x86: Update x86-pinctrl driver device-tree-bindings doc
This updates the device-tree-bindings doc for x86-pinctrl driver:
- clarify "gpio-offset" is required only when "mode-gpio" is set
- correct property name "pull-strength"
- use tab instead of space at several places
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/device-tree-bindings/gpio/intel,x86-pinctrl.txt b/doc/device-tree-bindings/gpio/intel,x86-pinctrl.txt
index 22d3bec..8c3a84c 100644
--- a/doc/device-tree-bindings/gpio/intel,x86-pinctrl.txt
+++ b/doc/device-tree-bindings/gpio/intel,x86-pinctrl.txt
@@ -9,7 +9,7 @@
Pin nodes must be children of the pinctrl master node and can
contain the following properties:
- pad-offset - (required) offset in the IOBASE for the pin to configure
-- gpio-offset - (required) 2 cells
+- gpio-offset - (required only when 'mode-gpio' is set) 2 cells
- offset in the GPIOBASE for the pin to configure
- the bit shift in this register (4 = bit 4)
- mode-gpio - (optional) standalone property to force the pin into GPIO mode
@@ -18,16 +18,16 @@
in case of 'mode-gpio' property set:
- output-value - (optional) this set the default output value of the GPIO
- direction - (optional) this set the direction of the gpio
-- pull-str - (optional) this set the pull strength of the pin
+- pull-strength - (optional) this set the pull strength of the pin
- pull-assign - (optional) this set the pull assignement (up/down) of the pin
-- invert - (optional) this input pin is inverted
+- invert - (optional) this input pin is inverted
Example:
pin_usb_host_en0@0 {
- gpio-offset = <0x80 8>;
- pad-offset = <0x260>;
- mode-gpio;
- output-value = <1>;
- direction = <PIN_OUTPUT>;
+ gpio-offset = <0x80 8>;
+ pad-offset = <0x260>;
+ mode-gpio;
+ output-value = <1>;
+ direction = <PIN_OUTPUT>;
};