Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11385
-gerrit
commit ee2f8bcd2d301dd074427407686aadb273129d27 Author: David Hendricks dhendrix@chromium.org 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 patrick@georgi-clan.de Original-Commit-Id: a90ccd7fbffe44abe05e96341cc77067442c85e4 Original-Change-Id: I3516de1ea9160f7186ad7f5fb3b5d29ac73143b5 Original-Signed-off-by: David Hendricks dhendrix@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/290890 Original-Reviewed-by: Alexandru Stan amstan@chromium.org --- 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();