From: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
To: linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
kernel@savoirfairelinux.com, robh@kernel.org, linux@roeck-us.net,
linus.walleij@linaro.org, shawnguo@kernel.org
Cc: fabio.estevam@nxp.com, mark@embeddedarm.com,
kris@embeddedarm.com,
Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
Subject: [PATCH v3 3/6] dt-bindings: bus: Add documentation for the Technologic Systems NBUS
Date: Fri, 5 May 2017 15:32:56 -0400 [thread overview]
Message-ID: <20170505193259.16517-4-sebastien.bourdelin@savoirfairelinux.com> (raw)
In-Reply-To: <20170505193259.16517-1-sebastien.bourdelin@savoirfairelinux.com>
Add binding documentation for the Technologic Systems NBUS that is used
to interface with peripherals in the FPGA of the TS-4600 SoM.
Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
---
Changes v2 -> v3:
- rebase on master
- fix typo (suggested by Rob Herring)
Changes v1 -> v2:
- rebase on master
- remove the simple-bus compatibility as the root node will now
populate child nodes (suggested by Rob Herring)
- use the ts vendor prefix for gpios (suggested by Rob Herring)
---
Documentation/devicetree/bindings/bus/ts-nbus.txt | 50 +++++++++++++++++++++++
1 file changed, 50 insertions(+)
create mode 100644 Documentation/devicetree/bindings/bus/ts-nbus.txt
diff --git a/Documentation/devicetree/bindings/bus/ts-nbus.txt b/Documentation/devicetree/bindings/bus/ts-nbus.txt
new file mode 100644
index 000000000000..905600adfb64
--- /dev/null
+++ b/Documentation/devicetree/bindings/bus/ts-nbus.txt
@@ -0,0 +1,50 @@
+Technologic Systems NBUS
+
+The NBUS is a bus used to interface with peripherals in the Technologic
+Systems FPGA on the TS-4600 SoM.
+
+Required properties :
+ - compatible : "technologic,ts-nbus"
+ - #address-cells : must be 1
+ - #size-cells : must be 0
+ - pwms : The PWM bound to the FPGA
+ - ts-data-gpios : The 8 GPIO pins connected to the data lines on the FPGA
+ - ts-csn-gpios : The GPIO pin connected to the csn line on the FPGA
+ - ts-txrx-gpios : The GPIO pin connected to the txrx line on the FPGA
+ - ts-strobe-gpios : The GPIO pin connected to the stobe line on the FPGA
+ - ts-ale-gpios : The GPIO pin connected to the ale line on the FPGA
+ - ts-rdy-gpios : The GPIO pin connected to the rdy line on the FPGA
+
+Child nodes:
+
+The NBUS node can contain zero or more child nodes representing peripherals
+on the bus.
+
+Example:
+
+ nbus {
+ compatible = "technologic,ts-nbus";
+ pinctrl-0 = <&nbus_pins>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pwms = <&pwm 2 83>;
+ ts-data-gpios = <&gpio0 0 GPIO_ACTIVE_HIGH
+ &gpio0 1 GPIO_ACTIVE_HIGH
+ &gpio0 2 GPIO_ACTIVE_HIGH
+ &gpio0 3 GPIO_ACTIVE_HIGH
+ &gpio0 4 GPIO_ACTIVE_HIGH
+ &gpio0 5 GPIO_ACTIVE_HIGH
+ &gpio0 6 GPIO_ACTIVE_HIGH
+ &gpio0 7 GPIO_ACTIVE_HIGH>;
+ ts-csn-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
+ ts-txrx-gpios = <&gpio0 24 GPIO_ACTIVE_HIGH>;
+ ts-strobe-gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>;
+ ts-ale-gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;
+ ts-rdy-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>;
+
+ watchdog@2a {
+ compatible = "...";
+
+ /* ... */
+ };
+ };
--
2.12.0
next prev parent reply other threads:[~2017-05-05 19:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-05 19:32 [PATCH v3 0/6] Add board support for TS-4600 Sebastien Bourdelin
2017-05-05 19:32 ` [PATCH v3 1/6] of: documentation: add bindings documentation " Sebastien Bourdelin
2017-05-05 19:32 ` [PATCH v3 2/6] ARM: dts: TS-4600: add basic device tree Sebastien Bourdelin
2017-05-05 19:32 ` Sebastien Bourdelin [this message]
2017-05-11 13:50 ` [PATCH v3 3/6] dt-bindings: bus: Add documentation for the Technologic Systems NBUS Linus Walleij
2017-05-12 15:17 ` Rob Herring
2017-05-05 19:32 ` [PATCH v3 4/6] bus: add driver " Sebastien Bourdelin
2017-05-11 13:56 ` Linus Walleij
2017-05-05 19:32 ` [PATCH v3 5/6] ARM: dts: TS-4600: add NBUS support Sebastien Bourdelin
2017-05-11 13:56 ` Linus Walleij
2017-05-05 19:32 ` [PATCH v3 6/6] watchdog: ts4600: add driver for TS-4600 watchdog Sebastien Bourdelin
2017-05-08 13:27 ` Rob Herring
2017-05-11 7:22 ` Shawn Guo
2017-05-14 14:39 ` Guenter Roeck
2017-05-15 2:00 ` Shawn Guo
2017-05-15 2:30 ` Guenter Roeck
2017-05-14 14:40 ` Guenter Roeck
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