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| author | Edward Hill <ecgh@chromium.org> | 2017-12-07 16:05:39 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-12-11 22:44:29 -0800 |
| commit | 716fcb123d36a46d8432c1e45d49f6828bba93ff (patch) | |
| tree | 5ca0802ca88eac57fdb83d19203f809c370b5031 /power/stoney.c | |
| parent | 359b98c312521bdaee2e4065e1d39ae7ab70f1c4 (diff) | |
| download | chrome-ec-716fcb123d36a46d8432c1e45d49f6828bba93ff.tar.gz | |
grunt: Add delay to PWR_GOOD
Add delay of 1ms with stable power before asserting PWR_GOOD.
CDX03 seems to work ok with and without the delay, but since it
is a requirement in the electrical data sheet, better add it.
Also removed an unnecessary header while I was here.
BUG=b:70350333
BRANCH=none
TEST=power CDX03 on and off
Change-Id: I9f2f94bfb907ac9e88f350e72286061a97ebfe3d
Signed-off-by: Edward Hill <ecgh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/816063
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Diffstat (limited to 'power/stoney.c')
| -rw-r--r-- | power/stoney.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/power/stoney.c b/power/stoney.c index 7b10746326..5e131e71e4 100644 --- a/power/stoney.c +++ b/power/stoney.c @@ -21,12 +21,13 @@ #include "util.h" #include "wireless.h" #include "registers.h" -#include "stoney.h" /* Console output macros */ #define CPUTS(outstr) cputs(CC_CHIPSET, outstr) #define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args) +#define IN_SPOK POWER_SIGNAL_MASK(X86_SPOK) + static int forcing_coldreset; /* Forced coldreset in progress? */ static int forcing_shutdown; /* Forced shutdown in progress? */ @@ -108,6 +109,13 @@ static void handle_pass_through(enum power_state state, if (in_level == out_level) return; + /* + * SOC requires a delay of 1ms with stable power before + * asserting PWR_GOOD. + */ + if ((pin_in == GPIO_VGATE) && in_level) + msleep(1); + gpio_set_level(pin_out, in_level); CPRINTS("Pass through %s: %d", gpio_get_name(pin_in), in_level); @@ -257,10 +265,8 @@ enum power_state power_handle_state(enum power_state state) { enum power_state new_state; - /* Process RSMRST_L state changes. */ handle_pass_through(state, GPIO_SPOK, GPIO_PCH_RSMRST_L); - /* Process ALL_SYS_PGOOD state changes. */ handle_pass_through(state, GPIO_VGATE, GPIO_PCH_SYS_PWROK); new_state = _power_handle_state(state); |