[RFC PATCH 0/2] regmap: Add cache_default_is_zero flag for flat cache

["Sheetal ." <sheetal@nvidia.com>]

From: Sheetal <sheetal@nvidia.com>

This patch series adds a cache_default_is_zero flag for REGCACHE_FLAT that
marks cache entries as valid on first read.

For hardware with zero power-on-reset registers, this avoids the need
to add all such registers to reg_defaults (maintenance burden, code
bloat, no functional benefit) just to set the validity bits.

Sheetal (2):
  regmap: Add cache_default_is_zero flag for flat cache
  ASoC: tegra: Enable cache_default_is_zero for audio drivers

 drivers/base/regmap/internal.h      |  2 ++
 drivers/base/regmap/regcache-flat.c | 11 +++++++----
 drivers/base/regmap/regcache.c      |  1 +
 include/linux/regmap.h              |  3 +++
 sound/soc/tegra/tegra186_asrc.c     |  1 +
 sound/soc/tegra/tegra186_dspk.c     |  1 +
 sound/soc/tegra/tegra210_admaif.c   |  3 +++
 sound/soc/tegra/tegra210_adx.c      |  2 ++
 sound/soc/tegra/tegra210_ahub.c     |  3 +++
 sound/soc/tegra/tegra210_amx.c      |  3 +++
 sound/soc/tegra/tegra210_dmic.c     |  1 +
 sound/soc/tegra/tegra210_i2s.c      |  2 ++
 sound/soc/tegra/tegra210_mbdrc.c    |  1 +
 sound/soc/tegra/tegra210_mixer.c    |  1 +
 sound/soc/tegra/tegra210_mvc.c      |  1 +
 sound/soc/tegra/tegra210_ope.c      |  1 +
 sound/soc/tegra/tegra210_peq.c      |  1 +
 sound/soc/tegra/tegra210_sfc.c      |  1 +
 18 files changed, 35 insertions(+), 4 deletions(-)

-- 
2.17.1