mirror of
https://github.com/brain-hackers/u-boot-brain
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a3c252d6d6
Introudce a new function lcdif_power_down. 1. Waits for a VSYNC interrupt to guarantee the reset is done at the VSYNC edge, which somehow makes the LCDIF consume the display FIFO(?) and helps the LCDIF work normally at the kernel stage. 2. Add power down function to stop lcdif. The reason to introduce lcdif_power_down is that we want lcdif to be in initial state when doing uboot reset or before kernel boot to make system stable, otherwise system may hang. Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Anatolij Gustschin <agust@denx.de> Acked-by: Anatolij Gustschin <agust@denx.de>
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
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* (C) Copyright 2009
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* Stefano Babic, DENX Software Engineering, sbabic@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SYS_PROTO_H_
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#define _SYS_PROTO_H_
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#include <asm/imx-common/regs-common.h>
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#include <common.h>
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#include "../arch-imx/cpu.h"
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#define soc_rev() (get_cpu_rev() & 0xFF)
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#define is_soc_rev(rev) (soc_rev() == rev)
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/* returns MXC_CPU_ value */
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#define cpu_type(rev) (((rev) >> 12) & 0xff)
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#define soc_type(rev) (((rev) >> 12) & 0xf0)
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/* both macros return/take MXC_CPU_ constants */
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#define get_cpu_type() (cpu_type(get_cpu_rev()))
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#define get_soc_type() (soc_type(get_cpu_rev()))
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#define is_cpu_type(cpu) (get_cpu_type() == cpu)
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#define is_soc_type(soc) (get_soc_type() == soc)
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#define is_mx6dqp() (is_cpu_type(MXC_CPU_MX6QP) || is_cpu_type(MXC_CPU_MX6DP))
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u32 get_nr_cpus(void);
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u32 get_cpu_rev(void);
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u32 get_cpu_speed_grade_hz(void);
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u32 get_cpu_temp_grade(int *minc, int *maxc);
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const char *get_imx_type(u32 imxtype);
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u32 imx_ddr_size(void);
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void sdelay(unsigned long);
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void set_chipselect_size(int const);
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void init_aips(void);
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void init_src(void);
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void imx_set_wdog_powerdown(bool enable);
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/*
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* Initializes on-chip ethernet controllers.
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* to override, implement board_eth_init()
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*/
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int fecmxc_initialize(bd_t *bis);
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u32 get_ahb_clk(void);
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u32 get_periph_clk(void);
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void lcdif_power_down(void);
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int mxs_reset_block(struct mxs_register_32 *reg);
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int mxs_wait_mask_set(struct mxs_register_32 *reg, u32 mask, u32 timeout);
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int mxs_wait_mask_clr(struct mxs_register_32 *reg, u32 mask, u32 timeout);
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#endif
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