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@xxxxxxxxxxxxxxx>
---
arch/mips/boot/dts/ingenic/ci20.dts | 88 ++++++++++++++++++++++++-----
1 file changed, 73 insertions(+), 15 deletions(-)
diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index bdbd064c90e1..cec0caa2350c 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -97,10 +97,15 @@ ir: ir {
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 @@ otg_power: fixedregulator-2 {
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 @@ &mmc0 {
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 @@ &uart2 {
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 @@ vcc_25: LDO5 {
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 {
--
2.39.2
