[PATCH] dt-bindings: pinctrl: Document the i.MX50 IOMUXC binding
From: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Date: 2019-01-29 16:55:55
Also in:
linux-gpio, lkml
Subsystem:
open firmware and flattened device tree bindings, pin control subsystem, pin controller - freescale, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Walleij, Dong Aisheng, Fabio Estevam, Frank Li, Jacky Bai, Linus Torvalds
AFAICS from the i.MX50 Reference Manual, the i.MX50 IOMUXC works the same as the one in i.MX51, so I copied fsl,imx51-pinctrl.txt and changed the text to imx50. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Cc: Dong Aisheng <redacted> Cc: Shawn Guo <redacted> --- .../bindings/pinctrl/fsl,imx50-pinctrl.txt | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx50-pinctrl.txt
diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx50-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,imx50-pinctrl.txt
new file mode 100644
index 000000000000..6da01d619d33
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx50-pinctrl.txt@@ -0,0 +1,32 @@ +* Freescale IMX50 IOMUX Controller + +Please refer to fsl,imx-pinctrl.txt in this directory for common binding part +and usage. + +Required properties: +- compatible: "fsl,imx50-iomuxc" +- fsl,pins: two integers array, represents a group of pins mux and config + setting. The format is fsl,pins = <PIN_FUNC_ID CONFIG>, PIN_FUNC_ID is a + pin working on a specific function, CONFIG is the pad setting value like + pull-up for this pin. Please refer to imx50 datasheet for the valid pad + config settings. + +CONFIG bits definition: +PAD_CTL_HVE (1 << 13) +PAD_CTL_HYS (1 << 8) +PAD_CTL_PKE (1 << 7) +PAD_CTL_PUE (1 << 6) +PAD_CTL_PUS_100K_DOWN (0 << 4) +PAD_CTL_PUS_47K_UP (1 << 4) +PAD_CTL_PUS_100K_UP (2 << 4) +PAD_CTL_PUS_22K_UP (3 << 4) +PAD_CTL_ODE (1 << 3) +PAD_CTL_DSE_LOW (0 << 1) +PAD_CTL_DSE_MED (1 << 1) +PAD_CTL_DSE_HIGH (2 << 1) +PAD_CTL_DSE_MAX (3 << 1) +PAD_CTL_SRE_FAST (1 << 0) +PAD_CTL_SRE_SLOW (0 << 0) + +Refer to imx50-pinfunc.h in device tree source folder for all available +imx50 PIN_FUNC_ID.
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2.20.1