077782e3f2
Add support for parent_hw in utmi clock drivers. With this parent-child relation is described with pointers rather than strings making registration a bit faster. All the SoC based drivers that rely on clk-utmi were adapted to the new API change. The switch itself for SoCs will be done in subsequent patches. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Reviewed-by: Maxime Ripard <mripard@kernel.org> Link: https://lore.kernel.org/r/20230615093227.576102-8-claudiu.beznea@microchip.com
302 lines
7.8 KiB
C
302 lines
7.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#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(mck_lock);
|
|
|
|
static const struct clk_master_characteristics mck_characteristics = {
|
|
.output = { .min = 125000000, .max = 200000000 },
|
|
.divisors = { 1, 2, 4, 3 },
|
|
};
|
|
|
|
static u8 plla_out[] = { 0 };
|
|
|
|
static u16 plla_icpll[] = { 0 };
|
|
|
|
static const struct clk_range plla_outputs[] = {
|
|
{ .min = 600000000, .max = 1200000000 },
|
|
};
|
|
|
|
static const struct clk_pll_characteristics plla_characteristics = {
|
|
.input = { .min = 12000000, .max = 12000000 },
|
|
.num_output = ARRAY_SIZE(plla_outputs),
|
|
.output = plla_outputs,
|
|
.icpll = plla_icpll,
|
|
.out = plla_out,
|
|
};
|
|
|
|
static const struct clk_pcr_layout sama5d4_pcr_layout = {
|
|
.offset = 0x10c,
|
|
.cmd = BIT(12),
|
|
.pid_mask = GENMASK(6, 0),
|
|
};
|
|
|
|
static const struct {
|
|
char *n;
|
|
char *p;
|
|
unsigned long flags;
|
|
u8 id;
|
|
} sama5d4_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 = "lcdck", .p = "masterck_div", .id = 3 },
|
|
{ .n = "smdck", .p = "smdclk", .id = 4 },
|
|
{ .n = "uhpck", .p = "usbck", .id = 6 },
|
|
{ .n = "udpck", .p = "usbck", .id = 7 },
|
|
{ .n = "pck0", .p = "prog0", .id = 8 },
|
|
{ .n = "pck1", .p = "prog1", .id = 9 },
|
|
{ .n = "pck2", .p = "prog2", .id = 10 },
|
|
};
|
|
|
|
static const struct {
|
|
char *n;
|
|
u8 id;
|
|
} sama5d4_periph32ck[] = {
|
|
{ .n = "pioD_clk", .id = 5 },
|
|
{ .n = "usart0_clk", .id = 6 },
|
|
{ .n = "usart1_clk", .id = 7 },
|
|
{ .n = "icm_clk", .id = 9 },
|
|
{ .n = "aes_clk", .id = 12 },
|
|
{ .n = "tdes_clk", .id = 14 },
|
|
{ .n = "sha_clk", .id = 15 },
|
|
{ .n = "matrix1_clk", .id = 17 },
|
|
{ .n = "hsmc_clk", .id = 22 },
|
|
{ .n = "pioA_clk", .id = 23 },
|
|
{ .n = "pioB_clk", .id = 24 },
|
|
{ .n = "pioC_clk", .id = 25 },
|
|
{ .n = "pioE_clk", .id = 26 },
|
|
{ .n = "uart0_clk", .id = 27 },
|
|
{ .n = "uart1_clk", .id = 28 },
|
|
{ .n = "usart2_clk", .id = 29 },
|
|
{ .n = "usart3_clk", .id = 30 },
|
|
{ .n = "usart4_clk", .id = 31 },
|
|
{ .n = "twi0_clk", .id = 32 },
|
|
{ .n = "twi1_clk", .id = 33 },
|
|
{ .n = "twi2_clk", .id = 34 },
|
|
{ .n = "mci0_clk", .id = 35 },
|
|
{ .n = "mci1_clk", .id = 36 },
|
|
{ .n = "spi0_clk", .id = 37 },
|
|
{ .n = "spi1_clk", .id = 38 },
|
|
{ .n = "spi2_clk", .id = 39 },
|
|
{ .n = "tcb0_clk", .id = 40 },
|
|
{ .n = "tcb1_clk", .id = 41 },
|
|
{ .n = "tcb2_clk", .id = 42 },
|
|
{ .n = "pwm_clk", .id = 43 },
|
|
{ .n = "adc_clk", .id = 44 },
|
|
{ .n = "dbgu_clk", .id = 45 },
|
|
{ .n = "uhphs_clk", .id = 46 },
|
|
{ .n = "udphs_clk", .id = 47 },
|
|
{ .n = "ssc0_clk", .id = 48 },
|
|
{ .n = "ssc1_clk", .id = 49 },
|
|
{ .n = "trng_clk", .id = 53 },
|
|
{ .n = "macb0_clk", .id = 54 },
|
|
{ .n = "macb1_clk", .id = 55 },
|
|
{ .n = "fuse_clk", .id = 57 },
|
|
{ .n = "securam_clk", .id = 59 },
|
|
{ .n = "smd_clk", .id = 61 },
|
|
{ .n = "twi3_clk", .id = 62 },
|
|
{ .n = "catb_clk", .id = 63 },
|
|
};
|
|
|
|
static const struct {
|
|
char *n;
|
|
unsigned long flags;
|
|
u8 id;
|
|
} sama5d4_periphck[] = {
|
|
{ .n = "dma0_clk", .id = 8 },
|
|
{ .n = "cpkcc_clk", .id = 10 },
|
|
{ .n = "aesb_clk", .id = 13 },
|
|
/*
|
|
* 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 = 16, .flags = CLK_IS_CRITICAL },
|
|
{ .n = "matrix0_clk", .id = 18 },
|
|
{ .n = "vdec_clk", .id = 19 },
|
|
{ .n = "dma1_clk", .id = 50 },
|
|
{ .n = "lcdc_clk", .id = 51 },
|
|
{ .n = "isi_clk", .id = 52 },
|
|
};
|
|
|
|
static void __init sama5d4_pmc_setup(struct device_node *np)
|
|
{
|
|
struct clk_range range = CLK_RANGE(0, 0);
|
|
const char *slck_name, *mainxtal_name;
|
|
struct pmc_data *sama5d4_pmc;
|
|
const char *parent_names[5];
|
|
struct regmap *regmap;
|
|
struct clk_hw *hw;
|
|
int i;
|
|
bool bypass;
|
|
|
|
i = of_property_match_string(np, "clock-names", "slow_clk");
|
|
if (i < 0)
|
|
return;
|
|
|
|
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;
|
|
|
|
sama5d4_pmc = pmc_data_allocate(PMC_PLLACK + 1,
|
|
nck(sama5d4_systemck),
|
|
nck(sama5d4_periph32ck), 0, 3);
|
|
if (!sama5d4_pmc)
|
|
return;
|
|
|
|
hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
|
|
100000000);
|
|
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, NULL,
|
|
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, NULL, 2);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
|
|
&sama5d3_pll_layout, &plla_characteristics);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->chws[PMC_PLLACK] = hw;
|
|
|
|
hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck", NULL);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->chws[PMC_UTMI] = hw;
|
|
|
|
parent_names[0] = slck_name;
|
|
parent_names[1] = "mainck";
|
|
parent_names[2] = "plladivck";
|
|
parent_names[3] = "utmick";
|
|
hw = at91_clk_register_master_pres(regmap, "masterck_pres", 4,
|
|
parent_names, NULL,
|
|
&at91sam9x5_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,
|
|
&at91sam9x5_master_layout,
|
|
&mck_characteristics, &mck_lock,
|
|
CLK_SET_RATE_GATE, 0);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->chws[PMC_MCK] = hw;
|
|
|
|
hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck_div");
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->chws[PMC_MCK2] = hw;
|
|
|
|
parent_names[0] = "plladivck";
|
|
parent_names[1] = "utmick";
|
|
hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
parent_names[0] = "plladivck";
|
|
parent_names[1] = "utmick";
|
|
hw = at91sam9x5_clk_register_smd(regmap, "smdclk", parent_names, 2);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
parent_names[0] = slck_name;
|
|
parent_names[1] = "mainck";
|
|
parent_names[2] = "plladivck";
|
|
parent_names[3] = "utmick";
|
|
parent_names[4] = "masterck_div";
|
|
for (i = 0; i < 3; i++) {
|
|
char name[6];
|
|
|
|
snprintf(name, sizeof(name), "prog%d", i);
|
|
|
|
hw = at91_clk_register_programmable(regmap, name,
|
|
parent_names, NULL, 5, i,
|
|
&at91sam9x5_programmable_layout,
|
|
NULL);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->pchws[i] = hw;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sama5d4_systemck); i++) {
|
|
hw = at91_clk_register_system(regmap, sama5d4_systemck[i].n,
|
|
sama5d4_systemck[i].p, NULL,
|
|
sama5d4_systemck[i].id,
|
|
sama5d4_systemck[i].flags);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->shws[sama5d4_systemck[i].id] = hw;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sama5d4_periphck); i++) {
|
|
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
|
|
&sama5d4_pcr_layout,
|
|
sama5d4_periphck[i].n,
|
|
"masterck_div", NULL,
|
|
sama5d4_periphck[i].id,
|
|
&range, INT_MIN,
|
|
sama5d4_periphck[i].flags);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->phws[sama5d4_periphck[i].id] = hw;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(sama5d4_periph32ck); i++) {
|
|
hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
|
|
&sama5d4_pcr_layout,
|
|
sama5d4_periph32ck[i].n,
|
|
"h32mxck", NULL,
|
|
sama5d4_periph32ck[i].id,
|
|
&range, INT_MIN, 0);
|
|
if (IS_ERR(hw))
|
|
goto err_free;
|
|
|
|
sama5d4_pmc->phws[sama5d4_periph32ck[i].id] = hw;
|
|
}
|
|
|
|
of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sama5d4_pmc);
|
|
|
|
return;
|
|
|
|
err_free:
|
|
kfree(sama5d4_pmc);
|
|
}
|
|
|
|
CLK_OF_DECLARE(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup);
|