linux-kernel - Re: [PATCH V8 5/5] i2c: tegra: Add I2C interface timing support

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Message-ID: <20190131125015.GK23438@ulmo>
Date:   Thu, 31 Jan 2019 13:50:15 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Sowjanya Komatineni <skomatineni@...dia.com>
Cc:     jonathanh@...dia.com, mkarthik@...dia.com, smohammed@...dia.com,
        talho@...dia.com, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org
Subject: Re: [PATCH V8 5/5] i2c: tegra: Add I2C interface timing support

On Wed, Jan 30, 2019 at 10:16:27PM -0800, Sowjanya Komatineni wrote:
> This patch adds I2C interface timing registers support for
> proper bus rate configuration along with meeting the i2c spec
> setup and hold times based on the tuning performed on Tegra210,
> Tegra186 and Tegra194 platforms.
> 
> I2C_INTERFACE_TIMING_0 register contains TLOW and THIGH field
> and Tegra I2C controller design uses them as a part of internal
> clock divisor.
> 
> I2C_INTERFACE_TIMING_1 register contains the setup and hold times
> for start and stop conditions.
> 
> Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
> ---
>  [V8] : Updated to handle timing implementation within tegra_i2c_init directly
>  [V7] : Minor updates to timing implementation
>  [V5/V6] : Added this Interface timing patch in V5 of the patch series.
> 
>  drivers/i2c/busses/i2c-tegra.c | 187 ++++++++++++++++++++++++++++++++++-------
>  1 file changed, 158 insertions(+), 29 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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