[PATCH 2/2] i2c: algos: bit: mention our experience about initial states

[Alex Deucher]

On Sat, Jun 16, 2018 at 9:37 AM, Wolfram Sang
<wsa+renesas at sang-engineering.com> wrote:
> So, if somebody wants to re-implement this in the future, we pinpoint to
> a problem case.
>
> Signed-off-by: Wolfram Sang <wsa+renesas at sang-engineering.com>

Series is:
Acked-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/i2c/algos/i2c-algo-bit.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
> index 0c0eb16d710f..6ec65adaba49 100644
> --- a/drivers/i2c/algos/i2c-algo-bit.c
> +++ b/drivers/i2c/algos/i2c-algo-bit.c
> @@ -647,6 +647,11 @@ static int __i2c_bit_add_bus(struct i2c_adapter *adap,
>         if (bit_adap->getscl == NULL)
>                 adap->quirks = &i2c_bit_quirk_no_clk_stretch;
>
> +       /*
> +        * We tried forcing SCL/SDA to an initial state here. But that caused a
> +        * regression, sadly. Check Bugzilla #200045 for details.
> +        */
> +
>         ret = add_adapter(adap);
>         if (ret < 0)
>                 return ret;
> --
> 2.11.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel