2 * Copyright (C) 2012 Altera Corporation <www.altera.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #include <linux/clk.h>
18 #include <linux/clkdev.h>
19 #include <linux/clk-provider.h>
21 #define SOCFPGA_OSC1_CLK 10000000
22 #define SOCFPGA_MPU_CLK 800000000
23 #define SOCFPGA_MAIN_QSPI_CLK 432000000
24 #define SOCFPGA_MAIN_NAND_SDMMC_CLK 250000000
25 #define SOCFPGA_S2F_USR_CLK 125000000
27 void __init socfpga_init_clocks(void)
31 clk = clk_register_fixed_rate(NULL, "osc1_clk", NULL, CLK_IS_ROOT, SOCFPGA_OSC1_CLK);
32 clk_register_clkdev(clk, "osc1_clk", NULL);
34 clk = clk_register_fixed_rate(NULL, "mpu_clk", NULL, CLK_IS_ROOT, SOCFPGA_MPU_CLK);
35 clk_register_clkdev(clk, "mpu_clk", NULL);
37 clk = clk_register_fixed_rate(NULL, "main_clk", NULL, CLK_IS_ROOT, SOCFPGA_MPU_CLK/2);
38 clk_register_clkdev(clk, "main_clk", NULL);
40 clk = clk_register_fixed_rate(NULL, "dbg_base_clk", NULL, CLK_IS_ROOT, SOCFPGA_MPU_CLK/2);
41 clk_register_clkdev(clk, "dbg_base_clk", NULL);
43 clk = clk_register_fixed_rate(NULL, "main_qspi_clk", NULL, CLK_IS_ROOT, SOCFPGA_MAIN_QSPI_CLK);
44 clk_register_clkdev(clk, "main_qspi_clk", NULL);
46 clk = clk_register_fixed_rate(NULL, "main_nand_sdmmc_clk", NULL, CLK_IS_ROOT, SOCFPGA_MAIN_NAND_SDMMC_CLK);
47 clk_register_clkdev(clk, "main_nand_sdmmc_clk", NULL);
49 clk = clk_register_fixed_rate(NULL, "s2f_usr_clk", NULL, CLK_IS_ROOT, SOCFPGA_S2F_USR_CLK);
50 clk_register_clkdev(clk, "s2f_usr_clk", NULL);