By default this chip output's square waves at 32768 Hz - set it to 0 instead

linux_kernel_modules/rtc-pcf85063/rtc-pcf85063.c

@@ -49,10 +49,10 @@
 #define PCF85063_REG_YR			0x0A
 
 /* Lookup for square-wave clkout frequencies */
-#define NUM_FREQUENCIES			7
+#define NUM_FREQUENCIES			8
 static const int clkout_freq_table[NUM_FREQUENCIES][2] = {
 	{32768, 0}, {16384, 1}, {8192, 2}, {4096, 3},
-	{2048, 4}, {1024, 5}, {1, 6}
+	{2048, 4}, {1024, 5}, {1, 6}, {0, 7}
 };
 
 static struct i2c_driver pcf85063_driver;
@@ -334,6 +334,15 @@ static int pcf85063_probe(struct i2c_client *client,
                 goto exit;
         }
 
+	/* By default this chip output's square waves at 32768 Hz - let's
+	 * set to off or COF[2:0] == 7
+	 */
+        err = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL2, (u8) 0x7);
+        if (err) {
+                dev_err(&client->dev, "Failed to write register PCF85063_REG_CTRL2\n");
+                goto exit;
+        }
+
         err = pcf85063_sysfs_register(&client->dev);
         if (err)
                 goto exit;