]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
ASoC: sgtl5000: add delay before first I2C access
authorEric Nelson <eric.nelson@boundarydevices.com>
Fri, 30 Jan 2015 21:07:55 +0000 (14:07 -0700)
committerMark Brown <broonie@kernel.org>
Tue, 3 Feb 2015 13:08:41 +0000 (13:08 +0000)
commit58cc9c9a175885bbf6bae3acf18233d0a8229a84
tree4d65ef4a48db605d32b2dc4013e6236a59b1ba5f
parent9ee802ec5b1ae0ee468b6acf1bf489347997893b
ASoC: sgtl5000: add delay before first I2C access

To quote from section 1.3.1 of the data sheet:
The SGTL5000 has an internal reset that is deasserted
8 SYS_MCLK cycles after all power rails have been brought
up. After this time, communication can start

...
1.0us represents 8 SYS_MCLK cycles at the minimum 8.0 MHz SYS_MCLK.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
sound/soc/codecs/sgtl5000.c