@@ -10,7 +10,6 @@ obj-y += clock_manager.o
obj-y += misc.o
ifdef CONFIG_TARGET_SOCFPGA_GEN5
-obj-y += clock_manager_gen5.o
obj-y += misc_gen5.o
obj-y += reset_manager_gen5.o
obj-y += scan_manager.o
@@ -10,6 +10,8 @@
DECLARE_GLOBAL_DATA_PTR;
+#ifndef CONFIG_TARGET_SOCFPGA_GEN5
+
static const struct socfpga_clock_manager *clock_manager_base =
(struct socfpga_clock_manager *)SOCFPGA_CLKMGR_ADDRESS;
@@ -18,11 +20,7 @@ void cm_wait_for_lock(u32 mask)
u32 inter_val;
u32 retry = 0;
do {
-#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
- inter_val = readl(&clock_manager_base->inter) & mask;
-#else
inter_val = readl(&clock_manager_base->stat) & mask;
-#endif
/* Wait for stable lock */
if (inter_val == mask)
retry++;
@@ -40,14 +38,29 @@ int cm_wait_for_fsm(void)
CLKMGR_STAT_BUSY, false, 20000, false);
}
-int set_cpu_clk_info(void)
+#endif
+
+#ifdef CONFIG_TARGET_SOCFPGA_GEN5
+static unsigned long cm_get_mpu_clk_hz(void)
{
-#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
- /* Calculate the clock frequencies required for drivers */
- cm_get_l4_sp_clk_hz();
- cm_get_mmc_controller_clk_hz();
+ return 0; // TODO: use devicetree
+}
+
+static unsigned long cm_get_sdram_clk_hz(void)
+{
+ return 0; // TODO: use devicetree
+}
+
+#ifndef CONFIG_SPL_BUILD
+static void cm_print_clock_quick_summary(void)
+{
+ // TODO: use devicetree
+}
+#endif
#endif
+int set_cpu_clk_info(void)
+{
gd->bd->bi_arm_freq = cm_get_mpu_clk_hz() / 1000000;
gd->bd->bi_dsp_freq = 0;
deleted file mode 100644
@@ -1,528 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2013-2017 Altera Corporation <www.altera.com>
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <dm.h>
-#include <asm/arch/clock_manager.h>
-#include <wait_bit.h>
-
-static const struct socfpga_clock_manager *clock_manager_base =
- (struct socfpga_clock_manager *)SOCFPGA_CLKMGR_ADDRESS;
-
-/*
- * function to write the bypass register which requires a poll of the
- * busy bit
- */
-static void cm_write_bypass(u32 val)
-{
- writel(val, &clock_manager_base->bypass);
- cm_wait_for_fsm();
-}
-
-/* function to write the ctrl register which requires a poll of the busy bit */
-static void cm_write_ctrl(u32 val)
-{
- writel(val, &clock_manager_base->ctrl);
- cm_wait_for_fsm();
-}
-
-/* function to write a clock register that has phase information */
-static int cm_write_with_phase(u32 value, const void *reg_address, u32 mask)
-{
- int ret;
-
- /* poll until phase is zero */
- ret = wait_for_bit_le32(reg_address, mask, false, 20000, false);
- if (ret)
- return ret;
-
- writel(value, reg_address);
-
- return wait_for_bit_le32(reg_address, mask, false, 20000, false);
-}
-
-/*
- * Setup clocks while making no assumptions about previous state of the clocks.
- *
- * Start by being paranoid and gate all sw managed clocks
- * Put all plls in bypass
- * Put all plls VCO registers back to reset value (bandgap power down).
- * Put peripheral and main pll src to reset value to avoid glitch.
- * Delay 5 us.
- * Deassert bandgap power down and set numerator and denominator
- * Start 7 us timer.
- * set internal dividers
- * Wait for 7 us timer.
- * Enable plls
- * Set external dividers while plls are locking
- * Wait for pll lock
- * Assert/deassert outreset all.
- * Take all pll's out of bypass
- * Clear safe mode
- * set source main and peripheral clocks
- * Ungate clocks
- */
-
-int cm_basic_init(const struct cm_config * const cfg)
-{
- unsigned long end;
- int ret;
-
- /* Start by being paranoid and gate all sw managed clocks */
-
- /*
- * We need to disable nandclk
- * and then do another apb access before disabling
- * gatting off the rest of the periperal clocks.
- */
- writel(~CLKMGR_PERPLLGRP_EN_NANDCLK_MASK &
- readl(&clock_manager_base->per_pll.en),
- &clock_manager_base->per_pll.en);
-
- /* DO NOT GATE OFF DEBUG CLOCKS & BRIDGE CLOCKS */
- writel(CLKMGR_MAINPLLGRP_EN_DBGTIMERCLK_MASK |
- CLKMGR_MAINPLLGRP_EN_DBGTRACECLK_MASK |
- CLKMGR_MAINPLLGRP_EN_DBGCLK_MASK |
- CLKMGR_MAINPLLGRP_EN_DBGATCLK_MASK |
- CLKMGR_MAINPLLGRP_EN_S2FUSER0CLK_MASK |
- CLKMGR_MAINPLLGRP_EN_L4MPCLK_MASK,
- &clock_manager_base->main_pll.en);
-
- writel(0, &clock_manager_base->sdr_pll.en);
-
- /* now we can gate off the rest of the peripheral clocks */
- writel(0, &clock_manager_base->per_pll.en);
-
- /* Put all plls in bypass */
- cm_write_bypass(CLKMGR_BYPASS_PERPLL | CLKMGR_BYPASS_SDRPLL |
- CLKMGR_BYPASS_MAINPLL);
-
- /* Put all plls VCO registers back to reset value. */
- writel(CLKMGR_MAINPLLGRP_VCO_RESET_VALUE &
- ~CLKMGR_MAINPLLGRP_VCO_REGEXTSEL_MASK,
- &clock_manager_base->main_pll.vco);
- writel(CLKMGR_PERPLLGRP_VCO_RESET_VALUE &
- ~CLKMGR_PERPLLGRP_VCO_REGEXTSEL_MASK,
- &clock_manager_base->per_pll.vco);
- writel(CLKMGR_SDRPLLGRP_VCO_RESET_VALUE &
- ~CLKMGR_SDRPLLGRP_VCO_REGEXTSEL_MASK,
- &clock_manager_base->sdr_pll.vco);
-
- /*
- * The clocks to the flash devices and the L4_MAIN clocks can
- * glitch when coming out of safe mode if their source values
- * are different from their reset value. So the trick it to
- * put them back to their reset state, and change input
- * after exiting safe mode but before ungating the clocks.
- */
- writel(CLKMGR_PERPLLGRP_SRC_RESET_VALUE,
- &clock_manager_base->per_pll.src);
- writel(CLKMGR_MAINPLLGRP_L4SRC_RESET_VALUE,
- &clock_manager_base->main_pll.l4src);
-
- /* read back for the required 5 us delay. */
- readl(&clock_manager_base->main_pll.vco);
- readl(&clock_manager_base->per_pll.vco);
- readl(&clock_manager_base->sdr_pll.vco);
-
-
- /*
- * We made sure bgpwr down was assert for 5 us. Now deassert BG PWR DN
- * with numerator and denominator.
- */
- writel(cfg->main_vco_base, &clock_manager_base->main_pll.vco);
- writel(cfg->peri_vco_base, &clock_manager_base->per_pll.vco);
- writel(cfg->sdram_vco_base, &clock_manager_base->sdr_pll.vco);
-
- /*
- * Time starts here. Must wait 7 us from
- * BGPWRDN_SET(0) to VCO_ENABLE_SET(1).
- */
- end = timer_get_us() + 7;
-
- /* main mpu */
- writel(cfg->mpuclk, &clock_manager_base->main_pll.mpuclk);
-
- /* altera group mpuclk */
- writel(cfg->altera_grp_mpuclk, &clock_manager_base->altera.mpuclk);
-
- /* main main clock */
- writel(cfg->mainclk, &clock_manager_base->main_pll.mainclk);
-
- /* main for dbg */
- writel(cfg->dbgatclk, &clock_manager_base->main_pll.dbgatclk);
-
- /* main for cfgs2fuser0clk */
- writel(cfg->cfg2fuser0clk,
- &clock_manager_base->main_pll.cfgs2fuser0clk);
-
- /* Peri emac0 50 MHz default to RMII */
- writel(cfg->emac0clk, &clock_manager_base->per_pll.emac0clk);
-
- /* Peri emac1 50 MHz default to RMII */
- writel(cfg->emac1clk, &clock_manager_base->per_pll.emac1clk);
-
- /* Peri QSPI */
- writel(cfg->mainqspiclk, &clock_manager_base->main_pll.mainqspiclk);
-
- writel(cfg->perqspiclk, &clock_manager_base->per_pll.perqspiclk);
-
- /* Peri pernandsdmmcclk */
- writel(cfg->mainnandsdmmcclk,
- &clock_manager_base->main_pll.mainnandsdmmcclk);
-
- writel(cfg->pernandsdmmcclk,
- &clock_manager_base->per_pll.pernandsdmmcclk);
-
- /* Peri perbaseclk */
- writel(cfg->perbaseclk, &clock_manager_base->per_pll.perbaseclk);
-
- /* Peri s2fuser1clk */
- writel(cfg->s2fuser1clk, &clock_manager_base->per_pll.s2fuser1clk);
-
- /* 7 us must have elapsed before we can enable the VCO */
- while (timer_get_us() < end)
- ;
-
- /* Enable vco */
- /* main pll vco */
- writel(cfg->main_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
- &clock_manager_base->main_pll.vco);
-
- /* periferal pll */
- writel(cfg->peri_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
- &clock_manager_base->per_pll.vco);
-
- /* sdram pll vco */
- writel(cfg->sdram_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
- &clock_manager_base->sdr_pll.vco);
-
- /* L3 MP and L3 SP */
- writel(cfg->maindiv, &clock_manager_base->main_pll.maindiv);
-
- writel(cfg->dbgdiv, &clock_manager_base->main_pll.dbgdiv);
-
- writel(cfg->tracediv, &clock_manager_base->main_pll.tracediv);
-
- /* L4 MP, L4 SP, can0, and can1 */
- writel(cfg->perdiv, &clock_manager_base->per_pll.div);
-
- writel(cfg->gpiodiv, &clock_manager_base->per_pll.gpiodiv);
-
- cm_wait_for_lock(LOCKED_MASK);
-
- /* write the sdram clock counters before toggling outreset all */
- writel(cfg->ddrdqsclk & CLKMGR_SDRPLLGRP_DDRDQSCLK_CNT_MASK,
- &clock_manager_base->sdr_pll.ddrdqsclk);
-
- writel(cfg->ddr2xdqsclk & CLKMGR_SDRPLLGRP_DDR2XDQSCLK_CNT_MASK,
- &clock_manager_base->sdr_pll.ddr2xdqsclk);
-
- writel(cfg->ddrdqclk & CLKMGR_SDRPLLGRP_DDRDQCLK_CNT_MASK,
- &clock_manager_base->sdr_pll.ddrdqclk);
-
- writel(cfg->s2fuser2clk & CLKMGR_SDRPLLGRP_S2FUSER2CLK_CNT_MASK,
- &clock_manager_base->sdr_pll.s2fuser2clk);
-
- /*
- * after locking, but before taking out of bypass
- * assert/deassert outresetall
- */
- u32 mainvco = readl(&clock_manager_base->main_pll.vco);
-
- /* assert main outresetall */
- writel(mainvco | CLKMGR_MAINPLLGRP_VCO_OUTRESETALL_MASK,
- &clock_manager_base->main_pll.vco);
-
- u32 periphvco = readl(&clock_manager_base->per_pll.vco);
-
- /* assert pheriph outresetall */
- writel(periphvco | CLKMGR_PERPLLGRP_VCO_OUTRESETALL_MASK,
- &clock_manager_base->per_pll.vco);
-
- /* assert sdram outresetall */
- writel(cfg->sdram_vco_base | CLKMGR_MAINPLLGRP_VCO_EN|
- CLKMGR_SDRPLLGRP_VCO_OUTRESETALL,
- &clock_manager_base->sdr_pll.vco);
-
- /* deassert main outresetall */
- writel(mainvco & ~CLKMGR_MAINPLLGRP_VCO_OUTRESETALL_MASK,
- &clock_manager_base->main_pll.vco);
-
- /* deassert pheriph outresetall */
- writel(periphvco & ~CLKMGR_PERPLLGRP_VCO_OUTRESETALL_MASK,
- &clock_manager_base->per_pll.vco);
-
- /* deassert sdram outresetall */
- writel(cfg->sdram_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
- &clock_manager_base->sdr_pll.vco);
-
- /*
- * now that we've toggled outreset all, all the clocks
- * are aligned nicely; so we can change any phase.
- */
- ret = cm_write_with_phase(cfg->ddrdqsclk,
- &clock_manager_base->sdr_pll.ddrdqsclk,
- CLKMGR_SDRPLLGRP_DDRDQSCLK_PHASE_MASK);
- if (ret)
- return ret;
-
- /* SDRAM DDR2XDQSCLK */
- ret = cm_write_with_phase(cfg->ddr2xdqsclk,
- &clock_manager_base->sdr_pll.ddr2xdqsclk,
- CLKMGR_SDRPLLGRP_DDR2XDQSCLK_PHASE_MASK);
- if (ret)
- return ret;
-
- ret = cm_write_with_phase(cfg->ddrdqclk,
- &clock_manager_base->sdr_pll.ddrdqclk,
- CLKMGR_SDRPLLGRP_DDRDQCLK_PHASE_MASK);
- if (ret)
- return ret;
-
- ret = cm_write_with_phase(cfg->s2fuser2clk,
- &clock_manager_base->sdr_pll.s2fuser2clk,
- CLKMGR_SDRPLLGRP_S2FUSER2CLK_PHASE_MASK);
- if (ret)
- return ret;
-
- /* Take all three PLLs out of bypass when safe mode is cleared. */
- cm_write_bypass(0);
-
- /* clear safe mode */
- cm_write_ctrl(readl(&clock_manager_base->ctrl) | CLKMGR_CTRL_SAFEMODE);
-
- /*
- * now that safe mode is clear with clocks gated
- * it safe to change the source mux for the flashes the the L4_MAIN
- */
- writel(cfg->persrc, &clock_manager_base->per_pll.src);
- writel(cfg->l4src, &clock_manager_base->main_pll.l4src);
-
- /* Now ungate non-hw-managed clocks */
- writel(~0, &clock_manager_base->main_pll.en);
- writel(~0, &clock_manager_base->per_pll.en);
- writel(~0, &clock_manager_base->sdr_pll.en);
-
- /* Clear the loss of lock bits (write 1 to clear) */
- writel(CLKMGR_INTER_SDRPLLLOST_MASK | CLKMGR_INTER_PERPLLLOST_MASK |
- CLKMGR_INTER_MAINPLLLOST_MASK,
- &clock_manager_base->inter);
-
- return 0;
-}
-
-static unsigned int cm_get_main_vco_clk_hz(void)
-{
- u32 reg, clock;
-
- /* get the main VCO clock */
- reg = readl(&clock_manager_base->main_pll.vco);
- clock = cm_get_osc_clk_hz(1);
- clock /= ((reg & CLKMGR_MAINPLLGRP_VCO_DENOM_MASK) >>
- CLKMGR_MAINPLLGRP_VCO_DENOM_OFFSET) + 1;
- clock *= ((reg & CLKMGR_MAINPLLGRP_VCO_NUMER_MASK) >>
- CLKMGR_MAINPLLGRP_VCO_NUMER_OFFSET) + 1;
-
- return clock;
-}
-
-static unsigned int cm_get_per_vco_clk_hz(void)
-{
- u32 reg, clock = 0;
-
- /* identify PER PLL clock source */
- reg = readl(&clock_manager_base->per_pll.vco);
- reg = (reg & CLKMGR_PERPLLGRP_VCO_SSRC_MASK) >>
- CLKMGR_PERPLLGRP_VCO_SSRC_OFFSET;
- if (reg == CLKMGR_VCO_SSRC_EOSC1)
- clock = cm_get_osc_clk_hz(1);
- else if (reg == CLKMGR_VCO_SSRC_EOSC2)
- clock = cm_get_osc_clk_hz(2);
- else if (reg == CLKMGR_VCO_SSRC_F2S)
- clock = cm_get_f2s_per_ref_clk_hz();
-
- /* get the PER VCO clock */
- reg = readl(&clock_manager_base->per_pll.vco);
- clock /= ((reg & CLKMGR_PERPLLGRP_VCO_DENOM_MASK) >>
- CLKMGR_PERPLLGRP_VCO_DENOM_OFFSET) + 1;
- clock *= ((reg & CLKMGR_PERPLLGRP_VCO_NUMER_MASK) >>
- CLKMGR_PERPLLGRP_VCO_NUMER_OFFSET) + 1;
-
- return clock;
-}
-
-unsigned long cm_get_mpu_clk_hz(void)
-{
- u32 reg, clock;
-
- clock = cm_get_main_vco_clk_hz();
-
- /* get the MPU clock */
- reg = readl(&clock_manager_base->altera.mpuclk);
- clock /= (reg + 1);
- reg = readl(&clock_manager_base->main_pll.mpuclk);
- clock /= (reg + 1);
- return clock;
-}
-
-unsigned long cm_get_sdram_clk_hz(void)
-{
- u32 reg, clock = 0;
-
- /* identify SDRAM PLL clock source */
- reg = readl(&clock_manager_base->sdr_pll.vco);
- reg = (reg & CLKMGR_SDRPLLGRP_VCO_SSRC_MASK) >>
- CLKMGR_SDRPLLGRP_VCO_SSRC_OFFSET;
- if (reg == CLKMGR_VCO_SSRC_EOSC1)
- clock = cm_get_osc_clk_hz(1);
- else if (reg == CLKMGR_VCO_SSRC_EOSC2)
- clock = cm_get_osc_clk_hz(2);
- else if (reg == CLKMGR_VCO_SSRC_F2S)
- clock = cm_get_f2s_sdr_ref_clk_hz();
-
- /* get the SDRAM VCO clock */
- reg = readl(&clock_manager_base->sdr_pll.vco);
- clock /= ((reg & CLKMGR_SDRPLLGRP_VCO_DENOM_MASK) >>
- CLKMGR_SDRPLLGRP_VCO_DENOM_OFFSET) + 1;
- clock *= ((reg & CLKMGR_SDRPLLGRP_VCO_NUMER_MASK) >>
- CLKMGR_SDRPLLGRP_VCO_NUMER_OFFSET) + 1;
-
- /* get the SDRAM (DDR_DQS) clock */
- reg = readl(&clock_manager_base->sdr_pll.ddrdqsclk);
- reg = (reg & CLKMGR_SDRPLLGRP_DDRDQSCLK_CNT_MASK) >>
- CLKMGR_SDRPLLGRP_DDRDQSCLK_CNT_OFFSET;
- clock /= (reg + 1);
-
- return clock;
-}
-
-unsigned int cm_get_l4_sp_clk_hz(void)
-{
- u32 reg, clock = 0;
-
- /* identify the source of L4 SP clock */
- reg = readl(&clock_manager_base->main_pll.l4src);
- reg = (reg & CLKMGR_MAINPLLGRP_L4SRC_L4SP) >>
- CLKMGR_MAINPLLGRP_L4SRC_L4SP_OFFSET;
-
- if (reg == CLKMGR_L4_SP_CLK_SRC_MAINPLL) {
- clock = cm_get_main_vco_clk_hz();
-
- /* get the clock prior L4 SP divider (main clk) */
- reg = readl(&clock_manager_base->altera.mainclk);
- clock /= (reg + 1);
- reg = readl(&clock_manager_base->main_pll.mainclk);
- clock /= (reg + 1);
- } else if (reg == CLKMGR_L4_SP_CLK_SRC_PERPLL) {
- clock = cm_get_per_vco_clk_hz();
-
- /* get the clock prior L4 SP divider (periph_base_clk) */
- reg = readl(&clock_manager_base->per_pll.perbaseclk);
- clock /= (reg + 1);
- }
-
- /* get the L4 SP clock which supplied to UART */
- reg = readl(&clock_manager_base->main_pll.maindiv);
- reg = (reg & CLKMGR_MAINPLLGRP_MAINDIV_L4SPCLK_MASK) >>
- CLKMGR_MAINPLLGRP_MAINDIV_L4SPCLK_OFFSET;
- clock = clock / (1 << reg);
-
- return clock;
-}
-
-unsigned int cm_get_mmc_controller_clk_hz(void)
-{
- u32 reg, clock = 0;
-
- /* identify the source of MMC clock */
- reg = readl(&clock_manager_base->per_pll.src);
- reg = (reg & CLKMGR_PERPLLGRP_SRC_SDMMC_MASK) >>
- CLKMGR_PERPLLGRP_SRC_SDMMC_OFFSET;
-
- if (reg == CLKMGR_SDMMC_CLK_SRC_F2S) {
- clock = cm_get_f2s_per_ref_clk_hz();
- } else if (reg == CLKMGR_SDMMC_CLK_SRC_MAIN) {
- clock = cm_get_main_vco_clk_hz();
-
- /* get the SDMMC clock */
- reg = readl(&clock_manager_base->main_pll.mainnandsdmmcclk);
- clock /= (reg + 1);
- } else if (reg == CLKMGR_SDMMC_CLK_SRC_PER) {
- clock = cm_get_per_vco_clk_hz();
-
- /* get the SDMMC clock */
- reg = readl(&clock_manager_base->per_pll.pernandsdmmcclk);
- clock /= (reg + 1);
- }
-
- /* further divide by 4 as we have fixed divider at wrapper */
- clock /= 4;
- return clock;
-}
-
-unsigned int cm_get_qspi_controller_clk_hz(void)
-{
- u32 reg, clock = 0;
-
- /* identify the source of QSPI clock */
- reg = readl(&clock_manager_base->per_pll.src);
- reg = (reg & CLKMGR_PERPLLGRP_SRC_QSPI_MASK) >>
- CLKMGR_PERPLLGRP_SRC_QSPI_OFFSET;
-
- if (reg == CLKMGR_QSPI_CLK_SRC_F2S) {
- clock = cm_get_f2s_per_ref_clk_hz();
- } else if (reg == CLKMGR_QSPI_CLK_SRC_MAIN) {
- clock = cm_get_main_vco_clk_hz();
-
- /* get the qspi clock */
- reg = readl(&clock_manager_base->main_pll.mainqspiclk);
- clock /= (reg + 1);
- } else if (reg == CLKMGR_QSPI_CLK_SRC_PER) {
- clock = cm_get_per_vco_clk_hz();
-
- /* get the qspi clock */
- reg = readl(&clock_manager_base->per_pll.perqspiclk);
- clock /= (reg + 1);
- }
-
- return clock;
-}
-
-unsigned int cm_get_spi_controller_clk_hz(void)
-{
- u32 reg, clock = 0;
-
- clock = cm_get_per_vco_clk_hz();
-
- /* get the clock prior L4 SP divider (periph_base_clk) */
- reg = readl(&clock_manager_base->per_pll.perbaseclk);
- clock /= (reg + 1);
-
- return clock;
-}
-
-/* Override weak dw_spi_get_clk implementation in designware_spi.c driver */
-int dw_spi_get_clk(struct udevice *bus, ulong *rate)
-{
- *rate = cm_get_spi_controller_clk_hz();
-
- return 0;
-}
-
-void cm_print_clock_quick_summary(void)
-{
- printf("MPU %10ld kHz\n", cm_get_mpu_clk_hz() / 1000);
- printf("DDR %10ld kHz\n", cm_get_sdram_clk_hz() / 1000);
- printf("EOSC1 %8d kHz\n", cm_get_osc_clk_hz(1) / 1000);
- printf("EOSC2 %8d kHz\n", cm_get_osc_clk_hz(2) / 1000);
- printf("F2S_SDR_REF %8d kHz\n", cm_get_f2s_sdr_ref_clk_hz() / 1000);
- printf("F2S_PER_REF %8d kHz\n", cm_get_f2s_per_ref_clk_hz() / 1000);
- printf("MMC %8d kHz\n", cm_get_mmc_controller_clk_hz() / 1000);
- printf("QSPI %8d kHz\n", cm_get_qspi_controller_clk_hz() / 1000);
- printf("UART %8d kHz\n", cm_get_l4_sp_clk_hz() / 1000);
- printf("SPI %8d kHz\n", cm_get_spi_controller_clk_hz() / 1000);
-}
@@ -6,11 +6,13 @@
#ifndef _CLOCK_MANAGER_H_
#define _CLOCK_MANAGER_H_
+#ifndef CONFIG_TARGET_SOCFPGA_GEN5
#ifndef __ASSEMBLER__
void cm_wait_for_lock(u32 mask);
int cm_wait_for_fsm(void);
void cm_print_clock_quick_summary(void);
#endif
+#endif
#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
#include <asm/arch/clock_manager_gen5.h>
@@ -111,19 +111,7 @@ struct socfpga_clock_manager {
u32 _pad_0xe8_0x200[70];
};
-/* Clock speed accessors */
-unsigned long cm_get_mpu_clk_hz(void);
-unsigned long cm_get_sdram_clk_hz(void);
-unsigned int cm_get_l4_sp_clk_hz(void);
-unsigned int cm_get_mmc_controller_clk_hz(void);
-unsigned int cm_get_qspi_controller_clk_hz(void);
-unsigned int cm_get_spi_controller_clk_hz(void);
-const unsigned int cm_get_osc_clk_hz(const int osc);
-const unsigned int cm_get_f2s_per_ref_clk_hz(void);
-const unsigned int cm_get_f2s_sdr_ref_clk_hz(void);
-
/* Clock configuration accessors */
-int cm_basic_init(const struct cm_config * const cfg);
const struct cm_config * const cm_get_default_config(void);
#endif /* __ASSEMBLER__ */
@@ -62,7 +62,6 @@ u32 spl_boot_mode(const u32 boot_device)
void board_init_f(ulong dummy)
{
- const struct cm_config *cm_default_cfg = cm_get_default_config();
unsigned long reg;
int ret;
struct udevice *dev;
@@ -106,10 +105,9 @@ void board_init_f(ulong dummy)
socfpga_per_reset(SOCFPGA_RESET(OSC1TIMER0), 0);
timer_init();
- debug("Reconfigure Clock Manager\n");
- /* reconfigure the PLLs */
- if (cm_basic_init(cm_default_cfg))
- hang();
+ ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+ if (ret)
+ debug("Reset init failed: %d\n", ret);
/* Enable bootrom to configure IOs. */
sysmgr_config_warmrstcfgio(1);
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 Marek Vasut <marex@denx.de>
+ * Copyright (C) 2019 Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
*/
#include <common.h>
@@ -9,6 +10,7 @@
#include <dm.h>
#include <dm/lists.h>
#include <dm/util.h>
+#include <wait_bit.h>
#include <asm/arch/clock_manager.h>
@@ -41,6 +43,353 @@ struct socfpga_gen5_clk_platdata {
u8 src_off;
};
+#ifdef CONFIG_SPL_BUILD
+static void socfpga_gen5_clk_wait_for_lock(
+ const struct socfpga_clock_manager *clock_mgr, u32 mask)
+{
+ u32 inter_val;
+ u32 retry = 0;
+ do {
+#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
+ inter_val = readl(&clock_mgr->inter) & mask;
+#else
+ inter_val = readl(&clock_mgr->stat) & mask;
+#endif
+ /* Wait for stable lock */
+ if (inter_val == mask)
+ retry++;
+ else
+ retry = 0;
+ if (retry >= 10)
+ break;
+ } while (1);
+}
+
+/* function to poll in the fsm busy bit */
+static int socfpga_gen5_clk_wait_for_fsm(
+ const struct socfpga_clock_manager *clock_mgr)
+{
+ return wait_for_bit_le32(&clock_mgr->stat,
+ CLKMGR_STAT_BUSY, false, 20000, false);
+}
+/*
+ * function to write the bypass register which requires a poll of the
+ * busy bit
+ */
+static void socfpga_gen5_clk_write_bypass(
+ const struct socfpga_clock_manager *clock_mgr, u32 val)
+{
+ writel(val, &clock_mgr->bypass);
+ socfpga_gen5_clk_wait_for_fsm(clock_mgr);
+}
+
+/* function to write the ctrl register which requires a poll of the busy bit */
+static void socfpga_gen5_clk_write_ctrl(
+ const struct socfpga_clock_manager *clock_mgr, u32 val)
+{
+ writel(val, &clock_mgr->ctrl);
+ socfpga_gen5_clk_wait_for_fsm(clock_mgr);
+}
+
+/* function to write a clock register that has phase information */
+static int socfpga_gen5_clk_write_with_phase(
+ const struct socfpga_clock_manager *clock_mgr, u32 value,
+ const void *reg_address, u32 mask)
+{
+ int ret;
+
+ /* poll until phase is zero */
+ ret = wait_for_bit_le32(reg_address, mask, false, 20000, false);
+ if (ret)
+ return ret;
+
+ writel(value, reg_address);
+
+ return wait_for_bit_le32(reg_address, mask, false, 20000, false);
+}
+
+/*
+ * Setup clocks while making no assumptions about previous state of the clocks.
+ *
+ * Start by being paranoid and gate all sw managed clocks
+ * Put all plls in bypass
+ * Put all plls VCO registers back to reset value (bandgap power down).
+ * Put peripheral and main pll src to reset value to avoid glitch.
+ * Delay 5 us.
+ * Deassert bandgap power down and set numerator and denominator
+ * Start 7 us timer.
+ * set internal dividers
+ * Wait for 7 us timer.
+ * Enable plls
+ * Set external dividers while plls are locking
+ * Wait for pll lock
+ * Assert/deassert outreset all.
+ * Take all pll's out of bypass
+ * Clear safe mode
+ * set source main and peripheral clocks
+ * Ungate clocks
+ */
+static int socfpga_gen5_clk_init(struct udevice *dev)
+{
+ unsigned long end;
+ int ret;
+ struct socfpga_gen5_clk_platdata *plat = dev_get_platdata(dev);
+ const struct socfpga_clock_manager *clock_manager_base =
+ (const struct socfpga_clock_manager *)plat->regs;
+ const struct cm_config *cfg = cm_get_default_config();
+
+ /* Start by being paranoid and gate all sw managed clocks */
+
+ /*
+ * We need to disable nandclk
+ * and then do another apb access before disabling
+ * gatting off the rest of the periperal clocks.
+ */
+ writel(~CLKMGR_PERPLLGRP_EN_NANDCLK_MASK &
+ readl(&clock_manager_base->per_pll.en),
+ &clock_manager_base->per_pll.en);
+
+ /* DO NOT GATE OFF DEBUG CLOCKS & BRIDGE CLOCKS */
+ writel(CLKMGR_MAINPLLGRP_EN_DBGTIMERCLK_MASK |
+ CLKMGR_MAINPLLGRP_EN_DBGTRACECLK_MASK |
+ CLKMGR_MAINPLLGRP_EN_DBGCLK_MASK |
+ CLKMGR_MAINPLLGRP_EN_DBGATCLK_MASK |
+ CLKMGR_MAINPLLGRP_EN_S2FUSER0CLK_MASK |
+ CLKMGR_MAINPLLGRP_EN_L4MPCLK_MASK,
+ &clock_manager_base->main_pll.en);
+
+ writel(0, &clock_manager_base->sdr_pll.en);
+
+ /* now we can gate off the rest of the peripheral clocks */
+ writel(0, &clock_manager_base->per_pll.en);
+
+ /* Put all plls in bypass */
+ socfpga_gen5_clk_write_bypass(clock_manager_base,
+ CLKMGR_BYPASS_PERPLL |
+ CLKMGR_BYPASS_SDRPLL |
+ CLKMGR_BYPASS_MAINPLL);
+
+ /* Put all plls VCO registers back to reset value. */
+ writel(CLKMGR_MAINPLLGRP_VCO_RESET_VALUE &
+ ~CLKMGR_MAINPLLGRP_VCO_REGEXTSEL_MASK,
+ &clock_manager_base->main_pll.vco);
+ writel(CLKMGR_PERPLLGRP_VCO_RESET_VALUE &
+ ~CLKMGR_PERPLLGRP_VCO_REGEXTSEL_MASK,
+ &clock_manager_base->per_pll.vco);
+ writel(CLKMGR_SDRPLLGRP_VCO_RESET_VALUE &
+ ~CLKMGR_SDRPLLGRP_VCO_REGEXTSEL_MASK,
+ &clock_manager_base->sdr_pll.vco);
+
+ /*
+ * The clocks to the flash devices and the L4_MAIN clocks can
+ * glitch when coming out of safe mode if their source values
+ * are different from their reset value. So the trick it to
+ * put them back to their reset state, and change input
+ * after exiting safe mode but before ungating the clocks.
+ */
+ writel(CLKMGR_PERPLLGRP_SRC_RESET_VALUE,
+ &clock_manager_base->per_pll.src);
+ writel(CLKMGR_MAINPLLGRP_L4SRC_RESET_VALUE,
+ &clock_manager_base->main_pll.l4src);
+
+ /* read back for the required 5 us delay. */
+ readl(&clock_manager_base->main_pll.vco);
+ readl(&clock_manager_base->per_pll.vco);
+ readl(&clock_manager_base->sdr_pll.vco);
+
+
+ /*
+ * We made sure bgpwr down was assert for 5 us. Now deassert BG PWR DN
+ * with numerator and denominator.
+ */
+ writel(cfg->main_vco_base, &clock_manager_base->main_pll.vco);
+ writel(cfg->peri_vco_base, &clock_manager_base->per_pll.vco);
+ writel(cfg->sdram_vco_base, &clock_manager_base->sdr_pll.vco);
+
+ /*
+ * Time starts here. Must wait 7 us from
+ * BGPWRDN_SET(0) to VCO_ENABLE_SET(1).
+ */
+ end = timer_get_us() + 7;
+
+ /* main mpu */
+ writel(cfg->mpuclk, &clock_manager_base->main_pll.mpuclk);
+
+ /* altera group mpuclk */
+ writel(cfg->altera_grp_mpuclk, &clock_manager_base->altera.mpuclk);
+
+ /* main main clock */
+ writel(cfg->mainclk, &clock_manager_base->main_pll.mainclk);
+
+ /* main for dbg */
+ writel(cfg->dbgatclk, &clock_manager_base->main_pll.dbgatclk);
+
+ /* main for cfgs2fuser0clk */
+ writel(cfg->cfg2fuser0clk,
+ &clock_manager_base->main_pll.cfgs2fuser0clk);
+
+ /* Peri emac0 50 MHz default to RMII */
+ writel(cfg->emac0clk, &clock_manager_base->per_pll.emac0clk);
+
+ /* Peri emac1 50 MHz default to RMII */
+ writel(cfg->emac1clk, &clock_manager_base->per_pll.emac1clk);
+
+ /* Peri QSPI */
+ writel(cfg->mainqspiclk, &clock_manager_base->main_pll.mainqspiclk);
+
+ writel(cfg->perqspiclk, &clock_manager_base->per_pll.perqspiclk);
+
+ /* Peri pernandsdmmcclk */
+ writel(cfg->mainnandsdmmcclk,
+ &clock_manager_base->main_pll.mainnandsdmmcclk);
+
+ writel(cfg->pernandsdmmcclk,
+ &clock_manager_base->per_pll.pernandsdmmcclk);
+
+ /* Peri perbaseclk */
+ writel(cfg->perbaseclk, &clock_manager_base->per_pll.perbaseclk);
+
+ /* Peri s2fuser1clk */
+ writel(cfg->s2fuser1clk, &clock_manager_base->per_pll.s2fuser1clk);
+
+ /* 7 us must have elapsed before we can enable the VCO */
+ while (timer_get_us() < end)
+ ;
+
+ /* Enable vco */
+ /* main pll vco */
+ writel(cfg->main_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
+ &clock_manager_base->main_pll.vco);
+
+ /* periferal pll */
+ writel(cfg->peri_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
+ &clock_manager_base->per_pll.vco);
+
+ /* sdram pll vco */
+ writel(cfg->sdram_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
+ &clock_manager_base->sdr_pll.vco);
+
+ /* L3 MP and L3 SP */
+ writel(cfg->maindiv, &clock_manager_base->main_pll.maindiv);
+
+ writel(cfg->dbgdiv, &clock_manager_base->main_pll.dbgdiv);
+
+ writel(cfg->tracediv, &clock_manager_base->main_pll.tracediv);
+
+ /* L4 MP, L4 SP, can0, and can1 */
+ writel(cfg->perdiv, &clock_manager_base->per_pll.div);
+
+ writel(cfg->gpiodiv, &clock_manager_base->per_pll.gpiodiv);
+
+ socfpga_gen5_clk_wait_for_lock(clock_manager_base, LOCKED_MASK);
+
+ /* write the sdram clock counters before toggling outreset all */
+ writel(cfg->ddrdqsclk & CLKMGR_SDRPLLGRP_DDRDQSCLK_CNT_MASK,
+ &clock_manager_base->sdr_pll.ddrdqsclk);
+
+ writel(cfg->ddr2xdqsclk & CLKMGR_SDRPLLGRP_DDR2XDQSCLK_CNT_MASK,
+ &clock_manager_base->sdr_pll.ddr2xdqsclk);
+
+ writel(cfg->ddrdqclk & CLKMGR_SDRPLLGRP_DDRDQCLK_CNT_MASK,
+ &clock_manager_base->sdr_pll.ddrdqclk);
+
+ writel(cfg->s2fuser2clk & CLKMGR_SDRPLLGRP_S2FUSER2CLK_CNT_MASK,
+ &clock_manager_base->sdr_pll.s2fuser2clk);
+
+ /*
+ * after locking, but before taking out of bypass
+ * assert/deassert outresetall
+ */
+ u32 mainvco = readl(&clock_manager_base->main_pll.vco);
+
+ /* assert main outresetall */
+ writel(mainvco | CLKMGR_MAINPLLGRP_VCO_OUTRESETALL_MASK,
+ &clock_manager_base->main_pll.vco);
+
+ u32 periphvco = readl(&clock_manager_base->per_pll.vco);
+
+ /* assert pheriph outresetall */
+ writel(periphvco | CLKMGR_PERPLLGRP_VCO_OUTRESETALL_MASK,
+ &clock_manager_base->per_pll.vco);
+
+ /* assert sdram outresetall */
+ writel(cfg->sdram_vco_base | CLKMGR_MAINPLLGRP_VCO_EN|
+ CLKMGR_SDRPLLGRP_VCO_OUTRESETALL,
+ &clock_manager_base->sdr_pll.vco);
+
+ /* deassert main outresetall */
+ writel(mainvco & ~CLKMGR_MAINPLLGRP_VCO_OUTRESETALL_MASK,
+ &clock_manager_base->main_pll.vco);
+
+ /* deassert pheriph outresetall */
+ writel(periphvco & ~CLKMGR_PERPLLGRP_VCO_OUTRESETALL_MASK,
+ &clock_manager_base->per_pll.vco);
+
+ /* deassert sdram outresetall */
+ writel(cfg->sdram_vco_base | CLKMGR_MAINPLLGRP_VCO_EN,
+ &clock_manager_base->sdr_pll.vco);
+
+ /*
+ * now that we've toggled outreset all, all the clocks
+ * are aligned nicely; so we can change any phase.
+ */
+ ret = socfpga_gen5_clk_write_with_phase(
+ clock_manager_base, cfg->ddrdqsclk,
+ &clock_manager_base->sdr_pll.ddrdqsclk,
+ CLKMGR_SDRPLLGRP_DDRDQSCLK_PHASE_MASK);
+ if (ret)
+ return ret;
+
+ /* SDRAM DDR2XDQSCLK */
+ ret = socfpga_gen5_clk_write_with_phase(
+ clock_manager_base, cfg->ddr2xdqsclk,
+ &clock_manager_base->sdr_pll.ddr2xdqsclk,
+ CLKMGR_SDRPLLGRP_DDR2XDQSCLK_PHASE_MASK);
+ if (ret)
+ return ret;
+
+ ret = socfpga_gen5_clk_write_with_phase(
+ clock_manager_base, cfg->ddrdqclk,
+ &clock_manager_base->sdr_pll.ddrdqclk,
+ CLKMGR_SDRPLLGRP_DDRDQCLK_PHASE_MASK);
+ if (ret)
+ return ret;
+
+ ret = socfpga_gen5_clk_write_with_phase(
+ clock_manager_base, cfg->s2fuser2clk,
+ &clock_manager_base->sdr_pll.s2fuser2clk,
+ CLKMGR_SDRPLLGRP_S2FUSER2CLK_PHASE_MASK);
+ if (ret)
+ return ret;
+
+ /* Take all three PLLs out of bypass when safe mode is cleared. */
+ socfpga_gen5_clk_write_bypass(clock_manager_base, 0);
+
+ /* clear safe mode */
+ socfpga_gen5_clk_write_ctrl(clock_manager_base,
+ readl(&clock_manager_base->ctrl) |
+ CLKMGR_CTRL_SAFEMODE);
+
+ /*
+ * now that safe mode is clear with clocks gated
+ * it safe to change the source mux for the flashes the the L4_MAIN
+ */
+ writel(cfg->persrc, &clock_manager_base->per_pll.src);
+ writel(cfg->l4src, &clock_manager_base->main_pll.l4src);
+
+ /* Now ungate non-hw-managed clocks */
+ writel(~0, &clock_manager_base->main_pll.en);
+ writel(~0, &clock_manager_base->per_pll.en);
+ writel(~0, &clock_manager_base->sdr_pll.en);
+
+ /* Clear the loss of lock bits (write 1 to clear) */
+ writel(CLKMGR_INTER_SDRPLLLOST_MASK | CLKMGR_INTER_PERPLLLOST_MASK |
+ CLKMGR_INTER_MAINPLLLOST_MASK,
+ &clock_manager_base->inter);
+ return 0;
+}
+#endif
+
static int socfpga_gen5_clk_get_upstream(struct clk *clk, struct clk **upclk)
{
struct socfpga_gen5_clk_platdata *plat = dev_get_platdata(clk->dev);
@@ -246,6 +595,18 @@ static int socfpga_gen5_clk_probe(struct udevice *dev)
clk_get_bulk(dev, &plat->clks);
+#ifdef CONFIG_SPL_BUILD
+ /* clock tree init is done only one time, in SPL, before relocation */
+ if (!(gd->flags & GD_FLG_RELOC)) {
+ if (!fdt_node_check_compatible(fdt, offset, "altr,clk-mgr")) {
+ /* assign default clocks */
+ int ret = socfpga_gen5_clk_init(dev);
+ if (ret)
+ return ret;
+ }
+ }
+#endif
+
if (!fdt_node_check_compatible(fdt, offset,
"altr,socfpga-pll-clock")) {
/* Main PLL has 3 upstream clock */
This moves setting initial clock values (as defined by Quartus handoff files) from ad-hoc code in arch to CM_CLK driver. TODO: CONFIG_CLOCKS and cmd 'clocks' must be fixed for dts access. Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> --- Changes in v2: None arch/arm/mach-socfpga/Makefile | 1 - arch/arm/mach-socfpga/clock_manager.c | 31 +- arch/arm/mach-socfpga/clock_manager_gen5.c | 528 ------------------ .../mach-socfpga/include/mach/clock_manager.h | 2 + .../include/mach/clock_manager_gen5.h | 12 - arch/arm/mach-socfpga/spl_gen5.c | 8 +- drivers/clk/altera/clk-gen5.c | 361 ++++++++++++ 7 files changed, 388 insertions(+), 555 deletions(-) delete mode 100644 arch/arm/mach-socfpga/clock_manager_gen5.c