Marc Jones (marc.jones@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8215
-gerrit
commit a24cdeb366b9b949ea392a4903161f63767d6f7d Author: Duncan Laurie dlaurie@chromium.org Date: Tue Jul 15 13:41:18 2014 -0700
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 --- src/mainboard/google/samus/gpio.h | 3 ++- src/mainboard/google/samus/romstage.c | 3 +++ 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/mainboard/google/samus/gpio.h b/src/mainboard/google/samus/gpio.h index c2f5fde..806804c 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 2e1a71f..5c6e40d 100644 --- a/src/mainboard/google/samus/romstage.c +++ b/src/mainboard/google/samus/romstage.c @@ -67,6 +67,9 @@ void mainboard_romstage_entry(struct romstage_params *rp) /* Initliaze 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.