From: Ivan Bornyakov <i.bornyakov@metrotek.ru>
To: mdf@kernel.org, hao.wu@intel.com, yilun.xu@intel.com,
trix@redhat.com, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org
Cc: Ivan Bornyakov <i.bornyakov@metrotek.ru>,
linux-fpga@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, system@metrotek.ru
Subject: [PATCH 2/2] dt-bindings: fpga: add binding doc for ecp5-spi fpga mgr
Date: Thu, 14 Jul 2022 15:26:57 +0300 [thread overview]
Message-ID: <20220714122657.17972-3-i.bornyakov@metrotek.ru> (raw)
In-Reply-To: <20220714122657.17972-1-i.bornyakov@metrotek.ru>
Add Device Tree Binding doc for Lattice ECP5 FPGA manager using slave
SPI to load .bit formatted uncompressed bitstream image.
Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
---
.../fpga/lattice,ecp5-spi-fpga-mgr.yaml | 71 +++++++++++++++++++
1 file changed, 71 insertions(+)
create mode 100644 Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml
diff --git a/Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml b/Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml
new file mode 100644
index 000000000000..79868f9c84e2
--- /dev/null
+++ b/Documentation/devicetree/bindings/fpga/lattice,ecp5-spi-fpga-mgr.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fpga/lattice,ecp5-spi-fpga-mgr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lattice ECP5 FPGA manager.
+
+maintainers:
+ - Ivan Bornyakov <i.bornyakov@metrotek.ru>
+
+description:
+ Device Tree Bindings for Lattice ECP5 FPGA Manager using slave SPI to
+ load the uncompressed bitstream in .bit format.
+
+properties:
+ compatible:
+ enum:
+ - lattice,ecp5-spi-fpga-mgr
+
+ reg:
+ description: SPI chip select
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 60000000
+
+ program-gpios:
+ description:
+ A GPIO line connected to PROGRAMN (active low) pin of the device.
+ Initiates configuration sequence.
+ maxItems: 1
+
+ init-gpios:
+ description:
+ A GPIO line connected to INITN (active low) pin of the device.
+ Indicates the FPGA is ready to be configured.
+ maxItems: 1
+
+ done-gpios:
+ description:
+ A GPIO line connected to DONE (active high) pin of the device.
+ Indicates that the configuration sequence is complete.
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - program-gpios
+ - init-gpios
+ - done-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ fpga_mgr@0 {
+ compatible = "lattice,ecp5-spi-fpga-mgr";
+ spi-max-frequency = <20000000>;
+ reg = <0>;
+ program-gpios = <&gpio3 4 GPIO_ACTIVE_LOW>;
+ init-gpios = <&gpio3 3 GPIO_ACTIVE_LOW>;
+ done-gpios = <&gpio3 2 GPIO_ACTIVE_HIGH>;
+ };
+ };
--
2.37.0
next prev parent reply other threads:[~2022-07-14 12:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-14 12:26 [PATCH 0/2] Lattice ECP5 FPGA manager Ivan Bornyakov
2022-07-14 12:26 ` [PATCH 1/2] fpga: ecp5-spi: add " Ivan Bornyakov
2022-07-14 12:26 ` Ivan Bornyakov [this message]
2022-07-15 9:33 ` [PATCH 2/2] dt-bindings: fpga: add binding doc for ecp5-spi fpga mgr Krzysztof Kozlowski
2022-07-15 10:03 ` Ivan Bornyakov
2022-07-18 13:06 ` Krzysztof Kozlowski
2022-07-18 13:46 ` Ivan Bornyakov
2022-07-18 14:41 ` Krzysztof Kozlowski
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