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nocturne: Add NVMe power enable controls.

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The EC needs to enable/disable the NVMe power rails on bootup and
shutdown.  This commit just adds these controls in during chipset
startup and shutdown.

BUG=b:73258414
BRANCH=poppy
TEST=Flash nocturne, verify that rails come up on boot up and are turned
off on shutdown.

Change-Id: I3dc8c17255294c0bbf8638ea3ee3fcfaa321929b
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1067947
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@google.com>
This commit is contained in:
Aseda Aboagye
2018-05-21 14:26:17 -07:00
committed by chrome-bot
parent 37987e1e7d
commit 884500ad51
1 changed files with 8 additions and 0 deletions
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8
board/nocturne/board.c
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@@ -295,12 +295,20 @@ struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_COUNT] = {
void board_chipset_startup(void)
{
gpio_set_level(GPIO_EN_5V, 1);
gpio_set_level(GPIO_PP3300_NVME_EN, 1);
msleep(2);
gpio_set_level(GPIO_PP1800_NVME_EN, 1);
gpio_set_level(GPIO_PPVAR_NVME_CORE_EN, 1);
}
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
void board_chipset_shutdown(void)
{
gpio_set_level(GPIO_EN_5V, 0);
gpio_set_level(GPIO_PPVAR_NVME_CORE_EN, 0);
gpio_set_level(GPIO_PP1800_NVME_EN, 0);
msleep(2);
gpio_set_level(GPIO_PP3300_NVME_EN, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);