1 files changed, 67 insertions, 0 deletions
diff --git a/src/mainboard/amd/birman/ec.c b/src/mainboard/amd/birman/ec.c
new file mode 100644
index 000000000000..3775ef5a2a27
--- /dev/null
+++ b/src/mainboard/amd/birman/ec.c
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* TODO: Update for birman */
+
+#include <ec/acpi/ec.h>
+#include "ec.h"
+
+#define BIRMAN_EC_CMD		0x666
+#define BIRMAN_EC_DATA		0x662
+
+#define EC_GPIO_3_ADDR		0xA3
+#define EC_GPIO_LOM_RESET_AUX	BIT(1)
+
+#define EC_GPIO_7_ADDR		0xA7
+#define EC_GPIO_DT_PWREN	BIT(2)
+#define EC_GPIO_WWAN_MODULE_RST	BIT(5)
+
+#define EC_GPIO_8_ADDR		0xA8
+#define EC_GPIO_SMBUS0_EN	BIT(0)
+
+#define EC_GPIO_A_ADDR		0xAA
+#define EC_GPIO_WWAN_PWREN	BIT(3)
+#define EC_GPIO_M2_SSD0_PWREN	BIT(6)
+#define EC_GPIO_LOM_PWREN	BIT(7)
+
+#define EC_GPIO_C_ADDR		0xAC
+#define EC_GPIO_DT_N_WLAN_SW	BIT(1)
+#define EC_GPIO_MP2_SEL		BIT(2)
+#define EC_GPIO_WWAN_N_LOM_SW	BIT(3)
+
+#define EC_SW02_ADDR		0xB7
+#define EC_SW02_MS		BIT(7)
+
+static void configure_ec_gpio(void)
+{
+	uint8_t tmp;
+
+	tmp = ec_read(EC_GPIO_3_ADDR);
+	tmp |= EC_GPIO_LOM_RESET_AUX;
+	ec_write(EC_GPIO_3_ADDR, tmp);
+
+	tmp = ec_read(EC_GPIO_7_ADDR);
+	tmp |= EC_GPIO_WWAN_MODULE_RST | EC_GPIO_DT_PWREN;
+	ec_write(EC_GPIO_7_ADDR, tmp);
+
+	tmp = ec_read(EC_GPIO_8_ADDR);
+	tmp |= EC_GPIO_SMBUS0_EN;
+	ec_write(EC_GPIO_8_ADDR, tmp);
+
+	tmp = ec_read(EC_GPIO_A_ADDR);
+	tmp |= EC_GPIO_M2_SSD0_PWREN | EC_GPIO_LOM_PWREN | EC_GPIO_WWAN_PWREN;
+	ec_write(EC_GPIO_A_ADDR, tmp);
+
+	tmp = ec_read(EC_GPIO_C_ADDR);
+	tmp |= EC_GPIO_WWAN_N_LOM_SW | EC_GPIO_MP2_SEL | EC_GPIO_DT_N_WLAN_SW;
+	ec_write(EC_GPIO_C_ADDR, tmp);
+
+	tmp = ec_read(EC_SW02_ADDR);
+	tmp |= EC_SW02_MS;
+	ec_write(EC_SW02_ADDR, tmp);
+}
+
+void birman_ec_init(void)
+{
+	ec_set_ports(BIRMAN_EC_CMD, BIRMAN_EC_DATA);
+	configure_ec_gpio();
+}