1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2013 Broadcom Corporation. 4 */ 5 6 #include <common.h> 7 #include <asm/io.h> 8 #include <linux/errno.h> 9 #include <asm/arch/sysmap.h> 10 #include <asm/kona-common/clk.h> 11 #include "clk-core.h" 12 13 /* Enable appropriate clocks for a BSC/I2C port */ 14 int clk_bsc_enable(void *base) 15 { 16 int ret; 17 char *bscstr, *apbstr; 18 19 switch ((u32) base) { 20 case PMU_BSC_BASE_ADDR: 21 /* PMU clock is always enabled */ 22 return 0; 23 case BSC1_BASE_ADDR: 24 bscstr = "bsc1_clk"; 25 apbstr = "bsc1_apb_clk"; 26 break; 27 case BSC2_BASE_ADDR: 28 bscstr = "bsc2_clk"; 29 apbstr = "bsc2_apb_clk"; 30 break; 31 case BSC3_BASE_ADDR: 32 bscstr = "bsc3_clk"; 33 apbstr = "bsc3_apb_clk"; 34 break; 35 default: 36 printf("%s: base 0x%p not found\n", __func__, base); 37 return -EINVAL; 38 } 39 40 /* Note that the bus clock must be enabled first */ 41 42 ret = clk_get_and_enable(apbstr); 43 if (ret) 44 return ret; 45 46 ret = clk_get_and_enable(bscstr); 47 if (ret) 48 return ret; 49 50 return 0; 51 } 52
