[PATCH 5.10.y-cip 01/27] dt-bindings: pincfg-node: Add "output-impedance-ohms" property

Lad Prabhakar

commit 7388fa8acfce2c3b41babc53c3f3d0b247b098af upstream.

On RZ/G2L SoC for Group-B pins, output impedance can be configured. This
patch documents "output-impedance-ohms" property in pincfg-node.yaml so
that other platforms requiring such feature can make use of this property.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...>
Reviewed-by: Biju Das <biju.das.jz@...>
Acked-by: Rob Herring <robh@...>
Reviewed-by: Linus Walleij <linus.walleij@...>
Link: https://lore.kernel.org/r/20211027134509.5036-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@...>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...>
Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml | 3 +++
1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml b/Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml
index 71ed0a9def84..4b22a9e3a447 100644
--- a/Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/pincfg-node.yaml
@@ -114,6 +114,9 @@ properties:
description: enable output on a pin without actively driving it
(such as enabling an output buffer)

+ output-impedance-ohms:
+ description: set the output impedance of a pin to at most X ohms
type: boolean
description: set the pin to output mode with low level

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