linux-kernel - [PATCH v2 1/2] dt-bindings: fpga: xilinx-slave-serial: add optional INIT

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Date:   Mon, 22 Jun 2020 15:37:22 +0200
From:   Luca Ceresoli <luca@...aceresoli.net>
To:     linux-fpga@...r.kernel.org
Cc:     Luca Ceresoli <luca@...aceresoli.net>,
        Moritz Fischer <mdf@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Anatolij Gustschin <agust@...x.de>
Subject: [PATCH v2 1/2] dt-bindings: fpga: xilinx-slave-serial: add optional INIT_B GPIO

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@...aceresoli.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