Moiz Sonasath a29aaf55cd
mfd: Disable TWL4030/5030 I2C1/I2C4 internal pull-ups ...
This patch disables TWL4030/5030 I2C1 adn I2C4(SR) internal pull-up, to
use only the external HW resistor >=470 Ohm for the assured
functionality in HS mode.
While testing the I2C in High Speed mode, it was discovered that
without a proper pull-up resistor, there is data corruption during
multi-byte transfer. RTC(time_set) test case was used for testing.
From the analysis done, it was concluded that ideally we need a
pull-up of 1.6k Ohm(recomended) or atleast 470 Ohm or greater for
assured performance in HS mode.
Signed-off-by: Moiz Sonasath <m-sonasath@ti.com >
Signed-off-by: Allen Pais <allen.pais@ti.com >
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com >
2010-03-07 22:17:23 +01:00
2009-12-12 13:08:15 +01:00
2010-03-07 12:52:38 -08:00
2010-03-01 13:04:58 -08:00
2010-01-07 01:13:57 -08:00
2010-02-26 20:39:11 +01:00
2010-03-01 09:00:29 -08:00
2010-02-27 14:05:38 +01:00
2010-02-26 13:58:08 +01:00
2010-03-04 07:49:37 -08:00
2010-03-06 11:26:28 -08:00
2010-02-02 15:58:48 -08:00
2010-01-13 10:55:16 -05:00
2010-03-06 11:26:28 -08:00
2010-02-26 16:50:02 -08:00
2009-12-06 11:18:28 +01:00
2010-03-06 11:26:23 -08:00
2010-03-03 09:25:37 -08:00
2010-03-06 11:26:32 -08:00
2010-03-03 08:08:44 -08:00
2010-03-06 11:26:25 -08:00
2010-03-07 22:17:13 +01:00
2010-03-07 09:54:44 -08:00
2010-03-02 14:54:23 -08:00
2010-03-06 11:33:09 -08:00
2010-03-06 11:26:23 -08:00
2010-03-04 08:24:06 -08:00
2009-12-17 11:43:25 +10:30
2010-02-26 13:58:08 +01:00
2010-03-06 11:26:23 -08:00
2010-03-07 22:17:20 +01:00
2010-02-28 19:23:06 -08:00
2010-03-07 22:17:05 +01:00
2010-01-04 12:33:33 -08:00
2010-03-01 10:38:09 -08:00
2010-03-06 02:32:35 +00:00
2010-03-03 08:48:58 -08:00
2010-02-26 13:58:08 +01:00
2010-03-02 07:55:08 -08:00
2010-03-07 22:17:23 +01:00
2010-03-06 11:26:32 -08:00
2010-03-06 11:26:43 -08:00
2010-03-06 11:30:18 -08:00
2010-03-06 11:26:23 -08:00
2010-02-14 07:13:55 -07:00
2009-12-14 09:58:24 -08:00
2009-12-16 03:48:56 +00:00
2010-03-02 14:43:08 -08:00
2010-03-06 11:26:36 -08:00
2010-03-03 08:37:41 +01:00
2010-03-03 07:41:24 -08:00
2009-12-16 12:33:19 -08:00
2010-03-07 22:17:17 +01:00
2010-02-09 13:56:23 +11:00
2010-03-07 22:17:08 +01:00
2010-03-07 22:17:16 +01:00
2010-03-02 07:55:08 -08:00
2010-01-28 14:38:25 -07:00
2010-03-01 09:00:29 -08:00
2010-03-02 14:43:24 -08:00
2010-02-17 12:37:42 +09:00
2009-12-15 08:53:27 -08:00
2010-03-01 14:19:05 -08:00
2010-02-19 15:52:51 -05:00
2010-03-05 13:20:53 -08:00
2009-12-07 18:36:35 +01:00
2009-12-16 14:22:32 -05:00
2009-12-15 08:53:25 -08:00
2010-03-07 12:51:52 -08:00
2009-12-04 15:39:55 +01:00
2010-02-28 19:50:33 +02:00
2010-03-07 22:17:08 +01:00
2010-02-28 20:39:11 +02:00
2010-02-15 09:27:02 -08:00
2010-03-01 14:19:05 -08:00
2010-03-06 11:26:46 -08:00
2009-12-06 11:18:28 +01:00
2010-03-06 11:26:28 -08:00
2010-01-15 01:43:29 -08:00
a29aaf55cd