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/*
* 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;
}
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