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ARM: dts: ux500: samsung-golden: Add Bluetooth 

samsung-golden uses a BCM4334 WiFi+BT combo chip.
The BT part is connected via UART and supported by the hci_bcm
driver in mainline.
Add the necessary device tree changes to make it load correctly.

It requires (seemingly) device-specific firmware that can be
extracted from the stock Android system used on samsung-golden:
  - /system/bin/bcm4334.hcd -> /lib/firmware/brcm/BCM4334B0.hcd

On my device, scanning for other Bluetooth devices works just fine,
but for some reason it keeps disconnecting immediately
when attempting to connect to an other device.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20191219202052.19039-9-stephan@gerhold.net
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Stephan Gerhold 2019-12-19 21:20:51 +01:00 committed by Linus Walleij
parent fbb7c4a13c
commit 224bf0fe72
1 changed files with 27 additions and 0 deletions
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27
arch/arm/boot/dts/ste-ux500-samsung-golden.dts
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@ -113,6 +113,19 @@ uart@80120000 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&u0_a_1_default>;
pinctrl-1 = <&u0_a_1_sleep>;
bluetooth {
compatible = "brcm,bcm4330-bt";
/* GPIO222 (BT_VREG_ON) */
shutdown-gpios = <&gpio6 30 GPIO_ACTIVE_HIGH>;
/* GPIO199 (BT_WAKE) */
device-wakeup-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
/* GPIO97 (BT_HOST_WAKE) */
host-wakeup-gpios = <&gpio3 1 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&bluetooth_default>;
};
};
/* GPF UART */
@ -396,6 +409,20 @@ golden_cfg1 {
};
};
bluetooth {
bluetooth_default: bluetooth_default {
golden_cfg1 {
pins = "GPIO199_AH23", /* BT_WAKE */
"GPIO222_AJ9"; /* BT_VREG_ON */
ste,config = <&gpio_out_lo>;
};
golden_cfg2 {
pins = "GPIO97_D9"; /* BT_HOST_WAKE */
ste,config = <&gpio_in_nopull>;
};
};
};
vibrator {
vibrator_default: vibrator_default {
golden_cfg1 {