linux-kernel - [PATCH v2] arm64: dts: apq8096-db820c: Removed bt-en-1-8v regulator

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Date:   Thu, 24 May 2018 20:01:55 +0200
From:   Thierry Escande <thierry.escande@...aro.org>
To:     Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Niklas Cassel <niklas.cassel@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] arm64: dts: apq8096-db820c: Removed bt-en-1-8v regulator

This patch removes the unused bt-en-1-8v regulator and moves the
bt_en_gios claim to the pm8994_gpios node.

This bt_en_gpio could have been moved to the bluetooth serial node but
instead this node declares an 'enable' gpio addressing the bt_en_gpio.
This is needed by the Qualcomm QCA6174 WLAN/BT combo chip that needs to
have the bt_en_gpio claimed even if only WLAN is used.

Signed-off-by: Thierry Escande <thierry.escande@...aro.org>
---

Change in v2:
- Rebased on top of [1] posted a few days ago:

[1] https://lkml.org/lkml/2018/5/22/949
    "arm64: dts: fix regulator property name for wlan pcie endpoint"
    

 arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi |  2 +-
 arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi           | 14 --------------
 2 files changed, 1 insertion(+), 15 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi
index 6167af955659..a6ad3d7fe655 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi
@@ -4,7 +4,7 @@
 &pm8994_gpios {
 
 	pinctrl-names = "default";
-	pinctrl-0 = <&ls_exp_gpio_f>;
+	pinctrl-0 = <&ls_exp_gpio_f &bt_en_gpios>;
 
 	ls_exp_gpio_f: pm8994_gpio5 {
 		pinconf {
diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
index 7ca6e78def55..2c026b8af792 100644
--- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
@@ -171,19 +171,6 @@
 			pinctrl-0 = <&usb2_vbus_det_gpio>;
 		};
 
-		bt_en: bt-en-1-8v {
-			pinctrl-names = "default";
-			pinctrl-0 = <&bt_en_gpios>;
-			compatible = "regulator-fixed";
-			regulator-name = "bt-en-regulator";
-			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <1800000>;
-
-			/* WLAN card specific delay */
-			startup-delay-us = <70000>;
-			enable-active-high;
-		};
-
 		wlan_en: wlan-en-1-8v {
 			pinctrl-names = "default";
 			pinctrl-0 = <&wlan_en_gpios>;
@@ -204,7 +191,6 @@
 				status = "okay";
 				perst-gpio = <&msmgpio 35 GPIO_ACTIVE_LOW>;
 				vddpe-3v3-supply = <&wlan_en>;
-				vddpe1-supply = <&bt_en>;
 			};
 
 			pcie@...000 {
-- 
2.14.1