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-rw-r--r--src/drivers/i2c/designware/dw_i2c.c24
1 files changed, 7 insertions, 17 deletions
diff --git a/src/drivers/i2c/designware/dw_i2c.c b/src/drivers/i2c/designware/dw_i2c.c
index 93b662a63d..760a735380 100644
--- a/src/drivers/i2c/designware/dw_i2c.c
+++ b/src/drivers/i2c/designware/dw_i2c.c
@@ -817,14 +817,9 @@ void dw_i2c_acpi_fill_ssdt(struct device *dev)
const struct dw_i2c_bus_config *bcfg;
uintptr_t dw_i2c_addr;
struct dw_i2c_speed_config sgen;
- enum i2c_speed speeds[DW_I2C_SPEED_CONFIG_COUNT] = {
- I2C_SPEED_STANDARD,
- I2C_SPEED_FAST,
- I2C_SPEED_FAST_PLUS,
- I2C_SPEED_HIGH,
- };
- int i, bus;
+ int bus;
const char *path;
+ unsigned int speed;
if (!dev->enabled)
return;
@@ -847,20 +842,15 @@ void dw_i2c_acpi_fill_ssdt(struct device *dev)
if (!path)
return;
- acpigen_write_scope(path);
+ /* Ensure a default speed is available */
+ speed = (bcfg->speed == 0) ? I2C_SPEED_FAST : bcfg->speed;
/* Report timing values for the OS driver */
- for (i = 0; i < DW_I2C_SPEED_CONFIG_COUNT; i++) {
- /* Generate speed config. */
- if (dw_i2c_gen_speed_config(dw_i2c_addr, speeds[i], bcfg,
- &sgen) < 0)
- continue;
-
- /* Generate ACPI based on selected speed config */
+ if (dw_i2c_gen_speed_config(dw_i2c_addr, speed, bcfg, &sgen) >= 0) {
+ acpigen_write_scope(path);
dw_i2c_acpi_write_speed_config(&sgen);
+ acpigen_pop_len();
}
-
- acpigen_pop_len();
}
static int dw_i2c_dev_transfer(struct device *dev,