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/*
* (C) Copyright 2009 ST-Ericsson
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
struct clkrst {
unsigned int pcken;
unsigned int pckdis;
unsigned int kcken;
unsigned int kckdis;
};
static unsigned int clkrst_base[] = {
U8500_CLKRST1_BASE,
U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE,
0,
U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE,
U8500_CLKRST7_BASE, /* ED only */
};
/* Turn on peripheral clock at PRCC level */
void u8500_clock_enable(int periph, int cluster, int kern)
{
struct clkrst *clkrst = (struct clkrst *) clkrst_base[periph - 1];
if (kern != -1)
writel(1 << kern, &clkrst->kcken);
if (cluster != -1)
writel(1 << cluster, &clkrst->pcken);
}
void db8500_clocks_init(void)
{
/*
* Enable all clocks. This is u-boot, we can enable it all. There is no
* powersave in u-boot.
*/
u8500_clock_enable(1, 9, -1); /* GPIO0 */
u8500_clock_enable(2, 11, -1);/* GPIO1 */
u8500_clock_enable(3, 8, -1); /* GPIO2 */
u8500_clock_enable(5, 1, -1); /* GPIO3 */
u8500_clock_enable(3, 6, 6); /* UART2 */
u8500_clock_enable(3, 3, 3); /* I2C0 */
u8500_clock_enable(1, 5, 5); /* SDI0 */
u8500_clock_enable(2, 4, 2); /* SDI4 */
u8500_clock_enable(6, 6, -1); /* MTU0 */
u8500_clock_enable(3, 4, 4); /* SDI2 */
/*
* Enabling clocks for all devices which are AMBA devices in the
* kernel. Otherwise they will not get probe()'d because the
* peripheral ID register will not be powered.
*/
/* XXX: some of these differ between ED/V1 */
u8500_clock_enable(1, 1, 1); /* UART1 */
u8500_clock_enable(1, 0, 0); /* UART0 */
u8500_clock_enable(3, 2, 2); /* SSP1 */
u8500_clock_enable(3, 1, 1); /* SSP0 */
u8500_clock_enable(2, 8, -1); /* SPI0 */
u8500_clock_enable(2, 5, 3); /* MSP2 */
}
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