On Thu, Sep 08, 2016 at 02:42:45PM -0500, Zach Brown wrote:
> The sdhci controller on xilinx zynq devices will not function unless
> the CD bit is provided. http://www.xilinx.com/support/answers/61064.html
> In cases where it is impossible to provide the CD bit in hardware,
> setting the controller to test mode and then setting inserted to true
> will get the controller to function without the CD bit.
> The device property "xlnx-fails-without-test-cd" will let the arasan
> driver know the controller does not have the CD line wired and that the
> controller does not function without it.
> Signed-off-by: Zach Brown <zach.br...@ni.com>
> * improved commit messages
> * removed fake-cd device property
> * removed fake-cd quirk
> * use broken-cd device property
> * documented new usage of broken-cd
> * removed new usage of broken-cd
> * created fails-without-test-cd device property
> * created arasan controller specific quirk
> * changed fails-without-test-cd to xlnx-fails-without-test-cd
> * removed extra blank line
> * Fixed style mistake
> * Changed (1 << 0 ) to BIT(0)
> * Fixed style mistakes
> * Condensed unnecessarily long variable names
> * Removed line wraps that were no longer necessary.
> * Rebased changes off Ulf's mmc tree's next branch.
> Documentation/devicetree/bindings/mmc/arasan,sdhci.txt | 4 ++++
> 1 file changed, 4 insertions(+)
> df --gt /Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> index 3404afa..e71f043 100644
> --- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> +++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> @@ -21,6 +21,10 @@ Required Properties:
> - interrupts: Interrupt specifier
> - interrupt-parent: Phandle for the interrupt controller that services
> interrupts for this device.
> +Optional Properties:
> +- xlnx-fails-without-test-cd: when present, the controller doesn't work when
Acked-by: Rob Herring <r...@kernel.org>