#include <asm/arch-tegra/scu.h>
#include "cpu.h"
-enum tegra_family_t {
- TEGRA_FAMILY_T2x,
- TEGRA_FAMILY_T3x,
-};
-
-
-enum tegra_family_t get_family(void)
-{
- u32 reg, chip_id;
-
- reg = readl(NV_PA_APB_MISC_BASE + GP_HIDREV);
-
- chip_id = reg >> 8;
- chip_id &= 0xff;
- debug(" tegra_get_family: chip_id = %x\n", chip_id);
- if (chip_id == 0x30)
- return TEGRA_FAMILY_T3x;
- else
- return TEGRA_FAMILY_T2x;
-}
-
int get_num_cpus(void)
{
- return get_family() == TEGRA_FAMILY_T3x ? 4 : 2;
+ struct apb_misc_gp_ctlr *gp;
+ uint rev;
+
+ gp = (struct apb_misc_gp_ctlr *)NV_PA_APB_MISC_GP_BASE;
+ rev = (readl(&gp->hidrev) & HIDREV_CHIPID_MASK) >> HIDREV_CHIPID_SHIFT;
+
+ switch (rev) {
+ case CHIPID_TEGRA20:
+ return 2;
+ break;
+ case CHIPID_TEGRA30:
+ case CHIPID_TEGRA114:
+ default:
+ return 4;
+ break;
+ }
}
/*
*/
struct clk_pll_table tegra_pll_x_table[TEGRA_SOC_CNT][CLOCK_OSC_FREQ_COUNT] = {
/* T20: 1 GHz */
+ /* n, m, p, cpcon */
{{ 1000, 13, 0, 12}, /* OSC 13M */
{ 625, 12, 0, 8}, /* OSC 19.2M */
{ 1000, 12, 0, 12}, /* OSC 12M */
{ 700, 6, 0, 8},
{ 700, 13, 0, 8},
},
+
+ /* T114: 1.4 GHz */
+ {{ 862, 8, 0, 8},
+ { 583, 8, 0, 4},
+ { 696, 12, 0, 8},
+ { 700, 13, 0, 8},
+ },
};
void adjust_pllp_out_freqs(void)
sel = &tegra_pll_x_table[chip_type][osc];
pllx_set_rate(pll, sel->n, sel->m, sel->p, sel->cpcon);
- /* adjust PLLP_out1-4 on T30 */
- if (chip_type == TEGRA_SOC_T30) {
+ /* adjust PLLP_out1-4 on T30/T114 */
+ if (chip_type == TEGRA_SOC_T30 || chip_type == TEGRA_SOC_T114) {
debug(" init_pllx: adjusting PLLP out freqs\n");
adjust_pllp_out_freqs();
}
*/
clk = readl(&clkrst->crc_clk_cpu_cmplx);
clk |= 1 << CPU1_CLK_STP_SHIFT;
-#if defined(CONFIG_TEGRA30)
- clk |= 1 << CPU2_CLK_STP_SHIFT;
- clk |= 1 << CPU3_CLK_STP_SHIFT;
-#endif
+ if (get_num_cpus() == 4)
+ clk |= (1 << CPU2_CLK_STP_SHIFT) + (1 << CPU3_CLK_STP_SHIFT);
+
/* Stop/Unstop the CPU clock */
clk &= ~CPU0_CLK_STP_MASK;
clk |= !enable << CPU0_CLK_STP_SHIFT;
void clock_enable_coresight(int enable)
{
- u32 rst, src;
+ u32 rst, src = 2;
+ int chip;
debug("clock_enable_coresight entry\n");
clock_set_enable(PERIPH_ID_CORESIGHT, enable);
* Clock divider request for 204MHz would setup CSITE clock as
* 144MHz for PLLP base 216MHz and 204MHz for PLLP base 408MHz
*/
- if (tegra_get_chip_type() == TEGRA_SOC_T30)
+ chip = tegra_get_chip_type();
+ if (chip == TEGRA_SOC_T30 || chip == TEGRA_SOC_T114)
src = CLK_DIVIDER(NVBL_PLLP_KHZ, 204000);
- else
+ else if (chip == TEGRA_SOC_T20 || chip == TEGRA_SOC_T25)
src = CLK_DIVIDER(NVBL_PLLP_KHZ, 144000);
+ else
+ printf("%s: Unknown chip type %X!\n", __func__, chip);
clock_ll_set_source_divisor(PERIPH_ID_CSI, 0, src);
/* Unlock the CPU CoreSight interfaces */
rst = CORESIGHT_UNLOCK;
writel(rst, CSITE_CPU_DBG0_LAR);
writel(rst, CSITE_CPU_DBG1_LAR);
-#if defined(CONFIG_TEGRA30)
- writel(rst, CSITE_CPU_DBG2_LAR);
- writel(rst, CSITE_CPU_DBG3_LAR);
-#endif
+ if (get_num_cpus() == 4) {
+ writel(rst, CSITE_CPU_DBG2_LAR);
+ writel(rst, CSITE_CPU_DBG3_LAR);
+ }
}
}
--- /dev/null
+/*
+ * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/flow.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/pmc.h>
+#include "../tegra-common/cpu.h"
+
+/* Tegra114-specific CPU init code */
+static void enable_cpu_power_rail(void)
+{
+ struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+ struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ u32 reg;
+
+ debug("enable_cpu_power_rail entry\n");
+
+ /* un-tristate PWR_I2C SCL/SDA, rest of the defaults are correct */
+ pinmux_tristate_disable(PINGRP_PWR_I2C_SCL);
+ pinmux_tristate_disable(PINGRP_PWR_I2C_SDA);
+
+ /*
+ * Set CPUPWRGOOD_TIMER - APB clock is 1/2 of SCLK (102MHz),
+ * set it for 25ms (102MHz * .025)
+ */
+ reg = 0x26E8F0;
+ writel(reg, &pmc->pmc_cpupwrgood_timer);
+
+ /* Set polarity to 0 (normal) and enable CPUPWRREQ_OE */
+ clrbits_le32(&pmc->pmc_cntrl, CPUPWRREQ_POL);
+ setbits_le32(&pmc->pmc_cntrl, CPUPWRREQ_OE);
+
+ /*
+ * Set CLK_RST_CONTROLLER_CPU_SOFTRST_CTRL2_0_CAR2PMC_CPU_ACK_WIDTH
+ * to 408 to satisfy the requirement of having at least 16 CPU clock
+ * cycles before clamp removal.
+ */
+
+ clrbits_le32(&clkrst->crc_cpu_softrst_ctrl2, 0xFFF);
+ setbits_le32(&clkrst->crc_cpu_softrst_ctrl2, 408);
+}
+
+static void enable_cpu_clocks(void)
+{
+ struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ u32 reg;
+
+ debug("enable_cpu_clocks entry\n");
+
+ /* Wait for PLL-X to lock */
+ do {
+ reg = readl(&clkrst->crc_pll_simple[SIMPLE_PLLX].pll_base);
+ } while ((reg & (1 << 27)) == 0);
+
+ /* Wait until all clocks are stable */
+ udelay(PLL_STABILIZATION_DELAY);
+
+ writel(CCLK_BURST_POLICY, &clkrst->crc_cclk_brst_pol);
+ writel(SUPER_CCLK_DIVIDER, &clkrst->crc_super_cclk_div);
+
+ /* Always enable the main CPU complex clocks */
+ clock_enable(PERIPH_ID_CPU);
+ clock_enable(PERIPH_ID_CPULP);
+ clock_enable(PERIPH_ID_CPUG);
+}
+
+static void remove_cpu_resets(void)
+{
+ struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ u32 reg;
+
+ debug("remove_cpu_resets entry\n");
+ /* Take the slow non-CPU partition out of reset */
+ reg = readl(&clkrst->crc_rst_cpulp_cmplx_clr);
+ writel((reg | CLR_NONCPURESET), &clkrst->crc_rst_cpulp_cmplx_clr);
+
+ /* Take the fast non-CPU partition out of reset */
+ reg = readl(&clkrst->crc_rst_cpug_cmplx_clr);
+ writel((reg | CLR_NONCPURESET), &clkrst->crc_rst_cpug_cmplx_clr);
+
+ /* Clear the SW-controlled reset of the slow cluster */
+ reg = readl(&clkrst->crc_rst_cpulp_cmplx_clr);
+ reg |= (CLR_CPURESET0+CLR_DBGRESET0+CLR_CORERESET0+CLR_CXRESET0);
+ writel(reg, &clkrst->crc_rst_cpulp_cmplx_clr);
+
+ /* Clear the SW-controlled reset of the fast cluster */
+ reg = readl(&clkrst->crc_rst_cpug_cmplx_clr);
+ reg |= (CLR_CPURESET0+CLR_DBGRESET0+CLR_CORERESET0+CLR_CXRESET0);
+ reg |= (CLR_CPURESET1+CLR_DBGRESET1+CLR_CORERESET1+CLR_CXRESET1);
+ reg |= (CLR_CPURESET2+CLR_DBGRESET2+CLR_CORERESET2+CLR_CXRESET2);
+ reg |= (CLR_CPURESET3+CLR_DBGRESET3+CLR_CORERESET3+CLR_CXRESET3);
+ writel(reg, &clkrst->crc_rst_cpug_cmplx_clr);
+}
+
+/**
+ * The T114 requires some special clock initialization, including setting up
+ * the DVC I2C, turning on MSELECT and selecting the G CPU cluster
+ */
+void t114_init_clocks(void)
+{
+ struct clk_rst_ctlr *clkrst =
+ (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+ struct flow_ctlr *flow = (struct flow_ctlr *)NV_PA_FLOW_BASE;
+ u32 val;
+
+ debug("t114_init_clocks entry\n");
+
+ /* Set active CPU cluster to G */
+ clrbits_le32(&flow->cluster_control, 1);
+
+ /*
+ * Switch system clock to PLLP_OUT4 (108 MHz), AVP will now run
+ * at 108 MHz. This is glitch free as only the source is changed, no
+ * special precaution needed.
+ */
+ val = (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_FIQ_SOURCE_SHIFT) |
+ (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_IRQ_SOURCE_SHIFT) |
+ (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_RUN_SOURCE_SHIFT) |
+ (SCLK_SOURCE_PLLP_OUT4 << SCLK_SWAKEUP_IDLE_SOURCE_SHIFT) |
+ (SCLK_SYS_STATE_RUN << SCLK_SYS_STATE_SHIFT);
+ writel(val, &clkrst->crc_sclk_brst_pol);
+
+ writel(SUPER_SCLK_ENB_MASK, &clkrst->crc_super_sclk_div);
+
+ debug("Setting up PLLX\n");
+ init_pllx();
+
+ val = (1 << CLK_SYS_RATE_AHB_RATE_SHIFT);
+ writel(val, &clkrst->crc_clk_sys_rate);
+
+ /* Enable clocks to required peripherals. TBD - minimize this list */
+ debug("Enabling clocks\n");
+
+ clock_set_enable(PERIPH_ID_CACHE2, 1);
+ clock_set_enable(PERIPH_ID_GPIO, 1);
+ clock_set_enable(PERIPH_ID_TMR, 1);
+ clock_set_enable(PERIPH_ID_RTC, 1);
+ clock_set_enable(PERIPH_ID_CPU, 1);
+ clock_set_enable(PERIPH_ID_EMC, 1);
+ clock_set_enable(PERIPH_ID_I2C5, 1);
+ clock_set_enable(PERIPH_ID_FUSE, 1);
+ clock_set_enable(PERIPH_ID_PMC, 1);
+ clock_set_enable(PERIPH_ID_APBDMA, 1);
+ clock_set_enable(PERIPH_ID_MEM, 1);
+ clock_set_enable(PERIPH_ID_IRAMA, 1);
+ clock_set_enable(PERIPH_ID_IRAMB, 1);
+ clock_set_enable(PERIPH_ID_IRAMC, 1);
+ clock_set_enable(PERIPH_ID_IRAMD, 1);
+ clock_set_enable(PERIPH_ID_CORESIGHT, 1);
+ clock_set_enable(PERIPH_ID_MSELECT, 1);
+ clock_set_enable(PERIPH_ID_EMC1, 1);
+ clock_set_enable(PERIPH_ID_MC1, 1);
+ clock_set_enable(PERIPH_ID_DVFS, 1);
+
+ /* Switch MSELECT clock to PLLP (00) */
+ clock_ll_set_source(PERIPH_ID_MSELECT, 0);
+
+ /*
+ * Clock divider request for 102MHz would setup MSELECT clock as
+ * 102MHz for PLLP base 408MHz
+ */
+ clock_ll_set_source_divisor(PERIPH_ID_MSELECT, 0,
+ (NVBL_PLLP_KHZ/102000));
+
+ /* I2C5 (DVC) gets CLK_M and a divisor of 17 */
+ clock_ll_set_source_divisor(PERIPH_ID_I2C5, 3, 16);
+
+ /* Give clocks time to stabilize */
+ udelay(1000);
+
+ /* Take required peripherals out of reset */
+ debug("Taking periphs out of reset\n");
+ reset_set_enable(PERIPH_ID_CACHE2, 0);
+ reset_set_enable(PERIPH_ID_GPIO, 0);
+ reset_set_enable(PERIPH_ID_TMR, 0);
+ reset_set_enable(PERIPH_ID_COP, 0);
+ reset_set_enable(PERIPH_ID_EMC, 0);
+ reset_set_enable(PERIPH_ID_I2C5, 0);
+ reset_set_enable(PERIPH_ID_FUSE, 0);
+ reset_set_enable(PERIPH_ID_APBDMA, 0);
+ reset_set_enable(PERIPH_ID_MEM, 0);
+ reset_set_enable(PERIPH_ID_CORESIGHT, 0);
+ reset_set_enable(PERIPH_ID_MSELECT, 0);
+ reset_set_enable(PERIPH_ID_EMC1, 0);
+ reset_set_enable(PERIPH_ID_MC1, 0);
+
+ debug("t114_init_clocks exit\n");
+}
+
+static int is_partition_powered(u32 mask)
+{
+ struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+ u32 reg;
+
+ /* Get power gate status */
+ reg = readl(&pmc->pmc_pwrgate_status);
+ return (reg & mask) == mask;
+}
+
+static int is_clamp_enabled(u32 mask)
+{
+ struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+ u32 reg;
+
+ /* Get clamp status. TODO: Add pmc_clamp_status alias to pmc.h */
+ reg = readl(&pmc->pmc_pwrgate_timer_on);
+ return (reg & mask) == mask;
+}
+
+static void power_partition(u32 status, u32 partid)
+{
+ struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+
+ debug("%s: status = %08X, part ID = %08X\n", __func__, status, partid);
+ /* Is the partition already on? */
+ if (!is_partition_powered(status)) {
+ /* No, toggle the partition power state (OFF -> ON) */
+ debug("power_partition, toggling state\n");
+ clrbits_le32(&pmc->pmc_pwrgate_toggle, 0x1F);
+ setbits_le32(&pmc->pmc_pwrgate_toggle, partid);
+ setbits_le32(&pmc->pmc_pwrgate_toggle, START_CP);
+
+ /* Wait for the power to come up */
+ while (!is_partition_powered(status))
+ ;
+
+ /* Wait for the clamp status to be cleared */
+ while (is_clamp_enabled(status))
+ ;
+
+ /* Give I/O signals time to stabilize */
+ udelay(IO_STABILIZATION_DELAY);
+ }
+}
+
+void powerup_cpus(void)
+{
+ debug("powerup_cpus entry\n");
+
+ /* We boot to the fast cluster */
+ debug("powerup_cpus entry: G cluster\n");
+ /* Power up the fast cluster rail partition */
+ power_partition(CRAIL, CRAILID);
+
+ /* Power up the fast cluster non-CPU partition */
+ power_partition(C0NC, C0NCID);
+
+ /* Power up the fast cluster CPU0 partition */
+ power_partition(CE0, CE0ID);
+}
+
+void start_cpu(u32 reset_vector)
+{
+ debug("start_cpu entry, reset_vector = %x\n", reset_vector);
+
+ t114_init_clocks();
+
+ /* Enable VDD_CPU */
+ enable_cpu_power_rail();
+
+ /* Get the CPU(s) running */
+ enable_cpu_clocks();
+
+ /* Enable CoreSight */
+ clock_enable_coresight(1);
+
+ /* Take CPU(s) out of reset */
+ remove_cpu_resets();
+
+ /*
+ * Set the entry point for CPU execution from reset,
+ * if it's a non-zero value.
+ */
+ if (reset_vector)
+ writel(reset_vector, EXCEP_VECTOR_CPU_RESET_VECTOR);
+
+ /* If the CPU(s) don't already have power, power 'em up */
+ powerup_cpus();
+}
projects / oweals / u-boot.git / commitdiff