1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Pistachio clocksource/timer setup 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2014 Google, Inc. 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #include <linux/clk.h> 9*4882a593Smuzhiyun #include <linux/clocksource.h> 10*4882a593Smuzhiyun #include <linux/init.h> 11*4882a593Smuzhiyun #include <linux/of.h> 12*4882a593Smuzhiyun #include <linux/of_clk.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #include <asm/mips-cps.h> 15*4882a593Smuzhiyun #include <asm/time.h> 16*4882a593Smuzhiyun get_c0_compare_int(void)17*4882a593Smuzhiyununsigned int get_c0_compare_int(void) 18*4882a593Smuzhiyun { 19*4882a593Smuzhiyun return gic_get_c0_compare_int(); 20*4882a593Smuzhiyun } 21*4882a593Smuzhiyun get_c0_perfcount_int(void)22*4882a593Smuzhiyunint get_c0_perfcount_int(void) 23*4882a593Smuzhiyun { 24*4882a593Smuzhiyun return gic_get_c0_perfcount_int(); 25*4882a593Smuzhiyun } 26*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(get_c0_perfcount_int); 27*4882a593Smuzhiyun get_c0_fdc_int(void)28*4882a593Smuzhiyunint get_c0_fdc_int(void) 29*4882a593Smuzhiyun { 30*4882a593Smuzhiyun return gic_get_c0_fdc_int(); 31*4882a593Smuzhiyun } 32*4882a593Smuzhiyun plat_time_init(void)33*4882a593Smuzhiyunvoid __init plat_time_init(void) 34*4882a593Smuzhiyun { 35*4882a593Smuzhiyun struct device_node *np; 36*4882a593Smuzhiyun struct clk *clk; 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun of_clk_init(NULL); 39*4882a593Smuzhiyun timer_probe(); 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun np = of_get_cpu_node(0, NULL); 42*4882a593Smuzhiyun if (!np) { 43*4882a593Smuzhiyun pr_err("Failed to get CPU node\n"); 44*4882a593Smuzhiyun return; 45*4882a593Smuzhiyun } 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun clk = of_clk_get(np, 0); 48*4882a593Smuzhiyun if (IS_ERR(clk)) { 49*4882a593Smuzhiyun pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk)); 50*4882a593Smuzhiyun return; 51*4882a593Smuzhiyun } 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun mips_hpt_frequency = clk_get_rate(clk) / 2; 54*4882a593Smuzhiyun clk_put(clk); 55*4882a593Smuzhiyun } 56