diff options
author | Colin Cross <ccross@android.com> | 2010-07-09 18:13:52 -0400 |
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committer | Colin Cross <ccross@android.com> | 2010-10-21 21:11:41 -0400 |
commit | c5f04b8d10a73f2a016d6815d64dd5eebc734097 (patch) | |
tree | 54b6fd1ed295d7e9c5c85fce7c9767f1eced6569 /arch/Kconfig | |
parent | 460907bc26f5565aced3cf35a10e3579c671ef50 (diff) |
[ARM] tegra: pinmux: add safe values, move tegra2, add suspend
- the reset values for some pin groups in the tegra pin mux can result in
functional errors due to conflicting with actively-configured pin groups
muxing from the same controller. this change adds a known safe, non-
conflicting mux for every pin group, which can be used on platforms
where the pin group is not routed to any peripheral
- also add each pin group's I/O voltage rail, to enable platform code to
map from the pin groups used by each interface to the regulators used
for dynamic voltage control
- add routines to individually configure the tristate, pin mux and pull-
ups for a pingroup_config array, so that it is possible to program
individual values at run-time without modifying other values.
this allows driver power-management code to reprogram individual
interfaces into lower power states during idle / suspend, or to
reprogram the pin mux to support multiple physical busses per
internal controller (e.g., sharing a single I2C or SPI controller
across multiple pin groups)
- move chip-specific data like pingroups and drive-pingroups
out of the common code and into chip-specific code
- fix debug output for group with no pullups
- add a TEGRA_MUX_SAFE function. Setting a pingroup to TEGRA_MUX_SAFE
will automatically select a mux setting that is guaranteed not to
conflict with any of the hardware blocks.
Signed-off-by: Gary King <gking@nvidia.com>
Diffstat (limited to 'arch/Kconfig')
0 files changed, 0 insertions, 0 deletions