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Message-Id: <20190409231405.189335-1-mka@chromium.org>
Date: Tue, 9 Apr 2019 16:14:05 -0700
From: Matthias Kaehlcke <mka@...omium.org>
To: Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>
Cc: linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Douglas Anderson <dianders@...omium.org>,
Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH] ARM: dts: rockchip: Add BT_EN to the power sequence for veyron
Add GPIO D5 (BT_ENABLE_L) as reset-GPIO to the power sequence for the
Bluetooth/WiFi module. On devices with a Broadcom module the signal
needs to be asserted to use Bluetooth.
Note that BT_ENABLE_L is a misnomer in the schematics, the signal
actually is active-high.
Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
---
arch/arm/boot/dts/rk3288-veyron.dtsi | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/dts/rk3288-veyron.dtsi b/arch/arm/boot/dts/rk3288-veyron.dtsi
index 0bc2409f6903..a4cd851dc313 100644
--- a/arch/arm/boot/dts/rk3288-veyron.dtsi
+++ b/arch/arm/boot/dts/rk3288-veyron.dtsi
@@ -62,12 +62,19 @@
pinctrl-0 = <&bt_enable_l>, <&wifi_enable_h>;
/*
- * On the module itself this is one of these (depending
- * on the actual card populated):
+ * Depending on the actual card populated GPIO4 D4 and D5
+ * correspond to one of these signals on the module:
+ *
+ * D4:
* - SDIO_RESET_L_WL_REG_ON
* - PDN (power down when low)
+ *
+ * D5:
+ * - BT_I2S_WS_BT_RFDISABLE_L
+ * - No connect
*/
- reset-gpios = <&gpio4 RK_PD4 GPIO_ACTIVE_LOW>;
+ reset-gpios = <&gpio4 RK_PD4 GPIO_ACTIVE_LOW>,
+ <&gpio4 RK_PD5 GPIO_ACTIVE_LOW>;
};
vcc_5v: vcc-5v {
--
2.21.0.392.gf8f6787159e-goog
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