// 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 = 125000000, .max = 200000000 }, .divisors = { 1, 2, 4, 3 }, }; static u8 plla_out[] = { 0 }; static u16 plla_icpll[] = { 0 }; static 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 { char *n; char *p; u8 id; } sama5d4_systemck[] = { { .n = "ddrck", .p = "masterck", .id = 2 }, { .n = "lcdck", .p = "masterck", .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; u8 id; } sama5d4_periphck[] = { { .n = "dma0_clk", .id = 8 }, { .n = "cpkcc_clk", .id = 10 }, { .n = "aesb_clk", .id = 13 }, { .n = "mpddr_clk", .id = 16 }, { .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 = syscon_node_to_regmap(np); if (IS_ERR(regmap)) return; sama5d4_pmc = pmc_data_allocate(PMC_MCK2 + 1, nck(sama5d4_systemck), nck(sama5d4_periph32ck), 0); 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, 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; 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; hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck"); 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(regmap, "masterck", 4, parent_names, &at91sam9x5_master_layout, &mck_characteristics); if (IS_ERR(hw)) goto err_free; sama5d4_pmc->chws[PMC_MCK] = hw; hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck"); 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] = "mck"; 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, 5, i, &at91sam9x5_programmable_layout); if (IS_ERR(hw)) goto err_free; } for (i = 0; i < ARRAY_SIZE(sama5d4_systemck); i++) { hw = at91_clk_register_system(regmap, sama5d4_systemck[i].n, sama5d4_systemck[i].p, sama5d4_systemck[i].id); 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_periphck[i].n, "masterck", sama5d4_periphck[i].id, &range); 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_periph32ck[i].n, "h32mxck", sama5d4_periph32ck[i].id, &range); 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: pmc_data_free(sama5d4_pmc); } CLK_OF_DECLARE_DRIVER(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup);