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58 lines
1.3 KiB
58 lines
1.3 KiB
/*
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* Copyright (c) 2015-2019, Renesas Electronics Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdint.h>
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#include <string.h>
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#include <common/debug.h>
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#include <lib/mmio.h>
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#include "cpg_registers.h"
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#include "rcar_def.h"
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#include "rcar_private.h"
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#include "rpc_registers.h"
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#define MSTPSR9_RPC_BIT (0x00020000U)
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#define RPC_CMNCR_MD_BIT (0x80000000U)
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#define RPC_PHYCNT_CAL BIT(31)
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#define RPC_PHYCNT_STRTIM_M3V1 (0x6 << 15UL)
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#define RPC_PHYCNT_STRTIM (0x7 << 15UL)
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static void rpc_enable(void)
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{
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/* Enable clock supply to RPC. */
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mstpcr_write(CPG_SMSTPCR9, CPG_MSTPSR9, MSTPSR9_RPC_BIT);
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}
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static void rpc_setup(void)
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{
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uint32_t product, cut, reg, phy_strtim;
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if (mmio_read_32(RPC_CMNCR) & RPC_CMNCR_MD_BIT)
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mmio_clrbits_32(RPC_CMNCR, RPC_CMNCR_MD_BIT);
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product = mmio_read_32(RCAR_PRR) & PRR_PRODUCT_MASK;
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cut = mmio_read_32(RCAR_PRR) & PRR_CUT_MASK;
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if ((product == PRR_PRODUCT_M3) && (cut < PRR_PRODUCT_30))
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phy_strtim = RPC_PHYCNT_STRTIM_M3V1;
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else
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phy_strtim = RPC_PHYCNT_STRTIM;
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reg = mmio_read_32(RPC_PHYCNT);
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reg &= ~RPC_PHYCNT_STRTIM;
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reg |= phy_strtim;
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mmio_write_32(RPC_PHYCNT, reg);
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reg |= RPC_PHYCNT_CAL;
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mmio_write_32(RPC_PHYCNT, reg);
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}
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void rcar_rpc_init(void)
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{
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rpc_enable();
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rpc_setup();
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}
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