Searched hist:"21 b4991051780b49b217c363f79366ed94c3b4b7" (Results 1 – 2 of 2) sorted by relevance
| /linux/include/soc/tegra/ |
| H A D | pmc.h | diff 21b4991051780b49b217c363f79366ed94c3b4b7 Mon Oct 10 15:14:34 CEST 2016 Laxman Dewangan <ldewangan@nvidia.com> soc/tegra: pmc: Add I/O pad voltage support
I/O pins on Tegra SoCs are grouped into so-called I/O pads. Each such
pad can be used to control the common voltage signal level and power
state of the pins in the given pad.
I/O pads can be powered down even if the system is active, which can
save power from that I/O interface. For SoC generations prior to
Tegra124 the I/O pad voltage is automatically detected and hence the
system software doesn't need to configure it. However, starting with
Tegra210 the detection logic has been removed, so explicit control of
the I/O pad voltage by system software is required.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
|
| /linux/drivers/soc/tegra/ |
| H A D | pmc.c | diff 21b4991051780b49b217c363f79366ed94c3b4b7 Mon Oct 10 15:14:34 CEST 2016 Laxman Dewangan <ldewangan@nvidia.com> soc/tegra: pmc: Add I/O pad voltage support
I/O pins on Tegra SoCs are grouped into so-called I/O pads. Each such
pad can be used to control the common voltage signal level and power
state of the pins in the given pad.
I/O pads can be powered down even if the system is active, which can
save power from that I/O interface. For SoC generations prior to
Tegra124 the I/O pad voltage is automatically detected and hence the
system software doesn't need to configure it. However, starting with
Tegra210 the detection logic has been removed, so explicit control of
the I/O pad voltage by system software is required.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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