diff options
| author | Roger Hsieh <rhsieh@nvidia.com> | 2012-07-30 16:20:38 +0800 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-08-02 09:37:03 -0700 |
| commit | 940211c305fe0bed54b19847633800b77c369a46 (patch) | |
| tree | a9be414d0aed8dc8d6ee5f7fe2f8e896a0ac2255 | |
| parent | 95b5dfcb4b7e25725b534d55b0b451622851c484 (diff) | |
arm: tegra: fuse: check SENSE_DONE after fuse programming
Make fuse burning take effect by checking SENSE_DONE. Without this
chip options will not be available on fuse registers until
power on reset or LP0 resume.
Bug 1020726
Change-Id: Id547d1ea51b023ba904f5751c2ad65667375777d
Signed-off-by: Roger Hsieh <rhsieh@nvidia.com>
Reviewed-on: http://git-master/r/119271
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
| -rw-r--r-- | arch/arm/mach-tegra/tegra_odm_fuses.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra_odm_fuses.c b/arch/arm/mach-tegra/tegra_odm_fuses.c index 06b831c31967..ae82ed56f0f0 100644 --- a/arch/arm/mach-tegra/tegra_odm_fuses.c +++ b/arch/arm/mach-tegra/tegra_odm_fuses.c @@ -53,6 +53,7 @@ #define NFUSES 64 #define STATE_IDLE (0x4 << 16) +#define SENSE_DONE (0x1 << 30) /* since fuse burning is irreversible, use this for testing */ #define ENABLE_FUSE_BURNING 1 @@ -607,6 +608,17 @@ static void fuse_program_array(int pgm_cycles) } fuse_power_disable(); + + /* + * Wait until done (polling) + * this one needs to use fuse_sense done, the FSM follows a periodic + * sequence that includes idle + */ + do { + udelay(1); + reg = tegra_fuse_readl(FUSE_CTRL); + } while ((reg & (0x1 << 30)) != SENSE_DONE); + } static int fuse_set(enum fuse_io_param io_param, u32 *param, int size) |