10b2185514
According to AM437x TRM, Document SPRUHL7B, Revised December 2014, Section 7.2.1 Pad Control Registers, setting bit 19 of the pad control registers actually sets the SLEWCTRL value to slow rather than fast as the current macro indicates. Introduce a new macro, SLEWCTRL_SLOW, that sets the bit, and modify SLEWCTRL_FAST to 0 but keep it for completeness. Current users of the macro (i2c, mdio, and uart) are left unmodified as SLEWCTRL_FAST was the macro used and actual desired state. Tested on am437x-gp-evm with no difference in software performance seen. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
34 lines
761 B
C
34 lines
761 B
C
/*
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* This header provides constants specific to AM43XX pinctrl bindings.
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*/
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#ifndef _DT_BINDINGS_PINCTRL_AM43XX_H
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#define _DT_BINDINGS_PINCTRL_AM43XX_H
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#define MUX_MODE0 0
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#define MUX_MODE1 1
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#define MUX_MODE2 2
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#define MUX_MODE3 3
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#define MUX_MODE4 4
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#define MUX_MODE5 5
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#define MUX_MODE6 6
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#define MUX_MODE7 7
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#define MUX_MODE8 8
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#define PULL_DISABLE (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 SLEWCTRL_SLOW (1 << 19)
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#define SLEWCTRL_FAST 0
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#define DS0_PULL_UP_DOWN_EN (1 << 27)
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#define PIN_OUTPUT (PULL_DISABLE)
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#define PIN_OUTPUT_PULLUP (PULL_UP)
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#define PIN_OUTPUT_PULLDOWN 0
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#define PIN_INPUT (INPUT_EN | PULL_DISABLE)
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#define PIN_INPUT_PULLUP (INPUT_EN | PULL_UP)
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#define PIN_INPUT_PULLDOWN (INPUT_EN)
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#endif
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