On Mon, Jan 18, 2016 at 11:23:16AM -0700, Stephen Warren wrote: > From: Stephen Warren <swar...@nvidia.com> > > The PMIC is configured such that its GPIOs have the correct configuration > at power-up, so no programming is required. > > In fact, the current programming is actively wrong, since: > > (a) the AS3722 driver configures the GPIO to be an output before setting > its output value, which causes a 0v glitch on the output. > > (b) the AS3722 driver configures the GPIO to drive a high voltage from its > VSUP_GPIO power source rather than its VDD_GPIO_LV power source, so the pin > drives 5V not 1.8V as desired. > > Solve these problems by removing the code which configures the PMIC GPIOs. > > Note that this patch was tested directly on top of v2016.01; since then, > commit 96350f729c42 "dm: tegra: net: Convert tegra boards to driver model > for Ethernet" prevents PCIe from being initialized. Alternatively, simply > revert that commit to get PCIe Ethernet working again, then apply this > patch to test. > > Signed-off-by: Stephen Warren <swar...@nvidia.com> > --- > board/nvidia/jetson-tk1/jetson-tk1.c | 13 ------------- > 1 file changed, 13 deletions(-)
Looks reasonable to me: Acked-by: Thierry Reding <tred...@nvidia.com>
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