Re: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3

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To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Subject: Re: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
From: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Date: Thu, 28 Jun 2018 07:13:25 +0200
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>, Linux I2C <linux-i2c@xxxxxxxxxxxxxxx>, Linux-Renesas <linux-renesas-soc@xxxxxxxxxxxxxxx>, Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@xxxxxxxxxxx>
In-reply-to: <OSBPR01MB229371E806C2D772B426C469D8480@OSBPR01MB2293.jpnprd01.prod.outlook.com>
References: <TY2PR01MB2297BC5F12034143657590A7D86C0@TY2PR01MB2297.jpnprd01.prod.outlook.com> <CAMuHMdXaspHUg3LF1Jckg5CWHZWRL6gKOeCv-LHk4uzsji2W1Q@mail.gmail.com> <OSBPR01MB2293BBBFEBF58E8D90F3B516D8630@OSBPR01MB2293.jpnprd01.prod.outlook.com> <OSBPR01MB229354C6675F1185BD182C54D8640@OSBPR01MB2293.jpnprd01.prod.outlook.com> <CAMuHMdV-vLn-C6HcZBLwJWbXq2S3e-iQdmQXCEXm23+cEvk8gw@mail.gmail.com> <20180626030510.gq3xyejsrc5gd5wj@ninjato> <TY2PR01MB22973680E5B69BAD232C234DD8490@TY2PR01MB2297.jpnprd01.prod.outlook.com> <CAMuHMdXfUjLPa9fGXAkBe6DjVx6jiuNiGN9m2v2bRQf2xurmxA@mail.gmail.com> <20180627084421.zrtpsms5eyftqcfb@ninjato> <OSBPR01MB229371E806C2D772B426C469D8480@OSBPR01MB2293.jpnprd01.prod.outlook.com>
User-agent: NeoMutt/20170113 (1.7.2)

Shimoda-san,

> Please refer to "57.5.4 Usage note for the transmission and reception
> procedure" in the datasheet Rev. 1.00.

Thank you. I'll send a new version with the workaround in the i2c
driver.

> The BSP waits for maximum 1024us, not 1024ms.

You are right. Sorry, my mistake.

Regards,

   Wolfram

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References:
- RE: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Yoshihiro Shimoda
- Re: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Geert Uytterhoeven
- RE: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Yoshihiro Shimoda
- RE: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Yoshihiro Shimoda
- Re: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Geert Uytterhoeven
- Re: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Wolfram Sang
- RE: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Yoshihiro Shimoda
- Re: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Geert Uytterhoeven
- Re: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Wolfram Sang
- RE: [RFC PATCH 1/1] i2c: rcar: handle RXDMA HW bug on Gen3
  - From: Yoshihiro Shimoda

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