blob: 5c11b62de6e30832505a45098d486bb9f5a079cb [file] [log] [blame]
/*
* Copyright (c) 2015-2019, Renesas Electronics Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include <string.h>
#include <common/debug.h>
#include <lib/mmio.h>
#include "cpg_registers.h"
#include "rcar_def.h"
#include "rcar_private.h"
#include "rpc_registers.h"
#define MSTPSR9_RPC_BIT (0x00020000U)
#define RPC_CMNCR_MD_BIT (0x80000000U)
#define RPC_PHYCNT_CAL BIT(31)
#define RPC_PHYCNT_STRTIM_M3V1 (0x6 << 15UL)
#define RPC_PHYCNT_STRTIM (0x7 << 15UL)
static void rpc_enable(void)
{
/* Enable clock supply to RPC. */
mstpcr_write(CPG_SMSTPCR9, CPG_MSTPSR9, MSTPSR9_RPC_BIT);
}
static void rpc_setup(void)
{
uint32_t product, cut, reg, phy_strtim;
if (mmio_read_32(RPC_CMNCR) & RPC_CMNCR_MD_BIT)
mmio_clrbits_32(RPC_CMNCR, RPC_CMNCR_MD_BIT);
product = mmio_read_32(RCAR_PRR) & RCAR_PRODUCT_MASK;
cut = mmio_read_32(RCAR_PRR) & RCAR_CUT_MASK;
if ((product == RCAR_PRODUCT_M3) && (cut < RCAR_CUT_VER30))
phy_strtim = RPC_PHYCNT_STRTIM_M3V1;
else
phy_strtim = RPC_PHYCNT_STRTIM;
reg = mmio_read_32(RPC_PHYCNT);
reg &= ~RPC_PHYCNT_STRTIM;
reg |= phy_strtim;
mmio_write_32(RPC_PHYCNT, reg);
reg |= RPC_PHYCNT_CAL;
mmio_write_32(RPC_PHYCNT, reg);
}
void rcar_rpc_init(void)
{
rpc_enable();
rpc_setup();
}