X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fhwmon%2Flm75.c;fp=drivers%2Fhwmon%2Flm75.c;h=c34851725ef75095bee305298124c3ecaf5f5eb3;hb=4d91d1df2f16b511ab80dec50c80e050ba0d841e;hp=e29b29440f237aa537321bc388abce9c86014822;hpb=8c66497e06bf803489c589df58ee591d71033274;p=u-boot

diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index e29b29440f..c34851725e 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -47,6 +47,19 @@ int dtt_read(int sensor, int reg)
     int dlen;
     uchar data[2];
 
+#ifdef CONFIG_DTT_AD7414
+    /*
+     * On AD7414 the first value upon bootup is not read correctly.
+     * This is most likely because of the 800ms update time of the
+     * temp register in normal update mode. To get current values
+     * each time we issue the "dtt" command including upon powerup
+     * we switch into one-short mode.
+     *
+     * Issue one-shot mode command
+     */
+    dtt_write(sensor, DTT_CONFIG, 0x64);
+#endif
+
     /*
      * Validate 'reg' param
      */