projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 989ce049 DR |
2 | /* |
| 3 | * Copyright 2013 Broadcom Corporation. | |
| 989ce049 DR |
4 | */ |
| 5 | ||
| d678a59d | 6 | #include <common.h> |
| 989ce049 | 7 | #include <asm/io.h> |
| 1221ce45 | 8 | #include <linux/errno.h> |
| 989ce049 DR |
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 | } |