Messages in this thread Patch in this message | | | From | Douglas Anderson <> | Subject | [PATCH 06/14] dt-bindings: pinctrl: qcom: tlmm should use output-disable, not input-enable | Date | Thu, 23 Mar 2023 10:30:10 -0700 |
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As evidenced by the Qualcomm TLMM Linux driver, the TLMM IP block in Qualcomm SoCs has a bit to enable/disable the output for a pin that's configured as a GPIO but _not_ a bit to enable/disable an input buffer. Current device trees that are specifying "input-enable" for pins managed by TLMM are either doing so needlessly or are using it to mean "output-disable".
Presumably the current convention of using "input-enable" to mean "output-disable" stems from the fact that "output-disable" is a "new" property from 2017. It was introduced in commit 425562429d4f ("pinctrl: generic: Add output-enable property"). The "input-enable" handling in Qualcomm drivers is from 2015 introduced in commit 407f5e392f9c ("pinctrl: qcom: handle input-enable pinconf property").
Given that there's no other use for "input-enable" for TLMM, we can still handle old device trees in code, but let's encourage people to move to the proper / documented property by updating the bindings.
Signed-off-by: Douglas Anderson <dianders@chromium.org> ---
.../devicetree/bindings/pinctrl/qcom,tlmm-common.yaml | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml index cb5ba1bd6f8d..5a815c199642 100644 --- a/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml +++ b/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml @@ -75,7 +75,8 @@ $defs: bias-pull-down: true bias-pull-up: true bias-disable: true - input-enable: true + input-enable: false + output-disable: true output-high: true output-low: true -- 2.40.0.348.gf938b09366-goog
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