Re: [PATCH 7/7] arm64: dts: broadcom: bcm2712: Add UARTA controller node.
From: Stefan Wahren <wahrenst@gmx.net>
Date: 2024-08-02 19:12:29
Also in:
linux-arm-kernel, linux-gpio
Hi Ivan, Am 31.07.24 um 08:28 schrieb Ivan T. Ivanov:
quoted hunk ↗ jump to hunk
On RPi5 device Bluetooth chips is connected to UARTA port. Add Bluetooth chips and related pin definitions. With this and firmware already provided by distributions, at least on openSUSE Tumbleweed, this is sufficient to make Bluetooth operational on RPi5 \o/. Signed-off-by: Ivan T. Ivanov <redacted> --- .../boot/dts/broadcom/bcm2712-rpi-5-b.dts | 45 +++++++++++++++++++ arch/arm64/boot/dts/broadcom/bcm2712.dtsi | 11 +++++ 2 files changed, 56 insertions(+)diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts index b6bfe0abb774..a557cbd8ba17 100644 --- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts +++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts@@ -133,11 +133,39 @@ wl_on_pins: wl-on-pins { pins = "gpio28"; }; + bt_shutdown_pins: bt-shutdown-pins { + function = "gpio"; + pins = "gpio29"; + }; + emmc_sd_pulls: emmc-sd-pulls { pins = "emmc_cmd", "emmc_dat0", "emmc_dat1", "emmc_dat2", "emmc_dat3"; bias-pull-up; }; + uarta_24_pins: uarta-24-pins { + pin-rts { + function = "uart0"; + pins = "gpio24"; + bias-disable; + }; + pin-cts { + function = "uart0"; + pins = "gpio25"; + bias-pull-up; + }; + pin-txd { + function = "uart0"; + pins = "gpio26"; + bias-disable; + }; + pin-rxd { + function = "uart0"; + pins = "gpio27"; + bias-pull-up; + }; + }; + sdio2_30_pins: sdio2-30-pins { pin-clk { function = "sd2";@@ -156,3 +184,20 @@ pins-dat { }; }; }; + +/* uarta communicates with the BT module */ +&uarta { + uart-has-rtscts; + auto-flow-control; + status = "okay"; + clock-frequency = <96000000>; + pinctrl-0 = <&uarta_24_pins &bt_shutdown_pins>; + pinctrl-names = "default";
Please add status here
+
+ bluetooth: bluetooth {
+ compatible = "brcm,bcm43438-bt";
+ max-speed = <3000000>;
+ shutdown-gpios = <&gio 29 GPIO_ACTIVE_HIGH>;
+ local-bd-address = [ 00 00 00 00 00 00 ];Can we drop this? Thanks
quoted hunk ↗ jump to hunk
+ }; +};diff --git a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi index 3c0663dc6712..e972f94d6828 100644 --- a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi@@ -305,6 +305,17 @@ gio: gpio@7d508500 { brcm,gpio-direct; }; + uarta: serial@7d50c000 { + compatible = "brcm,bcm7271-uart"; + reg = <0x7d50c000 0x20>; + reg-names = "uart"; + reg-shift = <2>; + reg-io-width = <4>; + interrupts = <GIC_SPI 276 IRQ_TYPE_LEVEL_HIGH>; + skip-init; + status = "disabled"; + }; + pinctrl_aon: pinctrl@7d510700 { compatible = "brcm,bcm2712-aon-pinctrl"; reg = <0x7d510700 0x20>;