From 118fa0ff5a6361066b213522798697ab399c1e84 Mon Sep 17 00:00:00 2001 From: "Brian J. Nemec" Date: Mon, 22 Feb 2021 14:21:13 -0800 Subject: servo_v4p1: Enable 5A and 20V charging MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Enables 5A and 20V charging on all Servo_v4p1's. There is a small population of servo_v4p1 devices with 3A cables but these represent about 100 total units between the early builds. The setting was not set as a board id configuration as stress tests show this process will still be safe and the Servo_v4p1's that are current limited are easy to keep within the 3A current limits. The 5A cables are visually distinctive and most chargers and DUTs are limited to 3A. BUG=b:176110980 BRANCH=servo TEST=Validated the Servo_v4p1 can deliver power at 4.5A and 20V using a 90W charger and a resistive load. Verified current using meters and verified Servo_v4p1 does not heat excessively significantly after over 2 hours at the cable or PCB. TEST=Repeated the same test on older Servo_v4p1 devices with the smaller shunt resistors and 3A compliant cable and verified components remain at reasonable temperatures. Signed-off-by: Brian Nemec Change-Id: If9e67081fe4441ca0fe1039c3189e0673eb8f13a Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2714031 Reviewed-by: Jan Dąbroś Reviewed-by: Matthew Blecker Reviewed-by: Vincent Palatin --- board/servo_v4p1/board.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'board/servo_v4p1/board.h') diff --git a/board/servo_v4p1/board.h b/board/servo_v4p1/board.h index 273014f15b..a43ccbf9f6 100644 --- a/board/servo_v4p1/board.h +++ b/board/servo_v4p1/board.h @@ -235,8 +235,8 @@ /* Define typical operating power and max power */ #define PD_OPERATING_POWER_MW 15000 -#define PD_MAX_POWER_MW 60000 -#define PD_MAX_CURRENT_MA 3000 +#define PD_MAX_POWER_MW 100000 +#define PD_MAX_CURRENT_MA 5000 #define PD_MAX_VOLTAGE_MV 20000 /* Add the raw option to the i2c_xfer command */ -- cgit v1.2.1