--- /dev/null
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3399.h>
+#include <asm/arch/hardware.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rk3399-cru.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct rk3399_clk_priv {
+ struct rk3399_cru *cru;
+ ulong rate;
+};
+
+struct pll_div {
+ u32 refdiv;
+ u32 fbdiv;
+ u32 postdiv1;
+ u32 postdiv2;
+ u32 frac;
+};
+
+#define RATE_TO_DIV(input_rate, output_rate) \
+ ((input_rate) / (output_rate) - 1);
+#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
+ .refdiv = _refdiv,\
+ .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
+ .postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
+
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
+static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2, 2);
+static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1);
+
+static const struct pll_div apll_l_1600_cfg = PLL_DIVISORS(1600*MHz, 3, 1, 1);
+static const struct pll_div apll_l_600_cfg = PLL_DIVISORS(600*MHz, 1, 2, 1);
+
+static const struct pll_div *apll_l_cfgs[] = {
+ [APLL_L_1600_MHZ] = &apll_l_1600_cfg,
+ [APLL_L_600_MHZ] = &apll_l_600_cfg,
+};
+
+enum {
+ /* PLL_CON0 */
+ PLL_FBDIV_MASK = 0xfff,
+ PLL_FBDIV_SHIFT = 0,
+
+ /* PLL_CON1 */
+ PLL_POSTDIV2_SHIFT = 12,
+ PLL_POSTDIV2_MASK = 0x7 << PLL_POSTDIV2_SHIFT,
+ PLL_POSTDIV1_SHIFT = 8,
+ PLL_POSTDIV1_MASK = 0x7 << PLL_POSTDIV1_SHIFT,
+ PLL_REFDIV_MASK = 0x3f,
+ PLL_REFDIV_SHIFT = 0,
+
+ /* PLL_CON2 */
+ PLL_LOCK_STATUS_SHIFT = 31,
+ PLL_LOCK_STATUS_MASK = 1 << PLL_LOCK_STATUS_SHIFT,
+ PLL_FRACDIV_MASK = 0xffffff,
+ PLL_FRACDIV_SHIFT = 0,
+
+ /* PLL_CON3 */
+ PLL_MODE_SHIFT = 8,
+ PLL_MODE_MASK = 3 << PLL_MODE_SHIFT,
+ PLL_MODE_SLOW = 0,
+ PLL_MODE_NORM,
+ PLL_MODE_DEEP,
+ PLL_DSMPD_SHIFT = 3,
+ PLL_DSMPD_MASK = 1 << PLL_DSMPD_SHIFT,
+ 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_SHIFT = 7,
+ SPI3_PLL_SEL_MASK = 1 << SPI3_PLL_SEL_SHIFT,
+ SPI3_PLL_SEL_24M = 0,
+ SPI3_PLL_SEL_PPLL = 1,
+ SPI3_DIV_CON_SHIFT = 0x0,
+ SPI3_DIV_CON_MASK = 0x7f,
+
+ /* 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 */
+ ACLKM_CORE_L_DIV_CON_SHIFT = 8,
+ ACLKM_CORE_L_DIV_CON_MASK = 0x1f << ACLKM_CORE_L_DIV_CON_SHIFT,
+ CLK_CORE_L_PLL_SEL_SHIFT = 6,
+ CLK_CORE_L_PLL_SEL_MASK = 3 << CLK_CORE_L_PLL_SEL_SHIFT,
+ CLK_CORE_L_PLL_SEL_ALPLL = 0x0,
+ CLK_CORE_L_PLL_SEL_ABPLL = 0x1,
+ CLK_CORE_L_PLL_SEL_DPLL = 0x10,
+ CLK_CORE_L_PLL_SEL_GPLL = 0x11,
+ CLK_CORE_L_DIV_MASK = 0x1f,
+ CLK_CORE_L_DIV_SHIFT = 0,
+
+ /* CLKSEL_CON1 */
+ PCLK_DBG_L_DIV_SHIFT = 0x8,
+ PCLK_DBG_L_DIV_MASK = 0x1f << PCLK_DBG_L_DIV_SHIFT,
+ ATCLK_CORE_L_DIV_SHIFT = 0,
+ ATCLK_CORE_L_DIV_MASK = 0x1f << ATCLK_CORE_L_DIV_SHIFT,
+
+ /* CLKSEL_CON14 */
+ PCLK_PERIHP_DIV_CON_SHIFT = 12,
+ PCLK_PERIHP_DIV_CON_MASK = 0x7 << PCLK_PERIHP_DIV_CON_SHIFT,
+ HCLK_PERIHP_DIV_CON_SHIFT = 8,
+ HCLK_PERIHP_DIV_CON_MASK = 3 << HCLK_PERIHP_DIV_CON_SHIFT,
+ ACLK_PERIHP_PLL_SEL_SHIFT = 7,
+ ACLK_PERIHP_PLL_SEL_MASK = 1 << ACLK_PERIHP_PLL_SEL_SHIFT,
+ ACLK_PERIHP_PLL_SEL_CPLL = 0,
+ ACLK_PERIHP_PLL_SEL_GPLL = 1,
+ ACLK_PERIHP_DIV_CON_SHIFT = 0,
+ ACLK_PERIHP_DIV_CON_MASK = 0x1f,
+
+ /* CLKSEL_CON21 */
+ ACLK_EMMC_PLL_SEL_SHIFT = 7,
+ ACLK_EMMC_PLL_SEL_MASK = 0x1 << ACLK_EMMC_PLL_SEL_SHIFT,
+ ACLK_EMMC_PLL_SEL_GPLL = 0x1,
+ ACLK_EMMC_DIV_CON_SHIFT = 0,
+ ACLK_EMMC_DIV_CON_MASK = 0x1f,
+
+ /* CLKSEL_CON22 */
+ CLK_EMMC_PLL_SHIFT = 8,
+ CLK_EMMC_PLL_MASK = 0x7 << CLK_EMMC_PLL_SHIFT,
+ CLK_EMMC_PLL_SEL_GPLL = 0x1,
+ CLK_EMMC_DIV_CON_SHIFT = 0,
+ CLK_EMMC_DIV_CON_MASK = 0x7f << CLK_EMMC_DIV_CON_SHIFT,
+
+ /* CLKSEL_CON23 */
+ PCLK_PERILP0_DIV_CON_SHIFT = 12,
+ PCLK_PERILP0_DIV_CON_MASK = 0x7 << PCLK_PERILP0_DIV_CON_SHIFT,
+ HCLK_PERILP0_DIV_CON_SHIFT = 8,
+ HCLK_PERILP0_DIV_CON_MASK = 3 << HCLK_PERILP0_DIV_CON_SHIFT,
+ ACLK_PERILP0_PLL_SEL_SHIFT = 7,
+ ACLK_PERILP0_PLL_SEL_MASK = 1 << ACLK_PERILP0_PLL_SEL_SHIFT,
+ ACLK_PERILP0_PLL_SEL_CPLL = 0,
+ ACLK_PERILP0_PLL_SEL_GPLL = 1,
+ ACLK_PERILP0_DIV_CON_SHIFT = 0,
+ ACLK_PERILP0_DIV_CON_MASK = 0x1f,
+
+ /* CLKSEL_CON25 */
+ PCLK_PERILP1_DIV_CON_SHIFT = 8,
+ PCLK_PERILP1_DIV_CON_MASK = 0x7 << PCLK_PERILP1_DIV_CON_SHIFT,
+ HCLK_PERILP1_PLL_SEL_SHIFT = 7,
+ HCLK_PERILP1_PLL_SEL_MASK = 1 << HCLK_PERILP1_PLL_SEL_SHIFT,
+ HCLK_PERILP1_PLL_SEL_CPLL = 0,
+ HCLK_PERILP1_PLL_SEL_GPLL = 1,
+ HCLK_PERILP1_DIV_CON_SHIFT = 0,
+ HCLK_PERILP1_DIV_CON_MASK = 0x1f,
+
+ /* CLKSEL_CON26 */
+ CLK_SARADC_DIV_CON_SHIFT = 8,
+ CLK_SARADC_DIV_CON_MASK = 0xff << CLK_SARADC_DIV_CON_SHIFT,
+
+ /* CLKSEL_CON27 */
+ CLK_TSADC_SEL_X24M = 0x0,
+ CLK_TSADC_SEL_SHIFT = 15,
+ CLK_TSADC_SEL_MASK = 1 << CLK_TSADC_SEL_SHIFT,
+ CLK_TSADC_DIV_CON_SHIFT = 0,
+ CLK_TSADC_DIV_CON_MASK = 0x3ff,
+
+ /* CLKSEL_CON47 & CLKSEL_CON48 */
+ ACLK_VOP_PLL_SEL_SHIFT = 6,
+ ACLK_VOP_PLL_SEL_MASK = 0x3 << ACLK_VOP_PLL_SEL_SHIFT,
+ ACLK_VOP_PLL_SEL_CPLL = 0x1,
+ ACLK_VOP_DIV_CON_SHIFT = 0,
+ ACLK_VOP_DIV_CON_MASK = 0x1f << ACLK_VOP_DIV_CON_SHIFT,
+
+ /* CLKSEL_CON49 & CLKSEL_CON50 */
+ DCLK_VOP_DCLK_SEL_SHIFT = 11,
+ DCLK_VOP_DCLK_SEL_MASK = 1 << DCLK_VOP_DCLK_SEL_SHIFT,
+ DCLK_VOP_DCLK_SEL_DIVOUT = 0,
+ DCLK_VOP_PLL_SEL_SHIFT = 8,
+ DCLK_VOP_PLL_SEL_MASK = 3 << DCLK_VOP_PLL_SEL_SHIFT,
+ 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_SHIFT = 8,
+ RESETN_DDR0_REQ_MASK = 1 << RESETN_DDR0_REQ_SHIFT,
+ RESETN_DDRPHY0_REQ_SHIFT = 9,
+ RESETN_DDRPHY0_REQ_MASK = 1 << RESETN_DDRPHY0_REQ_SHIFT,
+ RESETN_DDR1_REQ_SHIFT = 12,
+ RESETN_DDR1_REQ_MASK = 1 << RESETN_DDR1_REQ_SHIFT,
+ RESETN_DDRPHY1_REQ_SHIFT = 13,
+ RESETN_DDRPHY1_REQ_MASK = 1 << RESETN_DDRPHY1_REQ_SHIFT,
+};
+
+#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 restructions 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;
+
+ 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.
+ */
+ rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
+ PLL_MODE_SLOW << PLL_MODE_SHIFT);
+
+ /* use integer mode */
+ rk_clrsetreg(&pll_con[3], PLL_DSMPD_MASK,
+ PLL_INTEGER_MODE << PLL_DSMPD_SHIFT);
+
+ rk_clrsetreg(&pll_con[0], PLL_FBDIV_MASK,
+ div->fbdiv << PLL_FBDIV_SHIFT);
+ rk_clrsetreg(&pll_con[1],
+ PLL_POSTDIV2_MASK | PLL_POSTDIV1_MASK |
+ 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 (!(readl(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT)))
+ udelay(1);
+
+ /* pll enter normal mode */
+ rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
+ 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) {
+ printf("%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) {
+ printf("%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)) {
+ printf("%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;
+}
+
+static void rkclk_init(struct rk3399_cru *cru)
+{
+ 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 three lines as a fix of bootrom bug.
+ */
+ rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101);
+ rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f);
+ rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003);
+
+ /* configure gpll cpll */
+ rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg);
+ rkclk_set_pll(&cru->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 < 0x4));
+
+ pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
+ assert((pclk_div + 1) * PERIHP_PCLK_HZ ==
+ PERIHP_ACLK_HZ && (pclk_div < 0x7));
+
+ rk_clrsetreg(&cru->clksel_con[14],
+ PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK |
+ ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
+ 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 < 0x4));
+
+ pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1;
+ assert((pclk_div + 1) * PERILP0_PCLK_HZ ==
+ PERILP0_ACLK_HZ && (pclk_div < 0x7));
+
+ rk_clrsetreg(&cru->clksel_con[23],
+ PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK |
+ ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK,
+ 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_HCLK_HZ - 1;
+ assert((pclk_div + 1) * PERILP1_HCLK_HZ ==
+ PERILP1_HCLK_HZ && (hclk_div < 0x7));
+
+ rk_clrsetreg(&cru->clksel_con[25],
+ PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK |
+ HCLK_PERILP1_PLL_SEL_MASK,
+ 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 rk3399_configure_cpu(struct rk3399_cru *cru,
+ enum apll_l_frequencies apll_l_freq)
+{
+ u32 aclkm_div;
+ u32 pclk_dbg_div;
+ u32 atclk_div;
+
+ rkclk_set_pll(&cru->apll_l_con[0], apll_l_cfgs[apll_l_freq]);
+
+ aclkm_div = APLL_HZ / ACLKM_CORE_HZ - 1;
+ assert((aclkm_div + 1) * ACLKM_CORE_HZ == APLL_HZ &&
+ aclkm_div < 0x1f);
+
+ pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ - 1;
+ assert((pclk_dbg_div + 1) * PCLK_DBG_HZ == APLL_HZ &&
+ pclk_dbg_div < 0x1f);
+
+ atclk_div = APLL_HZ / ATCLK_CORE_HZ - 1;
+ assert((atclk_div + 1) * ATCLK_CORE_HZ == APLL_HZ &&
+ atclk_div < 0x1f);
+
+ rk_clrsetreg(&cru->clksel_con[0],
+ ACLKM_CORE_L_DIV_CON_MASK | CLK_CORE_L_PLL_SEL_MASK |
+ CLK_CORE_L_DIV_MASK,
+ aclkm_div << ACLKM_CORE_L_DIV_CON_SHIFT |
+ CLK_CORE_L_PLL_SEL_ALPLL << CLK_CORE_L_PLL_SEL_SHIFT |
+ 0 << CLK_CORE_L_DIV_SHIFT);
+
+ rk_clrsetreg(&cru->clksel_con[1],
+ PCLK_DBG_L_DIV_MASK | ATCLK_CORE_L_DIV_MASK,
+ pclk_dbg_div << PCLK_DBG_L_DIV_SHIFT |
+ atclk_div << ATCLK_CORE_L_DIV_SHIFT);
+}
+#define I2C_CLK_REG_MASK(bus) \
+ (I2C_DIV_CON_MASK << \
+ CLK_I2C ##bus## _DIV_CON_SHIFT | \
+ CLK_I2C_PLL_SEL_MASK << \
+ CLK_I2C ##bus## _PLL_SEL_SHIFT)
+
+#define I2C_CLK_REG_VALUE(bus, clk_div) \
+ ((clk_div - 1) << \
+ CLK_I2C ##bus## _DIV_CON_SHIFT | \
+ CLK_I2C_PLL_SEL_GPLL << \
+ CLK_I2C ##bus## _PLL_SEL_SHIFT)
+
+#define I2C_CLK_DIV_VALUE(con, bus) \
+ (con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & \
+ I2C_DIV_CON_MASK;
+
+static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id)
+{
+ u32 div, con;
+
+ switch (clk_id) {
+ case SCLK_I2C1:
+ con = readl(&cru->clksel_con[61]);
+ div = I2C_CLK_DIV_VALUE(con, 1);
+ break;
+ case SCLK_I2C2:
+ con = readl(&cru->clksel_con[62]);
+ div = I2C_CLK_DIV_VALUE(con, 2);
+ break;
+ case SCLK_I2C3:
+ con = readl(&cru->clksel_con[63]);
+ div = I2C_CLK_DIV_VALUE(con, 3);
+ break;
+ case SCLK_I2C5:
+ con = readl(&cru->clksel_con[61]);
+ div = I2C_CLK_DIV_VALUE(con, 5);
+ break;
+ case SCLK_I2C6:
+ con = readl(&cru->clksel_con[62]);
+ div = I2C_CLK_DIV_VALUE(con, 6);
+ break;
+ case SCLK_I2C7:
+ con = readl(&cru->clksel_con[63]);
+ div = I2C_CLK_DIV_VALUE(con, 7);
+ break;
+ default:
+ printf("do not support this i2c bus\n");
+ return -EINVAL;
+ }
+
+ return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
+{
+ int src_clk_div;
+
+ /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/
+ src_clk_div = GPLL_HZ / hz;
+ assert(src_clk_div - 1 < 127);
+
+ switch (clk_id) {
+ case SCLK_I2C1:
+ rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1),
+ I2C_CLK_REG_VALUE(1, src_clk_div));
+ break;
+ case SCLK_I2C2:
+ rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2),
+ I2C_CLK_REG_VALUE(2, src_clk_div));
+ break;
+ case SCLK_I2C3:
+ rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3),
+ I2C_CLK_REG_VALUE(3, src_clk_div));
+ break;
+ case SCLK_I2C5:
+ rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5),
+ I2C_CLK_REG_VALUE(5, src_clk_div));
+ break;
+ case SCLK_I2C6:
+ rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6),
+ I2C_CLK_REG_VALUE(6, src_clk_div));
+ break;
+ case SCLK_I2C7:
+ rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7),
+ I2C_CLK_REG_VALUE(7, src_clk_div));
+ break;
+ default:
+ printf("do not support this i2c bus\n");
+ return -EINVAL;
+ }
+
+ return DIV_TO_RATE(GPLL_HZ, src_clk_div);
+}
+
+static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz)
+{
+ struct pll_div vpll_config = {0};
+ int aclk_vop = 198*MHz;
+ void *aclkreg_addr, *dclkreg_addr;
+ u32 div;
+
+ switch (clk_id) {
+ case DCLK_VOP0:
+ aclkreg_addr = &cru->clksel_con[47];
+ dclkreg_addr = &cru->clksel_con[49];
+ break;
+ case DCLK_VOP1:
+ aclkreg_addr = &cru->clksel_con[48];
+ dclkreg_addr = &cru->clksel_con[50];
+ break;
+ default:
+ return -EINVAL;
+ }
+ /* vop aclk source clk: cpll */
+ div = CPLL_HZ / aclk_vop;
+ assert(div - 1 < 32);
+
+ rk_clrsetreg(aclkreg_addr,
+ ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK,
+ ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT |
+ (div - 1) << ACLK_VOP_DIV_CON_SHIFT);
+
+ /* vop dclk source from vpll, and equals to vpll(means div == 1) */
+ if (pll_para_config(hz, &vpll_config))
+ return -1;
+
+ rkclk_set_pll(&cru->vpll_con[0], &vpll_config);
+
+ rk_clrsetreg(dclkreg_addr,
+ DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK|
+ DCLK_VOP_DIV_CON_MASK,
+ 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 hz;
+}
+
+static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id)
+{
+ u32 div, con;
+
+ switch (clk_id) {
+ case SCLK_SDMMC:
+ con = readl(&cru->clksel_con[16]);
+ break;
+ case SCLK_EMMC:
+ con = readl(&cru->clksel_con[21]);
+ break;
+ default:
+ return -EINVAL;
+ }
+ div = (con>>CLK_EMMC_DIV_CON_SHIFT) & CLK_EMMC_DIV_CON_MASK;
+
+ return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru,
+ ulong clk_id, ulong set_rate)
+{
+ int src_clk_div;
+ int aclk_emmc = 198*MHz;
+
+ switch (clk_id) {
+ case SCLK_SDMMC:
+ /* Select clk_sdmmc source from GPLL too */
+ src_clk_div = GPLL_HZ / set_rate;
+ assert(src_clk_div - 1 < 127);
+
+ rk_clrsetreg(&cru->clksel_con[16],
+ CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
+ CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
+ (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
+ break;
+ case SCLK_EMMC:
+ /* Select aclk_emmc source from GPLL */
+ src_clk_div = GPLL_HZ / aclk_emmc;
+ assert(src_clk_div - 1 < 31);
+
+ rk_clrsetreg(&cru->clksel_con[21],
+ ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK,
+ 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 / set_rate;
+ assert(src_clk_div - 1 < 127);
+
+ rk_clrsetreg(&cru->clksel_con[22],
+ CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
+ CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
+ (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return rk3399_mmc_get_clk(cru, clk_id);
+}
+
+static ulong rk3399_clk_get_rate(struct clk *clk)
+{
+ struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
+ ulong rate = 0;
+
+ switch (clk->id) {
+ case 0 ... 63:
+ return 0;
+ case SCLK_SDMMC:
+ case SCLK_EMMC:
+ rate = rk3399_mmc_get_clk(priv->cru, clk->id);
+ break;
+ case SCLK_I2C1:
+ case SCLK_I2C2:
+ case SCLK_I2C3:
+ case SCLK_I2C5:
+ case SCLK_I2C6:
+ case SCLK_I2C7:
+ rate = rk3399_i2c_get_clk(priv->cru, clk->id);
+ break;
+ case DCLK_VOP0:
+ case DCLK_VOP1:
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ return rate;
+}
+
+static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
+ ulong ret = 0;
+
+ switch (clk->id) {
+ case 0 ... 63:
+ return 0;
+ case SCLK_SDMMC:
+ case SCLK_EMMC:
+ ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate);
+ break;
+ case SCLK_I2C1:
+ case SCLK_I2C2:
+ case SCLK_I2C3:
+ case SCLK_I2C5:
+ case SCLK_I2C6:
+ case SCLK_I2C7:
+ ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate);
+ break;
+ case DCLK_VOP0:
+ case DCLK_VOP1:
+ rate = rk3399_vop_set_clk(priv->cru, clk->id, rate);
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ return ret;
+}
+
+static struct clk_ops rk3399_clk_ops = {
+ .get_rate = rk3399_clk_get_rate,
+ .set_rate = rk3399_clk_set_rate,
+};
+
+void *rockchip_get_cru(void)
+{
+ struct udevice *dev;
+ fdt_addr_t *addr;
+ int ret;
+
+ ret = uclass_get_device_by_name(UCLASS_CLK, "clk_rk3399", &dev);
+ if (ret)
+ return ERR_PTR(ret);
+
+ addr = dev_get_addr_ptr(dev);
+ if ((fdt_addr_t)addr == FDT_ADDR_T_NONE)
+ return ERR_PTR(-EINVAL);
+
+ return addr;
+}
+
+static int rk3399_clk_probe(struct udevice *dev)
+{
+ struct rk3399_clk_priv *priv = dev_get_priv(dev);
+
+ rkclk_init(priv->cru);
+
+ return 0;
+}
+
+static int rk3399_clk_ofdata_to_platdata(struct udevice *dev)
+{
+ struct rk3399_clk_priv *priv = dev_get_priv(dev);
+
+ priv->cru = (struct rk3399_cru *)dev_get_addr(dev);
+
+ return 0;
+}
+
+static int rk3399_clk_bind(struct udevice *dev)
+{
+ int ret;
+
+ /* The reset driver does not have a device node, so bind it here */
+ ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev);
+ if (ret)
+ printf("Warning: No RK3399 reset driver: ret=%d\n", ret);
+
+ return 0;
+}
+
+static const struct udevice_id rk3399_clk_ids[] = {
+ { .compatible = "rockchip,rk3399-cru" },
+ { }
+};
+
+U_BOOT_DRIVER(clk_rk3399) = {
+ .name = "clk_rk3399",
+ .id = UCLASS_CLK,
+ .of_match = rk3399_clk_ids,
+ .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv),
+ .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata,
+ .ops = &rk3399_clk_ops,
+ .bind = rk3399_clk_bind,
+ .probe = rk3399_clk_probe,
+};
projects / u-boot / commitdiff