| Message ID | 1639062321-18840-2-git-send-email-akhilrajeev@nvidia.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add SMBus features to Tegra I2C | expand |
On Thu, Dec 09, 2021 at 08:35:20PM +0530, Akhil R wrote: > Tegra I2C can use a gpio as an smbus-alert. Document the usage of > the same. > > Signed-off-by: Akhil R <akhilrajeev@nvidia.com> > --- > Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt > index 3f2f990..71ee79b 100644 > --- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt > +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt > @@ -70,6 +70,10 @@ Required properties: > - rx > - tx > > +optional properties: > +- smbalert-gpio: Must contain an entry for the gpio to be used as smbus alert. > + It will be used only if optional smbus-alert property is present. There's already a standard way to do this with interrupts. And GPIOs can be interrupts usually. > + > Example: > > i2c@7000c000 { > -- > 2.7.4 > >
diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt index 3f2f990..71ee79b 100644 --- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt @@ -70,6 +70,10 @@ Required properties: - rx - tx +optional properties: +- smbalert-gpio: Must contain an entry for the gpio to be used as smbus alert. + It will be used only if optional smbus-alert property is present. + Example: i2c@7000c000 {
Tegra I2C can use a gpio as an smbus-alert. Document the usage of the same. Signed-off-by: Akhil R <akhilrajeev@nvidia.com> --- Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt | 4 ++++ 1 file changed, 4 insertions(+)