Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9121
-gerrit
commit 0bf0ca9cd2477288042842f46bfc5cf0e6c61c9b Author: Vadim Bendebury vbendeb@chromium.org Date: Tue Sep 9 20:41:33 2014 -0700
storm: fix SW_RESET signal polarity
The actual level required to take the ethernet switch out of reset is low, not high.
BUG=chrome-os-partner:31780 TEST=with this patch applied, when proto0.2 boots, the ethernet switch's LED blink once, as was the case with proto0.
Change-Id: If4004ac5c2dc837270d4cb840d96ce92021d231e Signed-off-by: Patrick Georgi pgeorgi@chromium.org Original-Commit-Id: 9fa69d22de901cd0843948de0f95a66a2aa99353 Original-Change-Id: I81eeb73b85cf113709b6d4ac3aa7639a40fa6719 Original-Signed-off-by: Vadim Bendebury vbendeb@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/217416 Original-Reviewed-by: David Hendricks dhendrix@chromium.org --- src/mainboard/google/storm/mainboard.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/src/mainboard/google/storm/mainboard.c b/src/mainboard/google/storm/mainboard.c index 0482af0..b089967 100644 --- a/src/mainboard/google/storm/mainboard.c +++ b/src/mainboard/google/storm/mainboard.c @@ -97,11 +97,16 @@ static void deassert_sw_reset(void) if (board_id() == 0) return;
- /* only proto0.2 and later care about this. */ + /* + * only proto0.2 and later care about this. This signal is eventually + * driving the ehernet switch reset input, which is active low. But + * since this signal gets inverted along the way, the GPIO needs to be + * driven low to take the switch out of reset. + */ gpio_tlmm_config_set(SW_RESET_GPIO, FUNC_SEL_GPIO, GPIO_PULL_UP, GPIO_4MA, GPIO_ENABLE);
- gpio_set_out_value(SW_RESET_GPIO, 1); + gpio_set_out_value(SW_RESET_GPIO, 0); }
static void mainboard_init(device_t dev)