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arm64: dts: qcom: sc7280-idp: Configure CTS pin to bias-bus-hold for bluetooth
WLAN rail was leaking power during RBSC/sleep even after turning BT off. Change active and sleep pinctrl configurations to handle same. Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@quicinc.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/1650556567-4995-2-git-send-email-quic_vnivarth@quicinc.com
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@ -408,10 +408,13 @@
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&qup_uart7_cts {
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/*
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* Configure a pull-down on CTS to match the pull of
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* the Bluetooth module.
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* Configure a bias-bus-hold on CTS to lower power
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* usage when Bluetooth is turned off. Bus hold will
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* maintain a low power state regardless of whether
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* the Bluetooth module drives the pin in either
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* direction or leaves the pin fully unpowered.
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*/
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bias-pull-down;
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bias-bus-hold;
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};
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&qup_uart7_rts {
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@ -503,10 +506,13 @@
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pins = "gpio28";
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function = "gpio";
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/*
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* Configure a pull-down on CTS to match the pull of
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* the Bluetooth module.
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* Configure a bias-bus-hold on CTS to lower power
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* usage when Bluetooth is turned off. Bus hold will
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* maintain a low power state regardless of whether
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* the Bluetooth module drives the pin in either
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* direction or leaves the pin fully unpowered.
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*/
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bias-pull-down;
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bias-bus-hold;
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};
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qup_uart7_sleep_rts: qup-uart7-sleep-rts {
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