// SPDX-License-Identifier: GPL-2.0 #include #include #include #include #include #include #include #include #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 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 }, }; 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; 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; at91sam9x5_pmc = pmc_data_allocate(PMC_MAIN + 1, nck(at91sam9x5_systemck), nck(at91sam9x35_periphck), 0); 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; 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] = "mck"; for (i = 0; i < 2; i++) { char *name; name = xasprintf("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(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, at91sam9x5_periphck[i].n, "masterck", at91sam9x5_periphck[i].id, &range); 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, extra_pcks[i].n, "masterck", extra_pcks[i].id, &range); if (IS_ERR(hw)) goto err_free; at91sam9x5_pmc->phws[extra_pcks[i].id] = hw; } of_clk_add_provider(np, of_clk_hw_pmc_get, at91sam9x5_pmc); return; err_free: pmc_data_free(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);