2 files changed, 115 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/sundance/Makefile.mk b/src/mainboard/google/brya/variants/sundance/Makefile.mk
new file mode 100644
index 0000000000..d38141ca24
--- /dev/null
+++ b/src/mainboard/google/brya/variants/sundance/Makefile.mk
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+bootblock-y += gpio.c
+
+romstage-y += gpio.c
+
+ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/sundance/gpio.c b/src/mainboard/google/brya/variants/sundance/gpio.c
new file mode 100644
index 0000000000..bd36f054dd
--- /dev/null
+++ b/src/mainboard/google/brya/variants/sundance/gpio.c
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <commonlib/helpers.h>
+#include <soc/gpio.h>
+#include <fw_config.h>
+
+/* Pad configuration in ramstage for Sundance */
+static const struct pad_config override_gpio_table[] = {
+	/* A8  : WWAN_RF_DISABLE_ODL */
+	PAD_CFG_GPO(GPP_A8, 1, DEEP),
+	/* A20  : NC */
+	PAD_NC_LOCK(GPP_A20, NONE, LOCK_CONFIG),
+	/* B5  : NC */
+	PAD_NC_LOCK(GPP_B5, NONE, LOCK_CONFIG),
+	/* B6  : NC */
+	PAD_NC_LOCK(GPP_B6, NONE, LOCK_CONFIG),
+	/* C1  : SMBDATA ==> USI_RST_L */
+	PAD_CFG_TERM_GPO(GPP_C1, 1, UP_20K, DEEP),
+	/* D3  : WCAM_RST_L ==> NC */
+	PAD_NC_LOCK(GPP_D3, NONE, LOCK_CONFIG),
+	/* D6  : SRCCLKREQ1# ==> WWAN_EN */
+	PAD_CFG_GPO(GPP_D6, 1, DEEP),
+	/* D8  : NC */
+	PAD_NC_LOCK(GPP_D8, NONE, LOCK_CONFIG),
+	/* D15  : EN_PP2800_WCAM_X ==> NC */
+	PAD_NC_LOCK(GPP_D15, NONE, LOCK_CONFIG),
+	/* D16  : EN_PP1800_PP1200_WCAM_X ==> NC */
+	PAD_NC_LOCK(GPP_D16, NONE, LOCK_CONFIG),
+	/* D17 : NC ==> SD_WAKE_N */
+	PAD_CFG_GPI_LOCK(GPP_D17, NONE, LOCK_CONFIG),
+	/* E20  : NC */
+	PAD_NC_LOCK(GPP_E20, NONE, LOCK_CONFIG),
+	/* E21  : NC */
+	PAD_NC_LOCK(GPP_E21, NONE, LOCK_CONFIG),
+	/* F12 : WWAN_RST_L */
+	PAD_CFG_GPO_LOCK(GPP_F12, 1, LOCK_CONFIG),
+	/* F13  : NC */
+	PAD_NC_LOCK(GPP_F13, NONE, LOCK_CONFIG),
+	/* F15  : NC */
+	PAD_NC_LOCK(GPP_F15, NONE, LOCK_CONFIG),
+	/* H12  : NC */
+	PAD_NC_LOCK(GPP_H12, NONE, LOCK_CONFIG),
+	/* H13  : NC */
+	PAD_NC_LOCK(GPP_H13, NONE, LOCK_CONFIG),
+	/* H19  : NC */
+	PAD_NC_LOCK(GPP_H19, NONE, LOCK_CONFIG),
+	/* H22  : WCAM_MCLK_R ==> NC */
+	PAD_NC(GPP_H22, NONE),
+	/* H23 : WWAN_SAR_DETECT_ODL ==> NC */
+	PAD_NC_LOCK(GPP_H23, NONE, LOCK_CONFIG),
+};
+
+/* Early pad configuration in bootblock */
+static const struct pad_config early_gpio_table[] = {
+	/* A13 : GPP_A13 ==> GSC_SOC_INT_ODL */
+	PAD_CFG_GPI_APIC(GPP_A13, NONE, PLTRST, LEVEL, INVERT),
+	/*
+	* WWAN_EN is asserted in ramstage to meet the 500 ms warm reset toff
+	* requirement. WWAN_EN must be asserted before WWAN_RST_L is released
+	* (with min delay 0 ms), so this works as long as the pin used for
+	* WWAN_EN comes before the pin used for WWAN_RST_L.
+	*/
+	/* D6  : SRCCLKREQ1# ==> WWAN_EN */
+	PAD_CFG_GPO(GPP_D6, 0, DEEP),
+	/* E12 : THC0_SPI1_IO1 ==> SOC_WP_OD */
+	PAD_CFG_GPI_GPIO_DRIVER(GPP_E12, NONE, DEEP),
+	/* F12 : WWAN_RST_L */
+	PAD_CFG_GPO(GPP_F12, 0, DEEP),
+	/* F18 : THC1_SPI2_INT# ==> EC_IN_RW_OD */
+	PAD_CFG_GPI(GPP_F18, NONE, DEEP),
+	/* H4  : I2C0_SDA ==> SOC_I2C_GSC_SDA */
+	PAD_CFG_NF(GPP_H4, NONE, DEEP, NF1),
+	/* H5  : I2C0_SCL ==> SOC_I2C_GSC_SCL */
+	PAD_CFG_NF(GPP_H5, NONE, DEEP, NF1),
+	/* H10 : UART0_RXD ==> UART_SOC_RX_DBG_TX */
+	PAD_CFG_NF(GPP_H10, NONE, DEEP, NF2),
+	/* H11 : UART0_TXD ==> UART_SOC_TX_DBG_RX */
+	PAD_CFG_NF(GPP_H11, NONE, DEEP, NF2),
+};
+
+/* Pad configuration in romstage for Sundance */
+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_TERM_GPO(GPP_C1, 0, UP_20K, DEEP),
+};
+
+const struct pad_config *variant_gpio_override_table(size_t *num)
+{
+	*num = ARRAY_SIZE(override_gpio_table);
+	return override_gpio_table;
+}
+
+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;
+}