[coreboot-gerrit] New patch to review for coreboot: veyron_rialto: Force 3G modem off

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11385

-gerrit

commit 2407438231560f4c3d23b7059a7fa58e82133e05
Author: David Hendricks 
Date:   Wed Aug 5 14:13:34 2015 -0700

veyron_rialto: Force 3G modem off

This basically does the same thing for firmware what CL:290631
    did in the kernel. We want to keep the modem off until it needs
    to be used to avoid enumeration/detection issues.

BUG=chrome-os-partner:43271
    BRANCH=none
    TEST=needs testing

Change-Id: I3b63a77c732dc4895b728b30f1dd71210a9c0e90
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: a90ccd7fbffe44abe05e96341cc77067442c85e4
    Original-Change-Id: I3516de1ea9160f7186ad7f5fb3b5d29ac73143b5
    Original-Signed-off-by: David Hendricks 
    Original-Reviewed-on: https://chromium-review.googlesource.com/290890
    Original-Reviewed-by: Alexandru Stan 
---
 src/mainboard/google/veyron_rialto/mainboard.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/mainboard/google/veyron_rialto/mainboard.c b/src/mainboard/google/veyron_rialto/mainboard.c
index 52a27bb..4dba666 100644
--- a/src/mainboard/google/veyron_rialto/mainboard.c
+++ b/src/mainboard/google/veyron_rialto/mainboard.c
@@ -72,6 +72,14 @@ static void configure_codec(void)
    rkclk_configure_i2s(12288000);
 }

+static void configure_3g(void)
+{
+	/* Force 3G modem off to avoid confusing the EHCI host and
+	 * causing problems during enumeration/init */
+	gpio_output(GPIO(5, C, 1), 1);	/* 3G_SHUTDOWN */
+	gpio_output(GPIO(4, D, 2), 0);	/* 3G_ON_OFF */
+}
+
 static void mainboard_init(device_t dev)
 {
    gpio_output(GPIO_RESET, 0);
@@ -79,6 +87,7 @@ static void mainboard_init(device_t dev)
    configure_usb();
    configure_emmc();
    configure_codec();
+	configure_3g();
    /* No video. */

elog_init();