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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 */
clk_bsc_enable(void * base)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