diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-06-03 12:00:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-25 09:07:51 -0700 |
| commit | ef5e90e8ccb7b715c0a1509339f730b2bf9698a2 (patch) | |
| tree | 313a13c584951be317a1eeefa0cb842bbf99aeee /drivers/tty/serial/sh-sci.h | |
| parent | abbf121fb6dae6657388a32feac346e5e1debdbd (diff) | |
serial: sh-sci: Add more Serial Port Register documentation
Improve documentation for the (H)SCIF Serial Port Register:
- Make it clear the RTS and CTS lines are active-low,
- Document the bits related to the serial port's clock pin.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/sh-sci.h')
| -rw-r--r-- | drivers/tty/serial/sh-sci.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/tty/serial/sh-sci.h b/drivers/tty/serial/sh-sci.h index 7a4fa185b93e..85a2b81ba0a8 100644 --- a/drivers/tty/serial/sh-sci.h +++ b/drivers/tty/serial/sh-sci.h @@ -108,10 +108,12 @@ enum { #define SCLSR_ORER BIT(0) /* Overrun Error */ /* SCSPTR (Serial Port Register), optional */ -#define SCSPTR_RTSIO BIT(7) /* Serial Port RTS Pin Input/Output */ -#define SCSPTR_RTSDT BIT(6) /* Serial Port RTS Pin Data */ -#define SCSPTR_CTSIO BIT(5) /* Serial Port CTS Pin Input/Output */ -#define SCSPTR_CTSDT BIT(4) /* Serial Port CTS Pin Data */ +#define SCSPTR_RTSIO BIT(7) /* Serial Port RTS# Pin Input/Output */ +#define SCSPTR_RTSDT BIT(6) /* Serial Port RTS# Pin Data */ +#define SCSPTR_CTSIO BIT(5) /* Serial Port CTS# Pin Input/Output */ +#define SCSPTR_CTSDT BIT(4) /* Serial Port CTS# Pin Data */ +#define SCSPTR_SCKIO BIT(3) /* Serial Port Clock Pin Input/Output */ +#define SCSPTR_SCKDT BIT(2) /* Serial Port Clock Pin Data */ #define SCSPTR_SPB2IO BIT(1) /* Serial Port Break Input/Output */ #define SCSPTR_SPB2DT BIT(0) /* Serial Port Break Data */ |