19cf705deSTony Lindgren /* 29cf705deSTony Lindgren * This program is free software; you can redistribute it and/or 39cf705deSTony Lindgren * modify it under the terms of the GNU General Public License as 49cf705deSTony Lindgren * published by the Free Software Foundation version 2. 59cf705deSTony Lindgren */ 69cf705deSTony Lindgren 79cf705deSTony Lindgren #include <linux/kernel.h> 8*21330497STony Lindgren #include <linux/clk.h> 99cf705deSTony Lindgren #include <linux/clk-provider.h> 109cf705deSTony Lindgren #include <linux/clk/ti.h> 11*21330497STony Lindgren #include <linux/of_platform.h> 129cf705deSTony Lindgren 13f9511a4fSStephen Rothwell #include "clock.h" 14f9511a4fSStephen Rothwell 159cf705deSTony Lindgren static struct ti_dt_clk dm814_clks[] = { 169cf705deSTony Lindgren DT_CLK(NULL, "devosc_ck", "devosc_ck"), 179cf705deSTony Lindgren DT_CLK(NULL, "mpu_ck", "mpu_ck"), 189cf705deSTony Lindgren DT_CLK(NULL, "sysclk4_ck", "sysclk4_ck"), 195fbeef58STony Lindgren DT_CLK(NULL, "sysclk5_ck", "sysclk5_ck"), 209cf705deSTony Lindgren DT_CLK(NULL, "sysclk6_ck", "sysclk6_ck"), 215fbeef58STony Lindgren DT_CLK(NULL, "sysclk8_ck", "sysclk8_ck"), 229cf705deSTony Lindgren DT_CLK(NULL, "sysclk10_ck", "sysclk10_ck"), 239cf705deSTony Lindgren DT_CLK(NULL, "sysclk18_ck", "sysclk18_ck"), 249cf705deSTony Lindgren DT_CLK(NULL, "timer_sys_ck", "devosc_ck"), 255fbeef58STony Lindgren DT_CLK(NULL, "timer1_fck", "timer1_fck"), 265fbeef58STony Lindgren DT_CLK(NULL, "timer2_fck", "timer2_fck"), 279cf705deSTony Lindgren DT_CLK(NULL, "cpsw_125mhz_gclk", "cpsw_125mhz_gclk"), 289cf705deSTony Lindgren DT_CLK(NULL, "cpsw_cpts_rft_clk", "cpsw_cpts_rft_clk"), 299cf705deSTony Lindgren { .node_name = NULL }, 309cf705deSTony Lindgren }; 319cf705deSTony Lindgren 32*21330497STony Lindgren static bool timer_clocks_initialized; 33*21330497STony Lindgren 34*21330497STony Lindgren int __init dm814x_adpll_early_init(void) 35*21330497STony Lindgren { 36*21330497STony Lindgren struct device_node *np; 37*21330497STony Lindgren 38*21330497STony Lindgren if (!timer_clocks_initialized) 39*21330497STony Lindgren return -ENODEV; 40*21330497STony Lindgren 41*21330497STony Lindgren np = of_find_node_by_name(NULL, "pllss"); 42*21330497STony Lindgren if (!np) { 43*21330497STony Lindgren pr_err("Could not find node for plls\n"); 44*21330497STony Lindgren return -ENODEV; 45*21330497STony Lindgren } 46*21330497STony Lindgren 47*21330497STony Lindgren of_platform_populate(np, NULL, NULL, NULL); 48*21330497STony Lindgren 49*21330497STony Lindgren return 0; 50*21330497STony Lindgren } 51*21330497STony Lindgren core_initcall(dm814x_adpll_early_init); 52*21330497STony Lindgren 53*21330497STony Lindgren static const char * const init_clocks[] = { 54*21330497STony Lindgren "pll040clkout", /* MPU 481c5040.adpll.clkout */ 55*21330497STony Lindgren "pll290clkout", /* DDR 481c5290.adpll.clkout */ 56*21330497STony Lindgren }; 57*21330497STony Lindgren 58*21330497STony Lindgren int __init dm814x_adpll_enable_init_clocks(void) 59*21330497STony Lindgren { 60*21330497STony Lindgren int i, err; 61*21330497STony Lindgren 62*21330497STony Lindgren if (!timer_clocks_initialized) 63*21330497STony Lindgren return -ENODEV; 64*21330497STony Lindgren 65*21330497STony Lindgren for (i = 0; i < ARRAY_SIZE(init_clocks); i++) { 66*21330497STony Lindgren struct clk *clock; 67*21330497STony Lindgren 68*21330497STony Lindgren clock = clk_get(NULL, init_clocks[i]); 69*21330497STony Lindgren if (WARN(IS_ERR(clock), "could not find init clock %s\n", 70*21330497STony Lindgren init_clocks[i])) 71*21330497STony Lindgren continue; 72*21330497STony Lindgren err = clk_prepare_enable(clock); 73*21330497STony Lindgren if (WARN(err, "could not enable init clock %s\n", 74*21330497STony Lindgren init_clocks[i])) 75*21330497STony Lindgren continue; 76*21330497STony Lindgren } 77*21330497STony Lindgren 78*21330497STony Lindgren return 0; 79*21330497STony Lindgren } 80*21330497STony Lindgren postcore_initcall(dm814x_adpll_enable_init_clocks); 81*21330497STony Lindgren 829cf705deSTony Lindgren int __init dm814x_dt_clk_init(void) 839cf705deSTony Lindgren { 849cf705deSTony Lindgren ti_dt_clocks_register(dm814_clks); 859cf705deSTony Lindgren omap2_clk_disable_autoidle_all(); 869cf705deSTony Lindgren omap2_clk_enable_init_clocks(NULL, 0); 87*21330497STony Lindgren timer_clocks_initialized = true; 889cf705deSTony Lindgren 899cf705deSTony Lindgren return 0; 909cf705deSTony Lindgren } 91