target/linux/imx6/patches-3.12/0021-regulator-pfuze100-allow-misprogrammed-ID.patch

   1 From: Tim Harvey <tharvey@gateworks.com>
   2 Subject: [PATCH] regulator: pfuze100: allow misprogrammed ID
   3
   4 prior to week 08 of 2013 Freescale misprogrammed between 1 and 3% of
   5 PFUZE1000 parts with a ID=0x8 instead of the expected ID=0x0
   6
   7 Signed-off-by: Tim Harvey <tharvey@gateworks.com>
   8 ---
   9  drivers/regulator/pfuze100-regulator.c | 12 +++++++++---
  10  1 file changed, 9 insertions(+), 3 deletions(-)
  11
  12 --- a/drivers/regulator/pfuze100-regulator.c
  13 +++ b/drivers/regulator/pfuze100-regulator.c
  14 @@ -308,9 +308,15 @@ static int pfuze_identify(struct pfuze_c
  15         if (ret)
  16                 return ret;
  17
  18 -       if (value & 0x0f) {
  19 -               dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
  20 -               return -ENODEV;
  21 +       switch (value & 0x0f) {
  22 +               /* Freescale misprogrammed 1-3% of parts prior to week 8 of 2013 as ID=8 */
  23 +               case 0x8:
  24 +                       dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8");
  25 +               case 0x0:
  26 +                       break;
  27 +               default:
  28 +                       dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
  29 +                       return -ENODEV;
  30         }
  31
  32         ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);