| /* |
| * Copyright 2013 Broadcom Corporation. |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <asm/io.h> |
| #include <asm/errno.h> |
| #include <asm/arch/sysmap.h> |
| #include <asm/kona-common/clk.h> |
| #include "clk-core.h" |
| |
| /* Enable appropriate clocks for an SDIO port */ |
| int clk_sdio_enable(void *base, u32 rate, u32 *actual_ratep) |
| { |
| int ret; |
| struct clk *c; |
| |
| char *clkstr; |
| char *slpstr; |
| char *ahbstr; |
| |
| switch ((u32) base) { |
| case CONFIG_SYS_SDIO_BASE0: |
| clkstr = CONFIG_SYS_SDIO0 "_clk"; |
| ahbstr = CONFIG_SYS_SDIO0 "_ahb_clk"; |
| slpstr = CONFIG_SYS_SDIO0 "_sleep_clk"; |
| break; |
| case CONFIG_SYS_SDIO_BASE1: |
| clkstr = CONFIG_SYS_SDIO1 "_clk"; |
| ahbstr = CONFIG_SYS_SDIO1 "_ahb_clk"; |
| slpstr = CONFIG_SYS_SDIO1 "_sleep_clk"; |
| break; |
| case CONFIG_SYS_SDIO_BASE2: |
| clkstr = CONFIG_SYS_SDIO2 "_clk"; |
| ahbstr = CONFIG_SYS_SDIO2 "_ahb_clk"; |
| slpstr = CONFIG_SYS_SDIO2 "_sleep_clk"; |
| break; |
| case CONFIG_SYS_SDIO_BASE3: |
| clkstr = CONFIG_SYS_SDIO3 "_clk"; |
| ahbstr = CONFIG_SYS_SDIO3 "_ahb_clk"; |
| slpstr = CONFIG_SYS_SDIO3 "_sleep_clk"; |
| break; |
| default: |
| printf("%s: base 0x%p not found\n", __func__, base); |
| return -EINVAL; |
| } |
| |
| ret = clk_get_and_enable(ahbstr); |
| if (ret) |
| return ret; |
| |
| ret = clk_get_and_enable(slpstr); |
| if (ret) |
| return ret; |
| |
| c = clk_get(clkstr); |
| if (c) { |
| ret = clk_set_rate(c, rate); |
| if (ret) |
| return ret; |
| |
| ret = clk_enable(c); |
| if (ret) |
| return ret; |
| } else { |
| printf("%s: Couldn't find %s\n", __func__, clkstr); |
| return -EINVAL; |
| } |
| *actual_ratep = rate; |
| return 0; |
| } |