From 0647f614cd36840989ea5fb3559ecb12286704c4 Mon Sep 17 00:00:00 2001 From: Eric Lai Date: Wed, 9 Sep 2020 16:31:12 +0800 Subject: mb/google/octopus/variants/fleex: support LTE power sequence GPIOs related to power sequence are GPIO_67 - EN_PP3300 GPIO_117 - FULL_CARD_POWER_ON_OFF GPIO_161 - PLT_RST_LTE_L 1. Power on: GPIO_67 -> 0ms -> GPIO_117 -> 30ms -> GPIO_161 2. Power off: GPIO_161 -> 30ms -> GPIO_117 -> 100ms -> GPIO_67 3. Power reset: - keep GPIO_67 and GPIO_117 high and - pull down GPIO_161 for 30ms then release it. BUG=b:168075958 BRANCH=octopus TEST=build image and verify on the DUT with LTE DB. Signed-off-by: Eric Lai Change-Id: I9b56ef8ff346c1d4edd5aad04d4a7396c4702ffc Reviewed-on: https://review.coreboot.org/c/coreboot/+/45193 Reviewed-by: Karthik Ramasubramanian Reviewed-by: Henry Sun Reviewed-by: Ivy Jian Tested-by: build bot (Jenkins) --- .../google/octopus/variants/fleex/Makefile.inc | 2 + src/mainboard/google/octopus/variants/fleex/gpio.c | 27 +++++++++++-- .../google/octopus/variants/fleex/variant.c | 45 ++++++++++++++++++++++ 3 files changed, 71 insertions(+), 3 deletions(-) create mode 100644 src/mainboard/google/octopus/variants/fleex/variant.c (limited to 'src/mainboard') diff --git a/src/mainboard/google/octopus/variants/fleex/Makefile.inc b/src/mainboard/google/octopus/variants/fleex/Makefile.inc index 9fb63f5f43..51c9d39021 100644 --- a/src/mainboard/google/octopus/variants/fleex/Makefile.inc +++ b/src/mainboard/google/octopus/variants/fleex/Makefile.inc @@ -1,3 +1,5 @@ bootblock-y += gpio.c ramstage-y += gpio.c + +ramstage-y += variant.c diff --git a/src/mainboard/google/octopus/variants/fleex/gpio.c b/src/mainboard/google/octopus/variants/fleex/gpio.c index 4d92630cac..8148dcef2d 100644 --- a/src/mainboard/google/octopus/variants/fleex/gpio.c +++ b/src/mainboard/google/octopus/variants/fleex/gpio.c @@ -10,8 +10,10 @@ static const struct pad_config default_override_table[] = { PAD_NC(GPIO_52, UP_20K), PAD_NC(GPIO_53, UP_20K), - PAD_NC(GPIO_67, UP_20K), - PAD_NC(GPIO_117, UP_20K), + /* UART2-CTS_B -- EN_PP3300_DX_LTE_SOC */ + PAD_CFG_GPO(GPIO_67, 1, PWROK), + /* PCIE_WAKE1_B -- FULL_CARD_POWER_OFF */ + PAD_CFG_GPO(GPIO_117, 1, PWROK), PAD_NC(GPIO_143, UP_20K), PAD_NC(GPIO_144, UP_20K), @@ -21,7 +23,8 @@ static const struct pad_config default_override_table[] = { PAD_CFG_GPO_IOSSTATE_IOSTERM(GPIO_146, 0, DEEP, NONE, Tx0RxDCRx0, DISPUPD), - PAD_NC(GPIO_161, UP_20K), + /* AVS_I2S1_MCLK -- PLT_RST_LTE_L */ + PAD_CFG_GPO(GPIO_161, 1, DEEP), PAD_NC(GPIO_213, DN_20K), PAD_NC(GPIO_214, DN_20K), @@ -33,3 +36,21 @@ const struct pad_config *variant_override_gpio_table(size_t *num) return default_override_table; } + +static const struct pad_config lte_early_override_table[] = { + /* UART2-CTS_B -- EN_PP3300_DX_LTE_SOC */ + PAD_CFG_GPO(GPIO_67, 1, PWROK), + + /* PCIE_WAKE1_B -- FULL_CARD_POWER_OFF */ + PAD_CFG_GPO(GPIO_117, 1, PWROK), + + /* AVS_I2S1_MCLK -- PLT_RST_LTE_L */ + PAD_CFG_GPO(GPIO_161, 0, DEEP), +}; + +const struct pad_config *variant_early_override_gpio_table(size_t *num) +{ + *num = ARRAY_SIZE(lte_early_override_table); + + return lte_early_override_table; +} diff --git a/src/mainboard/google/octopus/variants/fleex/variant.c b/src/mainboard/google/octopus/variants/fleex/variant.c new file mode 100644 index 0000000000..c71a63e68b --- /dev/null +++ b/src/mainboard/google/octopus/variants/fleex/variant.c @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include +#include +#include + +struct gpio_with_delay { + gpio_t gpio; + unsigned int delay_msecs; +}; + +static void power_off_lte_module(u8 slp_typ) +{ + const struct gpio_with_delay lte_power_off_gpios[] = { + { + GPIO_161, /* AVS_I2S1_MCLK -- PLT_RST_LTE_L */ + 30, + }, + { + GPIO_117, /* PCIE_WAKE1_B -- FULL_CARD_POWER_OFF */ + 100 + }, + { + GPIO_67, /* UART2-CTS_B -- EN_PP3300_DX_LTE_SOC */ + 0 + } + }; + + for (int i = 0; i < ARRAY_SIZE(lte_power_off_gpios); i++) { + gpio_output(lte_power_off_gpios[i].gpio, 0); + mdelay(lte_power_off_gpios[i].delay_msecs); + } +} + +void variant_smi_sleep(u8 slp_typ) +{ + /* Currently use cases here all target to S5 therefore we do early return + * here for saving one transaction to the EC for getting SKU ID. */ + if (slp_typ != ACPI_S5) + return; + + power_off_lte_module(slp_typ); +} -- cgit v1.2.3