linux-kernel - Re: [PATCH] arm64: dts: imx8mp-msc-sm2s: Add i2c{1,6} sda-/scl-gpios

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Message-ID: <CAOMZO5CaOYt72pZJ7fsdQgz3Vz=G+WXNE==ZO7nC32M3oBCKxQ@mail.gmail.com>
Date: Mon, 8 Apr 2024 08:48:51 -0300
From: Fabio Estevam <festevam@...il.com>
To: Ian Ray <ian.ray@...ealthcare.com>
Cc: Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
	Pengutronix Kernel Team <kernel@...gutronix.de>, devicetree@...r.kernel.org, imx@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mp-msc-sm2s: Add i2c{1,6} sda-/scl-gpios

On Mon, Apr 8, 2024 at 8:44 AM Ian Ray <ian.ray@...ealthcare.com> wrote:

> Thank you -- I will submit a V2.
>
> Would 0x1c2 be more correct?  From the IMX8MPRM.pdf, it seems that the
> lowest bit is reserved.  Example: 8.2.4.158 SW_PAD_CTL_PAD_GPIO1_IO05
> SW PAD Control Register (IOMUXC_SW_PAD_CTL_PAD_GPIO1_IO05).

Yes, good catch. It is better not to write to the reserved bit 0, so
0x1c2 is preferred.