On Fri, Oct 11, 2013 at 04:37:35PM -0600, Stephen Warren wrote:
> On 10/07/2013 02:34 AM, Thierry Reding wrote:
> > This driver adds support to perform calibration of the MIPI pads for CSI
> > and DSI.
>
> > diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c
>
> > +int tegra_mipi_calibrate(struct device *device)
> ...
> > + err = of_parse_phandle_with_args(device->of_node, "calibrate",
> > + "#calibrate-cells", 0, &args);
> ...
> > +static struct of_device_id tegra_mipi_of_match[] = {
> > + { .compatible = "nvidia,tegra114-mipi", },
>
> Is the DT binding for that compatible value documented anywhere? I'm not
> sure what #calibrate-cells means; it doesn't seem to be used...
I forgot to add a binding document, but I've complemented my local patch
series with one. The #calibrate-cells defines the number of cells used
for the specifier and should be 1. I suspect that we'll never get to
have more than 32 pads that can be calibrated, but perhaps at some point
data other than a bitmask of the pads will be needed.
Thierry
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