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authorUlf Hansson <ulf.hansson@linaro.org>2017-05-03 16:11:33 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2017-05-23 14:18:10 +0200
commitea452678734eb782126f999bf5c4fb3e71d3b196 (patch)
tree6ceb4a177257a8bb71500a7ec7f9365a89705a4e /arch
parent76f1dfb687150e852aa74573962cfc158a9570cc (diff)
downloadlinux-ea452678734eb782126f999bf5c4fb3e71d3b196.tar.bz2
arm64: dts: hikey: Fix WiFi support
The description of the connection between the dwmmc (SDIO) controller and the Wifi chip, which is attached to the SDIO bus is wrong. Currently the SDIO card can't be detected and thus the Wifi doesn't work. Let's fix this by assigning the correct vmmc supply, which is the always on regulator VDD_3V3 and remove the WLAN enable regulator altogether. Then to properly deal with the power on/off sequence, add a mmc-pwrseq node to describe the resources needed to detect the SDIO card. Except for the WLAN enable GPIO and its corresponding assert/de-assert delays, the mmc-pwrseq node also contains a handle to a clock provided by the hi655x pmic. This clock is also needed to be able to turn on the WiFi chip. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts26
1 files changed, 11 insertions, 15 deletions
diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index 5132d8ed4664..49f6a6242cf9 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
@@ -111,6 +111,15 @@
vin-supply = <&reg_sys_5v>;
};
+ wl1835_pwrseq: wl1835-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ /* WLAN_EN GPIO */
+ reset-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
+ clocks = <&pmic>;
+ clock-names = "ext_clock";
+ power-off-delay-us = <10>;
+ };
+
soc {
spi0: spi@f7106000 {
status = "ok";
@@ -307,11 +316,10 @@
};
dwmmc_2: dwmmc2@f723f000 {
- broken-cd;
bus-width = <0x4>;
non-removable;
- /* WL_EN */
- vmmc-supply = <&wlan_en_reg>;
+ vmmc-supply = <&reg_vdd_3v3>;
+ mmc-pwrseq = <&wl1835_pwrseq>;
#address-cells = <0x1>;
#size-cells = <0x0>;
@@ -323,18 +331,6 @@
interrupts = <3 IRQ_TYPE_EDGE_RISING>;
};
};
-
- wlan_en_reg: regulator@1 {
- compatible = "regulator-fixed";
- regulator-name = "wlan-en-regulator";
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
- /* WLAN_EN GPIO */
- gpio = <&gpio0 5 0>;
- /* WLAN card specific delay */
- startup-delay-us = <70000>;
- enable-active-high;
- };
};
leds {