Re: [PATCH v4] ARM: dts: imx51-zii-rdu1: fix touchscreen pinctrl

[Chris Healy]

On Wed, Jun 20, 2018 at 1:35 PM, Nick Dyer <nick@xxxxxxxxxxxxx> wrote:
> The pinctrl settings were incorrect for the touchscreen interrupt line, causing
> an interrupt storm. This change has been tested with both the atmel_mxt_ts and
> RMI4 drivers on the RDU1 units.
>
> The value 0x4 comes from the value of register IOMUXC_SW_PAD_CTL_PAD_CSI1_D8
> from the old vendor kernel.
>
> Signed-off-by: Nick Dyer <nick@xxxxxxxxxxxxx>
> Fixes: ceef0396f367 ("ARM: dts: imx: add ZII RDU1 board")
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.15+
> Reviewed-by: Fabio Estevam <fabio.estevam@xxxxxxx>
> ---
> Changes in v4:
> - Add reviewed by Fabio
> Changes in v3:
> - Update commit message to add source of 0x4 value, fixes tag and CC stable
> Changes in v2:
> - Use hex, only alter IRQ line config

Tested on an RDU1 with Synaptics touchscreen successfully.  No
interrupt store any longer...

Tested-by: Chris Healy <cphealy@xxxxxxxxx>