[PATCH v2 4/4] arm: dts: rockchip: Enable post_ios_power_on and pre-power-on-delay-ms

Romain Perier
2017-03-06T14:17:16Z

This enables the property post_ios_power_on. With this property, the
driver pwrseq_simple will do its entire power sequence at the end of the
mmc_power_up() function. The property pre-power-on-delay-ms adds a delay
of 1ms between the enablement of the clk and the assertion of the reset
line.

It fixes the power-up sequence for the Wifi chipset AP6335.

Signed-off-by: Romain Perier <romain.perier@collabora.com>
---
arch/arm/boot/dts/rk3288-rock2-square.dts | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/rk3288-rock2-square.dts b/arch/arm/boot/dts/rk3288-rock2-square.dts
index 818c4bf..9bf2991 100644
--- a/arch/arm/boot/dts/rk3288-rock2-square.dts
+++ b/arch/arm/boot/dts/rk3288-rock2-square.dts
@@ -106,6 +106,8 @@
pinctrl-names = "default";
pinctrl-0 = <&wifi_enable>;
reset-gpios = <&gpio4 28 GPIO_ACTIVE_LOW>;
+ pre-power-on-delay-ms = <1>;
+ post-ios-power-on;
};

vcc_usb_host: vcc-host-regulator {
--
2.9.3