diff options
| author | Duncan Laurie <dlaurie@chromium.org> | 2014-07-15 13:41:18 -0700 |
|---|---|---|
| committer | Marc Jones <marc.jones@se-eng.com> | 2015-01-19 22:17:16 +0100 |
| commit | 808a254c3f38e85d97758d8551bd423ab5e9ef05 (patch) | |
| tree | f8268af02b6e5570a938468617a6fce79defb766 /src/mainboard/google | |
| parent | 6a342cb699d3573e366053076df5808c738de7e6 (diff) | |
samus: Delay bringing SSD out of reset
In order to ensure that we meet timing requirements for the SSD
power sequencing delay bringing the SSD out of reset until after
memory training.
BUG=chrome-os-partner:29914
BRANCH=None
TEST=build and boot on samus
Original-Change-Id: I807e3d3698255287c3fe7219f44e8ec9a0985df1
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/208155
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 1cf557049c49e1ba11ade1eee7a45fc2b075ff3d)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: Ib39a14a03e04a167fab45b58b3bc840eb4bcf317
Reviewed-on: http://review.coreboot.org/8215
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/mainboard/google')
| -rw-r--r-- | src/mainboard/google/samus/gpio.h | 3 | ||||
| -rw-r--r-- | src/mainboard/google/samus/romstage.c | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/src/mainboard/google/samus/gpio.h b/src/mainboard/google/samus/gpio.h index c2f5fdea15..806804c719 100644 --- a/src/mainboard/google/samus/gpio.h +++ b/src/mainboard/google/samus/gpio.h @@ -23,6 +23,7 @@ #include <broadwell/gpio.h> #define SAMUS_GPIO_PP3300_AUTOBAHN_EN 23 +#define SAMUS_GPIO_SSD_RESET_L 47 static const struct gpio_config mainboard_gpio_config[] = { PCH_GPIO_UNUSED, /* 0: UNUSED */ @@ -72,7 +73,7 @@ static const struct gpio_config mainboard_gpio_config[] = { PCH_GPIO_UNUSED, /* 44: UNUSED */ PCH_GPIO_PIRQ, /* 45: DSP_INT (PIRQN) */ PCH_GPIO_PIRQ, /* 46: HOTWORD_DET_L (PIRQO) */ - PCH_GPIO_OUT_HIGH, /* 47: SSD_RESET_L */ + PCH_GPIO_OUT_LOW, /* 47: SSD_RESET_L */ PCH_GPIO_UNUSED, /* 48: UNUSED */ PCH_GPIO_UNUSED, /* 49: UNUSED */ PCH_GPIO_UNUSED, /* 50: UNUSED */ diff --git a/src/mainboard/google/samus/romstage.c b/src/mainboard/google/samus/romstage.c index c0c7200102..b26cc4ece8 100644 --- a/src/mainboard/google/samus/romstage.c +++ b/src/mainboard/google/samus/romstage.c @@ -66,6 +66,9 @@ void mainboard_romstage_entry(struct romstage_params *rp) /* Initalize memory */ romstage_common(rp); + /* Bring SSD out of reset */ + set_gpio(SAMUS_GPIO_SSD_RESET_L, GPIO_OUT_HIGH); + /* * Enable PP3300_AUTOBAHN_EN after initial GPIO setup * to prevent possible brownout. |