421 lines
17 KiB
C
421 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Rosy Song <rosysong@rosinson.com>
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*/
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#include <common.h>
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#include <clock_legacy.h>
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#include <asm/io.h>
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#include <asm/addrspace.h>
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#include <asm/types.h>
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#include <mach/ar71xx_regs.h>
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#include <mach/ath79.h>
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#include <wait_bit.h>
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#define PLL_SRIF_DPLL2_KI_LSB 29
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#define PLL_SRIF_DPLL2_KI_MASK 0x60000000
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#define PLL_SRIF_DPLL2_KI_SET(x) \
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(((x) << PLL_SRIF_DPLL2_KI_LSB) & PLL_SRIF_DPLL2_KI_MASK)
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#define PLL_SRIF_DPLL2_KD_LSB 25
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#define PLL_SRIF_DPLL2_KD_MASK 0x1e000000
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#define PLL_SRIF_DPLL2_KD_SET(x) \
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(((x) << PLL_SRIF_DPLL2_KD_LSB) & PLL_SRIF_DPLL2_KD_MASK)
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#define PLL_SRIF_DPLL2_PLL_PWD_LSB 22
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#define PLL_SRIF_DPLL2_PLL_PWD_MASK 0x00400000
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#define PLL_SRIF_DPLL2_PLL_PWD_SET(x) \
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(((x) << PLL_SRIF_DPLL2_PLL_PWD_LSB) & PLL_SRIF_DPLL2_PLL_PWD_MASK)
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#define PLL_SRIF_DPLL2_OUTDIV_LSB 19
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#define PLL_SRIF_DPLL2_OUTDIV_MASK 0x00380000
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#define PLL_SRIF_DPLL2_OUTDIV_SET(x) \
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(((x) << PLL_SRIF_DPLL2_OUTDIV_LSB) & PLL_SRIF_DPLL2_OUTDIV_MASK)
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#define PLL_SRIF_DPLL2_PHASE_SHIFT_LSB 12
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#define PLL_SRIF_DPLL2_PHASE_SHIFT_MASK 0x0007f000
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#define PLL_SRIF_DPLL2_PHASE_SHIFT_SET(x) \
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(((x) << PLL_SRIF_DPLL2_PHASE_SHIFT_LSB) & PLL_SRIF_DPLL2_PHASE_SHIFT_MASK)
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#define CPU_PLL_CONFIG_PLLPWD_LSB 30
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#define CPU_PLL_CONFIG_PLLPWD_MASK 0x40000000
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#define CPU_PLL_CONFIG_PLLPWD_SET(x) \
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(((x) << CPU_PLL_CONFIG_PLLPWD_LSB) & CPU_PLL_CONFIG_PLLPWD_MASK)
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#define CPU_PLL_CONFIG_OUTDIV_LSB 19
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#define CPU_PLL_CONFIG_OUTDIV_MASK 0x00380000
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#define CPU_PLL_CONFIG_OUTDIV_SET(x) \
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(((x) << CPU_PLL_CONFIG_OUTDIV_LSB) & CPU_PLL_CONFIG_OUTDIV_MASK)
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#define CPU_PLL_CONFIG_RANGE_LSB 17
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#define CPU_PLL_CONFIG_RANGE_MASK 0x00060000
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#define CPU_PLL_CONFIG_RANGE_SET(x) \
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(((x) << CPU_PLL_CONFIG_RANGE_LSB) & CPU_PLL_CONFIG_RANGE_MASK)
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#define CPU_PLL_CONFIG_REFDIV_LSB 12
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#define CPU_PLL_CONFIG_REFDIV_MASK 0x0001f000
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#define CPU_PLL_CONFIG_REFDIV_SET(x) \
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(((x) << CPU_PLL_CONFIG_REFDIV_LSB) & CPU_PLL_CONFIG_REFDIV_MASK)
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#define CPU_PLL_CONFIG1_NINT_LSB 18
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#define CPU_PLL_CONFIG1_NINT_MASK 0x07fc0000
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#define CPU_PLL_CONFIG1_NINT_SET(x) \
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(((x) << CPU_PLL_CONFIG1_NINT_LSB) & CPU_PLL_CONFIG1_NINT_MASK)
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#define CPU_PLL_DITHER1_DITHER_EN_LSB 31
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#define CPU_PLL_DITHER1_DITHER_EN_MASK 0x80000000
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#define CPU_PLL_DITHER1_DITHER_EN_SET(x) \
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(((x) << CPU_PLL_DITHER1_DITHER_EN_LSB) & CPU_PLL_DITHER1_DITHER_EN_MASK)
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#define CPU_PLL_DITHER1_UPDATE_COUNT_LSB 24
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#define CPU_PLL_DITHER1_UPDATE_COUNT_MASK 0x3f000000
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#define CPU_PLL_DITHER1_UPDATE_COUNT_SET(x) \
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(((x) << CPU_PLL_DITHER1_UPDATE_COUNT_LSB) & CPU_PLL_DITHER1_UPDATE_COUNT_MASK)
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#define CPU_PLL_DITHER1_NFRAC_STEP_LSB 18
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#define CPU_PLL_DITHER1_NFRAC_STEP_MASK 0x00fc0000
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#define CPU_PLL_DITHER1_NFRAC_STEP_SET(x) \
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(((x) << CPU_PLL_DITHER1_NFRAC_STEP_LSB) & CPU_PLL_DITHER1_NFRAC_STEP_MASK)
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#define CPU_PLL_DITHER1_NFRAC_MIN_LSB 0
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#define CPU_PLL_DITHER1_NFRAC_MIN_MASK 0x0003ffff
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#define CPU_PLL_DITHER1_NFRAC_MIN_SET(x) \
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(((x) << CPU_PLL_DITHER1_NFRAC_MIN_LSB) & CPU_PLL_DITHER1_NFRAC_MIN_MASK)
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#define CPU_PLL_DITHER2_NFRAC_MAX_LSB 0
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#define CPU_PLL_DITHER2_NFRAC_MAX_MASK 0x0003ffff
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#define CPU_PLL_DITHER2_NFRAC_MAX_SET(x) \
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(((x) << CPU_PLL_DITHER2_NFRAC_MAX_LSB) & CPU_PLL_DITHER2_NFRAC_MAX_MASK)
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#define DDR_PLL_CONFIG_PLLPWD_LSB 30
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#define DDR_PLL_CONFIG_PLLPWD_MASK 0x40000000
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#define DDR_PLL_CONFIG_PLLPWD_SET(x) \
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(((x) << DDR_PLL_CONFIG_PLLPWD_LSB) & DDR_PLL_CONFIG_PLLPWD_MASK)
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#define DDR_PLL_CONFIG_OUTDIV_LSB 23
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#define DDR_PLL_CONFIG_OUTDIV_MASK 0x03800000
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#define DDR_PLL_CONFIG_OUTDIV_SET(x) \
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(((x) << DDR_PLL_CONFIG_OUTDIV_LSB) & DDR_PLL_CONFIG_OUTDIV_MASK)
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#define DDR_PLL_CONFIG_RANGE_LSB 21
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#define DDR_PLL_CONFIG_RANGE_MASK 0x00600000
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#define DDR_PLL_CONFIG_RANGE_SET(x) \
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(((x) << DDR_PLL_CONFIG_RANGE_LSB) & DDR_PLL_CONFIG_RANGE_MASK)
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#define DDR_PLL_CONFIG_REFDIV_LSB 16
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#define DDR_PLL_CONFIG_REFDIV_MASK 0x001f0000
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#define DDR_PLL_CONFIG_REFDIV_SET(x) \
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(((x) << DDR_PLL_CONFIG_REFDIV_LSB) & DDR_PLL_CONFIG_REFDIV_MASK)
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#define DDR_PLL_CONFIG1_NINT_LSB 18
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#define DDR_PLL_CONFIG1_NINT_MASK 0x07fc0000
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#define DDR_PLL_CONFIG1_NINT_SET(x) \
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(((x) << DDR_PLL_CONFIG1_NINT_LSB) & DDR_PLL_CONFIG1_NINT_MASK)
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#define DDR_PLL_DITHER1_DITHER_EN_LSB 31
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#define DDR_PLL_DITHER1_DITHER_EN_MASK 0x80000000
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#define DDR_PLL_DITHER1_DITHER_EN_SET(x) \
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(((x) << DDR_PLL_DITHER1_DITHER_EN_LSB) & DDR_PLL_DITHER1_DITHER_EN_MASK)
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#define DDR_PLL_DITHER1_UPDATE_COUNT_LSB 27
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#define DDR_PLL_DITHER1_UPDATE_COUNT_MASK 0x78000000
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#define DDR_PLL_DITHER1_UPDATE_COUNT_SET(x) \
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(((x) << DDR_PLL_DITHER1_UPDATE_COUNT_LSB) & DDR_PLL_DITHER1_UPDATE_COUNT_MASK)
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#define DDR_PLL_DITHER1_NFRAC_STEP_LSB 20
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#define DDR_PLL_DITHER1_NFRAC_STEP_MASK 0x07f00000
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#define DDR_PLL_DITHER1_NFRAC_STEP_SET(x) \
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(((x) << DDR_PLL_DITHER1_NFRAC_STEP_LSB) & DDR_PLL_DITHER1_NFRAC_STEP_MASK)
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#define DDR_PLL_DITHER1_NFRAC_MIN_LSB 0
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#define DDR_PLL_DITHER1_NFRAC_MIN_MASK 0x0003ffff
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#define DDR_PLL_DITHER1_NFRAC_MIN_SET(x) \
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(((x) << DDR_PLL_DITHER1_NFRAC_MIN_LSB) & DDR_PLL_DITHER1_NFRAC_MIN_MASK)
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#define DDR_PLL_DITHER2_NFRAC_MAX_LSB 0
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#define DDR_PLL_DITHER2_NFRAC_MAX_MASK 0x0003ffff
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#define DDR_PLL_DITHER2_NFRAC_MAX_SET(x) \
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(((x) << DDR_PLL_DITHER2_NFRAC_MAX_LSB) & DDR_PLL_DITHER2_NFRAC_MAX_MASK)
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#define CPU_DDR_CLOCK_CONTROL_AHBCLK_FROM_DDRPLL_LSB 24
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#define CPU_DDR_CLOCK_CONTROL_AHBCLK_FROM_DDRPLL_MASK 0x01000000
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#define CPU_DDR_CLOCK_CONTROL_AHBCLK_FROM_DDRPLL_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_AHBCLK_FROM_DDRPLL_LSB) & CPU_DDR_CLOCK_CONTROL_AHBCLK_FROM_DDRPLL_MASK)
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#define CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_CPUPLL_LSB 21
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#define CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_CPUPLL_MASK 0x00200000
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#define CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_CPUPLL_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_CPUPLL_LSB) & CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_CPUPLL_MASK)
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#define CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_DDRPLL_LSB 20
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#define CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_DDRPLL_MASK 0x00100000
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#define CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_DDRPLL_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_DDRPLL_LSB) & CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_DDRPLL_MASK)
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#define CPU_DDR_CLOCK_CONTROL_AHB_POST_DIV_LSB 15
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#define CPU_DDR_CLOCK_CONTROL_AHB_POST_DIV_MASK 0x000f8000
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#define CPU_DDR_CLOCK_CONTROL_AHB_POST_DIV_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_AHB_POST_DIV_LSB) & CPU_DDR_CLOCK_CONTROL_AHB_POST_DIV_MASK)
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#define CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV_LSB 10
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#define CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV_MASK 0x00007c00
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#define CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV_LSB) & CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV_MASK)
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#define CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV_LSB 5
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#define CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV_MASK 0x000003e0
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#define CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV_LSB) & CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV_MASK)
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#define CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_LSB 4
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#define CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_MASK 0x00000010
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#define CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_LSB) & CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_MASK)
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#define CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_LSB 3
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#define CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_MASK 0x00000008
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#define CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_LSB) & CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_MASK)
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#define CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_LSB 2
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#define CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_MASK 0x00000004
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#define CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_SET(x) \
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(((x) << CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_LSB) & CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_MASK)
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#define CPU_PLL_CONFIG1_NINT_VAL CPU_PLL_CONFIG1_NINT_SET(0x1f)
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#define CPU_PLL_CONFIG_REF_DIV_VAL CPU_PLL_CONFIG_REFDIV_SET(0x1)
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#define CPU_PLL_CONFIG_RANGE_VAL CPU_PLL_CONFIG_RANGE_SET(0)
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#define CPU_PLL_CONFIG_OUT_DIV_VAL1 CPU_PLL_CONFIG_OUTDIV_SET(0)
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#define CPU_PLL_CONFIG_OUT_DIV_VAL2 CPU_PLL_CONFIG_OUTDIV_SET(0)
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#define CPU_PLL_DITHER1_VAL CPU_PLL_DITHER1_DITHER_EN_SET(0) | \
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CPU_PLL_DITHER1_NFRAC_MIN_SET(0) | \
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CPU_PLL_DITHER1_NFRAC_STEP_SET(0) | \
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CPU_PLL_DITHER1_UPDATE_COUNT_SET(0x0)
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#define CPU_PLL_DITHER2_VAL CPU_PLL_DITHER2_NFRAC_MAX_SET(0x0)
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#define DDR_PLL_CONFIG1_NINT_VAL DDR_PLL_CONFIG1_NINT_SET(0x1a)
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#define DDR_PLL_CONFIG_REF_DIV_VAL DDR_PLL_CONFIG_REFDIV_SET(0x1)
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#define DDR_PLL_CONFIG_RANGE_VAL DDR_PLL_CONFIG_RANGE_SET(0)
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#define DDR_PLL_CONFIG_OUT_DIV_VAL1 DDR_PLL_CONFIG_OUTDIV_SET(0)
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#define DDR_PLL_CONFIG_OUT_DIV_VAL2 DDR_PLL_CONFIG_OUTDIV_SET(0)
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#define DDR_PLL_DITHER1_VAL DDR_PLL_DITHER1_DITHER_EN_SET(0) | \
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DDR_PLL_DITHER1_NFRAC_MIN_SET(0) | \
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DDR_PLL_DITHER1_NFRAC_STEP_SET(0) | \
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DDR_PLL_DITHER1_UPDATE_COUNT_SET(0x0)
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#define DDR_PLL_DITHER2_VAL DDR_PLL_DITHER2_NFRAC_MAX_SET(0x0)
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#define AHB_CLK_FROM_DDR CPU_DDR_CLOCK_CONTROL_AHBCLK_FROM_DDRPLL_SET(0)
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#define CPU_AND_DDR_CLK_FROM_DDR \
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CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_DDRPLL_SET(0)
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#define CPU_AND_DDR_CLK_FROM_CPU \
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CPU_DDR_CLOCK_CONTROL_CPU_DDR_CLK_FROM_CPUPLL_SET(0)
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#define CPU_DDR_CLOCK_CONTROL_AHB_DIV_VAL \
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CPU_DDR_CLOCK_CONTROL_AHB_POST_DIV_SET(0x2)
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#define CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV \
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CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV_SET(0)
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#define CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV \
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CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV_SET(0)
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static inline void set_val(u32 _reg, u32 _mask, u32 _val)
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{
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void __iomem *pll_regs = map_physmem(AR71XX_PLL_BASE,
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AR71XX_PLL_SIZE, MAP_NOCACHE);
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writel((readl(pll_regs + _reg) & (~(_mask))) | _val, pll_regs + _reg);
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}
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#define cpu_pll_set(_mask, _val) \
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set_val(QCA956X_PLL_CPU_CONFIG_REG, _mask, _val)
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#define ddr_pll_set(_mask, _val) \
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set_val(QCA956X_PLL_DDR_CONFIG_REG, _mask, _val)
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#define cpu_ddr_control_set(_mask, _val) \
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set_val(QCA956X_PLL_CLK_CTRL_REG, _mask, _val)
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DECLARE_GLOBAL_DATA_PTR;
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static u32 qca956x_get_xtal(void)
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{
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u32 val;
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val = ath79_get_bootstrap();
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if (val & QCA956X_BOOTSTRAP_REF_CLK_40)
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return 40000000;
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else
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return 25000000;
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}
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int get_serial_clock(void)
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{
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return qca956x_get_xtal();
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}
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void qca956x_pll_init(void)
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{
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void __iomem *srif_regs = map_physmem(QCA956X_SRIF_BASE,
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QCA956X_SRIF_SIZE, MAP_NOCACHE);
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void __iomem *pll_regs = map_physmem(AR71XX_PLL_BASE,
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AR71XX_PLL_SIZE, MAP_NOCACHE);
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/* 8.16.2 Baseband DPLL2 */
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writel(PLL_SRIF_DPLL2_KI_SET(2) | PLL_SRIF_DPLL2_KD_SET(0xa) |
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PLL_SRIF_DPLL2_PLL_PWD_SET(1) | PLL_SRIF_DPLL2_OUTDIV_SET(1) |
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PLL_SRIF_DPLL2_PHASE_SHIFT_SET(6), srif_regs + QCA956X_SRIF_BB_DPLL2_REG);
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/* 8.16.2 PCIE DPLL2 */
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writel(PLL_SRIF_DPLL2_KI_SET(2) | PLL_SRIF_DPLL2_KD_SET(0xa) |
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PLL_SRIF_DPLL2_PLL_PWD_SET(1) | PLL_SRIF_DPLL2_OUTDIV_SET(3) |
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PLL_SRIF_DPLL2_PHASE_SHIFT_SET(6), srif_regs + QCA956X_SRIF_PCIE_DPLL2_REG);
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/* 8.16.2 DDR DPLL2 */
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writel(PLL_SRIF_DPLL2_KI_SET(2) | PLL_SRIF_DPLL2_KD_SET(0xa) |
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PLL_SRIF_DPLL2_PLL_PWD_SET(1) | PLL_SRIF_DPLL2_PHASE_SHIFT_SET(6),
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srif_regs + QCA956X_SRIF_DDR_DPLL2_REG);
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/* 8.16.2 CPU DPLL2 */
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writel(PLL_SRIF_DPLL2_KI_SET(1) | PLL_SRIF_DPLL2_KD_SET(7) |
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PLL_SRIF_DPLL2_PLL_PWD_SET(1) | PLL_SRIF_DPLL2_PHASE_SHIFT_SET(6),
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srif_regs + QCA956X_SRIF_CPU_DPLL2_REG);
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/* pll_bypass_set */
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cpu_ddr_control_set(CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_MASK,
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CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_SET(1));
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cpu_ddr_control_set(CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_MASK,
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CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_SET(1));
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cpu_ddr_control_set(CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_MASK,
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CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_SET(1));
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/* init_cpu_pll */
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cpu_pll_set(CPU_PLL_CONFIG_PLLPWD_MASK, CPU_PLL_CONFIG_PLLPWD_SET(1));
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cpu_pll_set(CPU_PLL_CONFIG_REFDIV_MASK, CPU_PLL_CONFIG_REF_DIV_VAL);
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cpu_pll_set(CPU_PLL_CONFIG_RANGE_MASK, CPU_PLL_CONFIG_RANGE_VAL);
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cpu_pll_set(CPU_PLL_CONFIG_OUTDIV_MASK, CPU_PLL_CONFIG_OUT_DIV_VAL1);
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set_val(QCA956X_PLL_CPU_CONFIG1_REG, CPU_PLL_CONFIG1_NINT_MASK, \
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CPU_PLL_CONFIG1_NINT_VAL);
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/* init_ddr_pll */
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ddr_pll_set(DDR_PLL_CONFIG_PLLPWD_MASK, DDR_PLL_CONFIG_PLLPWD_SET(1));
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ddr_pll_set(DDR_PLL_CONFIG_REFDIV_MASK, DDR_PLL_CONFIG_REF_DIV_VAL);
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ddr_pll_set(DDR_PLL_CONFIG_RANGE_MASK, DDR_PLL_CONFIG_RANGE_VAL);
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ddr_pll_set(DDR_PLL_CONFIG_OUTDIV_MASK, DDR_PLL_CONFIG_OUT_DIV_VAL1);
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set_val(QCA956X_PLL_DDR_CONFIG1_REG, DDR_PLL_CONFIG1_NINT_MASK,
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DDR_PLL_CONFIG1_NINT_VAL);
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/* init_ahb_pll */
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writel(CPU_DDR_CLOCK_CONTROL_AHB_DIV_VAL | AHB_CLK_FROM_DDR |
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CPU_AND_DDR_CLK_FROM_DDR | CPU_AND_DDR_CLK_FROM_CPU |
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CPU_DDR_CLOCK_CONTROL_DDR_POST_DIV | CPU_DDR_CLOCK_CONTROL_CPU_POST_DIV |
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CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_SET(1) |
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CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_SET(1) |
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CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_SET(1), pll_regs + QCA956X_PLL_CLK_CTRL_REG);
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/* ddr_pll_dither_unset */
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writel(DDR_PLL_DITHER1_VAL, pll_regs + QCA956X_PLL_DDR_DIT_FRAC_REG);
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writel(DDR_PLL_DITHER2_VAL, pll_regs + QCA956X_PLL_DDR_DIT2_FRAC_REG);
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/* cpu_pll_dither_unset */
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writel(CPU_PLL_DITHER1_VAL, pll_regs + QCA956X_PLL_CPU_DIT_FRAC_REG);
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writel(CPU_PLL_DITHER2_VAL, pll_regs + QCA956X_PLL_CPU_DIT2_FRAC_REG);
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/* pll_pwd_unset */
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cpu_pll_set(CPU_PLL_CONFIG_PLLPWD_MASK, CPU_PLL_CONFIG_PLLPWD_SET(0));
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ddr_pll_set(DDR_PLL_CONFIG_PLLPWD_MASK, DDR_PLL_CONFIG_PLLPWD_SET(0));
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|
|
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/* outdiv_unset */
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cpu_pll_set(CPU_PLL_CONFIG_OUTDIV_MASK, CPU_PLL_CONFIG_OUT_DIV_VAL2);
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ddr_pll_set(DDR_PLL_CONFIG_OUTDIV_MASK, DDR_PLL_CONFIG_OUT_DIV_VAL2);
|
|
|
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/* pll_bypass_unset */
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cpu_ddr_control_set(CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_MASK,
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CPU_DDR_CLOCK_CONTROL_CPU_PLL_BYPASS_SET(0));
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cpu_ddr_control_set(CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_MASK,
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CPU_DDR_CLOCK_CONTROL_DDR_PLL_BYPASS_SET(0));
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cpu_ddr_control_set(CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_MASK,
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CPU_DDR_CLOCK_CONTROL_AHB_PLL_BYPASS_SET(0));
|
|
|
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while (readl(pll_regs + QCA956X_PLL_CPU_CONFIG_REG) & 0x8000000)
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|
/* NOP */;
|
|
|
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while (readl(pll_regs + QCA956X_PLL_DDR_CONFIG_REG) & 0x8000000)
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/* NOP */;
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|
}
|
|
|
|
int get_clocks(void)
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|
{
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|
void __iomem *regs;
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u32 ref_rate, cpu_rate, ddr_rate, ahb_rate;
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u32 out_div, ref_div, postdiv, nint, hfrac, lfrac, clk_ctrl;
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u32 pll, cpu_pll, ddr_pll, misc;
|
|
|
|
/*
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* QCA956x timer init workaround has to be applied right before setting
|
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* up the clock. Else, there will be no jiffies
|
|
*/
|
|
regs = map_physmem(AR71XX_RESET_BASE, AR71XX_RESET_SIZE,
|
|
MAP_NOCACHE);
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misc = readl(regs + AR71XX_RESET_REG_MISC_INT_ENABLE);
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misc |= MISC_INT_MIPS_SI_TIMERINT_MASK;
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writel(misc, regs + AR71XX_RESET_REG_MISC_INT_ENABLE);
|
|
|
|
regs = map_physmem(AR71XX_PLL_BASE, AR71XX_PLL_SIZE,
|
|
MAP_NOCACHE);
|
|
pll = readl(regs + QCA956X_PLL_CPU_CONFIG_REG);
|
|
out_div = (pll >> QCA956X_PLL_CPU_CONFIG_OUTDIV_SHIFT) &
|
|
QCA956X_PLL_CPU_CONFIG_OUTDIV_MASK;
|
|
ref_div = (pll >> QCA956X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
|
|
QCA956X_PLL_CPU_CONFIG_REFDIV_MASK;
|
|
|
|
pll = readl(regs + QCA956X_PLL_CPU_CONFIG1_REG);
|
|
nint = (pll >> QCA956X_PLL_CPU_CONFIG1_NINT_SHIFT) &
|
|
QCA956X_PLL_CPU_CONFIG1_NINT_MASK;
|
|
hfrac = (pll >> QCA956X_PLL_CPU_CONFIG1_NFRAC_H_SHIFT) &
|
|
QCA956X_PLL_CPU_CONFIG1_NFRAC_H_MASK;
|
|
lfrac = (pll >> QCA956X_PLL_CPU_CONFIG1_NFRAC_L_SHIFT) &
|
|
QCA956X_PLL_CPU_CONFIG1_NFRAC_L_MASK;
|
|
|
|
ref_rate = qca956x_get_xtal();
|
|
|
|
cpu_pll = nint * ref_rate / ref_div;
|
|
cpu_pll += (lfrac * ref_rate) / ((ref_div * 25) << 13);
|
|
cpu_pll += (hfrac >> 13) * ref_rate / ref_div;
|
|
cpu_pll /= (1 << out_div);
|
|
|
|
pll = readl(regs + QCA956X_PLL_DDR_CONFIG_REG);
|
|
out_div = (pll >> QCA956X_PLL_DDR_CONFIG_OUTDIV_SHIFT) &
|
|
QCA956X_PLL_DDR_CONFIG_OUTDIV_MASK;
|
|
ref_div = (pll >> QCA956X_PLL_DDR_CONFIG_REFDIV_SHIFT) &
|
|
QCA956X_PLL_DDR_CONFIG_REFDIV_MASK;
|
|
pll = readl(regs + QCA956X_PLL_DDR_CONFIG1_REG);
|
|
nint = (pll >> QCA956X_PLL_DDR_CONFIG1_NINT_SHIFT) &
|
|
QCA956X_PLL_DDR_CONFIG1_NINT_MASK;
|
|
hfrac = (pll >> QCA956X_PLL_DDR_CONFIG1_NFRAC_H_SHIFT) &
|
|
QCA956X_PLL_DDR_CONFIG1_NFRAC_H_MASK;
|
|
lfrac = (pll >> QCA956X_PLL_DDR_CONFIG1_NFRAC_L_SHIFT) &
|
|
QCA956X_PLL_DDR_CONFIG1_NFRAC_L_MASK;
|
|
|
|
ddr_pll = nint * ref_rate / ref_div;
|
|
ddr_pll += (lfrac * ref_rate) / ((ref_div * 25) << 13);
|
|
ddr_pll += (hfrac >> 13) * ref_rate / ref_div;
|
|
ddr_pll /= (1 << out_div);
|
|
|
|
clk_ctrl = readl(regs + QCA956X_PLL_CLK_CTRL_REG);
|
|
|
|
postdiv = (clk_ctrl >> QCA956X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) &
|
|
QCA956X_PLL_CLK_CTRL_CPU_POST_DIV_MASK;
|
|
|
|
if (clk_ctrl & QCA956X_PLL_CLK_CTRL_CPU_PLL_BYPASS)
|
|
cpu_rate = ref_rate;
|
|
else if (clk_ctrl & QCA956X_PLL_CLK_CTRL_CPU_DDRCLK_FROM_CPUPLL)
|
|
cpu_rate = ddr_pll / (postdiv + 1);
|
|
else
|
|
cpu_rate = cpu_pll / (postdiv + 1);
|
|
|
|
postdiv = (clk_ctrl >> QCA956X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT) &
|
|
QCA956X_PLL_CLK_CTRL_DDR_POST_DIV_MASK;
|
|
|
|
if (clk_ctrl & QCA956X_PLL_CLK_CTRL_DDR_PLL_BYPASS)
|
|
ddr_rate = ref_rate;
|
|
else if (clk_ctrl & QCA956X_PLL_CLK_CTRL_CPU_DDRCLK_FROM_DDRPLL)
|
|
ddr_rate = cpu_pll / (postdiv + 1);
|
|
else
|
|
ddr_rate = ddr_pll / (postdiv + 1);
|
|
|
|
postdiv = (clk_ctrl >> QCA956X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT) &
|
|
QCA956X_PLL_CLK_CTRL_AHB_POST_DIV_MASK;
|
|
|
|
if (clk_ctrl & QCA956X_PLL_CLK_CTRL_AHB_PLL_BYPASS)
|
|
ahb_rate = ref_rate;
|
|
else if (clk_ctrl & QCA956X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL)
|
|
ahb_rate = ddr_pll / (postdiv + 1);
|
|
else
|
|
ahb_rate = cpu_pll / (postdiv + 1);
|
|
|
|
gd->cpu_clk = cpu_rate;
|
|
gd->mem_clk = ddr_rate;
|
|
gd->bus_clk = ahb_rate;
|
|
|
|
debug("cpu_clk=%u, ddr_clk=%u, bus_clk=%u\n",
|
|
cpu_rate, ddr_rate, ahb_rate);
|
|
|
|
return 0;
|
|
}
|
|
|
|
ulong get_bus_freq(ulong dummy)
|
|
{
|
|
if (!gd->bus_clk)
|
|
get_clocks();
|
|
return gd->bus_clk;
|
|
}
|
|
|
|
ulong get_ddr_freq(ulong dummy)
|
|
{
|
|
if (!gd->mem_clk)
|
|
get_clocks();
|
|
return gd->mem_clk;
|
|
}
|