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From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: linus.walleij@linaro.org, robh+dt@kernel.org
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	haitao.suo@bitmain.com, darren.tsao@bitmain.com,
	linux-gpio@vger.kernel.org, alec.lin@bitmain.com,
	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH 4/5] dt-bindings: pinctrl: Document pinconf bindings for BM1880 SoC
Date: Mon, 20 May 2019 14:01:00 +0530	[thread overview]
Message-ID: <20190520083101.10229-5-manivannan.sadhasivam@linaro.org> (raw)
In-Reply-To: <20190520083101.10229-1-manivannan.sadhasivam@linaro.org>

Document pinconf bindings for Bitmain BM1880 SoC.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 .../pinctrl/bitmain,bm1880-pinctrl.txt        | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
index cc9a89aa4170..4eb089bcb5f3 100644
--- a/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
@@ -14,7 +14,8 @@ phrase "pin configuration node".
 The pin configuration nodes act as a container for an arbitrary number of
 subnodes. Each of these subnodes represents some desired configuration for a
 pin, a group, or a list of pins or groups. This configuration for BM1880 SoC
-includes only pinmux as there is no pinconf support available in SoC.
+includes pinmux and various pin configuration parameters, such as pull-up,
+slew rate etc...
 
 Each configuration node can consist of multiple nodes describing the pinmux
 options. The name of each subnode is not important; all subnodes should be
@@ -84,6 +85,22 @@ Required Properties:
                   gpio66, gpio67, eth1, i2s0, i2s0_mclkin, i2s1, i2s1_mclkin,
                   spi0
 
+Optional Properties:
+
+- bias-disable:  No arguments. Disable pin bias.
+- bias-pull-down: No arguments. The specified pins should be configured as
+                  pull down.
+- bias-pull-up:   No arguments. The specified pins should be configured as
+                  pull up.
+- input-schmitt-enable: No arguments: Enable schmitt trigger for the specified
+                  pins
+- input-schmitt-disable: No arguments: Disable schmitt trigger for the specified
+                  pins
+- slew-rate:      Integer. Sets slew rate for the specified pins.
+                  Valid values are:
+                  <0>  - Slow
+                  <1>  - Fast
+
 Example:
         pinctrl: pinctrl@400 {
                 compatible = "bitmain,bm1880-pinctrl";
-- 
2.17.1


  parent reply	other threads:[~2019-05-20  8:31 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-20  8:30 [PATCH 0/5] Add pinconf support " Manivannan Sadhasivam
2019-05-20  8:30 ` [PATCH 1/5] dt-bindings: pinctrl: Modify pinctrl memory map Manivannan Sadhasivam
2019-05-24 11:51   ` Linus Walleij
2019-05-20  8:30 ` [PATCH 2/5] arm64: dts: bitmain: Modify pin controller " Manivannan Sadhasivam
2019-05-24 11:51   ` Linus Walleij
2019-05-20  8:30 ` [PATCH 3/5] pinctrl: Rework the pinmux handling for BM1880 SoC Manivannan Sadhasivam
2019-05-24 11:52   ` Linus Walleij
2019-05-20  8:31 ` Manivannan Sadhasivam [this message]
2019-05-24 11:53   ` [PATCH 4/5] dt-bindings: pinctrl: Document pinconf bindings " Linus Walleij
2019-05-20  8:31 ` [PATCH 5/5] pinctrl: Add pinconf support " Manivannan Sadhasivam
2019-05-24 11:54   ` Linus Walleij

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