1 /* 2 * Copyright (C) 2016 Atmel Corporation 3 * Wenyou.Yang <wenyou.yang@atmel.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <clk-uclass.h> 10 #include <dm/device.h> 11 #include <dm/lists.h> 12 #include <dm/root.h> 13 #include "pmc.h" 14 15 DECLARE_GLOBAL_DATA_PTR; 16 17 static int at91_pmc_bind(struct udevice *dev) 18 { 19 return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false); 20 } 21 22 static const struct udevice_id at91_pmc_match[] = { 23 { .compatible = "atmel,sama5d2-pmc" }, 24 {} 25 }; 26 27 U_BOOT_DRIVER(at91_pmc) = { 28 .name = "at91-pmc-core", 29 .id = UCLASS_CLK, 30 .of_match = at91_pmc_match, 31 .bind = at91_pmc_bind, 32 }; 33 34 int at91_pmc_core_probe(struct udevice *dev) 35 { 36 struct pmc_platdata *plat = dev_get_platdata(dev); 37 38 dev = dev_get_parent(dev); 39 40 plat->reg_base = (struct at91_pmc *)dev_get_addr_ptr(dev); 41 42 return 0; 43 } 44 45 int at91_pmc_clk_node_bind(struct udevice *dev) 46 { 47 const void *fdt = gd->fdt_blob; 48 int offset = dev->of_offset; 49 const char *name; 50 int ret; 51 52 for (offset = fdt_first_subnode(fdt, offset); 53 offset > 0; 54 offset = fdt_next_subnode(fdt, offset)) { 55 name = fdt_get_name(fdt, offset, NULL); 56 if (!name) 57 return -EINVAL; 58 59 ret = device_bind_driver_to_node(dev, "clk", name, 60 offset, NULL); 61 if (ret) 62 return ret; 63 } 64 65 return 0; 66 } 67 68 U_BOOT_DRIVER(clk_generic) = { 69 .id = UCLASS_CLK, 70 .name = "clk", 71 }; 72