| // 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 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; |
| 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 = 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, |
| 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; |
| |
| sama5d4_pmc->chws[PMC_PLLACK] = hw; |
| |
| 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] = "masterck"; |
| 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, |
| 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, |
| 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_pcr_layout, |
| sama5d4_periphck[i].n, |
| "masterck", |
| sama5d4_periphck[i].id, |
| &range, INT_MIN); |
| 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", |
| sama5d4_periph32ck[i].id, |
| &range, INT_MIN); |
| 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_DRIVER(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup); |
