On Wed, 2017-02-08 at 10:47 -0200, Fabio Estevam wrote:
> Commit deb65870b5d9d ("drm/imx: imx-tve: check the value returned by
> regulator_set_voltage()") exposes the following probe issue:
>
> 63ff0000.tve supply dac not found, using dummy regulator
> imx-drm display-subsystem: failed to bind 63ff0000.tve (ops imx_tve_ops): -22
>
> When the 'dac-supply' is not passed in the device tree a dummy regulator is
> used and setting its voltage is not allowed.
>
> To fix this issue, do not set the dac-supply voltage inside the driver
> and let its voltage be specified in the device tree.
>
> Print a warning if the the 'dac-supply' voltage has a value different
> from 2.75V.
>
> Fixes: deb65870b5d9d ("drm/imx: imx-tve: check the value returned by regulator_set_voltage()")
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.8+
> Suggested-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxx>
Thanks, I've applied this instead of the devm_regulator_get_optional
patch.
regards
Philipp
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