| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2016 Rockchip Inc. |
| * |
| * 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 of the License. |
| * |
| * 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 <assert.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <soc/addressmap.h> |
| #include <soc/clock.h> |
| #include <soc/grf.h> |
| #include <soc/i2c.h> |
| #include <soc/soc.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| struct pll_div { |
| u32 refdiv; |
| u32 fbdiv; |
| u32 postdiv1; |
| u32 postdiv2; |
| u32 frac; |
| u32 freq; |
| }; |
| |
| #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\ |
| .refdiv = _refdiv,\ |
| .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\ |
| .postdiv1 = _postdiv1, .postdiv2 = _postdiv2, .freq = hz};\ |
| _Static_assert(((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ) *\ |
| OSC_HZ / (_refdiv * _postdiv1 * _postdiv2) == hz,\ |
| STRINGIFY(hz) " Hz cannot be hit with PLL "\ |
| "divisors on line " STRINGIFY(__LINE__)) |
| |
| static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 1, 4, 1); |
| static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 3, 1); |
| static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 3, 2, 1); |
| |
| static const struct pll_div apll_1512_cfg = PLL_DIVISORS(1512*MHz, 1, 1, 1); |
| static const struct pll_div apll_600_cfg = PLL_DIVISORS(600*MHz, 1, 3, 1); |
| |
| static const struct pll_div *apll_cfgs[] = { |
| [APLL_1512_MHZ] = &apll_1512_cfg, |
| [APLL_600_MHZ] = &apll_600_cfg, |
| }; |
| |
| enum { |
| /* PLL_CON0 */ |
| PLL_FBDIV_MASK = 0xfff, |
| PLL_FBDIV_SHIFT = 0, |
| |
| /* PLL_CON1 */ |
| PLL_POSTDIV2_MASK = 0x7, |
| PLL_POSTDIV2_SHIFT = 12, |
| PLL_POSTDIV1_MASK = 0x7, |
| PLL_POSTDIV1_SHIFT = 8, |
| PLL_REFDIV_MASK = 0x3f, |
| PLL_REFDIV_SHIFT = 0, |
| |
| /* PLL_CON2 */ |
| PLL_LOCK_STATUS_MASK = 1, |
| PLL_LOCK_STATUS_SHIFT = 31, |
| PLL_FRACDIV_MASK = 0xffffff, |
| PLL_FRACDIV_SHIFT = 0, |
| |
| /* PLL_CON3 */ |
| PLL_MODE_MASK = 3, |
| PLL_MODE_SHIFT = 8, |
| PLL_MODE_SLOW = 0, |
| PLL_MODE_NORM, |
| PLL_MODE_DEEP, |
| PLL_DSMPD_MASK = 1, |
| PLL_DSMPD_SHIFT = 3, |
| PLL_INTEGER_MODE = 1, |
| |
| /* PMUCRU_CLKSEL_CON0 */ |
| PMU_PCLK_DIV_CON_MASK = 0x1f, |
| PMU_PCLK_DIV_CON_SHIFT = 0, |
| |
| /* PMUCRU_CLKSEL_CON1 */ |
| SPI3_PLL_SEL_MASK = 1, |
| SPI3_PLL_SEL_SHIFT = 7, |
| SPI3_PLL_SEL_24M = 0, |
| SPI3_PLL_SEL_PPLL = 1, |
| SPI3_DIV_CON_MASK = 0x7f, |
| SPI3_DIV_CON_SHIFT = 0x0, |
| |
| /* PMUCRU_CLKSEL_CON2 */ |
| I2C_DIV_CON_MASK = 0x7f, |
| I2C8_DIV_CON_SHIFT = 8, |
| I2C0_DIV_CON_SHIFT = 0, |
| |
| /* PMUCRU_CLKSEL_CON3 */ |
| I2C4_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON0 / CLKSEL_CON2 */ |
| ACLKM_CORE_DIV_CON_MASK = 0x1f, |
| ACLKM_CORE_DIV_CON_SHIFT = 8, |
| CLK_CORE_PLL_SEL_MASK = 3, |
| CLK_CORE_PLL_SEL_SHIFT = 6, |
| CLK_CORE_PLL_SEL_ALPLL = 0x0, |
| CLK_CORE_PLL_SEL_ABPLL = 0x1, |
| CLK_CORE_PLL_SEL_DPLL = 0x10, |
| CLK_CORE_PLL_SEL_GPLL = 0x11, |
| CLK_CORE_DIV_MASK = 0x1f, |
| CLK_CORE_DIV_SHIFT = 0, |
| |
| /* CLKSEL_CON1 / CLKSEL_CON3 */ |
| PCLK_DBG_DIV_MASK = 0x1f, |
| PCLK_DBG_DIV_SHIFT = 0x8, |
| ATCLK_CORE_DIV_MASK = 0x1f, |
| ATCLK_CORE_DIV_SHIFT = 0, |
| |
| /* CLKSEL_CON14 */ |
| PCLK_PERIHP_DIV_CON_MASK = 0x7, |
| PCLK_PERIHP_DIV_CON_SHIFT = 12, |
| HCLK_PERIHP_DIV_CON_MASK = 3, |
| HCLK_PERIHP_DIV_CON_SHIFT = 8, |
| ACLK_PERIHP_PLL_SEL_MASK = 1, |
| ACLK_PERIHP_PLL_SEL_SHIFT = 7, |
| ACLK_PERIHP_PLL_SEL_CPLL = 0, |
| ACLK_PERIHP_PLL_SEL_GPLL = 1, |
| ACLK_PERIHP_DIV_CON_MASK = 0x1f, |
| ACLK_PERIHP_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON21 */ |
| ACLK_EMMC_PLL_SEL_MASK = 0x1, |
| ACLK_EMMC_PLL_SEL_SHIFT = 7, |
| ACLK_EMMC_PLL_SEL_GPLL = 0x1, |
| ACLK_EMMC_DIV_CON_MASK = 0x1f, |
| ACLK_EMMC_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON22 */ |
| CLK_EMMC_PLL_MASK = 0x7, |
| CLK_EMMC_PLL_SHIFT = 8, |
| CLK_EMMC_PLL_SEL_GPLL = 0x1, |
| CLK_EMMC_DIV_CON_MASK = 0x7f, |
| CLK_EMMC_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON23 */ |
| PCLK_PERILP0_DIV_CON_MASK = 0x7, |
| PCLK_PERILP0_DIV_CON_SHIFT = 12, |
| HCLK_PERILP0_DIV_CON_MASK = 3, |
| HCLK_PERILP0_DIV_CON_SHIFT = 8, |
| ACLK_PERILP0_PLL_SEL_MASK = 1, |
| ACLK_PERILP0_PLL_SEL_SHIFT = 7, |
| ACLK_PERILP0_PLL_SEL_CPLL = 0, |
| ACLK_PERILP0_PLL_SEL_GPLL = 1, |
| ACLK_PERILP0_DIV_CON_MASK = 0x1f, |
| ACLK_PERILP0_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON25 */ |
| PCLK_PERILP1_DIV_CON_MASK = 0x7, |
| PCLK_PERILP1_DIV_CON_SHIFT = 8, |
| HCLK_PERILP1_PLL_SEL_MASK = 1, |
| HCLK_PERILP1_PLL_SEL_SHIFT = 7, |
| HCLK_PERILP1_PLL_SEL_CPLL = 0, |
| HCLK_PERILP1_PLL_SEL_GPLL = 1, |
| HCLK_PERILP1_DIV_CON_MASK = 0x1f, |
| HCLK_PERILP1_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON26 */ |
| CLK_SARADC_DIV_CON_MASK = 0xff, |
| CLK_SARADC_DIV_CON_SHIFT = 8, |
| |
| /* CLKSEL_CON27 */ |
| CLK_TSADC_SEL_X24M = 0x0, |
| CLK_TSADC_SEL_MASK = 1, |
| CLK_TSADC_SEL_SHIFT = 15, |
| CLK_TSADC_DIV_CON_MASK = 0x3ff, |
| CLK_TSADC_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON44 */ |
| CLK_PCLK_EDP_PLL_SEL_MASK = 1, |
| CLK_PCLK_EDP_PLL_SEL_SHIFT = 15, |
| CLK_PCLK_EDP_PLL_SEL_CPLL = 0, |
| CLK_PCLK_EDP_DIV_CON_MASK = 0x3f, |
| CLK_PCLK_EDP_DIV_CON_SHIFT = 8, |
| |
| /* CLKSEL_CON47 & CLKSEL_CON48 */ |
| ACLK_VOP_PLL_SEL_MASK = 0x3, |
| ACLK_VOP_PLL_SEL_SHIFT = 6, |
| ACLK_VOP_PLL_SEL_CPLL = 0x1, |
| ACLK_VOP_DIV_CON_MASK = 0x1f, |
| ACLK_VOP_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON49 & CLKSEL_CON50 */ |
| DCLK_VOP_DCLK_SEL_MASK = 1, |
| DCLK_VOP_DCLK_SEL_SHIFT = 11, |
| DCLK_VOP_DCLK_SEL_DIVOUT = 0, |
| DCLK_VOP_PLL_SEL_MASK = 3, |
| DCLK_VOP_PLL_SEL_SHIFT = 8, |
| DCLK_VOP_PLL_SEL_VPLL = 0, |
| DCLK_VOP_DIV_CON_MASK = 0xff, |
| DCLK_VOP_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON58 */ |
| CLK_SPI_PLL_SEL_MASK = 1, |
| CLK_SPI_PLL_SEL_CPLL = 0, |
| CLK_SPI_PLL_SEL_GPLL = 1, |
| CLK_SPI_PLL_DIV_CON_MASK = 0x7f, |
| CLK_SPI5_PLL_DIV_CON_SHIFT = 8, |
| CLK_SPI5_PLL_SEL_SHIFT = 15, |
| |
| /* CLKSEL_CON59 */ |
| CLK_SPI1_PLL_SEL_SHIFT = 15, |
| CLK_SPI1_PLL_DIV_CON_SHIFT = 8, |
| CLK_SPI0_PLL_SEL_SHIFT = 7, |
| CLK_SPI0_PLL_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON60 */ |
| CLK_SPI4_PLL_SEL_SHIFT = 15, |
| CLK_SPI4_PLL_DIV_CON_SHIFT = 8, |
| CLK_SPI2_PLL_SEL_SHIFT = 7, |
| CLK_SPI2_PLL_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON61 */ |
| CLK_I2C_PLL_SEL_MASK = 1, |
| CLK_I2C_PLL_SEL_CPLL = 0, |
| CLK_I2C_PLL_SEL_GPLL = 1, |
| CLK_I2C5_PLL_SEL_SHIFT = 15, |
| CLK_I2C5_DIV_CON_SHIFT = 8, |
| CLK_I2C1_PLL_SEL_SHIFT = 7, |
| CLK_I2C1_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON62 */ |
| CLK_I2C6_PLL_SEL_SHIFT = 15, |
| CLK_I2C6_DIV_CON_SHIFT = 8, |
| CLK_I2C2_PLL_SEL_SHIFT = 7, |
| CLK_I2C2_DIV_CON_SHIFT = 0, |
| |
| /* CLKSEL_CON63 */ |
| CLK_I2C7_PLL_SEL_SHIFT = 15, |
| CLK_I2C7_DIV_CON_SHIFT = 8, |
| CLK_I2C3_PLL_SEL_SHIFT = 7, |
| CLK_I2C3_DIV_CON_SHIFT = 0, |
| |
| /* CRU_SOFTRST_CON4 */ |
| RESETN_DDR0_REQ_MASK = 1, |
| RESETN_DDR0_REQ_SHIFT = 8, |
| RESETN_DDRPHY0_REQ_MASK = 1, |
| RESETN_DDRPHY0_REQ_SHIFT = 9, |
| RESETN_DDR1_REQ_MASK = 1, |
| RESETN_DDR1_REQ_SHIFT = 12, |
| RESETN_DDRPHY1_REQ_MASK = 1, |
| RESETN_DDRPHY1_REQ_SHIFT = 13, |
| }; |
| |
| #define VCO_MAX_KHZ (3200 * (MHz / KHz)) |
| #define VCO_MIN_KHZ (800 * (MHz / KHz)) |
| #define OUTPUT_MAX_KHZ (3200 * (MHz / KHz)) |
| #define OUTPUT_MIN_KHZ (16 * (MHz / KHz)) |
| |
| /* the div restrictions of pll in integer mode, |
| * these are defined in * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0 |
| */ |
| #define PLL_DIV_MIN 16 |
| #define PLL_DIV_MAX 3200 |
| |
| /* How to calculate the PLL(from TRM V0.3 Part 1 Page 63): |
| * Formulas also embedded within the Fractional PLL Verilog model: |
| * If DSMPD = 1 (DSM is disabled, "integer mode") |
| * FOUTVCO = FREF / REFDIV * FBDIV |
| * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2 |
| * Where: |
| * FOUTVCO = Fractional PLL non-divided output frequency |
| * FOUTPOSTDIV = Fractional PLL divided output frequency |
| * (output of second post divider) |
| * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input) |
| * REFDIV = Fractional PLL input reference clock divider |
| * FBDIV = Integer value programmed into feedback divide |
| * |
| */ |
| static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div) |
| { |
| /* All 8 PLLs have same VCO and output frequency range restrictions. */ |
| u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv; |
| u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2; |
| |
| printk(BIOS_DEBUG, "PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, " |
| "postdiv2=%d, vco=%u khz, output=%u khz\n", |
| pll_con, div->fbdiv, div->refdiv, div->postdiv1, |
| div->postdiv2, vco_khz, output_khz); |
| assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ && |
| output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ && |
| div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX); |
| |
| /* When power on or changing PLL setting, |
| * we must force PLL into slow mode to ensure output stable clock. |
| */ |
| write32(&pll_con[3], RK_CLRSETBITS(PLL_MODE_MASK << PLL_MODE_SHIFT, |
| PLL_MODE_SLOW << PLL_MODE_SHIFT)); |
| |
| /* use integer mode */ |
| write32(&pll_con[3], |
| RK_CLRSETBITS(PLL_DSMPD_MASK << PLL_DSMPD_SHIFT, |
| PLL_INTEGER_MODE << PLL_DSMPD_SHIFT)); |
| |
| write32(&pll_con[0], RK_CLRSETBITS(PLL_FBDIV_MASK << PLL_FBDIV_SHIFT, |
| div->fbdiv << PLL_FBDIV_SHIFT)); |
| write32(&pll_con[1], |
| RK_CLRSETBITS(PLL_POSTDIV2_MASK << PLL_POSTDIV2_SHIFT | |
| PLL_POSTDIV1_MASK << PLL_POSTDIV1_SHIFT | |
| PLL_REFDIV_MASK | PLL_REFDIV_SHIFT, |
| (div->postdiv2 << PLL_POSTDIV2_SHIFT) | |
| (div->postdiv1 << PLL_POSTDIV1_SHIFT) | |
| (div->refdiv << PLL_REFDIV_SHIFT))); |
| |
| /* waiting for pll lock */ |
| while (!(read32(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT))) |
| udelay(1); |
| |
| /* pll enter normal mode */ |
| write32(&pll_con[3], RK_CLRSETBITS(PLL_MODE_MASK << PLL_MODE_SHIFT, |
| PLL_MODE_NORM << PLL_MODE_SHIFT)); |
| } |
| |
| static int pll_para_config(u32 freq_hz, struct pll_div *div) |
| { |
| u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0; |
| u32 postdiv1, postdiv2 = 1; |
| u32 fref_khz; |
| u32 diff_khz, best_diff_khz; |
| const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16; |
| const u32 max_postdiv1 = 7, max_postdiv2 = 7; |
| u32 vco_khz; |
| u32 freq_khz = freq_hz / KHz; |
| |
| if (!freq_hz) { |
| printk(BIOS_ERR, "%s: the frequency can't be 0 Hz\n", __func__); |
| return -1; |
| } |
| |
| postdiv1 = div_round_up(VCO_MIN_KHZ, freq_khz); |
| if (postdiv1 > max_postdiv1) { |
| postdiv2 = div_round_up(postdiv1, max_postdiv1); |
| postdiv1 = div_round_up(postdiv1, postdiv2); |
| } |
| |
| vco_khz = freq_khz * postdiv1 * postdiv2; |
| |
| if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ || |
| postdiv2 > max_postdiv2) { |
| printk(BIOS_ERR, "%s: Cannot find out a supported VCO" |
| " for Frequency (%uHz).\n", __func__, freq_hz); |
| return -1; |
| } |
| |
| div->postdiv1 = postdiv1; |
| div->postdiv2 = postdiv2; |
| |
| best_diff_khz = vco_khz; |
| for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) { |
| fref_khz = ref_khz / refdiv; |
| |
| fbdiv = vco_khz / fref_khz; |
| if ((fbdiv >= max_fbdiv) || (fbdiv <= min_fbdiv)) |
| continue; |
| diff_khz = vco_khz - fbdiv * fref_khz; |
| if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) { |
| fbdiv++; |
| diff_khz = fref_khz - diff_khz; |
| } |
| |
| if (diff_khz >= best_diff_khz) |
| continue; |
| |
| best_diff_khz = diff_khz; |
| div->refdiv = refdiv; |
| div->fbdiv = fbdiv; |
| } |
| |
| if (best_diff_khz > 4 * (MHz/KHz)) { |
| printk(BIOS_ERR, "%s: Failed to match output frequency %u, " |
| "difference is %u Hz,exceed 4MHZ\n", __func__, freq_hz, |
| best_diff_khz * KHz); |
| return -1; |
| } |
| return 0; |
| } |
| |
| void rkclk_init(void) |
| { |
| u32 aclk_div; |
| u32 hclk_div; |
| u32 pclk_div; |
| |
| /* some cru registers changed by bootrom, we'd better reset them to |
| * reset/default values described in TRM to avoid confusion in kernel. |
| * Please consider these threee lines as a fix of bootrom bug. |
| */ |
| write32(&cru_ptr->clksel_con[12], 0xffff4101); |
| write32(&cru_ptr->clksel_con[19], 0xffff033f); |
| write32(&cru_ptr->clksel_con[56], 0x00030003); |
| |
| /* configure pmu pll(ppll) */ |
| rkclk_set_pll(&pmucru_ptr->ppll_con[0], &ppll_init_cfg); |
| |
| /* configure pmu pclk */ |
| pclk_div = PPLL_HZ / PMU_PCLK_HZ - 1; |
| assert((unsigned int)(PPLL_HZ - (pclk_div + 1) * PMU_PCLK_HZ) <= pclk_div |
| && pclk_div <= 0x1f); |
| write32(&pmucru_ptr->pmucru_clksel[0], |
| RK_CLRSETBITS(PMU_PCLK_DIV_CON_MASK << PMU_PCLK_DIV_CON_SHIFT, |
| pclk_div << PMU_PCLK_DIV_CON_SHIFT)); |
| |
| /* configure gpll cpll */ |
| rkclk_set_pll(&cru_ptr->gpll_con[0], &gpll_init_cfg); |
| rkclk_set_pll(&cru_ptr->cpll_con[0], &cpll_init_cfg); |
| |
| /* configure perihp aclk, hclk, pclk */ |
| aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1; |
| assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f); |
| |
| hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1; |
| assert((hclk_div + 1) * PERIHP_HCLK_HZ == |
| PERIHP_ACLK_HZ && (hclk_div <= 0x3)); |
| |
| pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1; |
| assert((pclk_div + 1) * PERIHP_PCLK_HZ == |
| PERIHP_ACLK_HZ && (pclk_div <= 0x7)); |
| |
| write32(&cru_ptr->clksel_con[14], |
| RK_CLRSETBITS(PCLK_PERIHP_DIV_CON_MASK << |
| PCLK_PERIHP_DIV_CON_SHIFT | |
| HCLK_PERIHP_DIV_CON_MASK << |
| HCLK_PERIHP_DIV_CON_SHIFT | |
| ACLK_PERIHP_PLL_SEL_MASK << |
| ACLK_PERIHP_PLL_SEL_SHIFT | |
| ACLK_PERIHP_DIV_CON_MASK << |
| ACLK_PERIHP_DIV_CON_SHIFT, |
| pclk_div << PCLK_PERIHP_DIV_CON_SHIFT | |
| hclk_div << HCLK_PERIHP_DIV_CON_SHIFT | |
| ACLK_PERIHP_PLL_SEL_GPLL << |
| ACLK_PERIHP_PLL_SEL_SHIFT | |
| aclk_div << ACLK_PERIHP_DIV_CON_SHIFT)); |
| |
| /* configure perilp0 aclk, hclk, pclk */ |
| aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1; |
| assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f); |
| |
| hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1; |
| assert((hclk_div + 1) * PERILP0_HCLK_HZ == |
| PERILP0_ACLK_HZ && (hclk_div <= 0x3)); |
| |
| pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1; |
| assert((pclk_div + 1) * PERILP0_PCLK_HZ == |
| PERILP0_ACLK_HZ && (pclk_div <= 0x7)); |
| |
| write32(&cru_ptr->clksel_con[23], |
| RK_CLRSETBITS(PCLK_PERILP0_DIV_CON_MASK << |
| PCLK_PERILP0_DIV_CON_SHIFT | |
| HCLK_PERILP0_DIV_CON_MASK << |
| HCLK_PERILP0_DIV_CON_SHIFT | |
| ACLK_PERILP0_PLL_SEL_MASK << |
| ACLK_PERILP0_PLL_SEL_SHIFT | |
| ACLK_PERILP0_DIV_CON_MASK << |
| ACLK_PERILP0_DIV_CON_SHIFT, |
| pclk_div << PCLK_PERILP0_DIV_CON_SHIFT | |
| hclk_div << HCLK_PERILP0_DIV_CON_SHIFT | |
| ACLK_PERILP0_PLL_SEL_GPLL << |
| ACLK_PERILP0_PLL_SEL_SHIFT | |
| aclk_div << ACLK_PERILP0_DIV_CON_SHIFT)); |
| |
| /* perilp1 hclk select gpll as source */ |
| hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1; |
| assert((hclk_div + 1) * PERILP1_HCLK_HZ == |
| GPLL_HZ && (hclk_div <= 0x1f)); |
| |
| pclk_div = PERILP1_HCLK_HZ / PERILP1_PCLK_HZ - 1; |
| assert((pclk_div + 1) * PERILP1_PCLK_HZ == |
| PERILP1_HCLK_HZ && (pclk_div <= 0x7)); |
| |
| write32(&cru_ptr->clksel_con[25], |
| RK_CLRSETBITS(PCLK_PERILP1_DIV_CON_MASK << |
| PCLK_PERILP1_DIV_CON_SHIFT | |
| HCLK_PERILP1_DIV_CON_MASK << |
| HCLK_PERILP1_DIV_CON_SHIFT | |
| HCLK_PERILP1_PLL_SEL_MASK << |
| HCLK_PERILP1_PLL_SEL_SHIFT, |
| pclk_div << PCLK_PERILP1_DIV_CON_SHIFT | |
| hclk_div << HCLK_PERILP1_DIV_CON_SHIFT | |
| HCLK_PERILP1_PLL_SEL_GPLL << |
| HCLK_PERILP1_PLL_SEL_SHIFT)); |
| } |
| |
| void rkclk_configure_cpu(enum apll_frequencies freq, enum cpu_cluster cluster) |
| { |
| u32 aclkm_div, atclk_div, pclk_dbg_div, apll_hz; |
| int con_base, parent; |
| u32 *pll_con; |
| |
| switch (cluster) { |
| case CPU_CLUSTER_LITTLE: |
| con_base = 0; |
| parent = CLK_CORE_PLL_SEL_ALPLL; |
| pll_con = &cru_ptr->apll_l_con[0]; |
| break; |
| case CPU_CLUSTER_BIG: |
| default: |
| con_base = 2; |
| parent = CLK_CORE_PLL_SEL_ABPLL; |
| pll_con = &cru_ptr->apll_b_con[0]; |
| break; |
| } |
| |
| apll_hz = apll_cfgs[freq]->freq; |
| rkclk_set_pll(pll_con, apll_cfgs[freq]); |
| |
| aclkm_div = div_round_up(apll_hz, ACLKM_CORE_HZ) - 1; |
| pclk_dbg_div = div_round_up(apll_hz, PCLK_DBG_HZ) - 1; |
| atclk_div = div_round_up(apll_hz, ATCLK_CORE_HZ) - 1; |
| |
| write32(&cru_ptr->clksel_con[con_base], |
| RK_CLRSETBITS(ACLKM_CORE_DIV_CON_MASK << |
| ACLKM_CORE_DIV_CON_SHIFT | |
| CLK_CORE_PLL_SEL_MASK << CLK_CORE_PLL_SEL_SHIFT | |
| CLK_CORE_DIV_MASK << CLK_CORE_DIV_SHIFT, |
| aclkm_div << ACLKM_CORE_DIV_CON_SHIFT | |
| parent << CLK_CORE_PLL_SEL_SHIFT | |
| 0 << CLK_CORE_DIV_SHIFT)); |
| |
| write32(&cru_ptr->clksel_con[con_base + 1], |
| RK_CLRSETBITS(PCLK_DBG_DIV_MASK << PCLK_DBG_DIV_SHIFT | |
| ATCLK_CORE_DIV_MASK << ATCLK_CORE_DIV_SHIFT, |
| pclk_dbg_div << PCLK_DBG_DIV_SHIFT | |
| atclk_div << ATCLK_CORE_DIV_SHIFT)); |
| } |
| |
| void rkclk_configure_ddr(unsigned int hz) |
| { |
| struct pll_div dpll_cfg; |
| |
| /* IC ECO bug, need to set this register */ |
| write32(&rk3399_pmusgrf->ddr_rgn_con[16], 0xc000c000); |
| |
| /* clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */ |
| switch (hz) { |
| case 200*MHz: |
| dpll_cfg = (struct pll_div) |
| {.refdiv = 1, .fbdiv = 50, .postdiv1 = 6, .postdiv2 = 1}; |
| break; |
| case 300*MHz: |
| dpll_cfg = (struct pll_div) |
| {.refdiv = 2, .fbdiv = 100, .postdiv1 = 4, .postdiv2 = 1}; |
| break; |
| case 666*MHz: |
| dpll_cfg = (struct pll_div) |
| {.refdiv = 2, .fbdiv = 111, .postdiv1 = 2, .postdiv2 = 1}; |
| break; |
| case 800*MHz: |
| dpll_cfg = (struct pll_div) |
| {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1}; |
| break; |
| case 933*MHz: |
| dpll_cfg = (struct pll_div) |
| {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1}; |
| break; |
| default: |
| die("Unsupported SDRAM frequency, add to clock.c!"); |
| } |
| rkclk_set_pll(&cru_ptr->dpll_con[0], &dpll_cfg); |
| } |
| |
| #define SPI_CLK_REG_VALUE(bus, clk_div) \ |
| RK_CLRSETBITS(CLK_SPI_PLL_SEL_MASK << \ |
| CLK_SPI ##bus## _PLL_SEL_SHIFT | \ |
| CLK_SPI_PLL_DIV_CON_MASK << \ |
| CLK_SPI ##bus## _PLL_DIV_CON_SHIFT, \ |
| CLK_SPI_PLL_SEL_GPLL << \ |
| CLK_SPI ##bus## _PLL_SEL_SHIFT | \ |
| (clk_div - 1) << \ |
| CLK_SPI ##bus## _PLL_DIV_CON_SHIFT) |
| |
| void rkclk_configure_spi(unsigned int bus, unsigned int hz) |
| { |
| int src_clk_div; |
| int pll; |
| |
| /* spi3 src clock from ppll, while spi0,1,2,4,5 src clock from gpll */ |
| pll = (bus == 3) ? PPLL_HZ : GPLL_HZ; |
| src_clk_div = pll / hz; |
| assert((src_clk_div - 1 <= 127) && (src_clk_div * hz == pll)); |
| |
| switch (bus) { |
| case 0: |
| write32(&cru_ptr->clksel_con[59], |
| SPI_CLK_REG_VALUE(0, src_clk_div)); |
| break; |
| case 1: |
| write32(&cru_ptr->clksel_con[59], |
| SPI_CLK_REG_VALUE(1, src_clk_div)); |
| break; |
| case 2: |
| write32(&cru_ptr->clksel_con[60], |
| SPI_CLK_REG_VALUE(2, src_clk_div)); |
| break; |
| case 3: |
| write32(&pmucru_ptr->pmucru_clksel[1], |
| RK_CLRSETBITS(SPI3_PLL_SEL_MASK << SPI3_PLL_SEL_SHIFT | |
| SPI3_DIV_CON_MASK << SPI3_DIV_CON_SHIFT, |
| SPI3_PLL_SEL_PPLL << SPI3_PLL_SEL_SHIFT | |
| (src_clk_div - 1) << SPI3_DIV_CON_SHIFT)); |
| break; |
| case 4: |
| write32(&cru_ptr->clksel_con[60], |
| SPI_CLK_REG_VALUE(4, src_clk_div)); |
| break; |
| case 5: |
| write32(&cru_ptr->clksel_con[58], |
| SPI_CLK_REG_VALUE(5, src_clk_div)); |
| break; |
| default: |
| printk(BIOS_ERR, "do not support this spi bus\n"); |
| } |
| } |
| |
| #define I2C_CLK_REG_VALUE(bus, clk_div) \ |
| RK_CLRSETBITS(I2C_DIV_CON_MASK << \ |
| CLK_I2C ##bus## _DIV_CON_SHIFT | \ |
| CLK_I2C_PLL_SEL_MASK << \ |
| CLK_I2C ##bus## _PLL_SEL_SHIFT, \ |
| (clk_div - 1) << \ |
| CLK_I2C ##bus## _DIV_CON_SHIFT | \ |
| CLK_I2C_PLL_SEL_GPLL << \ |
| CLK_I2C ##bus## _PLL_SEL_SHIFT) |
| #define PMU_I2C_CLK_REG_VALUE(bus, clk_div) \ |
| RK_CLRSETBITS(I2C_DIV_CON_MASK << I2C ##bus## _DIV_CON_SHIFT, \ |
| (clk_div - 1) << I2C ##bus## _DIV_CON_SHIFT) |
| |
| uint32_t rkclk_i2c_clock_for_bus(unsigned int bus) |
| { |
| int src_clk_div, pll, freq; |
| |
| /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll */ |
| if (bus == 0 || bus == 4 || bus == 8) { |
| pll = PPLL_HZ; |
| freq = 338*MHz; |
| } else { |
| pll = GPLL_HZ; |
| freq = 198*MHz; |
| } |
| src_clk_div = pll / freq; |
| assert((src_clk_div - 1 <= 127) && (src_clk_div * freq == pll)); |
| |
| switch (bus) { |
| case 0: |
| write32(&pmucru_ptr->pmucru_clksel[2], |
| PMU_I2C_CLK_REG_VALUE(0, src_clk_div)); |
| break; |
| case 1: |
| write32(&cru_ptr->clksel_con[61], |
| I2C_CLK_REG_VALUE(1, src_clk_div)); |
| break; |
| case 2: |
| write32(&cru_ptr->clksel_con[62], |
| I2C_CLK_REG_VALUE(2, src_clk_div)); |
| break; |
| case 3: |
| write32(&cru_ptr->clksel_con[63], |
| I2C_CLK_REG_VALUE(3, src_clk_div)); |
| break; |
| case 4: |
| write32(&pmucru_ptr->pmucru_clksel[3], |
| PMU_I2C_CLK_REG_VALUE(4, src_clk_div)); |
| break; |
| case 5: |
| write32(&cru_ptr->clksel_con[61], |
| I2C_CLK_REG_VALUE(5, src_clk_div)); |
| break; |
| case 6: |
| write32(&cru_ptr->clksel_con[62], |
| I2C_CLK_REG_VALUE(6, src_clk_div)); |
| break; |
| case 7: |
| write32(&cru_ptr->clksel_con[63], |
| I2C_CLK_REG_VALUE(7, src_clk_div)); |
| break; |
| case 8: |
| write32(&pmucru_ptr->pmucru_clksel[2], |
| PMU_I2C_CLK_REG_VALUE(8, src_clk_div)); |
| break; |
| default: |
| die("unknown i2c bus\n"); |
| } |
| |
| return freq; |
| } |
| |
| static u32 clk_gcd(u32 a, u32 b) |
| { |
| while (b != 0) { |
| int r = b; |
| b = a % b; |
| a = r; |
| } |
| return a; |
| } |
| |
| void rkclk_configure_i2s(unsigned int hz) |
| { |
| int n, d; |
| int v; |
| |
| /** |
| * clk_i2s0_sel: divider ouput from fraction |
| * clk_i2s0_pll_sel source clock: cpll |
| * clk_i2s0_div_con: 1 (div+1) |
| */ |
| write32(&cru_ptr->clksel_con[28], |
| RK_CLRSETBITS(3 << 8 | 1 << 7 | 0x7f << 0, |
| 1 << 8 | 0 << 7 | 0 << 0)); |
| |
| /* make sure and enable i2s0 path gates */ |
| write32(&cru_ptr->clkgate_con[8], |
| RK_CLRBITS(1 << 12 | 1 << 5 | 1 << 4 | 1 << 3)); |
| |
| /* set frac divider */ |
| v = clk_gcd(CPLL_HZ, hz); |
| n = (CPLL_HZ / v) & (0xffff); |
| d = (hz / v) & (0xffff); |
| assert(hz == (u64)CPLL_HZ * d / n); |
| write32(&cru_ptr->clksel_con[96], d << 16 | n); |
| |
| /** |
| * clk_i2sout_sel clk_i2s |
| * clk_i2s_ch_sel: clk_i2s0 |
| */ |
| write32(&cru_ptr->clksel_con[31], |
| RK_CLRSETBITS(1 << 2 | 3 << 0, |
| 0 << 2 | 0 << 0)); |
| } |
| |
| void rkclk_configure_saradc(unsigned int hz) |
| { |
| int src_clk_div; |
| |
| /* saradc src clk from 24MHz */ |
| src_clk_div = 24 * MHz / hz; |
| assert((src_clk_div - 1 <= 255) && (src_clk_div * hz == 24 * MHz)); |
| |
| write32(&cru_ptr->clksel_con[26], |
| RK_CLRSETBITS(CLK_SARADC_DIV_CON_MASK << |
| CLK_SARADC_DIV_CON_SHIFT, |
| (src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT)); |
| } |
| |
| void rkclk_configure_vop_aclk(u32 vop_id, u32 aclk_hz) |
| { |
| u32 div; |
| void *reg_addr = vop_id ? &cru_ptr->clksel_con[48] : |
| &cru_ptr->clksel_con[47]; |
| |
| /* vop aclk source clk: cpll */ |
| div = CPLL_HZ / aclk_hz; |
| assert((div - 1 <= 31) && (div * aclk_hz == CPLL_HZ)); |
| |
| write32(reg_addr, RK_CLRSETBITS( |
| ACLK_VOP_PLL_SEL_MASK << ACLK_VOP_PLL_SEL_SHIFT | |
| ACLK_VOP_DIV_CON_MASK << ACLK_VOP_DIV_CON_SHIFT, |
| ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT | |
| (div - 1) << ACLK_VOP_DIV_CON_SHIFT)); |
| } |
| |
| int rkclk_configure_vop_dclk(u32 vop_id, u32 dclk_hz) |
| { |
| struct pll_div vpll_config = {0}; |
| void *reg_addr = vop_id ? &cru_ptr->clksel_con[50] : |
| &cru_ptr->clksel_con[49]; |
| |
| /* vop dclk source from vpll, and equals to vpll(means div == 1) */ |
| if (pll_para_config(dclk_hz, &vpll_config)) |
| return -1; |
| |
| rkclk_set_pll(&cru_ptr->vpll_con[0], &vpll_config); |
| |
| write32(reg_addr, RK_CLRSETBITS( |
| DCLK_VOP_DCLK_SEL_MASK << DCLK_VOP_DCLK_SEL_SHIFT | |
| DCLK_VOP_PLL_SEL_MASK << DCLK_VOP_PLL_SEL_SHIFT | |
| DCLK_VOP_DIV_CON_MASK << DCLK_VOP_DIV_CON_SHIFT, |
| DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT | |
| DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT | |
| (1 - 1) << DCLK_VOP_DIV_CON_SHIFT)); |
| |
| return 0; |
| } |
| |
| void rkclk_configure_tsadc(unsigned int hz) |
| { |
| int src_clk_div; |
| |
| /* use 24M as src clock */ |
| src_clk_div = OSC_HZ / hz; |
| assert((src_clk_div - 1 <= 1023) && (src_clk_div * hz == OSC_HZ)); |
| |
| write32(&cru_ptr->clksel_con[27], RK_CLRSETBITS( |
| CLK_TSADC_DIV_CON_MASK << CLK_TSADC_DIV_CON_SHIFT | |
| CLK_TSADC_SEL_MASK << CLK_TSADC_SEL_SHIFT, |
| src_clk_div << CLK_TSADC_DIV_CON_SHIFT | |
| CLK_TSADC_SEL_X24M << CLK_TSADC_SEL_SHIFT)); |
| } |
| |
| void rkclk_configure_emmc(void) |
| { |
| int src_clk_div; |
| int aclk_emmc = 148500*KHz; |
| int clk_emmc = 148500*KHz; |
| |
| /* Select aclk_emmc source from GPLL */ |
| src_clk_div = GPLL_HZ / aclk_emmc; |
| assert((src_clk_div - 1 <= 31) && (src_clk_div * aclk_emmc == GPLL_HZ)); |
| |
| write32(&cru_ptr->clksel_con[21], |
| RK_CLRSETBITS(ACLK_EMMC_PLL_SEL_MASK << |
| ACLK_EMMC_PLL_SEL_SHIFT | |
| ACLK_EMMC_DIV_CON_MASK << ACLK_EMMC_DIV_CON_SHIFT, |
| ACLK_EMMC_PLL_SEL_GPLL << |
| ACLK_EMMC_PLL_SEL_SHIFT | |
| (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT)); |
| |
| /* Select clk_emmc source from GPLL too */ |
| src_clk_div = GPLL_HZ / clk_emmc; |
| assert((src_clk_div - 1 <= 127) && (src_clk_div * clk_emmc == GPLL_HZ)); |
| |
| write32(&cru_ptr->clksel_con[22], |
| RK_CLRSETBITS(CLK_EMMC_PLL_MASK << CLK_EMMC_PLL_SHIFT | |
| CLK_EMMC_DIV_CON_MASK << CLK_EMMC_DIV_CON_SHIFT, |
| CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT | |
| (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT)); |
| } |
| |
| int rkclk_was_watchdog_reset(void) |
| { |
| /* Bits 5 and 4 are "second" and "first" global watchdog reset. */ |
| return read32(&cru_ptr->glb_rst_st) & 0x30; |
| } |
| |
| void rkclk_configure_edp(unsigned int hz) |
| { |
| int src_clk_div; |
| |
| src_clk_div = CPLL_HZ / hz; |
| assert((src_clk_div - 1 <= 63) && (src_clk_div * hz == CPLL_HZ)); |
| |
| write32(&cru_ptr->clksel_con[44], |
| RK_CLRSETBITS(CLK_PCLK_EDP_PLL_SEL_MASK << |
| CLK_PCLK_EDP_PLL_SEL_SHIFT | |
| CLK_PCLK_EDP_DIV_CON_MASK << |
| CLK_PCLK_EDP_DIV_CON_SHIFT, |
| CLK_PCLK_EDP_PLL_SEL_CPLL << |
| CLK_PCLK_EDP_PLL_SEL_SHIFT | |
| (src_clk_div - 1) << |
| CLK_PCLK_EDP_DIV_CON_SHIFT)); |
| } |