+++ /dev/null
-/*
- * Copyright (c) 2010-2014, 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/tegra.h>
-#include <asm/arch-tegra/clk_rst.h>
-#include <asm/arch-tegra/pmc.h>
-#include <asm/arch-tegra/tegra_i2c.h>
-#include "../tegra-common/cpu.h"
-
-/* Tegra30-specific CPU init code */
-void tegra_i2c_ll_write_addr(uint addr, uint config)
-{
- struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
-
- writel(addr, ®->cmd_addr0);
- writel(config, ®->cnfg);
-}
-
-void tegra_i2c_ll_write_data(uint data, uint config)
-{
- struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
-
- writel(data, ®->cmd_data1);
- writel(config, ®->cnfg);
-}
-
-#define TPS62366A_I2C_ADDR 0xC0
-#define TPS62366A_SET1_REG 0x01
-#define TPS62366A_SET1_DATA (0x4600 | TPS62366A_SET1_REG)
-
-#define TPS62361B_I2C_ADDR 0xC0
-#define TPS62361B_SET3_REG 0x03
-#define TPS62361B_SET3_DATA (0x4600 | TPS62361B_SET3_REG)
-
-#define TPS65911_I2C_ADDR 0x5A
-#define TPS65911_VDDCTRL_OP_REG 0x28
-#define TPS65911_VDDCTRL_SR_REG 0x27
-#define TPS65911_VDDCTRL_OP_DATA (0x2400 | TPS65911_VDDCTRL_OP_REG)
-#define TPS65911_VDDCTRL_SR_DATA (0x0100 | TPS65911_VDDCTRL_SR_REG)
-#define I2C_SEND_2_BYTES 0x0A02
-
-static void enable_cpu_power_rail(void)
-{
- struct pmc_ctlr *pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
- u32 reg;
-
- debug("enable_cpu_power_rail entry\n");
- reg = readl(&pmc->pmc_cntrl);
- reg |= CPUPWRREQ_OE;
- writel(reg, &pmc->pmc_cntrl);
-
- /* Set VDD_CORE to 1.200V. */
-#ifdef CONFIG_TEGRA_VDD_CORE_TPS62366A_SET1
- tegra_i2c_ll_write_addr(TPS62366A_I2C_ADDR, 2);
- tegra_i2c_ll_write_data(TPS62366A_SET1_DATA, I2C_SEND_2_BYTES);
-#endif
-#ifdef CONFIG_TEGRA_VDD_CORE_TPS62361B_SET3
- tegra_i2c_ll_write_addr(TPS62361B_I2C_ADDR, 2);
- tegra_i2c_ll_write_data(TPS62361B_SET3_DATA, I2C_SEND_2_BYTES);
-#endif
- udelay(1000);
-
- /*
- * Bring up CPU VDD via the TPS65911x PMIC on the DVC I2C bus.
- * First set VDD to 1.0125V, then enable the VDD regulator.
- */
- tegra_i2c_ll_write_addr(TPS65911_I2C_ADDR, 2);
- tegra_i2c_ll_write_data(TPS65911_VDDCTRL_OP_DATA, I2C_SEND_2_BYTES);
- udelay(1000);
- tegra_i2c_ll_write_data(TPS65911_VDDCTRL_SR_DATA, I2C_SEND_2_BYTES);
- udelay(10 * 1000);
-}
-
-/**
- * The T30 requires some special clock initialization, including setting up
- * the dvc i2c, turning on mselect and selecting the G CPU cluster
- */
-void t30_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("t30_init_clocks entry\n");
- /* Set active CPU cluster to G */
- clrbits_le32(flow->cluster_control, 1 << 0);
-
- writel(SUPER_SCLK_ENB_MASK, &clkrst->crc_super_sclk_div);
-
- val = (0 << CLK_SYS_RATE_HCLK_DISABLE_SHIFT) |
- (1 << CLK_SYS_RATE_AHB_RATE_SHIFT) |
- (0 << CLK_SYS_RATE_PCLK_DISABLE_SHIFT) |
- (0 << CLK_SYS_RATE_APB_RATE_SHIFT);
- writel(val, &clkrst->crc_clk_sys_rate);
-
- /* Put i2c, mselect in reset and enable clocks */
- reset_set_enable(PERIPH_ID_DVC_I2C, 1);
- clock_set_enable(PERIPH_ID_DVC_I2C, 1);
- reset_set_enable(PERIPH_ID_MSELECT, 1);
- clock_set_enable(PERIPH_ID_MSELECT, 1);
-
- /* Switch MSELECT clock to PLLP (00) and use a divisor of 2 */
- clock_ll_set_source_divisor(PERIPH_ID_MSELECT, 0, 2);
-
- /*
- * Our high-level clock routines are not available prior to
- * relocation. We use the low-level functions which require a
- * hard-coded divisor. Use CLK_M with divide by (n + 1 = 17)
- */
- clock_ll_set_source_divisor(PERIPH_ID_DVC_I2C, 3, 16);
-
- /*
- * Give clocks time to stabilize, then take i2c and mselect out of
- * reset
- */
- udelay(1000);
- reset_set_enable(PERIPH_ID_DVC_I2C, 0);
- reset_set_enable(PERIPH_ID_MSELECT, 0);
-}
-
-static void set_cpu_running(int run)
-{
- struct flow_ctlr *flow = (struct flow_ctlr *)NV_PA_FLOW_BASE;
-
- debug("set_cpu_running entry, run = %d\n", run);
- writel(run ? FLOW_MODE_NONE : FLOW_MODE_STOP, &flow->halt_cpu_events);
-}
-
-void start_cpu(u32 reset_vector)
-{
- debug("start_cpu entry, reset_vector = %x\n", reset_vector);
- t30_init_clocks();
-
- /* Enable VDD_CPU */
- enable_cpu_power_rail();
-
- set_cpu_running(0);
-
- /* Hold the CPUs in reset */
- reset_A9_cpu(1);
-
- /* Disable the CPU clock */
- enable_cpu_clock(0);
-
- /* Enable CoreSight */
- clock_enable_coresight(1);
-
- /*
- * 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);
-
- /* Enable the CPU clock */
- enable_cpu_clock(1);
-
- /* If the CPU doesn't already have power, power it up */
- powerup_cpu();
-
- /* Take the CPU out of reset */
- reset_A9_cpu(0);
-
- set_cpu_running(1);
-}
projects / karo-tx-uboot.git / blobdiff