linux-kernel - Re: [PATCH v2] i2c: rcar: add SMBus block read support

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Date:   Wed, 30 Mar 2022 13:09:17 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     Eugeniu Rosca <erosca@...adit-jv.com>,
        Andrew Gabbasov <andrew_gabbasov@...tor.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-renesas-soc@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bhuvanesh Surachari <bhuvanesh_surachari@...tor.com>,
        Eugeniu Rosca <roscaeugeniu@...il.com>
Subject: Re: [PATCH v2] i2c: rcar: add SMBus block read support


BTW...

> > ############################################################
> > ##################### WOLFRAM'S PATCH ######################
> > ############################################################
> > root@...r-gen3:# i2cget -y 4 0x68 0 i 8
> > 0x08 0xff 0x06 0xff 0x5f 0xff 0x11 0x08

... for further tests I think the last parameter should be "i 9" here...

> > 
> > root@...r-gen3:# i2cget -y 4 0x68 0 s
> > 0xff 0x06 0xff 0x5f 0xff 0x11 0x08 0x08

... to see if these 8 bytes match the last 8 bytes from above. The first
byte from above is returned internally as the length. It is not a data
byte.


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