Messages in this thread Patch in this message | | | From | Drew Fustini <> | Subject | [PATCH] ARM: dts: document pinctrl-single,pins when #pinctrl-cells = 2 | Date | Mon, 14 Sep 2020 12:43:53 +0200 |
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Document the values in pinctrl-single,pins when #pinctrl-cells = <2>
Fixes: 27c90e5e48d0 ("ARM: dts: am33xx-l4: change #pinctrl-cells from 1 to 2") Reported-by: Trent Piepho <tpiepho@gmail.com> Link: https://lore.kernel.org/linux-omap/3139716.CMS8C0sQ7x@zen.local/ Signed-off-by: Drew Fustini <drew@beagleboard.org> --- .../bindings/pinctrl/pinctrl-single.txt | 20 ++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt index ba428d345a56..ef560afdd52e 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt @@ -96,16 +96,22 @@ pinctrl-single,bit-per-mux is set), and uses the common pinctrl bindings as specified in the pinctrl-bindings.txt document in this directory. The pin configuration nodes for pinctrl-single are specified as pinctrl -register offset and value pairs using pinctrl-single,pins. Only the bits -specified in pinctrl-single,function-mask are updated. For example, setting -a pin for a device could be done with: +register offset and values using pinctrl-single,pins. Only the bits specified +in pinctrl-single,function-mask are updated. + +When #pinctrl-cells = 1, then setting a pin for a device could be done with: pinctrl-single,pins = <0xdc 0x118>; -Where 0xdc is the offset from the pinctrl register base address for the -device pinctrl register, and 0x118 contains the desired value of the -pinctrl register. See the device example and static board pins example -below for more information. +Where 0xdc is the offset from the pinctrl register base address for the device +pinctrl register, and 0x118 contains the desired value of the pinctrl register. + +When #pinctrl-cells = 2, then setting a pin for a device could be done with: + + pinctrl-single,pins = <0xdc 0x30 0x07>; + +Where 0x30 is the pin configuration value and 0x07 is the pin mux mode value. +See the device example and static board pins example below for more information. In case when one register changes more than one pin's mux the pinctrl-single,bits need to be used which takes three parameters: -- 2.25.1
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