Furquan Shaikh has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/43463 )
Change subject: mb/google/zork: Drop power and reset control in romstage for dalboz ......................................................................
mb/google/zork: Drop power and reset control in romstage for dalboz
This change drops power and reset control for non PCIe devices in romstage for dalboz reference as this is not required.
+---------------------------------------------------------------------------------------+ | GPIO| Net name | External| Internal| Domain| State at reset | State on S3 resume | | # | | Pull | Pull | | | | +---------------------------------------------------------------------------------------+ | 5 | PEN_POWER_EN | 100K PD | PD | S5 | Powered off | Powered on | | | | | | | (because of | (since power is not| | | | | | | internal PD) | disabled when | | | | | | | | entering S3) | +---------------------------------------------------------------------------------------+ | 6 |EN_PWR_TOUCHPAD| 499K PD | PU | S5 | Powered on | Powered on | | | | | | | (because of | (since trackpad | | | | | | | internal PU) | is wake source) | +---------------------------------------------------------------------------------------+ | 68 | EMMC_RESET_L | 100K PU | PD | S0 | Asserted | Asserted | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ | 76 | EN_PWR_CAMERA | 499K PD | PD | S0 | Powered off | Powered off | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ | 140 | USI_RESET | 10K PD | PD | S0 | Deasserted | Deasserted | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ | 141 | USB_HUB_RST_L | 10K PU | PD | S0 | Asserted | Asserted | | | | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+ +---------------------------------------------------------------------------------------+ | 67 |EN_PWR_TOUCHPAD| 10K PU | PD | S0 | Powered off | Powered off | | |_PS2 (pre-V3) | | | | (because of | (because of | | | | | | | internal PD) | internal PD) | +---------------------------------------------------------------------------------------+
GPIO_140 starts deasserted out of reset and S3 resume, but gets asserted in ramstage since it is eventually deasserted by OS using ACPI methods.
BUG=b:154351731
Signed-off-by: Furquan Shaikh furquan@google.com Change-Id: Ie792a5a9d6420763ff10d1e475c094b6ee514888 --- M src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c 1 file changed, 0 insertions(+), 24 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/63/43463/1
diff --git a/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c b/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c index 44779ea..e8dafee 100644 --- a/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c +++ b/src/mainboard/google/zork/variants/baseboard/gpio_baseboard_dalboz.c @@ -10,55 +10,31 @@ #include <variant/gpio.h>
static const struct soc_amd_gpio gpio_set_stage_rom_pre_v3[] = { - /* PEN_POWER_EN - reset */ - PAD_GPO(GPIO_5, LOW), /* PCIE_RST1_L - Variable timings (May remove) */ PAD_NF(GPIO_27, PCIE_RST1_L, PULL_NONE), /* NVME_AUX_RESET_L */ PAD_GPO(GPIO_40, HIGH), - /* EN_PWR_TOUCHPAD_PS2 - reset */ - PAD_GPO(GPIO_67, LOW), - /* EMMC_RESET - reset (default stuffing unused)*/ - PAD_GPO(GPIO_68, HIGH), - /* EN_PWR_CAMERA - reset */ - PAD_GPO(GPIO_76, LOW), /* CLK_REQ0_L - WIFI */ PAD_NF(GPIO_92, CLK_REQ0_L, PULL_UP), /* CLK_REQ1_L - SD Card */ PAD_NF(GPIO_115, CLK_REQ1_L, PULL_UP), /* CLK_REQ2_L - NVMe */ PAD_NF(GPIO_116, CLK_REQ2_L, PULL_UP), - /* USI_RESET - reset */ - PAD_GPO(GPIO_140, HIGH), - /* USB_HUB_RST_L - reset*/ - PAD_GPO(GPIO_141, LOW), /* SD_AUX_RESET_L */ PAD_GPO(GPIO_142, HIGH), };
static const struct soc_amd_gpio gpio_set_stage_rom_v3[] = { - /* PEN_POWER_EN - reset */ - PAD_GPO(GPIO_5, LOW), - /* EN_PWR_TOUCHPAD_PS2 - reset */ - PAD_GPO(GPIO_6, LOW), /* PCIE_RST1_L - Variable timings (May remove) */ PAD_NF(GPIO_27, PCIE_RST1_L, PULL_NONE), /* NVME_AUX_RESET_L */ PAD_GPO(GPIO_40, HIGH), - /* EMMC_RESET - reset (default stuffing unused)*/ - PAD_GPO(GPIO_68, HIGH), - /* EN_PWR_CAMERA - reset */ - PAD_GPO(GPIO_76, LOW), /* CLK_REQ0_L - WIFI */ PAD_NF(GPIO_92, CLK_REQ0_L, PULL_UP), /* CLK_REQ1_L - SD Card */ PAD_NF(GPIO_115, CLK_REQ1_L, PULL_UP), /* CLK_REQ2_L - NVMe */ PAD_NF(GPIO_116, CLK_REQ2_L, PULL_UP), - /* USI_RESET - reset */ - PAD_GPO(GPIO_140, HIGH), - /* USB_HUB_RST_L - reset*/ - PAD_GPO(GPIO_141, LOW), /* SD_AUX_RESET_L */ PAD_GPO(GPIO_142, HIGH), };