Commit 61ca7b0c authored by Ray Jui's avatar Ray Jui Committed by Michael Turquette

clk: cygnus: add clock support for Broadcom Cygnus

The Broadcom Cygnus SoC is architected under the iProc architecture. It
has the following PLLs: ARMPLL, GENPLL, LCPLL0, MIPIPLL, all dervied
from an onboard crystal. Cygnus also has various ASIU clocks that are
derived directly from the onboard crystal.
Signed-off-by: default avatarRay Jui <rjui@broadcom.com>
Reviewed-by: default avatarScott Branden <sbranden@broadcom.com>
Signed-off-by: default avatarMichael Turquette <mturquette@baylibre.com>
parent 69a0b2c5
......@@ -3,3 +3,4 @@ obj-$(CONFIG_CLK_BCM_KONA) += clk-kona-setup.o
obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm281xx.o
obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm21664.o
obj-$(CONFIG_COMMON_CLK_IPROC) += clk-iproc-armpll.o clk-iproc-pll.o clk-iproc-asiu.o
obj-$(CONFIG_ARCH_BCM_CYGNUS) += clk-cygnus.o
/*
* Copyright (C) 2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/clkdev.h>
#include <linux/of_address.h>
#include <linux/delay.h>
#include <dt-bindings/clock/bcm-cygnus.h>
#include "clk-iproc.h"
#define reg_val(o, s, w) { .offset = o, .shift = s, .width = w, }
#define aon_val(o, pw, ps, is) { .offset = o, .pwr_width = pw, \
.pwr_shift = ps, .iso_shift = is }
#define sw_ctrl_val(o, s) { .offset = o, .shift = s, }
#define asiu_div_val(o, es, hs, hw, ls, lw) \
{ .offset = o, .en_shift = es, .high_shift = hs, \
.high_width = hw, .low_shift = ls, .low_width = lw }
#define reset_val(o, rs, prs, kis, kiw, kps, kpw, kas, kaw) { .offset = o, \
.reset_shift = rs, .p_reset_shift = prs, .ki_shift = kis, \
.ki_width = kiw, .kp_shift = kps, .kp_width = kpw, .ka_shift = kas, \
.ka_width = kaw }
#define vco_ctrl_val(uo, lo) { .u_offset = uo, .l_offset = lo }
#define enable_val(o, es, hs, bs) { .offset = o, .enable_shift = es, \
.hold_shift = hs, .bypass_shift = bs }
#define asiu_gate_val(o, es) { .offset = o, .en_shift = es }
static void __init cygnus_armpll_init(struct device_node *node)
{
iproc_armpll_setup(node);
}
CLK_OF_DECLARE(cygnus_armpll, "brcm,cygnus-armpll", cygnus_armpll_init);
static const struct iproc_pll_ctrl genpll = {
.flags = IPROC_CLK_AON | IPROC_CLK_PLL_HAS_NDIV_FRAC |
IPROC_CLK_PLL_NEEDS_SW_CFG,
.aon = aon_val(0x0, 2, 1, 0),
.reset = reset_val(0x0, 11, 10, 4, 3, 0, 4, 7, 3),
.sw_ctrl = sw_ctrl_val(0x10, 31),
.ndiv_int = reg_val(0x10, 20, 10),
.ndiv_frac = reg_val(0x10, 0, 20),
.pdiv = reg_val(0x14, 0, 4),
.vco_ctrl = vco_ctrl_val(0x18, 0x1c),
.status = reg_val(0x28, 12, 1),
};
static const struct iproc_clk_ctrl genpll_clk[] = {
[BCM_CYGNUS_GENPLL_AXI21_CLK] = {
.channel = BCM_CYGNUS_GENPLL_AXI21_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x4, 6, 0, 12),
.mdiv = reg_val(0x20, 0, 8),
},
[BCM_CYGNUS_GENPLL_250MHZ_CLK] = {
.channel = BCM_CYGNUS_GENPLL_250MHZ_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x4, 7, 1, 13),
.mdiv = reg_val(0x20, 10, 8),
},
[BCM_CYGNUS_GENPLL_IHOST_SYS_CLK] = {
.channel = BCM_CYGNUS_GENPLL_IHOST_SYS_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x4, 8, 2, 14),
.mdiv = reg_val(0x20, 20, 8),
},
[BCM_CYGNUS_GENPLL_ENET_SW_CLK] = {
.channel = BCM_CYGNUS_GENPLL_ENET_SW_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x4, 9, 3, 15),
.mdiv = reg_val(0x24, 0, 8),
},
[BCM_CYGNUS_GENPLL_AUDIO_125_CLK] = {
.channel = BCM_CYGNUS_GENPLL_AUDIO_125_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x4, 10, 4, 16),
.mdiv = reg_val(0x24, 10, 8),
},
[BCM_CYGNUS_GENPLL_CAN_CLK] = {
.channel = BCM_CYGNUS_GENPLL_CAN_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x4, 11, 5, 17),
.mdiv = reg_val(0x24, 20, 8),
},
};
static void __init cygnus_genpll_clk_init(struct device_node *node)
{
iproc_pll_clk_setup(node, &genpll, NULL, 0, genpll_clk,
ARRAY_SIZE(genpll_clk));
}
CLK_OF_DECLARE(cygnus_genpll, "brcm,cygnus-genpll", cygnus_genpll_clk_init);
static const struct iproc_pll_ctrl lcpll0 = {
.flags = IPROC_CLK_AON | IPROC_CLK_PLL_NEEDS_SW_CFG,
.aon = aon_val(0x0, 2, 5, 4),
.reset = reset_val(0x0, 31, 30, 27, 3, 23, 4, 19, 4),
.sw_ctrl = sw_ctrl_val(0x4, 31),
.ndiv_int = reg_val(0x4, 16, 10),
.pdiv = reg_val(0x4, 26, 4),
.vco_ctrl = vco_ctrl_val(0x10, 0x14),
.status = reg_val(0x18, 12, 1),
};
static const struct iproc_clk_ctrl lcpll0_clk[] = {
[BCM_CYGNUS_LCPLL0_PCIE_PHY_REF_CLK] = {
.channel = BCM_CYGNUS_LCPLL0_PCIE_PHY_REF_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x0, 7, 1, 13),
.mdiv = reg_val(0x8, 0, 8),
},
[BCM_CYGNUS_LCPLL0_DDR_PHY_CLK] = {
.channel = BCM_CYGNUS_LCPLL0_DDR_PHY_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x0, 8, 2, 14),
.mdiv = reg_val(0x8, 10, 8),
},
[BCM_CYGNUS_LCPLL0_SDIO_CLK] = {
.channel = BCM_CYGNUS_LCPLL0_SDIO_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x0, 9, 3, 15),
.mdiv = reg_val(0x8, 20, 8),
},
[BCM_CYGNUS_LCPLL0_USB_PHY_REF_CLK] = {
.channel = BCM_CYGNUS_LCPLL0_USB_PHY_REF_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x0, 10, 4, 16),
.mdiv = reg_val(0xc, 0, 8),
},
[BCM_CYGNUS_LCPLL0_SMART_CARD_CLK] = {
.channel = BCM_CYGNUS_LCPLL0_SMART_CARD_CLK,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x0, 11, 5, 17),
.mdiv = reg_val(0xc, 10, 8),
},
[BCM_CYGNUS_LCPLL0_CH5_UNUSED] = {
.channel = BCM_CYGNUS_LCPLL0_CH5_UNUSED,
.flags = IPROC_CLK_AON,
.enable = enable_val(0x0, 12, 6, 18),
.mdiv = reg_val(0xc, 20, 8),
},
};
static void __init cygnus_lcpll0_clk_init(struct device_node *node)
{
iproc_pll_clk_setup(node, &lcpll0, NULL, 0, lcpll0_clk,
ARRAY_SIZE(lcpll0_clk));
}
CLK_OF_DECLARE(cygnus_lcpll0, "brcm,cygnus-lcpll0", cygnus_lcpll0_clk_init);
/*
* MIPI PLL VCO frequency parameter table
*/
static const struct iproc_pll_vco_param mipipll_vco_params[] = {
/* rate (Hz) ndiv_int ndiv_frac pdiv */
{ 750000000UL, 30, 0, 1 },
{ 1000000000UL, 40, 0, 1 },
{ 1350000000ul, 54, 0, 1 },
{ 2000000000UL, 80, 0, 1 },
{ 2100000000UL, 84, 0, 1 },
{ 2250000000UL, 90, 0, 1 },
{ 2500000000UL, 100, 0, 1 },
{ 2700000000UL, 54, 0, 0 },
{ 2975000000UL, 119, 0, 1 },
{ 3100000000UL, 124, 0, 1 },
{ 3150000000UL, 126, 0, 1 },
};
static const struct iproc_pll_ctrl mipipll = {
.flags = IPROC_CLK_PLL_ASIU | IPROC_CLK_PLL_HAS_NDIV_FRAC |
IPROC_CLK_NEEDS_READ_BACK,
.aon = aon_val(0x0, 4, 17, 16),
.asiu = asiu_gate_val(0x0, 3),
.reset = reset_val(0x0, 11, 10, 4, 3, 0, 4, 7, 4),
.ndiv_int = reg_val(0x10, 20, 10),
.ndiv_frac = reg_val(0x10, 0, 20),
.pdiv = reg_val(0x14, 0, 4),
.vco_ctrl = vco_ctrl_val(0x18, 0x1c),
.status = reg_val(0x28, 12, 1),
};
static const struct iproc_clk_ctrl mipipll_clk[] = {
[BCM_CYGNUS_MIPIPLL_CH0_UNUSED] = {
.channel = BCM_CYGNUS_MIPIPLL_CH0_UNUSED,
.flags = IPROC_CLK_NEEDS_READ_BACK,
.enable = enable_val(0x4, 12, 6, 18),
.mdiv = reg_val(0x20, 0, 8),
},
[BCM_CYGNUS_MIPIPLL_CH1_LCD] = {
.channel = BCM_CYGNUS_MIPIPLL_CH1_LCD,
.flags = IPROC_CLK_NEEDS_READ_BACK,
.enable = enable_val(0x4, 13, 7, 19),
.mdiv = reg_val(0x20, 10, 8),
},
[BCM_CYGNUS_MIPIPLL_CH2_V3D] = {
.channel = BCM_CYGNUS_MIPIPLL_CH2_V3D,
.flags = IPROC_CLK_NEEDS_READ_BACK,
.enable = enable_val(0x4, 14, 8, 20),
.mdiv = reg_val(0x20, 20, 8),
},
[BCM_CYGNUS_MIPIPLL_CH3_UNUSED] = {
.channel = BCM_CYGNUS_MIPIPLL_CH3_UNUSED,
.flags = IPROC_CLK_NEEDS_READ_BACK,
.enable = enable_val(0x4, 15, 9, 21),
.mdiv = reg_val(0x24, 0, 8),
},
[BCM_CYGNUS_MIPIPLL_CH4_UNUSED] = {
.channel = BCM_CYGNUS_MIPIPLL_CH4_UNUSED,
.flags = IPROC_CLK_NEEDS_READ_BACK,
.enable = enable_val(0x4, 16, 10, 22),
.mdiv = reg_val(0x24, 10, 8),
},
[BCM_CYGNUS_MIPIPLL_CH5_UNUSED] = {
.channel = BCM_CYGNUS_MIPIPLL_CH5_UNUSED,
.flags = IPROC_CLK_NEEDS_READ_BACK,
.enable = enable_val(0x4, 17, 11, 23),
.mdiv = reg_val(0x24, 20, 8),
},
};
static void __init cygnus_mipipll_clk_init(struct device_node *node)
{
iproc_pll_clk_setup(node, &mipipll, mipipll_vco_params,
ARRAY_SIZE(mipipll_vco_params), mipipll_clk,
ARRAY_SIZE(mipipll_clk));
}
CLK_OF_DECLARE(cygnus_mipipll, "brcm,cygnus-mipipll", cygnus_mipipll_clk_init);
static const struct iproc_asiu_div asiu_div[] = {
[BCM_CYGNUS_ASIU_KEYPAD_CLK] = asiu_div_val(0x0, 31, 16, 10, 0, 10),
[BCM_CYGNUS_ASIU_ADC_CLK] = asiu_div_val(0x4, 31, 16, 10, 0, 10),
[BCM_CYGNUS_ASIU_PWM_CLK] = asiu_div_val(0x8, 31, 16, 10, 0, 10),
};
static const struct iproc_asiu_gate asiu_gate[] = {
[BCM_CYGNUS_ASIU_KEYPAD_CLK] = asiu_gate_val(0x0, 7),
[BCM_CYGNUS_ASIU_ADC_CLK] = asiu_gate_val(0x0, 9),
[BCM_CYGNUS_ASIU_PWM_CLK] = asiu_gate_val(IPROC_CLK_INVALID_OFFSET, 0),
};
static void __init cygnus_asiu_init(struct device_node *node)
{
iproc_asiu_setup(node, asiu_div, asiu_gate, ARRAY_SIZE(asiu_div));
}
CLK_OF_DECLARE(cygnus_asiu_clk, "brcm,cygnus-asiu-clk", cygnus_asiu_init);
/*
* BSD LICENSE
*
* Copyright(c) 2014 Broadcom Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Broadcom Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _CLOCK_BCM_CYGNUS_H
#define _CLOCK_BCM_CYGNUS_H
/* GENPLL clock ID */
#define BCM_CYGNUS_GENPLL 0
#define BCM_CYGNUS_GENPLL_AXI21_CLK 1
#define BCM_CYGNUS_GENPLL_250MHZ_CLK 2
#define BCM_CYGNUS_GENPLL_IHOST_SYS_CLK 3
#define BCM_CYGNUS_GENPLL_ENET_SW_CLK 4
#define BCM_CYGNUS_GENPLL_AUDIO_125_CLK 5
#define BCM_CYGNUS_GENPLL_CAN_CLK 6
/* LCPLL0 clock ID */
#define BCM_CYGNUS_LCPLL0 0
#define BCM_CYGNUS_LCPLL0_PCIE_PHY_REF_CLK 1
#define BCM_CYGNUS_LCPLL0_DDR_PHY_CLK 2
#define BCM_CYGNUS_LCPLL0_SDIO_CLK 3
#define BCM_CYGNUS_LCPLL0_USB_PHY_REF_CLK 4
#define BCM_CYGNUS_LCPLL0_SMART_CARD_CLK 5
#define BCM_CYGNUS_LCPLL0_CH5_UNUSED 6
/* MIPI PLL clock ID */
#define BCM_CYGNUS_MIPIPLL 0
#define BCM_CYGNUS_MIPIPLL_CH0_UNUSED 1
#define BCM_CYGNUS_MIPIPLL_CH1_LCD 2
#define BCM_CYGNUS_MIPIPLL_CH2_V3D 3
#define BCM_CYGNUS_MIPIPLL_CH3_UNUSED 4
#define BCM_CYGNUS_MIPIPLL_CH4_UNUSED 5
#define BCM_CYGNUS_MIPIPLL_CH5_UNUSED 6
/* ASIU clock ID */
#define BCM_CYGNUS_ASIU_KEYPAD_CLK 0
#define BCM_CYGNUS_ASIU_ADC_CLK 1
#define BCM_CYGNUS_ASIU_PWM_CLK 2
#endif /* _CLOCK_BCM_CYGNUS_H */
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