On 2022-08-25 at 16:13:30 +0200, Johannes Zink wrote: > This commit adds a pin which initiates the FPGA programming sequence > once pulsed low. Why we don't have to use this pin before? Thanks, Yilun > > Signed-off-by: Johannes Zink <j.zink@xxxxxxxxxxxxxx> > --- > .../devicetree/bindings/fpga/lattice,machxo2-slave.yaml | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/devicetree/bindings/fpga/lattice,machxo2-slave.yaml b/Documentation/devicetree/bindings/fpga/lattice,machxo2-slave.yaml > index 78f0da8f772f..03dc134ec7b8 100644 > --- a/Documentation/devicetree/bindings/fpga/lattice,machxo2-slave.yaml > +++ b/Documentation/devicetree/bindings/fpga/lattice,machxo2-slave.yaml > @@ -26,6 +26,12 @@ properties: > enum: > - lattice,machxo2-slave-spi > > + program-gpios: > + maxItems: 1 > + description: | > + GPIO Output tied to the FPGA's n_program pin to initiate a > + programming sequence. This pin is active low. > + > lattice,erase-sram: > type: boolean > description: SRAM is to be erased during flash erase operation > @@ -57,5 +63,6 @@ examples: > reg = <0>; > lattice,erase-sram; > lattice,erase-feature-row; > + lattice,program-gpios = <&gpio1 2 GPIO_ACTIVE_LOW> > }; > }; > -- > 2.30.2 >
