diff options
| author | Vadim Bendebury <vbendeb@chromium.org> | 2014-09-09 20:41:33 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-03-28 08:48:34 +0100 |
| commit | f32ef133dd0a905ebffb994da2797cf9bf6633f2 (patch) | |
| tree | 70040b0d5c7b3a4ececff260216f4ccd1a73a01e /src/mainboard/google/storm | |
| parent | c7bbc04544f60d5be44ea4c61899169406066a33 (diff) | |
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>
Reviewed-on: http://review.coreboot.org/9121
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/mainboard/google/storm')
| -rw-r--r-- | src/mainboard/google/storm/mainboard.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/mainboard/google/storm/mainboard.c b/src/mainboard/google/storm/mainboard.c index ebe284911d..3da6f905b2 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) |