On 02/08/18 12:59, Venkat Reddy Talla wrote: > The IO pins of Tegra SoCs are grouped for common control > of IO interface like setting voltage signal levels and > power state of the interface. These groups are referred > to as IO pads.The power state and voltage control of IO pins > can be done at IO pads level. > > Tegra SoCs support powering down IO pads when they are > not used even in the active state of system. > This saves power from that IO interface. Also it supports > multiple voltage level in IO pins for interfacing on > some of pads. The IO pad voltage is automatically detected > till Tegra124, hence SW need not to configure this. > But from Tegra210, the automatic detection logic has been > removed, hence SW need to explicitly set the IO pad > voltage into IO pad configuration registers. > > Add support to configure the power state and voltage level > of the IO pads from client driver via pincontrol framework. > > Signed-off-by: Venkat Reddy Talla <vreddytalla@xxxxxxxxxx> This appears to be a duplicate effort of the following which we have been reviewing ... https://marc.info/?l=linux-tegra&m=153295930808915&w=2 Cheers Jon -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
