Merge series "Patches to update for rockchip spdif" from Sugar Zhang <sugar.zhang@rock-chips.com>:

These patches fixup or update for rockchip spdif.

Sugar Zhang (4):
  ASoC: rockchip: spdif: Mark SPDIF_SMPDR as volatile
  ASoC: rockchip: spdif: Fix some coding style
  ASoC: rockchip: spdif: Add support for rk3568 spdif
  ASoC: dt-bindings: rockchip: Add compatible for rk3568 spdif

 .../devicetree/bindings/sound/rockchip-spdif.yaml  |  1 +
 sound/soc/rockchip/rockchip_spdif.c                | 38 ++++++++++++----------
 2 files changed, 22 insertions(+), 17 deletions(-)

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2.7.4