From 4aba826dcf93eb67f30e816acbd02ceba530d335 Mon Sep 17 00:00:00 2001 From: Shawn Nematbakhsh Date: Thu, 30 Jun 2016 17:38:10 -0700 Subject: [PATCH] kevin / gru: Wait to allow ADC 'version' cap to sufficiently charge Allow at least 10ms for the 'version' cap to charge in order to have a voltage on the ADC pin that reflects our voltage divider circuit. BUG=chrome-os-partner:54768 BRANCH=None TEST=Manual on kevin. Run 'ver', verify that rev3 board is recognized as version 3. Change-Id: I1f3326f4c99a165d77363834d5671aa357a89007 Signed-off-by: Shawn Nematbakhsh Reviewed-on: https://chromium-review.googlesource.com/357970 Commit-Ready: Shawn N Tested-by: Shawn N Reviewed-by: Philip Chen --- board/kevin/board.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/board/kevin/board.c b/board/kevin/board.c index dd6daee24d..924f7ca3b4 100644 --- a/board/kevin/board.c +++ b/board/kevin/board.c @@ -313,7 +313,7 @@ int board_get_version(void) gpio_set_level(GPIO_EC_BOARD_ID_EN_L, 0); /* Wait to allow cap charge */ - msleep(1); + msleep(10); mv = adc_read_channel(ADC_BOARD_ID); gpio_set_level(GPIO_EC_BOARD_ID_EN_L, 1);