diff options
author | Paul Cercueil <paul@crapouillou.net> | 2023-06-04 17:56:40 +0300 |
---|---|---|
committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2023-06-09 10:55:38 +0300 |
commit | c9f4b25272843bcf6a86809915ccfb4fd7436c91 (patch) | |
tree | 9abc95e42c838b2bf4b1f6493021c21d767539d7 /arch/mips/boot | |
parent | 868b70b9e6bd8d211cb846ad332c777591b68c8f (diff) | |
download | linux-c9f4b25272843bcf6a86809915ccfb4fd7436c91.tar.xz |
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>
Diffstat (limited to 'arch/mips/boot')
-rw-r--r-- | arch/mips/boot/dts/ingenic/ci20.dts | 88 |
1 files 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 @@ 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 { |