1 #include <linux/clk.h> 2 #include <linux/compiler.h> 3 #include <linux/slab.h> 4 #include <linux/io.h> 5 #include <linux/clkdev.h> 6 #include <asm/clock.h> 7 8 static struct clk master_clk = { 9 .flags = CLK_ENABLE_ON_INIT, 10 .rate = CONFIG_SH_PCLK_FREQ, 11 }; 12 13 static struct clk peripheral_clk = { 14 .parent = &master_clk, 15 .flags = CLK_ENABLE_ON_INIT, 16 }; 17 18 static struct clk bus_clk = { 19 .parent = &master_clk, 20 .flags = CLK_ENABLE_ON_INIT, 21 }; 22 23 static struct clk cpu_clk = { 24 .parent = &master_clk, 25 .flags = CLK_ENABLE_ON_INIT, 26 }; 27 28 /* 29 * The ordering of these clocks matters, do not change it. 30 */ 31 static struct clk *onchip_clocks[] = { 32 &master_clk, 33 &peripheral_clk, 34 &bus_clk, 35 &cpu_clk, 36 }; 37 38 static struct clk_lookup lookups[] = { 39 /* main clocks */ 40 CLKDEV_CON_ID("master_clk", &master_clk), 41 CLKDEV_CON_ID("peripheral_clk", &peripheral_clk), 42 CLKDEV_CON_ID("bus_clk", &bus_clk), 43 CLKDEV_CON_ID("cpu_clk", &cpu_clk), 44 }; 45 46 int __init __deprecated cpg_clk_init(void) 47 { 48 int i, ret = 0; 49 50 for (i = 0; i < ARRAY_SIZE(onchip_clocks); i++) { 51 struct clk *clk = onchip_clocks[i]; 52 arch_init_clk_ops(&clk->ops, i); 53 if (clk->ops) 54 ret |= clk_register(clk); 55 } 56 57 clkdev_add_table(lookups, ARRAY_SIZE(lookups)); 58 59 clk_add_alias("tmu_fck", NULL, "peripheral_clk", NULL); 60 clk_add_alias("mtu2_fck", NULL, "peripheral_clk", NULL); 61 clk_add_alias("cmt_fck", NULL, "peripheral_clk", NULL); 62 clk_add_alias("sci_ick", NULL, "peripheral_clk", NULL); 63 64 return ret; 65 } 66 67 /* 68 * Placeholder for compatibility, until the lazy CPUs do this 69 * on their own. 70 */ 71 int __init __weak arch_clk_init(void) 72 { 73 return cpg_clk_init(); 74 } 75