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Message-ID: <bef0570137358c6c4a55f59e7a4977c4@manjaro.org>
Date: Tue, 22 Oct 2024 23:10:55 +0200
From: Dragan Simic <dsimic@...jaro.org>
To: linux-sunxi@...ts.linux.dev
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, wens@...e.org,
jernej.skrabec@...il.com, samuel@...lland.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
stable@...r.kernel.org, Ondrej Jirman <megi@....cz>, Andrey Skvortsov
<andrej.skvortzov@...il.com>
Subject: Re: [PATCH] arm64: dts: allwinner: pinephone: Add mount matrix to
accelerometer
Hello,
On 2024-09-19 21:15, Dragan Simic wrote:
> The way InvenSense MPU-6050 accelerometer is mounted on the user-facing
> side
> of the Pine64 PinePhone mainboard, which makes it rotated 90 degrees
> counter-
> clockwise, [1] requires the accelerometer's x- and y-axis to be
> swapped, and
> the direction of the accelerometer's y-axis to be inverted.
>
> Rectify this by adding a mount-matrix to the accelerometer definition
> in the
> Pine64 PinePhone dtsi file.
>
> [1]
> https://files.pine64.org/doc/PinePhone/PinePhone%20mainboard%20bottom%20placement%20v1.1%2020191031.pdf
>
> Fixes: 91f480d40942 ("arm64: dts: allwinner: Add initial support for
> Pine64 PinePhone")
> Cc: stable@...r.kernel.org
> Helped-by: Ondrej Jirman <megi@....cz>
> Helped-by: Andrey Skvortsov <andrej.skvortzov@...il.com>
> Signed-off-by: Dragan Simic <dsimic@...jaro.org>
Just a brief reminder about this patch... Please, let me know if some
further work is needed for it to become accepted.
> ---
>
> Notes:
> See also the linux-sunxi thread [2] that has led to this patch,
> which
> provides a rather detailed analysis with additional details and
> pictures.
> This patch effectively replaces the patch submitted in that thread.
>
> [2]
> https://lore.kernel.org/linux-sunxi/20240916204521.2033218-1-andrej.skvortzov@gmail.com/T/#u
>
> arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
> b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
> index 6eab61a12cd8..b844759f52c0 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
> @@ -212,6 +212,9 @@ accelerometer@68 {
> interrupts = <7 5 IRQ_TYPE_EDGE_RISING>; /* PH5 */
> vdd-supply = <®_dldo1>;
> vddio-supply = <®_dldo1>;
> + mount-matrix = "0", "1", "0",
> + "-1", "0", "0",
> + "0", "0", "1";
> };
> };
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