Orange Pi5 kernel

// 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 const struct clk_master_characteristics mck_characteristics = {
<------>.output = { .min = 0, .max = 133333333 },
<------>.divisors = { 1, 2, 4, 3 },
<------>.have_div3_pres = 1,
};
 
static u8 plla_out[] = { 0, 1, 2, 3, 0, 1, 2, 3 };
 
static u16 plla_icpll[] = { 0, 0, 0, 0, 1, 1, 1, 1 };
 
static const struct clk_range plla_outputs[] = {
<------>{ .min = 745000000, .max = 800000000 },
<------>{ .min = 695000000, .max = 750000000 },
<------>{ .min = 645000000, .max = 700000000 },
<------>{ .min = 595000000, .max = 650000000 },
<------>{ .min = 545000000, .max = 600000000 },
<------>{ .min = 495000000, .max = 555000000 },
<------>{ .min = 445000000, .max = 500000000 },
<------>{ .min = 400000000, .max = 450000000 },
};
 
static const struct clk_pll_characteristics plla_characteristics = {
<------>.input = { .min = 2000000, .max = 32000000 },
<------>.num_output = ARRAY_SIZE(plla_outputs),
<------>.output = plla_outputs,
<------>.icpll = plla_icpll,
<------>.out = plla_out,
};
 
static const struct {
<------>char *n;
<------>char *p;
<------>u8 id;
} at91sam9x5_systemck[] = {
<------>{ .n = "ddrck", .p = "masterck", .id = 2 },
<------>{ .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 },
};
 
static const struct clk_pcr_layout at91sam9x5_pcr_layout = {
<------>.offset = 0x10c,
<------>.cmd = BIT(12),
<------>.pid_mask = GENMASK(5, 0),
<------>.div_mask = GENMASK(17, 16),
};
 
struct pck {
<------>char *n;
<------>u8 id;
};
 
static const struct pck at91sam9x5_periphck[] = {
<------>{ .n = "pioAB_clk",  .id = 2, },
<------>{ .n = "pioCD_clk",  .id = 3, },
<------>{ .n = "smd_clk",    .id = 4, },
<------>{ .n = "usart0_clk", .id = 5, },
<------>{ .n = "usart1_clk", .id = 6, },
<------>{ .n = "usart2_clk", .id = 7, },
<------>{ .n = "twi0_clk",   .id = 9, },
<------>{ .n = "twi1_clk",   .id = 10, },
<------>{ .n = "twi2_clk",   .id = 11, },
<------>{ .n = "mci0_clk",   .id = 12, },
<------>{ .n = "spi0_clk",   .id = 13, },
<------>{ .n = "spi1_clk",   .id = 14, },
<------>{ .n = "uart0_clk",  .id = 15, },
<------>{ .n = "uart1_clk",  .id = 16, },
<------>{ .n = "tcb0_clk",   .id = 17, },
<------>{ .n = "pwm_clk",    .id = 18, },
<------>{ .n = "adc_clk",    .id = 19, },
<------>{ .n = "dma0_clk",   .id = 20, },
<------>{ .n = "dma1_clk",   .id = 21, },
<------>{ .n = "uhphs_clk",  .id = 22, },
<------>{ .n = "udphs_clk",  .id = 23, },
<------>{ .n = "mci1_clk",   .id = 26, },
<------>{ .n = "ssc0_clk",   .id = 28, },
};
 
static const struct pck at91sam9g15_periphck[] = {
<------>{ .n = "lcdc_clk", .id = 25, },
<------>{ /* sentinel */}
};
 
static const struct pck at91sam9g25_periphck[] = {
<------>{ .n = "usart3_clk", .id = 8, },
<------>{ .n = "macb0_clk", .id = 24, },
<------>{ .n = "isi_clk", .id = 25, },
<------>{ /* sentinel */}
};
 
static const struct pck at91sam9g35_periphck[] = {
<------>{ .n = "macb0_clk", .id = 24, },
<------>{ .n = "lcdc_clk", .id = 25, },
<------>{ /* sentinel */}
};
 
static const struct pck at91sam9x25_periphck[] = {
<------>{ .n = "usart3_clk", .id = 8, },
<------>{ .n = "macb0_clk", .id = 24, },
<------>{ .n = "macb1_clk", .id = 27, },
<------>{ .n = "can0_clk", .id = 29, },
<------>{ .n = "can1_clk", .id = 30, },
<------>{ /* sentinel */}
};
 
static const struct pck at91sam9x35_periphck[] = {
<------>{ .n = "macb0_clk", .id = 24, },
<------>{ .n = "lcdc_clk", .id = 25, },
<------>{ .n = "can0_clk", .id = 29, },
<------>{ .n = "can1_clk", .id = 30, },
<------>{ /* sentinel */}
};
 
static void __init at91sam9x5_pmc_setup(struct device_node *np,
<------><------><------><------><------>const struct pck *extra_pcks,
<------><------><------><------><------>bool has_lcdck)
{
<------>struct clk_range range = CLK_RANGE(0, 0);
<------>const char *slck_name, *mainxtal_name;
<------>struct pmc_data *at91sam9x5_pmc;
<------>const char *parent_names[6];
<------>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;
 
<------>at91sam9x5_pmc = pmc_data_allocate(PMC_PLLACK + 1,
<------><------><------><------><------>   nck(at91sam9x5_systemck), 31, 0, 2);
<------>if (!at91sam9x5_pmc)
<------><------>return;
 
<------>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;
 
<------>at91sam9x5_pmc->chws[PMC_MAIN] = hw;
 
<------>hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
<------><------><------><------>   &at91rm9200_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;
 
<------>at91sam9x5_pmc->chws[PMC_PLLACK] = hw;
 
<------>hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck");
<------>if (IS_ERR(hw))
<------><------>goto err_free;
 
<------>at91sam9x5_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(regmap, "masterck", 4, parent_names,
<------><------><------><------>      &at91sam9x5_master_layout,
<------><------><------><------>      &mck_characteristics);
<------>if (IS_ERR(hw))
<------><------>goto err_free;
 
<------>at91sam9x5_pmc->chws[PMC_MCK] = 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;
 
<------>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";
<------>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, 5, i,
<------><------><------><------><------><------>    &at91sam9x5_programmable_layout,
<------><------><------><------><------><------>    NULL);
<------><------>if (IS_ERR(hw))
<------><------><------>goto err_free;
 
<------><------>at91sam9x5_pmc->pchws[i] = hw;
<------>}
 
<------>for (i = 0; i < ARRAY_SIZE(at91sam9x5_systemck); i++) {
<------><------>hw = at91_clk_register_system(regmap, at91sam9x5_systemck[i].n,
<------><------><------><------><------>      at91sam9x5_systemck[i].p,
<------><------><------><------><------>      at91sam9x5_systemck[i].id);
<------><------>if (IS_ERR(hw))
<------><------><------>goto err_free;
 
<------><------>at91sam9x5_pmc->shws[at91sam9x5_systemck[i].id] = hw;
<------>}
 
<------>if (has_lcdck) {
<------><------>hw = at91_clk_register_system(regmap, "lcdck", "masterck", 3);
<------><------>if (IS_ERR(hw))
<------><------><------>goto err_free;
 
<------><------>at91sam9x5_pmc->shws[3] = hw;
<------>}
 
<------>for (i = 0; i < ARRAY_SIZE(at91sam9x5_periphck); i++) {
<------><------>hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
<------><------><------><------><------><------><------> &at91sam9x5_pcr_layout,
<------><------><------><------><------><------><------> at91sam9x5_periphck[i].n,
<------><------><------><------><------><------><------> "masterck",
<------><------><------><------><------><------><------> at91sam9x5_periphck[i].id,
<------><------><------><------><------><------><------> &range, INT_MIN);
<------><------>if (IS_ERR(hw))
<------><------><------>goto err_free;
 
<------><------>at91sam9x5_pmc->phws[at91sam9x5_periphck[i].id] = hw;
<------>}
 
<------>for (i = 0; extra_pcks[i].id; i++) {
<------><------>hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
<------><------><------><------><------><------><------> &at91sam9x5_pcr_layout,
<------><------><------><------><------><------><------> extra_pcks[i].n,
<------><------><------><------><------><------><------> "masterck",
<------><------><------><------><------><------><------> extra_pcks[i].id,
<------><------><------><------><------><------><------> &range, INT_MIN);
<------><------>if (IS_ERR(hw))
<------><------><------>goto err_free;
 
<------><------>at91sam9x5_pmc->phws[extra_pcks[i].id] = hw;
<------>}
 
<------>of_clk_add_hw_provider(np, of_clk_hw_pmc_get, at91sam9x5_pmc);
 
<------>return;
 
err_free:
<------>kfree(at91sam9x5_pmc);
}
 
static void __init at91sam9g15_pmc_setup(struct device_node *np)
{
<------>at91sam9x5_pmc_setup(np, at91sam9g15_periphck, true);
}
CLK_OF_DECLARE_DRIVER(at91sam9g15_pmc, "atmel,at91sam9g15-pmc",
<------><------>      at91sam9g15_pmc_setup);
 
static void __init at91sam9g25_pmc_setup(struct device_node *np)
{
<------>at91sam9x5_pmc_setup(np, at91sam9g25_periphck, false);
}
CLK_OF_DECLARE_DRIVER(at91sam9g25_pmc, "atmel,at91sam9g25-pmc",
<------><------>      at91sam9g25_pmc_setup);
 
static void __init at91sam9g35_pmc_setup(struct device_node *np)
{
<------>at91sam9x5_pmc_setup(np, at91sam9g35_periphck, true);
}
CLK_OF_DECLARE_DRIVER(at91sam9g35_pmc, "atmel,at91sam9g35-pmc",
<------><------>      at91sam9g35_pmc_setup);
 
static void __init at91sam9x25_pmc_setup(struct device_node *np)
{
<------>at91sam9x5_pmc_setup(np, at91sam9x25_periphck, false);
}
CLK_OF_DECLARE_DRIVER(at91sam9x25_pmc, "atmel,at91sam9x25-pmc",
<------><------>      at91sam9x25_pmc_setup);
 
static void __init at91sam9x35_pmc_setup(struct device_node *np)
{
<------>at91sam9x5_pmc_setup(np, at91sam9x35_periphck, true);
}
CLK_OF_DECLARE_DRIVER(at91sam9x35_pmc, "atmel,at91sam9x35-pmc",
<------><------>      at91sam9x35_pmc_setup);