "flex12_gclk",
.id = 33,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "i2s_gclk",
.id = 34,
.r = { .max = 100000000 },
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "qspi_gclk",
.id = 35,
.r = { .max = 200000000 },
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "pit64b0_gclk",
.id = 37,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "classd_gclk",
.id = 42,
.r = { .max = 100000000 },
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "tcb1_gclk",
.id = 45,
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
{
.n = "dbgu_gclk",
.id = 47,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "mipiphy_gclk",
.id = 55,
.r = { .max = 27000000 },
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "pit64b1_gclk",
.id = 58,
.pp = { "plla_div2pmcck", },
.pp_mux_table = { 8, },
.pp_count = 1,
.pp_chg_id = INT_MIN,
},
{
.n = "gmac_gclk",
.id = 67,
.pp = { "audiopll_divpmcck", "plla_div2pmcck", },
.pp_mux_table = { 6, 8, },
.pp_count = 2,
.pp_chg_id = INT_MIN,
},
};
static void __init sam9x7_pmc_setup(struct device_node *np)
{
struct clk_range range = CLK_RANGE(0, 0);
const char *td_slck_name, *md_slck_name, *mainxtal_name;
struct pmc_data *sam9x7_pmc;
const char *parent_names[9];
void **clk_mux_buffer = NULL;
int clk_mux_buffer_size = 0;
struct clk_hw *main_osc_hw;
struct regmap *regmap;
struct clk_hw *hw;
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;
sam9x7_pmc = pmc_data_allocate(PMC_LVDSPLL + 1,
nck(sam9x7_systemck),
nck(sam9x7_periphck),
nck(sam9x7_gck), 8);
if (!sam9x7_pmc)
return;
clk_mux_buffer = kmalloc(sizeof(void *) *
(ARRAY_SIZE(sam9x7_gck)),
GFP_KERNEL);
if (!clk_mux_buffer)
goto err_free;
hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
50000000);
if (IS_ERR(hw))
goto err_free;
hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, NULL, 0);
if (IS_ERR(hw))
goto err_free;
main_osc_hw = hw;
parent_names[0] = "main_rc_osc";
parent_names[1] = "main_osc";
hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, NULL, 2);
if (IS_ERR(hw))
goto err_free;
sam9x7_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 (!sam9x7_plls[i][j].n)
continue;
switch (sam9x7_plls[i][j].t) {
case PLL_TYPE_FRAC:
if (!strcmp(sam9x7_plls[i][j].p, "mainck"))
parent_hw = sam9x7_pmc->chws[PMC_MAIN];
else if (!strcmp(sam9x7_plls[i][j].p, "main_osc"))
parent_hw = main_osc_hw;
else
parent_hw = __clk_get_hw(of_clk_get_by_name
(np, sam9x7_plls[i][j].p));
hw = sam9x60_clk_register_frac_pll(regmap,
&pmc_pll_lock,
sam9x7_plls[i][j].n,
sam9x7_plls[i][j].p,
parent_hw, i,
sam9x7_plls[i][j].c,
sam9x7_plls[i][j].l,
sam9x7_plls[i][j].f);
break;
case PLL_TYPE_DIV:
hw = sam9x60_clk_register_div_pll(regmap,
&pmc_pll_lock,
sam9x7_plls[i][j].n,
sam9x7_plls[i][j].p, NULL, i,
sam9x7_plls[i][j].c,
sam9x7_plls[i][j].l,
sam9x7_plls[i][j].f, 0);
break;
default:
continue;
}
if (IS_ERR(hw))
goto err_free;
if (sam9x7_plls[i][j].eid)
sam9x7_pmc->chws[sam9x7_plls[i][j].eid] = hw;
}
}
parent_names[0] = md_slck_name;
parent_names[1] = "mainck";
parent_names[2] = "plla_divpmcck";
parent_names[3] = "upll_divpmcck";
hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
parent_names, NULL, &sam9x7_master_layout,
&mck_characteristics, &mck_lock);
if (IS_ERR(hw))
goto err_free;
hw = at91_clk_register_master_div(regmap, "masterck_div",
"masterck_pres", NULL, &sam9x7_master_layout,
&mck_characteristics, &mck_lock,
CLK_SET_RATE_GATE, 0);
if (IS_ERR(hw))
goto err_free;
sam9x7_pmc->chws[PMC_MCK] = hw;
parent_names[0] = "plla_divpmcck";
parent_names[1] = "upll_divpmcck";
parent_names[2] = "main_osc";
hw = sam9x60_clk_register_usb(regmap, "usbck", parent_names, 3);
if (IS_ERR(hw))
goto err_free;
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
parent_names[3] = "masterck_div";
parent_names[4] = "plla_divpmcck";
parent_names[5] = "upll_divpmcck";
parent_names[6] = "audiopll_divpmcck";
for (i = 0; i < 2; i++) {
char name[6];
snprintf(name, sizeof(name), "prog%d", i);
hw = at91_clk_register_programmable(regmap, name,
parent_names, NULL, 7, i,
&sam9x7_programmable_layout,
NULL);
if (IS_ERR(hw))
goto err_free;
sam9x7_pmc->pchws[i] = hw;
}
for (i = 0; i < ARRAY_SIZE(sam9x7_systemck); i++) {
hw = at91_clk_register_system(regmap, sam9x7_systemck[i].n,
sam9x7_systemck[i].p, NULL,
sam9x7_systemck[i].id,
sam9x7_systemck[i].flags);
if (IS_ERR(hw))
goto err_free;
sam9x7_pmc->shws[sam9x7_systemck[i].id] = hw;
}
for (i = 0; i < ARRAY_SIZE(sam9x7_periphck); i++) {
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
&sam9x7_pcr_layout,
sam9x7_periphck[i].n,
"masterck_div", NULL,
sam9x7_periphck[i].id,
&range, INT_MIN,
sam9x7_periphck[i].f);
if (IS_ERR(hw))
goto err_free;
sam9x7_pmc->phws[sam9x7_periphck[i].id] = hw;
}
parent_names[0] = md_slck_name;
parent_names[1] = td_slck_name;
parent_names[2] = "mainck";
parent_names[3] = "masterck_div";
for (i = 0; i < ARRAY_SIZE(sam9x7_gck); i++) {
u8 num_parents = 4 + sam9x7_gck[i].pp_count;
u32 *mux_table;
mux_table = kmalloc_array(num_parents, sizeof(*mux_table),
GFP_KERNEL);
if (!mux_table)
goto err_free;
PMC_INIT_TABLE(mux_table, 4);
PMC_FILL_TABLE(&mux_table[4], sam9x7_gck[i].pp_mux_table,
sam9x7_gck[i].pp_count);
PMC_FILL_TABLE(&parent_names[4], sam9x7_gck[i].pp,
sam9x7_gck[i].pp_count);
hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
&sam9x7_pcr_layout,
sam9x7_gck[i].n,
parent_names, NULL, mux_table,
num_parents,
sam9x7_gck[i].id,
&sam9x7_gck[i].r,
sam9x7_gck[i].pp_chg_id);
if (IS_ERR(hw))
goto err_free;
sam9x7_pmc->ghws[sam9x7_gck[i].id] = hw;
clk_mux_buffer[clk_mux_buffer_size++] = mux_table;
}
of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sam9x7_pmc);
kfree(clk_mux_buffer);
return;
err_free:
if (clk_mux_buffer) {
for (i = 0; i < clk_mux_buffer_size; i++)
kfree(clk_mux_buffer[i]);
kfree(clk_mux_buffer);
}
kfree(sam9x7_pmc);
}
/* Some clks are used for a clocksource */
CLK_OF_DECLARE(sam9x7_pmc, "microchip,sam9x7-pmc", sam9x7_pmc_setup);

47
drivers/clk/at91/sama7g5.c
View File

@@ -16,21 +16,6 @@
#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);
@@ -66,6 +51,7 @@ enum pll_component_id {
PLL_COMPID_FRAC,
PLL_COMPID_DIV0,
PLL_COMPID_DIV1,
PLL_COMPID_MAX,
};
/*
@@ -116,11 +102,17 @@ static const struct clk_range pll_outputs[] = {
{ .min = 2343750, .max = 1200000000 },
};
/* Fractional PLL core output range. */
static const struct clk_range core_outputs[] = {
{ .min = 600000000, .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,
.core_output = core_outputs,
};
/* PLL characteristics. */
@@ -128,6 +120,7 @@ static const struct clk_pll_characteristics pll_characteristics = {
.input = { .min = 12000000, .max = 50000000 },
.num_output = ARRAY_SIZE(pll_outputs),
.output = pll_outputs,
.core_output = core_outputs,
};
/*
@@ -165,7 +158,7 @@ static struct sama7g5_pll {
u8 t;
u8 eid;
u8 safe_div;
} sama7g5_plls[][PLL_ID_MAX] = {
} sama7g5_plls[][PLL_COMPID_MAX] = {
[PLL_ID_CPU] = {
[PLL_COMPID_FRAC] = {
.n = "cpupll_fracck",
@@ -1038,7 +1031,7 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
sama7g5_pmc->chws[PMC_MAIN] = hw;
for (i = 0; i < PLL_ID_MAX; i++) {
for (j = 0; j < 3; j++) {
for (j = 0; j < PLL_COMPID_MAX; j++) {
struct clk_hw *parent_hw;
if (!sama7g5_plls[i][j].n)
@@ -1112,17 +1105,17 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
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);
PMC_INIT_TABLE(mux_table, 3);
PMC_FILL_TABLE(&mux_table[3], sama7g5_mckx[i].ep_mux_table,
sama7g5_mckx[i].ep_count);
for (j = 0; j < sama7g5_mckx[i].ep_count; j++) {
u8 pll_id = sama7g5_mckx[i].ep[j].pll_id;
u8 pll_compid = sama7g5_mckx[i].ep[j].pll_compid;
tmp_parent_hws[j] = sama7g5_plls[pll_id][pll_compid].hw;
}
SAMA7G5_FILL_TABLE(&parent_hws[3], tmp_parent_hws,
sama7g5_mckx[i].ep_count);
PMC_FILL_TABLE(&parent_hws[3], tmp_parent_hws,
sama7g5_mckx[i].ep_count);
hw = at91_clk_sama7g5_register_master(regmap, sama7g5_mckx[i].n,
num_parents, NULL, parent_hws, mux_table,
@@ -1208,17 +1201,17 @@ static void __init sama7g5_pmc_setup(struct device_node *np)
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);
PMC_INIT_TABLE(mux_table, 3);
PMC_FILL_TABLE(&mux_table[3], sama7g5_gck[i].pp_mux_table,
sama7g5_gck[i].pp_count);
for (j = 0; j < sama7g5_gck[i].pp_count; j++) {
u8 pll_id = sama7g5_gck[i].pp[j].pll_id;
u8 pll_compid = sama7g5_gck[i].pp[j].pll_compid;
tmp_parent_hws[j] = sama7g5_plls[pll_id][pll_compid].hw;
}
SAMA7G5_FILL_TABLE(&parent_hws[3], tmp_parent_hws,
sama7g5_gck[i].pp_count);
PMC_FILL_TABLE(&parent_hws[3], tmp_parent_hws,
sama7g5_gck[i].pp_count);
hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
&sama7g5_pcr_layout,

4
include/dt-bindings/clock/at91.h
View File

@@ -38,6 +38,10 @@
#define PMC_CPU (PMC_MAIN + 9)
#define PMC_MCK1 (PMC_MAIN + 10)
/* SAM9X7 */
#define PMC_PLLADIV2 (PMC_MAIN + 11)
#define PMC_LVDSPLL (PMC_MAIN + 12)
#ifndef AT91_PMC_MOSCS
#define AT91_PMC_MOSCS 0 /* MOSCS Flag */
#define AT91_PMC_LOCKA 1 /* PLLA Lock */