mirror of
https://github.com/AsahiLinux/u-boot
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4c54419737
Adding Freeze Controller driver. All HPS IOs need to be in freeze state during pin mux or IO buffer configuration. It is to avoid any glitch which might happen during the configuration from propagating to external devices. Signed-off-by: Chin Liang See <clsee@altera.com> Cc: Wolfgang Denk <wd@denx.de> CC: Pavel Machek <pavel@denx.de> Cc: Dinh Nguyen <dinguyen@altera.com> Cc: Tom Rini <trini@ti.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/*
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* Copyright (C) 2013 Altera Corporation <www.altera.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _FREEZE_CONTROLLER_H_
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#define _FREEZE_CONTROLLER_H_
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struct socfpga_freeze_controller {
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u32 vioctrl;
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u32 padding[3];
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u32 hioctrl;
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u32 src;
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u32 hwctrl;
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};
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#define FREEZE_CHANNEL_NUM (4)
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typedef enum {
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FREEZE_CTRL_FROZEN = 0,
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FREEZE_CTRL_THAWED = 1
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} FREEZE_CTRL_CHAN_STATE;
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#define SYSMGR_FRZCTRL_ADDRESS 0x40
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#define SYSMGR_FRZCTRL_SRC_VIO1_ENUM_SW 0x0
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#define SYSMGR_FRZCTRL_SRC_VIO1_ENUM_HW 0x1
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#define SYSMGR_FRZCTRL_VIOCTRL_SLEW_MASK 0x00000010
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#define SYSMGR_FRZCTRL_VIOCTRL_WKPULLUP_MASK 0x00000008
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#define SYSMGR_FRZCTRL_VIOCTRL_TRISTATE_MASK 0x00000004
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#define SYSMGR_FRZCTRL_VIOCTRL_BUSHOLD_MASK 0x00000002
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#define SYSMGR_FRZCTRL_VIOCTRL_CFG_MASK 0x00000001
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#define SYSMGR_FRZCTRL_HIOCTRL_SLEW_MASK 0x00000010
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#define SYSMGR_FRZCTRL_HIOCTRL_WKPULLUP_MASK 0x00000008
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#define SYSMGR_FRZCTRL_HIOCTRL_TRISTATE_MASK 0x00000004
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#define SYSMGR_FRZCTRL_HIOCTRL_BUSHOLD_MASK 0x00000002
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#define SYSMGR_FRZCTRL_HIOCTRL_CFG_MASK 0x00000001
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#define SYSMGR_FRZCTRL_HIOCTRL_REGRST_MASK 0x00000080
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#define SYSMGR_FRZCTRL_HIOCTRL_OCTRST_MASK 0x00000040
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#define SYSMGR_FRZCTRL_HIOCTRL_OCT_CFGEN_CALSTART_MASK 0x00000100
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#define SYSMGR_FRZCTRL_HIOCTRL_DLLRST_MASK 0x00000020
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#define SYSMGR_FRZCTRL_HWCTRL_VIO1REQ_MASK 0x00000001
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#define SYSMGR_FRZCTRL_HWCTRL_VIO1STATE_ENUM_FROZEN 0x2
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#define SYSMGR_FRZCTRL_HWCTRL_VIO1STATE_ENUM_THAWED 0x1
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#define SYSMGR_FRZCTRL_VIOCTRL_SHIFT 0x2
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void sys_mgr_frzctrl_freeze_req(void);
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void sys_mgr_frzctrl_thaw_req(void);
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#endif /* _FREEZE_CONTROLLER_H_ */
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