1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2016 Atmel Corporation 4 * Wenyou.Yang <wenyou.yang@atmel.com> 5 */ 6 7 #include <common.h> 8 #include <clk-uclass.h> 9 #include <dm.h> 10 11 static int at91_slow_clk_enable(struct clk *clk) 12 { 13 return 0; 14 } 15 16 static ulong at91_slow_clk_get_rate(struct clk *clk) 17 { 18 return CONFIG_SYS_AT91_SLOW_CLOCK; 19 } 20 21 static struct clk_ops at91_slow_clk_ops = { 22 .enable = at91_slow_clk_enable, 23 .get_rate = at91_slow_clk_get_rate, 24 }; 25 26 static const struct udevice_id at91_slow_clk_match[] = { 27 { .compatible = "atmel,at91sam9x5-clk-slow" }, 28 {} 29 }; 30 31 U_BOOT_DRIVER(at91_slow_clk) = { 32 .name = "at91-slow-clk", 33 .id = UCLASS_CLK, 34 .of_match = at91_slow_clk_match, 35 .ops = &at91_slow_clk_ops, 36 }; 37