Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Maximilian Weigand <mweigand2017@gmail.com>
Date:   Wed, 14 Jun 2023 21:08:54 +0200
Subject: [PATCH 3/3] arm64: dts: rockchip: shift boost frequency for
 rk3566-pinenote backlight
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <20230602-lm3630a_boost_frequency-v1-3-076472036d1a@mweigand.net>
References: <20230602-lm3630a_boost_frequency-v1-0-076472036d1a@mweigand.net>
In-Reply-To: <20230602-lm3630a_boost_frequency-v1-0-076472036d1a@mweigand.net>
To:     Lee Jones <lee@kernel.org>,
        Daniel Thompson <daniel.thompson@linaro.org>,
        Jingoo Han <jingoohan1@gmail.com>,
        Helge Deller <deller@gmx.de>, Pavel Machek <pavel@ucw.cz>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Heiko Stuebner <heiko@sntech.de>
Cc:     dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-rockchip@lists.infradead.org,
        Maximilian Weigand <mweigand@mweigand.net>
Precedence: bulk

From: Maximilian Weigand <mweigand@mweigand.net>

The PineNote exhibits visible flickering of its backlight for certain
brightness settings. Alleviate this by enabling a frequency shift from
500 kHz to 560 kHz for the boost converter of the led driver.

Signed-off-by: Maximilian Weigand <mweigand@mweigand.net>
---
 arch/arm64/boot/dts/rockchip/rk3566-pinenote.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-pinenote.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-pinenote.dtsi
index 8d61f824c12d..4e4b3bbaa157 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-pinenote.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-pinenote.dtsi
@@ -453,6 +453,7 @@ led-controller@36 {
 		pinctrl-names = "default";
 		#address-cells = <1>;
 		#size-cells = <0>;
+		ti,boost_frequency_shift;
 
 		led@0 {
 			reg = <0>;

-- 
2.39.2