u-boot/arch/arm/include/asm/arch-omap4/sys_proto.h

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/*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _SYS_PROTO_H_
#define _SYS_PROTO_H_
#include <asm/arch/omap.h>
#include <asm/arch/clock.h>
#include <asm/io.h>
#include <asm/omap_common.h>
#include <linux/mtd/omap_gpmc.h>
#include <asm/arch/mux_omap4.h>
#include <asm/ti-common/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
extern const struct emif_regs emif_regs_elpida_200_mhz_2cs;
extern const struct emif_regs emif_regs_elpida_380_mhz_1cs;
extern const struct emif_regs emif_regs_elpida_400_mhz_1cs;
extern const struct emif_regs emif_regs_elpida_400_mhz_2cs;
extern const struct dmm_lisa_map_regs lisa_map_2G_x_1_x_2;
extern const struct dmm_lisa_map_regs lisa_map_2G_x_2_x_2;
extern const struct dmm_lisa_map_regs ma_lisa_map_2G_x_2_x_2;
struct omap_sysinfo {
char *board_string;
};
extern const struct omap_sysinfo sysinfo;
void gpmc_init(void);
void watchdog_init(void);
u32 get_device_type(void);
void do_set_mux(u32 base, struct pad_conf_entry const *array, int size);
void set_muxconf_regs_essential(void);
u32 wait_on_value(u32, u32, void *, u32);
void sdelay(unsigned long);
void set_pl310_ctrl_reg(u32 val);
void setup_clocks_for_console(void);
void prcm_init(void);
void bypass_dpll(u32 const base);
void freq_update_core(void);
u32 get_sys_clk_freq(void);
u32 omap4_ddr_clk(void);
void cancel_out(u32 *num, u32 *den, u32 den_limit);
void sdram_init(void);
u32 omap_sdram_size(void);
u32 cortex_rev(void);
void save_omap_boot_params(void);
void init_omap_revision(void);
void do_io_settings(void);
void sri2c_init(void);
void gpi2c_init(void);
int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
u32 warm_reset(void);
void force_emif_self_refresh(void);
ARM: OMAP5: Fix warm reset with USB cable connected Warm reset on OMAP5 freezes when USB cable is connected. Fix requires PRM_RSTTIME.RSTTIME1 to be programmed with the time for which reset should be held low for the voltages and the oscillator to reach stable state. There are 3 parameters to be considered for calculating the time, which are mostly board and PMIC dependent. -1- Time taken by the Oscillator to shut + restart -2- PMIC OTP times -3- Voltage rail ramp times, which inturn depends on the PMIC slew rate and value of the voltage ramp needed. In order to keep the code in u-boot simple, have a way for boards to specify a pre computed time directly using the 'CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC' option. If boards fail to specify the time, use a default as specified by 'CONFIG_DEFAULT_OMAP_RESET_TIME_MAX_USEC' instead. Using the default value translates into some ~22ms and should work in all cases. However in order to avoid this large delay hiding other bugs, its recommended that all boards look at their respective data sheets and specify a pre computed and optimal value using 'CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC' In order to help future board additions to compute this config option value, add a README at doc/README.omap-reset-time which explains how to compute the value. Also update the toplevel README with the additional option and pointers to doc/README.omap-reset-time. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> [rnayak@ti.com: Updated changelog and added the README] Signed-off-by: Rajendra Nayak <rnayak@ti.com>
2013-04-17 20:49:40 +00:00
void setup_warmreset_time(void);
#endif