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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018-2021 SiFive, Inc.
* Wesley Terpstra
* Paul Walmsley
* Zong Li
* Pragnesh Patel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <dt-bindings/clock/sifive-fu740-prci.h>
#include "sifive-prci.h"
#include <asm/io.h>
int sifive_prci_fu740_pcieauxclk_enable(struct __prci_clock *pc, bool enable)
{
struct __prci_wrpll_data *pwd = pc->pwd;
struct __prci_data *pd = pc->pd;
u32 v;
if (pwd->cfg1_offs != PRCI_PCIEAUXCFG1_OFFSET)
return -EINVAL;
v = readl(pd->va + pwd->cfg1_offs);
v = enable ? (v | PRCI_PCIEAUXCFG1_MASK) : (v & ~PRCI_PCIEAUXCFG1_MASK);
writel(v, pd->va + pwd->cfg1_offs);
return 0;
}
/* PRCI integration data for each WRPLL instance */
static struct __prci_wrpll_data __prci_corepll_data = {
.cfg0_offs = PRCI_COREPLLCFG0_OFFSET,
.cfg1_offs = PRCI_COREPLLCFG1_OFFSET,
.enable_bypass = sifive_prci_coreclksel_use_hfclk,
.disable_bypass = sifive_prci_coreclksel_use_final_corepll,
};
static struct __prci_wrpll_data __prci_ddrpll_data = {
.cfg0_offs = PRCI_DDRPLLCFG0_OFFSET,
.cfg1_offs = PRCI_DDRPLLCFG1_OFFSET,
.release_reset = sifive_prci_ddr_release_reset,
};
static struct __prci_wrpll_data __prci_gemgxlpll_data = {
.cfg0_offs = PRCI_GEMGXLPLLCFG0_OFFSET,
.cfg1_offs = PRCI_GEMGXLPLLCFG1_OFFSET,
.release_reset = sifive_prci_ethernet_release_reset,
};
static struct __prci_wrpll_data __prci_dvfscorepll_data = {
.cfg0_offs = PRCI_DVFSCOREPLLCFG0_OFFSET,
.cfg1_offs = PRCI_DVFSCOREPLLCFG1_OFFSET,
.enable_bypass = sifive_prci_corepllsel_use_corepll,
.disable_bypass = sifive_prci_corepllsel_use_dvfscorepll,
};
static struct __prci_wrpll_data __prci_hfpclkpll_data = {
.cfg0_offs = PRCI_HFPCLKPLLCFG0_OFFSET,
.cfg1_offs = PRCI_HFPCLKPLLCFG1_OFFSET,
.enable_bypass = sifive_prci_hfpclkpllsel_use_hfclk,
.disable_bypass = sifive_prci_hfpclkpllsel_use_hfpclkpll,
};
static struct __prci_wrpll_data __prci_cltxpll_data = {
.cfg0_offs = PRCI_CLTXPLLCFG0_OFFSET,
.cfg1_offs = PRCI_CLTXPLLCFG1_OFFSET,
.release_reset = sifive_prci_cltx_release_reset,
};
static struct __prci_wrpll_data __prci_pcieaux_data = {
.cfg1_offs = PRCI_PCIEAUXCFG1_OFFSET,
};
/* Linux clock framework integration */
static const struct __prci_clock_ops sifive_fu740_prci_wrpll_clk_ops = {
.set_rate = sifive_prci_wrpll_set_rate,
.round_rate = sifive_prci_wrpll_round_rate,
.recalc_rate = sifive_prci_wrpll_recalc_rate,
.enable_clk = sifive_prci_clock_enable,
};
static const struct __prci_clock_ops sifive_fu740_prci_tlclksel_clk_ops = {
.recalc_rate = sifive_prci_tlclksel_recalc_rate,
};
static const struct __prci_clock_ops sifive_fu740_prci_hfpclkplldiv_clk_ops = {
.recalc_rate = sifive_prci_hfpclkplldiv_recalc_rate,
};
static const struct __prci_clock_ops sifive_fu740_prci_pcieaux_clk_ops = {
.enable_clk = sifive_prci_fu740_pcieauxclk_enable,
};
/* List of clock controls provided by the PRCI */
struct __prci_clock __prci_init_clocks_fu740[] = {
[FU740_PRCI_CLK_COREPLL] = {
.name = "corepll",
.parent_name = "hfclk",
.ops = &sifive_fu740_prci_wrpll_clk_ops,
.pwd = &__prci_corepll_data,
},
[FU740_PRCI_CLK_DDRPLL] = {
.name = "ddrpll",
.parent_name = "hfclk",
.ops = &sifive_fu740_prci_wrpll_clk_ops,
.pwd = &__prci_ddrpll_data,
},
[FU740_PRCI_CLK_GEMGXLPLL] = {
.name = "gemgxlpll",
.parent_name = "hfclk",
.ops = &sifive_fu740_prci_wrpll_clk_ops,
.pwd = &__prci_gemgxlpll_data,
},
[FU740_PRCI_CLK_DVFSCOREPLL] = {
.name = "dvfscorepll",
.parent_name = "hfclk",
.ops = &sifive_fu740_prci_wrpll_clk_ops,
.pwd = &__prci_dvfscorepll_data,
},
[FU740_PRCI_CLK_HFPCLKPLL] = {
.name = "hfpclkpll",
.parent_name = "hfclk",
.ops = &sifive_fu740_prci_wrpll_clk_ops,
.pwd = &__prci_hfpclkpll_data,
},
[FU740_PRCI_CLK_CLTXPLL] = {
.name = "cltxpll",
.parent_name = "hfclk",
.ops = &sifive_fu740_prci_wrpll_clk_ops,
.pwd = &__prci_cltxpll_data,
},
[FU740_PRCI_CLK_TLCLK] = {
.name = "tlclk",
.parent_name = "corepll",
.ops = &sifive_fu740_prci_tlclksel_clk_ops,
},
[FU740_PRCI_CLK_PCLK] = {
.name = "pclk",
.parent_name = "hfpclkpll",
.ops = &sifive_fu740_prci_hfpclkplldiv_clk_ops,
},
[FU740_PRCI_CLK_PCIE_AUX] {
.name = "pcieaux",
.parent_name = "",
.ops = &sifive_fu740_prci_pcieaux_clk_ops,
.pwd = &__prci_pcieaux_data,
}
};
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