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23d9cec07c
The DRA74/72 control module pins have a weak pull up and pull down.
This is configured by bit offset 17. if BIT(17) is 1, a pull up is
selected, else a pull down is selected.
However, this pull resisstor is applied based on BIT(16) -
PULLUDENABLE - if BIT(18) is *0*, then pull as defined in BIT(17) is
applied, else no weak pulls are applied. We defined this in reverse.
Reference: Table 18-5 (Description of the pad configuration register
bits) in Technical Reference Manual Revision (DRA74x revision Q:
SPRUHI2Q Revised June 2014 and DRA72x revision F: SPRUHP2F - Revised
June 2014)
Fixes: 6e58b8f1da ("ARM: dts: DRA7: Add the dts files for dra7 SoC and dra7-evm board")
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/*
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* This header provides constants for DRA pinctrl bindings.
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*
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* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
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* Author: Rajendra Nayak <rnayak@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _DT_BINDINGS_PINCTRL_DRA_H
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#define _DT_BINDINGS_PINCTRL_DRA_H
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/* DRA7 mux mode options for each pin. See TRM for options */
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#define MUX_MODE0 0x0
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#define MUX_MODE1 0x1
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#define MUX_MODE2 0x2
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#define MUX_MODE3 0x3
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#define MUX_MODE4 0x4
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#define MUX_MODE5 0x5
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#define MUX_MODE6 0x6
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#define MUX_MODE7 0x7
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#define MUX_MODE8 0x8
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#define MUX_MODE9 0x9
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#define MUX_MODE10 0xa
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#define MUX_MODE11 0xb
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#define MUX_MODE12 0xc
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#define MUX_MODE13 0xd
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#define MUX_MODE14 0xe
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#define MUX_MODE15 0xf
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#define PULL_ENA (0 << 16)
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#define PULL_DIS (1 << 16)
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#define PULL_UP (1 << 17)
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#define INPUT_EN (1 << 18)
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#define SLEWCONTROL (1 << 19)
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#define WAKEUP_EN (1 << 24)
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#define WAKEUP_EVENT (1 << 25)
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/* Active pin states */
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#define PIN_OUTPUT (0 | PULL_DIS)
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#define PIN_OUTPUT_PULLUP (PIN_OUTPUT | PULL_ENA | PULL_UP)
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#define PIN_OUTPUT_PULLDOWN (PIN_OUTPUT | PULL_ENA)
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#define PIN_INPUT (INPUT_EN | PULL_DIS)
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#define PIN_INPUT_SLEW (INPUT_EN | SLEWCONTROL)
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#define PIN_INPUT_PULLUP (PULL_ENA | INPUT_EN | PULL_UP)
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#define PIN_INPUT_PULLDOWN (PULL_ENA | INPUT_EN)
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#endif
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