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From: Peter Rosin <peda@axentia.se>
To: Biwen Li <biwen.li@nxp.com>,
	"leoyang.li@nxp.com" <leoyang.li@nxp.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>
Cc: "linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: [RESEND v6,3/3] arm64: dts: fsl-ls208xa-rdb: fix an errata E-00013
Date: Fri, 3 Jan 2020 14:09:41 +0000	[thread overview]
Message-ID: <d91b3dfa-e0dc-9697-b69b-463ee7a92945@axentia.se> (raw)
In-Reply-To: <20191225103624.48342-3-biwen.li@nxp.com>

On 2019-12-25 11:36, Biwen Li wrote:
> Specify a channel zero in idle state to
> avoid enterring tri-stated state for PCA9547.
> About E-00013:
> 	- Description: I2C1 and I2C3 buses
> 	  are missing pull-up.
> 	- Impact: When the PCA954x device is tri-stated, the I2C bus
> 	  will float. This makes the I2C bus and its associated
> 	  downstream devices inaccessible.
> 	- Hardware fix: Populate resistors R189 and R190 for I2C1
> 	  and resistors R228 and R229 for I2C3.
> 	- Software fix: Remove the tri-state option from the PCA954x
> 	  driver(PCA954x always on enable status, specify a
> 	  channel zero in dts to fix the errata E-00013).
> 
> Signed-off-by: Biwen Li <biwen.li@nxp.com>

For this patch, get_maintainer.pl suggests a few more recipients that
you need to seek reviews/acks from.

Cheers,
Peter

  reply	other threads:[~2020-01-03 14:09 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-25 10:36 [RESEND v6,1/3] dt-bindings: i2c: support property idle-state Biwen Li
2019-12-25 10:36 ` [RESEND v6,2/3] i2c: mux: pca954x: " Biwen Li
2020-01-03 14:06   ` Peter Rosin
2019-12-25 10:36 ` [RESEND v6,3/3] arm64: dts: fsl-ls208xa-rdb: fix an errata E-00013 Biwen Li
2020-01-03 14:09   ` Peter Rosin [this message]
2020-01-03 14:05 ` [RESEND v6,1/3] dt-bindings: i2c: support property idle-state Peter Rosin

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