diff options
| author | Vitor Soares <Vitor.Soares@synopsys.com> | 2019-06-19 20:36:32 +0200 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@collabora.com> | 2019-06-20 09:23:22 +0200 |
| commit | cbf4f7325a638ced1d815580dfed44ea3b76163c (patch) | |
| tree | 14967988fe09d6e065c323afe1f47b6f9f87048c /include/linux/i3c | |
| parent | ecc8fb54bd443bf69996d9d5ddb8d90a50f14936 (diff) | |
i3c: add mixed limited bus mode
The i3c bus spec defines a bus configuration where i2c devices don't
have a 50ns filter but support SCL running at SDR max rate (12.5MHz).
This patch introduces the limited bus mode so that users can use
a higher speed in presence of i2c devices index 1.
Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
Cc: Boris Brezillon <bbrezillon@kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Diffstat (limited to 'include/linux/i3c')
| -rw-r--r-- | include/linux/i3c/master.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h index eca8337bdaa5..1f08fa8d69d2 100644 --- a/include/linux/i3c/master.h +++ b/include/linux/i3c/master.h @@ -250,12 +250,17 @@ struct i3c_device { * the bus. The only impact in this mode is that the * high SCL pulse has to stay below 50ns to trick I2C * devices when transmitting I3C frames + * @I3C_BUS_MODE_MIXED_LIMITED: I2C devices without 50ns spike filter are + * present on the bus. However they allow + * compliance up to the maximum SDR SCL clock + * frequency. * @I3C_BUS_MODE_MIXED_SLOW: I2C devices without 50ns spike filter are present * on the bus */ enum i3c_bus_mode { I3C_BUS_MODE_PURE, I3C_BUS_MODE_MIXED_FAST, + I3C_BUS_MODE_MIXED_LIMITED, I3C_BUS_MODE_MIXED_SLOW, }; |