[PATCH v2 2/6] mailbox: dt-bindings: Add shared [driver <=> device tree] defines
From: jassisinghbrar@gmail.com (Jassi Brar)
Date: 2015-08-10 06:58:20
Also in:
linux-devicetree, lkml
On Mon, Jul 27, 2015 at 3:14 PM, Lee Jones [off-list ref] wrote:
quoted hunk ↗ jump to hunk
This header is currently only used for defines pertaining to data direction i.e. Rx, Tx or Loopback. Signed-off-by: Lee Jones <redacted> --- include/dt-bindings/mailbox/mailbox.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 include/dt-bindings/mailbox/mailbox.hdiff --git a/include/dt-bindings/mailbox/mailbox.h b/include/dt-bindings/mailbox/mailbox.h new file mode 100644 index 0000000..82e929a --- /dev/null +++ b/include/dt-bindings/mailbox/mailbox.h@@ -0,0 +1,14 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __MAILBOX_CONTROLLER_DT_BINDINGS_H +#define __MAILBOX_CONTROLLER_DT_BINDINGS_H + +#define MBOX_TX 0x1 +#define MBOX_RX 0x2 +#define MBOX_LOOPBACK (MBOX_RX | MBOX_TX) +
Not sure I understand 'loopback'. Does it mean h/w has some 'loopback' mode for testing purposes? Or it simply means the controller can send as well as receive messages? Thanks.