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MIPS: DTS: CI20: Enable support for WiFi / Bluetooth 

Wire the WiFi/Bluetooth chip properly in the Device Tree.

- Provide it with the correct regulators and clocks;
- Change the MMC I/O bus to 1.8V which seems to be enough;
- Change the MMC I/O bus frequency to 25 MHz as 50 MHz causes errors;
- Fix the Bluetooth powerdown GPIO being inverted and add reset GPIO;
- Convert host-wakeup-gpios to IRQ.

With these changes, the WiFi works properly with the latest firmware
provided by linux-firmware. The Bluetooth does not work very well here,
as I cannot get my wireless keyboard to pair; but it does detect it, and
it does see the key presses when I type the pairing code.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Paul Cercueil 2023-06-04 16:56:40 +02:00 committed by Thomas Bogendoerfer
parent 868b70b9e6
commit c9f4b25272
1 changed files with 73 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

88
arch/mips/boot/dts/ingenic/ci20.dts
View File

@ -97,10 +97,15 @@
gpios = <&gpe 3 GPIO_ACTIVE_LOW>;
};
wlan0_power: fixedregulator-1 {
bt_power: fixedregulator-1 {
compatible = "regulator-fixed";
regulator-name = "wlan0_power";
regulator-name = "bt_power";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-settling-time-us = <1400>;
vin-supply = <&vcc_50>;
gpio = <&gpb 19 0>;
enable-active-high;
@ -116,6 +121,40 @@
gpio = <&gpf 15 0>;
enable-active-high;
};
wifi_power: fixedregulator-4 {
compatible = "regulator-fixed";
regulator-name = "wifi_power";
/*
* Technically it's 5V, the WiFi chip has its own internal
* regulators; but the MMC/SD subsystem won't accept such a
* value.
*/
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-settling-time-us = <150000>;
vin-supply = <&bt_power>;
};
vcc_33v: fixedregulator-5 {
compatible = "regulator-fixed";
regulator-name = "vcc_33v";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
wifi_pwrseq: pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&gpf 7 GPIO_ACTIVE_LOW>;
clocks = <&rtc_dev>;
clock-names = "ext_clock";
};
};
&ext {
@ -161,24 +200,33 @@
pinctrl-0 = <&pins_mmc0>;
cd-gpios = <&gpf 20 GPIO_ACTIVE_LOW>;
vmmc-supply = <&vcc_33v>;
vqmmc-supply = <&vcc_33v>;
};
&mmc1 {
status = "okay";
bus-width = <4>;
max-frequency = <50000000>;
max-frequency = <25000000>;
mmc-pwrseq = <&wifi_pwrseq>;
vmmc-supply = <&wifi_power>;
vqmmc-supply = <&wifi_io>;
non-removable;
pinctrl-names = "default";
pinctrl-0 = <&pins_mmc1>;
brcmf: wifi@1 {
/* reg = <4>;*/
compatible = "brcm,bcm4330-fmac";
vcc-supply = <&wlan0_power>;
device-wakeup-gpios = <&gpd 9 GPIO_ACTIVE_HIGH>;
shutdown-gpios = <&gpf 7 GPIO_ACTIVE_LOW>;
#address-cells = <1>;
#size-cells = <0>;
wifi@1 {
compatible = "brcm,bcm4329-fmac";
reg = <1>;
interrupt-parent = <&gpd>;
interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
interrupt-names = "host-wake";
};
};
@ -205,11 +253,20 @@
bluetooth {
compatible = "brcm,bcm4330-bt";
reset-gpios = <&gpf 8 GPIO_ACTIVE_HIGH>;
vcc-supply = <&wlan0_power>;
vbat-supply = <&bt_power>;
vddio-supply = <&wifi_io>;
interrupt-parent = <&gpf>;
interrupts = <6 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "host-wakeup";
clocks = <&rtc_dev>;
clock-names = "lpo";
reset-gpios = <&gpf 8 GPIO_ACTIVE_LOW>;
device-wakeup-gpios = <&gpf 5 GPIO_ACTIVE_HIGH>;
host-wakeup-gpios = <&gpf 6 GPIO_ACTIVE_HIGH>;
shutdown-gpios = <&gpf 4 GPIO_ACTIVE_LOW>;
shutdown-gpios = <&gpf 4 GPIO_ACTIVE_HIGH>;
};
};
@ -270,8 +327,9 @@
regulator-always-on;
};
wifi_io: LDO6 {
regulator-min-microvolt = <2500000>;
regulator-max-microvolt = <2500000>;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-settling-time-us = <150000>;
inl-supply = <&vcc_33v>;
};
cim_io_28: LDO7 {