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

On Wed, Jun 20, 2018 at 1:35 PM, Nick Dyer nick@shmanahar.org 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@shmanahar.org Fixes: ceef0396f367 ("ARM: dts: imx: add ZII RDU1 board") Cc: stable@vger.kernel.org # 4.15+ Reviewed-by: Fabio Estevam fabio.estevam@nxp.com

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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@gmail.com