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arm64: dts: qcom: sm7225-fairphone-fp4: Add Bluetooth

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The device has a WCN3988 chip for WiFi and Bluetooth. Configure the
Bluetooth node and enable the UART it is connected to, plus the
necessary pinctrl that has been borrowed with comments from
sc7280-idp.dtsi.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230421-fp4-bluetooth-v2-4-3de840d5483e@fairphone.com
This commit is contained in:
Luca Weiss 2023-05-12 15:58:26 +02:00 committed by Bjorn Andersson
parent b179f35b88
commit c4ef464b24
1 changed files with 103 additions and 0 deletions
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103
arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
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@ -31,6 +31,7 @@ / {
aliases {
serial0 = &uart9;
serial1 = &uart1;
};
chosen {
@ -524,6 +525,39 @@ adc-chan@644 {
};
};
&qup_uart1_cts {
/*
* Configure a bias-bus-hold on CTS to lower power
* usage when Bluetooth is turned off. Bus hold will
* maintain a low power state regardless of whether
* the Bluetooth module drives the pin in either
* direction or leaves the pin fully unpowered.
*/
bias-bus-hold;
};
&qup_uart1_rts {
/* We'll drive RTS, so no pull */
drive-strength = <2>;
bias-disable;
};
&qup_uart1_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;
};
&qup_uart1_tx {
/* We'll drive TX, so no pull */
drive-strength = <2>;
bias-disable;
};
&qupv3_id_0 {
status = "okay";
};
@ -561,6 +595,75 @@ &sdhc_2 {
&tlmm {
gpio-reserved-ranges = <13 4>, <56 2>;
qup_uart1_sleep_cts: qup-uart1-sleep-cts-state {
pins = "gpio61";
function = "gpio";
/*
* Configure a bias-bus-hold on CTS to lower power
* usage when Bluetooth is turned off. Bus hold will
* maintain a low power state regardless of whether
* the Bluetooth module drives the pin in either
* direction or leaves the pin fully unpowered.
*/
bias-bus-hold;
};
qup_uart1_sleep_rts: qup-uart1-sleep-rts-state {
pins = "gpio62";
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_uart1_sleep_rx: qup-uart1-sleep-rx-state {
pins = "gpio64";
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;
};
qup_uart1_sleep_tx: qup-uart1-sleep-tx-state {
pins = "gpio63";
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;
};
};
&uart1 {
/delete-property/ interrupts;
interrupts-extended = <&intc GIC_SPI 602 IRQ_TYPE_LEVEL_HIGH>,
<&tlmm 64 IRQ_TYPE_EDGE_FALLING>;
pinctrl-names = "default", "sleep";
pinctrl-1 = <&qup_uart1_sleep_cts>, <&qup_uart1_sleep_rts>, <&qup_uart1_sleep_tx>, <&qup_uart1_sleep_rx>;
status = "okay";
bluetooth {
compatible = "qcom,wcn3988-bt";
vddio-supply = <&vreg_l11a>;
vddxo-supply = <&vreg_l7a>;
vddrf-supply = <&vreg_l2e>;
vddch0-supply = <&vreg_l10e>;
swctrl-gpios = <&tlmm 69 GPIO_ACTIVE_HIGH>;
max-speed = <3200000>;
};
};
&uart9 {