1989ce049SDarwin Rambo /* 2989ce049SDarwin Rambo * Copyright 2013 Broadcom Corporation. 3989ce049SDarwin Rambo * 4989ce049SDarwin Rambo * SPDX-License-Identifier: GPL-2.0+ 5989ce049SDarwin Rambo */ 6989ce049SDarwin Rambo 7989ce049SDarwin Rambo #include <common.h> 8989ce049SDarwin Rambo #include <asm/io.h> 9*1221ce45SMasahiro Yamada #include <linux/errno.h> 10989ce049SDarwin Rambo #include <asm/arch/sysmap.h> 11989ce049SDarwin Rambo #include <asm/kona-common/clk.h> 12989ce049SDarwin Rambo #include "clk-core.h" 13989ce049SDarwin Rambo 14989ce049SDarwin Rambo /* Enable appropriate clocks for a BSC/I2C port */ 15989ce049SDarwin Rambo int clk_bsc_enable(void *base) 16989ce049SDarwin Rambo { 17989ce049SDarwin Rambo int ret; 18989ce049SDarwin Rambo char *bscstr, *apbstr; 19989ce049SDarwin Rambo 20989ce049SDarwin Rambo switch ((u32) base) { 21989ce049SDarwin Rambo case PMU_BSC_BASE_ADDR: 22989ce049SDarwin Rambo /* PMU clock is always enabled */ 23989ce049SDarwin Rambo return 0; 24989ce049SDarwin Rambo case BSC1_BASE_ADDR: 25989ce049SDarwin Rambo bscstr = "bsc1_clk"; 26989ce049SDarwin Rambo apbstr = "bsc1_apb_clk"; 27989ce049SDarwin Rambo break; 28989ce049SDarwin Rambo case BSC2_BASE_ADDR: 29989ce049SDarwin Rambo bscstr = "bsc2_clk"; 30989ce049SDarwin Rambo apbstr = "bsc2_apb_clk"; 31989ce049SDarwin Rambo break; 32989ce049SDarwin Rambo case BSC3_BASE_ADDR: 33989ce049SDarwin Rambo bscstr = "bsc3_clk"; 34989ce049SDarwin Rambo apbstr = "bsc3_apb_clk"; 35989ce049SDarwin Rambo break; 36989ce049SDarwin Rambo default: 37989ce049SDarwin Rambo printf("%s: base 0x%p not found\n", __func__, base); 38989ce049SDarwin Rambo return -EINVAL; 39989ce049SDarwin Rambo } 40989ce049SDarwin Rambo 41989ce049SDarwin Rambo /* Note that the bus clock must be enabled first */ 42989ce049SDarwin Rambo 43989ce049SDarwin Rambo ret = clk_get_and_enable(apbstr); 44989ce049SDarwin Rambo if (ret) 45989ce049SDarwin Rambo return ret; 46989ce049SDarwin Rambo 47989ce049SDarwin Rambo ret = clk_get_and_enable(bscstr); 48989ce049SDarwin Rambo if (ret) 49989ce049SDarwin Rambo return ret; 50989ce049SDarwin Rambo 51989ce049SDarwin Rambo return 0; 52989ce049SDarwin Rambo } 53