linux-kernel - [PATCH] ARM: dts: vf610-zii-dev-rev-c: fix polarity of at86rf233 reset line

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Message-ID: <Yzc0B6jNsZyQZizj@google.com>
Date:   Fri, 30 Sep 2022 11:23:03 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>
Cc:     Pengutronix Kernel Team <kernel@...gutronix.de>,
        Stefan Agner <stefan@...er.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: dts: vf610-zii-dev-rev-c: fix polarity of at86rf233
 reset line

at86rf230 driver starts with having reset line high, and then drives it
low and then high again, and even calls it "rstn" internally, therefore
it needs to be annotated as "active low" in the DTS.

This will make difference when at86rf230 driver will be converted to
gpiod API that respects declared line polarity.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 arch/arm/boot/dts/vf610-zii-dev-rev-c.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts b/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts
index de79dcfd32e6..f892977da9e4 100644
--- a/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts
+++ b/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts
@@ -259,7 +259,7 @@ atzb-rf-233@1 {
 		xtal-trim = /bits/ 8 <0x06>;
 
 		sleep-gpio = <&gpio0 24 GPIO_ACTIVE_HIGH>;
-		reset-gpio = <&gpio6 10 GPIO_ACTIVE_HIGH>;
+		reset-gpio = <&gpio6 10 GPIO_ACTIVE_LOW>;
 
 		fsl,spi-cs-sck-delay = <180>;
 		fsl,spi-sck-cs-delay = <250>;
-- 
2.38.0.rc1.362.ged0d419d3c-goog


-- 
Dmitry