| commit | ba2cccd64e90f342673e3916dd1c0a8911813903 | |
| author | Joe Komlodi <komlodi@google.com> | |
| Mon, 13 Jun 2022 12:05:48 +0000 (13 14:05 +0200) | ||
| committer | Cédric Le Goater <clg@kaod.org> | |
| Wed, 22 Jun 2022 07:49:34 +0000 (22 09:49 +0200) | ||
| tree | 19e3ccb1babe06452827f911dcc2de0c750cf257 | treesnapshot (tar.gz zip) |
| parent | 2260fc6ff3ff384bf384118a9be7aa6bec43b45b | commitdiff |
aspeed: i2c: Add new mode support
On AST2600, I2C has a secondary mode, called "new mode", which changes
the layout of registers, adds some minor behavior changes, and
introduces a new way to transfer data called "packet mode".
Most of the bit positions of the fields are the same between old and new
mode, so we use SHARED_FIELD_XX macros to reuse most of the code between
the different modes.
For packet mode, most of the command behavior is the same compared to
other modes, but there are some minor changes to how interrupts are
handled compared to other modes.
Signed-off-by: Joe Komlodi <komlodi@google.com>
Change-Id: I072f8301964f623afc74af1fe50c12e5caef199e
Message-Id: <20220331043248.2237838-6-komlodi@google.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
On AST2600, I2C has a secondary mode, called "new mode", which changes
the layout of registers, adds some minor behavior changes, and
introduces a new way to transfer data called "packet mode".
Most of the bit positions of the fields are the same between old and new
mode, so we use SHARED_FIELD_XX macros to reuse most of the code between
the different modes.
For packet mode, most of the command behavior is the same compared to
other modes, but there are some minor changes to how interrupts are
handled compared to other modes.
Signed-off-by: Joe Komlodi <komlodi@google.com>
Change-Id: I072f8301964f623afc74af1fe50c12e5caef199e
Message-Id: <20220331043248.2237838-6-komlodi@google.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
| hw/i2c/aspeed_i2c.c | diffblobblamehistory | |
| include/hw/i2c/aspeed_i2c.h | diffblobblamehistory |