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-rw-r--r--src/soc/mediatek/mt8183/gpio.c61
-rw-r--r--src/soc/mediatek/mt8183/include/soc/gpio.h1
2 files changed, 62 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8183/gpio.c b/src/soc/mediatek/mt8183/gpio.c
index d555c3356b..173bf5a891 100644
--- a/src/soc/mediatek/mt8183/gpio.c
+++ b/src/soc/mediatek/mt8183/gpio.c
@@ -19,6 +19,7 @@
enum {
EN_OFFSET = 0x60,
SEL_OFFSET = 0x80,
+ EH_RSEL_OFFSET = 0xF0,
};
static void gpio_set_pull_pupd(gpio_t gpio, enum pull_enable enable,
@@ -67,3 +68,63 @@ void gpio_set_pull(gpio_t gpio, enum pull_enable enable,
else
gpio_set_pull_en_sel(gpio, enable, select);
}
+
+enum {
+ EH_VAL = 0x0,
+ RSEL_VAL = 0x3,
+ EH_MASK = 0x7,
+ RSEL_MASK = 0x3,
+ SCL0_EH = 19,
+ SCL0_RSEL = 15,
+ SDA0_EH = 9,
+ SDA0_RSEL = 5,
+ SCL1_EH = 22,
+ SCL1_RSEL = 17,
+ SDA1_EH = 12,
+ SDA1_RSEL = 7,
+ SCL2_EH = 24,
+ SCL2_RSEL = 20,
+ SDA2_EH = 14,
+ SDA2_RSEL = 10,
+ SCL3_EH = 12,
+ SCL3_RSEL = 10,
+ SDA3_EH = 7,
+ SDA3_RSEL = 5,
+ SCL4_EH = 27,
+ SCL4_RSEL = 22,
+ SDA4_EH = 17,
+ SDA4_RSEL = 12,
+ SCL5_EH = 20,
+ SCL5_RSEL = 18,
+ SDA5_EH = 15,
+ SDA5_RSEL = 13,
+};
+
+#define I2C_EH_RSL_MASK(name) \
+ (EH_MASK << name##_EH | RSEL_MASK << name##_RSEL)
+
+#define I2C_EH_RSL_VAL(name) \
+ (EH_VAL << name##_EH | RSEL_VAL << name##_RSEL)
+
+void gpio_set_i2c_eh_rsel(void)
+{
+ clrsetbits_le32((void *)IOCFG_RB_BASE + EH_RSEL_OFFSET,
+ I2C_EH_RSL_MASK(SCL0) | I2C_EH_RSL_MASK(SDA0) |
+ I2C_EH_RSL_MASK(SCL1) | I2C_EH_RSL_MASK(SDA1),
+ I2C_EH_RSL_VAL(SCL0) | I2C_EH_RSL_VAL(SDA0) |
+ I2C_EH_RSL_VAL(SCL1) | I2C_EH_RSL_VAL(SDA1));
+
+ clrsetbits_le32((void *)IOCFG_RM_BASE + EH_RSEL_OFFSET,
+ I2C_EH_RSL_MASK(SCL2) | I2C_EH_RSL_MASK(SDA2) |
+ I2C_EH_RSL_MASK(SCL4) | I2C_EH_RSL_MASK(SDA4),
+ I2C_EH_RSL_VAL(SCL2) | I2C_EH_RSL_VAL(SDA2) |
+ I2C_EH_RSL_VAL(SCL4) | I2C_EH_RSL_VAL(SDA4));
+
+ clrsetbits_le32((void *)IOCFG_BL_BASE + EH_RSEL_OFFSET,
+ I2C_EH_RSL_MASK(SCL3) | I2C_EH_RSL_MASK(SDA3),
+ I2C_EH_RSL_VAL(SCL3) | I2C_EH_RSL_VAL(SDA3));
+
+ clrsetbits_le32((void *)IOCFG_LB_BASE + EH_RSEL_OFFSET,
+ I2C_EH_RSL_MASK(SCL5) | I2C_EH_RSL_MASK(SDA5),
+ I2C_EH_RSL_VAL(SCL5) | I2C_EH_RSL_VAL(SDA5));
+}
diff --git a/src/soc/mediatek/mt8183/include/soc/gpio.h b/src/soc/mediatek/mt8183/include/soc/gpio.h
index c3c8dda26d..5a98953974 100644
--- a/src/soc/mediatek/mt8183/include/soc/gpio.h
+++ b/src/soc/mediatek/mt8183/include/soc/gpio.h
@@ -616,5 +616,6 @@ struct gpio_regs {
check_member(gpio_regs, mode[22].val, 0x460);
static struct gpio_regs *const mtk_gpio = (void *)(GPIO_BASE);
+void gpio_set_i2c_eh_rsel(void);
#endif