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arm64: dts: qcom: sc7280: Configure uart7 to support bluetooth on sc7280-idp

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Add bluetooth uart pin configuration for sc7280-idp.

Signed-off-by: Rajesh Patil <rajpat@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1632399378-12229-7-git-send-email-rajpat@codeaurora.org
This commit is contained in:
Rajesh Patil
2021-09-23 17:46:16 +05:30
committed by Bjorn Andersson
parent 38cd93f413
commit e3bc6fec5a
1 changed files with 85 additions and 0 deletions
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85
arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
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@@ -322,6 +322,16 @@ &usb_2_hsphy {
vdda18-supply = <&vreg_l1c_1p8>;
};
&uart7 {
status = "okay";
/delete-property/interrupts;
interrupts-extended = <&intc GIC_SPI 608 IRQ_TYPE_LEVEL_HIGH>,
<&tlmm 31 IRQ_TYPE_EDGE_FALLING>;
pinctrl-names = "default", "sleep";
pinctrl-1 = <&qup_uart7_sleep_cts>, <&qup_uart7_sleep_rts>, <&qup_uart7_sleep_tx>, <&qup_uart7_sleep_rx>;
};
/* PINCTRL - additions to nodes defined in sc7280.dtsi */
&pm7325_gpios {
@@ -358,6 +368,81 @@ &qup_uart5_rx {
bias-pull-up;
};
&qup_uart7_cts {
/*
* Configure a pull-down on CTS to match the pull of
* the Bluetooth module.
*/
bias-pull-down;
};
&qup_uart7_rts {
/* We'll drive RTS, so no pull */
drive-strength = <2>;
bias-disable;
};
&qup_uart7_tx {
/* We'll drive TX, so no pull */
drive-strength = <2>;
bias-disable;
};
&qup_uart7_rx {
/*
* Configure a pull-up on RX. This is needed to avoid
* garbage data when the TX pin of the Bluetooth module is
* in tri-state (module powered off or not driving the
* signal yet).
*/
bias-pull-up;
};
&tlmm {
qup_uart7_sleep_cts: qup-uart7-sleep-cts {
pins = "gpio28";
function = "gpio";
/*
* Configure a pull-down on CTS to match the pull of
* the Bluetooth module.
*/
bias-pull-down;
};
qup_uart7_sleep_rts: qup-uart7-sleep-rts {
pins = "gpio29";
function = "gpio";
/*
* Configure pull-down on RTS. As RTS is active low
* signal, pull it low to indicate the BT SoC that it
* can wakeup the system anytime from suspend state by
* pulling RX low (by sending wakeup bytes).
*/
bias-pull-down;
};
qup_uart7_sleep_tx: qup-uart7-sleep-tx {
pins = "gpio30";
function = "gpio";
/*
* Configure pull-up on TX when it isn't actively driven
* to prevent BT SoC from receiving garbage during sleep.
*/
bias-pull-up;
};
qup_uart7_sleep_rx: qup-uart7-sleep-rx {
pins = "gpio31";
function = "gpio";
/*
* Configure a pull-up on RX. This is needed to avoid
* garbage data when the TX pin of the Bluetooth module
* is floating which may cause spurious wakeups.
*/
bias-pull-up;
};
};
&sdc1_on {
clk {
bias-disable;