[Patch v2 1/3] spi: qup: Remove chip select function
From: broonie@kernel.org (Mark Brown)
Date: 2014-06-22 10:47:24
Also in:
linux-arm-msm, linux-spi, lkml
On Sat, Jun 21, 2014 at 01:56:46PM -0500, Andy Gross wrote:
On Sat, Jun 21, 2014 at 11:13:03AM +0100, Mark Brown wrote:quoted
On Thu, Jun 12, 2014 at 02:34:10PM -0500, Andy Gross wrote:
quoted
quoted
This patch removes the chip select function. Chip select should instead be supported using GPIOs, defining the DT entry "cs-gpios", and letting the SPI core assert/deassert the chip select as it sees fit.
quoted
Why?
The chip select control inside the controller is buggy. It is supposed to automatically assert the chip select based on the activity in the controller, but it is buggy and doesn't work at all. So instead we elect to use GPIOs.
OK, though it was in manual mode. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20140622/fa9ac4db/attachment.sig>