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nuc: enable CLKRUN functionality for SERIRQ quiet mode.

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Set alternative pin from GPIO to CLKRUN if SERIRQ is under quiet mode
Once we need LCLK, CLKRUN will pull low automatically.

Modified drivers:
1. lpc.c.: enable CLKRUN functionality for SERIRQ no matter continuous or
quiet mode.

BUG=chrome-os-partner:34346
TEST=make buildall -j; test nuvoton IC specific drivers
BRANCH=none

Change-Id: I58b11340833b26bc64bfe499272fd3b319b33202
Signed-off-by: CHLin <chlin56@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/314971
Commit-Ready: CH Lin <chlin56@nuvoton.com>
Tested-by: CH Lin <chlin56@nuvoton.com>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This commit is contained in:
CHLin
2015-12-01 13:21:28 +08:00
committed by chrome-bot
parent 3e73320f4d
commit d161f78d42
1 changed files with 6 additions and 0 deletions
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6
chip/npcx/lpc.c
View File

@@ -764,6 +764,12 @@ static void lpc_init(void)
/* Clear Host Access Hold state */
NPCX_SMC_CTL = 0xC0;
/*
* Set alternative pin from GPIO to CLKRUN no matter SERIRQ is under
* continuous or quiet mode.
*/
SET_BIT(NPCX_DEVALT(1), NPCX_DEVALT1_CLKRN_SL);
/* Initialize Hardware for UART Host */
#if CONFIG_UART_HOST
/* Init COMx LPC UART */