diff options
| author | Alison Wang <alison.wang@nxp.com> | 2018-12-26 03:59:53 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-01-07 21:11:25 +0300 |
| commit | 5dc4ca2996840db569e43d00420c10499140274a (patch) | |
| tree | b3e4bd57d6a502628edb08692ff339c5e808f18b /Documentation | |
| parent | 47caf048a017ecc95cdd0802bc3b015a1559e601 (diff) | |
| download | linux-5dc4ca2996840db569e43d00420c10499140274a.tar.xz | |
ASoC: sgtl5000: Allow SCLK pad drive strength to be changed
This patch introduces "sclk-strength" property to allow SCLK pad drive
strength to be changed via device tree.
When running playback test on LS1028ARDB, Tx Frame sync error interrupt
will occur sometimes. Some noises also exist. After changing SCLK pad
drive strength to the maximum value, the issues are gone.
Signed-off-by: Alison Wang <alison.wang@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/sgtl5000.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/sgtl5000.txt b/Documentation/devicetree/bindings/sound/sgtl5000.txt index 9c58f724396a..9d9ff5184939 100644 --- a/Documentation/devicetree/bindings/sound/sgtl5000.txt +++ b/Documentation/devicetree/bindings/sound/sgtl5000.txt @@ -37,6 +37,15 @@ VDDIO 1.8V 2.5V 3.3V 2 = 3.33 mA 5.74 mA 8.03 mA 3 = 4.99 mA 8.61 mA 12.05 mA +- sclk-strength: the SCLK pad strength. Possible values are: +0, 1, 2 and 3 as per the table below: + +VDDIO 1.8V 2.5V 3.3V +0 = Disable +1 = 1.66 mA 2.87 mA 4.02 mA +2 = 3.33 mA 5.74 mA 8.03 mA +3 = 4.99 mA 8.61 mA 12.05 mA + Example: sgtl5000: codec@a { |