diff options
| author | rex_chou <rex_chou@compal.corp-partner.google.com> | 2023-12-29 14:14:38 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2024-01-08 13:05:23 +0000 |
| commit | 3526b9fcaf33c6c7725fa7f0bd901be8ca122a2a (patch) | |
| tree | 12ef65b5d52eacea28abff7b29758eeece87bd37 /src | |
| parent | afed45dbaabafc684883bd2ceade1d76f3eb6089 (diff) | |
mb/google/nissa/var/craaskov: Implement touchscreen power sequencing
For brya variants with a touchscreen, drive the enable GPIO high
starting in romstage while holding in reset, then disable the reset
GPIO in ramstage (done in the baseboard).
BUG=b:317746281
TEST=emerge-nissa coreboot chromeos-bootimage
Change-Id: I3ca2e2d12a86eaae9e37870a2541c0287e354690
Signed-off-by: Rex Chou <rex_chou@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79764
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Reviewed-by: Ian Feng <ian_feng@compal.corp-partner.google.com>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/brya/variants/craaskov/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/mainboard/google/brya/variants/craaskov/gpio.c | 14 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/craaskov/Makefile.inc b/src/mainboard/google/brya/variants/craaskov/Makefile.inc index 7822c45089..d3f2f68f59 100644 --- a/src/mainboard/google/brya/variants/craaskov/Makefile.inc +++ b/src/mainboard/google/brya/variants/craaskov/Makefile.inc @@ -1,6 +1,8 @@ # SPDX-License-Identifier: GPL-2.0-or-later bootblock-y += gpio.c +romstage-y += gpio.c + ramstage-y += gpio.c ramstage-y += variant.c ramstage-$(CONFIG_FW_CONFIG) += fw_config.c diff --git a/src/mainboard/google/brya/variants/craaskov/gpio.c b/src/mainboard/google/brya/variants/craaskov/gpio.c index 8b1446d931..0d280ce2bd 100644 --- a/src/mainboard/google/brya/variants/craaskov/gpio.c +++ b/src/mainboard/google/brya/variants/craaskov/gpio.c @@ -63,6 +63,14 @@ static const struct pad_config early_gpio_table[] = { PAD_CFG_NF(GPP_H11, NONE, DEEP, NF2), }; +static const struct pad_config romstage_gpio_table[] = { + /* Enable touchscreen, hold in reset */ + /* C0 : SMBCLK ==> EN_PP3300_TCHSCR */ + PAD_CFG_GPO(GPP_C0, 1, DEEP), + /* C1 : SMBDATA ==> USI_RST_L */ + PAD_CFG_GPO(GPP_C1, 0, DEEP), +}; + const struct pad_config *variant_gpio_override_table(size_t *num) { *num = ARRAY_SIZE(override_gpio_table); @@ -74,3 +82,9 @@ const struct pad_config *variant_early_gpio_table(size_t *num) *num = ARRAY_SIZE(early_gpio_table); return early_gpio_table; } + +const struct pad_config *variant_romstage_gpio_table(size_t *num) +{ + *num = ARRAY_SIZE(romstage_gpio_table); + return romstage_gpio_table; +} |