diff options
| author | Scott Collyer <scollyer@google.com> | 2020-05-22 12:30:57 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-09-29 01:53:53 +0000 |
| commit | c536b8d03a72d03ee126ab56e5b032287c7f8f2e (patch) | |
| tree | 75120ba536197abcbfb5801f2a8e8cd17ed00481 /baseboard | |
| parent | ed596967eefda1eecc1044efb60a600af5779f6b (diff) | |
| download | chrome-ec-c536b8d03a72d03ee126ab56e5b032287c7f8f2e.tar.gz | |
quiche: Add power sequencing
This CL adds a function in baseboard that will sequence through a list
of gpio controlled power rails and chip resets. The table includes a
delay prior to executing the next entry. The table is intended to be
in board.c as the rails and delays can very much be board specific.
BUG=b:167430750
BRANCH=None
TEST=Verified that power rails come up and status LED is on.
Signed-off-by: Scott Collyer <scollyer@google.com>
Change-Id: I830dee9eb28d4648d274d8cbc49b6972cd70dba5
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2213837
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Commit-Queue: Scott Collyer <scollyer@chromium.org>
Diffstat (limited to 'baseboard')
| -rw-r--r-- | baseboard/honeybuns/baseboard.c | 27 | ||||
| -rw-r--r-- | baseboard/honeybuns/baseboard.h | 20 |
2 files changed, 47 insertions, 0 deletions
diff --git a/baseboard/honeybuns/baseboard.c b/baseboard/honeybuns/baseboard.c index e594d40a0c..e423d5fa16 100644 --- a/baseboard/honeybuns/baseboard.c +++ b/baseboard/honeybuns/baseboard.c @@ -4,8 +4,35 @@ */ /* Honeybuns family-specific configuration */ +#include "console.h" #include "gpio.h" +#include "hooks.h" +#include "timer.h" + +#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args) +#define CPRINTF(format, args...) cprintf(CC_SYSTEM, format, ## args) /******************************************************************************/ +__overridable const struct power_seq board_power_seq[] = { }; + +__overridable const size_t board_power_seq_count = + ARRAY_SIZE(board_power_seq); + +static void board_power_sequence(void) +{ + int i; + for(i = 0; i < board_power_seq_count; i++) { + gpio_set_level(board_power_seq[i].signal, + board_power_seq[i].level); + msleep(board_power_seq[i].delay_ms); + } +} +static void baseboard_init(void) +{ + /* Turn on power rails */ + board_power_sequence(); + CPRINTS("board: Power rails enabled"); +} +DECLARE_HOOK(HOOK_INIT, baseboard_init, HOOK_PRIO_DEFAULT); diff --git a/baseboard/honeybuns/baseboard.h b/baseboard/honeybuns/baseboard.h index 1711fd1717..e67c1ebbeb 100644 --- a/baseboard/honeybuns/baseboard.h +++ b/baseboard/honeybuns/baseboard.h @@ -47,9 +47,29 @@ /* I2C Bus Configuration */ +/* + * Macros for GPIO signals used in common code that don't match the + * schematic names. Signal names in gpio.inc match the schematic and are + * then redefined here to so it's more clear which signal is being used for + * which purpose. + */ +#define GPIO_ENTERING_RW GPIO_EC_ENTERING_RW +#define GPIO_WP_L GPIO_EC_WP_L #ifndef __ASSEMBLER__ +#include "gpio_signal.h" +#include "stddef.h" + +struct power_seq { + enum gpio_signal signal; /* power/reset gpio_signal to control */ + int level; /* level to set in power sequence */ + unsigned int delay_ms; /* delay (in msec) after setting gpio_signal */ +}; + +extern const struct power_seq board_power_seq[]; +extern const size_t board_power_seq_count; + #endif /* !__ASSEMBLER__ */ #endif /* __CROS_EC_BASEBOARD_H */ |