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Subject[PATCH v2 1/2] dt-bindings: fpga: xilinx-slave-serial: add optional INIT_B GPIO
Date
The INIT_B is used by the 6 and 7 series to report the programming status,
providing more control and information about programming errors.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>

---

Changes in v2:
- rename init_b-gpios to init-b-gpios (Rob Herring suggested to not use '_'
in property names)
---
.../devicetree/bindings/fpga/xilinx-slave-serial.txt | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt b/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt
index 9f103f3872e8..5ef659c1394d 100644
--- a/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt
+++ b/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt
@@ -16,6 +16,10 @@ Required properties:
- prog_b-gpios: config pin (referred to as PROGRAM_B in the manual)
- done-gpios: config status pin (referred to as DONE in the manual)

+Optional properties:
+- init-b-gpios: initialization status and configuration error pin
+ (referred to as INIT_B in the manual)
+
Example for full FPGA configuration:

fpga-region0 {
@@ -40,7 +44,8 @@ Example for full FPGA configuration:
spi-max-frequency = <60000000>;
spi-cpha;
reg = <0>;
- done-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
prog_b-gpios = <&gpio0 29 GPIO_ACTIVE_LOW>;
+ init-b-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
+ done-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
};
};
--
2.27.0
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