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dt-bindings: pinctrl-zynqmp: Add output-enable configuration 

Add 'output-enable' configuration parameter to the properties list.

Using these pinctrl properties observed hang issues with older Xilinx
ZynqMP Platform Management Firmware, hence reverted the patch previously.
Commit ff8356060e ("Revert "dt-bindings: pinctrl-zynqmp: Add
output-enable configuration"").

Support for configuring these properties added in Xilinx ZynqMP Platform
Management firmware(PMUFW) Configuration Set version 2.0. Linux firmware
driver checks if the configuration is supported by the PMUFW when it gets
request for TRISTATE configuration from pinctrl driver. If it supports,
then calls will be made otherwise it returns error.

Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230731095026.3766675-4-sai.krishna.potthuri@amd.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Sai Krishna Potthuri 2023-07-31 15:20:25 +05:30 committed by Linus Walleij
parent aa5ed7b3fb
commit 6cb1d2a158
1 changed files with 4 additions and 0 deletions
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4
Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.yaml
View File

@ -273,6 +273,10 @@ patternProperties:
slew-rate:
enum: [0, 1]
output-enable:
description:
This will internally disable the tri-state for MIO pins.
drive-strength:
description:
Selects the drive strength for MIO pins, in mA.