linux-kernel - [PATCH 9/9] arm64: dts: rockchip: add regulator info for Kevin digitizer

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Message-Id: <1480645653-36943-10-git-send-email-briannorris@chromium.org>
Date:   Thu,  1 Dec 2016 18:27:33 -0800
From:   Brian Norris <briannorris@...omium.org>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Caesar Wang <wxt@...k-chips.com>,
        Doug Anderson <dianders@...omium.org>,
        <devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
        Stephen Barber <smbarber@...omium.org>,
        linux-arm-kernel@...ts.infradead.org,
        Chris Zhong <zyw@...k-chips.com>,
        Brian Norris <briannorris@...omium.org>
Subject: [PATCH 9/9] arm64: dts: rockchip: add regulator info for Kevin digitizer

We need to enable this regulator before the digitizer can be used. Wacom
recommended waiting for 100 ms before talking to the HID.

Signed-off-by: Brian Norris <briannorris@...omium.org>
---
Uses WIP bindings:

[PATCH v3 1/2] devicetree: i2c-hid: Add regulator support
https://patchwork.kernel.org/patch/9457493/
---
 arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
index 66db785375a8..d260079de2ab 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
@@ -232,6 +232,9 @@ ap_i2c_dig: &i2c2 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&cpu1_dig_irq_l &cpu1_dig_pdct_l>;
 
+		vdd-supply = <&p3_3v_dig>;
+		init-delay-ms = <100>;
+
 		interrupt-parent = <&gpio2>;
 		interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
 
-- 
2.8.0.rc3.226.g39d4020