target/linux/generic/backport-5.10/808-v5.18-0008-nvmem-qfprom-Increase-fuse-blow-timeout-to-prevent-w.patch

   1 From bc5c75e0a5a9400f81a987cc720100ac475fa4d8 Mon Sep 17 00:00:00 2001
   2 From: Knox Chiou <knoxchiou@chromium.org>
   3 Date: Wed, 23 Feb 2022 22:35:00 +0000
   4 Subject: [PATCH] nvmem: qfprom: Increase fuse blow timeout to prevent write
   5  fail
   6
   7 sc7180 blow fuses got slightly chances to hit qfprom_reg_write timeout.
   8 Current timeout is simply too low. Since blowing fuses is a
   9 very rare operation, so the risk associated with overestimating this
  10 number is low.
  11 Increase fuse blow timeout from 1ms to 10ms.
  12
  13 Reviewed-by: Douglas Anderson <dianders@chromium.org>
  14 Signed-off-by: Knox Chiou <knoxchiou@chromium.org>
  15 Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
  16 Link: https://lore.kernel.org/r/20220223223502.29454-2-srinivas.kandagatla@linaro.org
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  18 ---
  19  drivers/nvmem/qfprom.c | 2 +-
  20  1 file changed, 1 insertion(+), 1 deletion(-)
  21
  22 --- a/drivers/nvmem/qfprom.c
  23 +++ b/drivers/nvmem/qfprom.c
  24 @@ -22,7 +22,7 @@
  25
  26  /* Amount of time required to hold charge to blow fuse in micro-seconds */
  27  #define QFPROM_FUSE_BLOW_POLL_US       100
  28 -#define QFPROM_FUSE_BLOW_TIMEOUT_US    1000
  29 +#define QFPROM_FUSE_BLOW_TIMEOUT_US    10000
  30
  31  #define QFPROM_BLOW_STATUS_OFFSET      0x048
  32  #define QFPROM_BLOW_STATUS_BUSY                0x1