diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/brya/variants/agah/variant.c | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/src/mainboard/google/brya/variants/agah/variant.c b/src/mainboard/google/brya/variants/agah/variant.c index b8b5af524e..b1ab79f05e 100644 --- a/src/mainboard/google/brya/variants/agah/variant.c +++ b/src/mainboard/google/brya/variants/agah/variant.c @@ -40,10 +40,13 @@ struct power_rail_sequence { /* This is the GPIO (input) connected to the VR's power-good pin. */ gpio_t pg_gpio; + + /* Delay after sequencing this rail. */ + unsigned int delay_ms; }; /* In GCOFF exit order (i.e., power-on order) */ -static const struct power_rail_sequence gpu_rails[] = { +static const struct power_rail_sequence gpu_on_seq[] = { { "GPU 1.8V", GPU_1V8_PWR_EN, false, GPU_1V8_PG, }, { "NV3_3", NV33_PWR_EN, false, NV33_PG, }, { "NVVDD+MSVDD", NVVDD_PWR_EN, false, NVVDD_PG, }, @@ -51,6 +54,15 @@ static const struct power_rail_sequence gpu_rails[] = { { "FBVDD", FBVDD_PWR_EN, true, FBVDD_PG, }, }; +/* In GCOFF entry order (i.e., power-off order) */ +static const struct power_rail_sequence gpu_off_seq[] = { + { "NV3_3", NV33_PWR_EN, false, NV33_PG, 15,}, + { "PEXVDD", PEXVDD_PWR_EN, false, PEXVDD_PG, 2,}, + { "NVVDD+MSVDD", NVVDD_PWR_EN, false, NVVDD_PG, 2,}, + { "FBVDD", FBVDD_PWR_EN, true, FBVDD_PG, 150,}, + { "GPU 1.8V", GPU_1V8_PWR_EN, false, GPU_1V8_PG, 0,}, +}; + enum rail_state { RAIL_OFF = 0, RAIL_ON = 1, @@ -60,12 +72,17 @@ enum rail_state { static bool sequence_rail(const struct power_rail_sequence *seq, enum rail_state state) { enum rail_state pwr_en_state = state; + bool result; if (seq->pwr_en_active_low) pwr_en_state = !pwr_en_state; gpio_output(seq->pwr_en_gpio, pwr_en_state); - return wait_us(DEFAULT_PG_TIMEOUT_US, gpio_get(seq->pg_gpio) == state) > 0; + result = wait_us(DEFAULT_PG_TIMEOUT_US, gpio_get(seq->pg_gpio) == state) >= 0; + if (seq->delay_ms) + mdelay(seq->delay_ms); + + return result; } static void dgpu_power_sequence_off(void) @@ -77,10 +94,10 @@ static void dgpu_power_sequence_off(void) /* Inform the GPU that the power is no longer good. */ gpio_output(GPU_ALLRAILS_PG, 0); - for (int i = (int)ARRAY_SIZE(gpu_rails) - 1; i >= 0; i--) { - if (!sequence_rail(&gpu_rails[i], RAIL_OFF)) { + for (size_t i = 0; i < ARRAY_SIZE(gpu_off_seq); i++) { + if (!sequence_rail(&gpu_off_seq[i], RAIL_OFF)) { printk(BIOS_ERR, "Failed to disable %s rail, continuing!\n", - gpu_rails[i].name); + gpu_off_seq[i].name); } } } @@ -90,10 +107,10 @@ static void dgpu_power_sequence_on(void) /* Assert PERST# */ gpio_output(GPU_PERST_L, 0); - for (size_t i = 0; i < ARRAY_SIZE(gpu_rails); i++) { - if (!sequence_rail(&gpu_rails[i], RAIL_ON)) { + for (size_t i = 0; i < ARRAY_SIZE(gpu_on_seq); i++) { + if (!sequence_rail(&gpu_on_seq[i], RAIL_ON)) { printk(BIOS_ERR, "Failed to enable %s rail, sequencing back down!\n", - gpu_rails[i].name); + gpu_on_seq[i].name); /* If an error occurred, then perform the power-off sequence and return early to avoid setting GPU_ALLRAILS_PG and PERST_L. */ |