Re: [PATCH] mmc: dt: Add 'broken-cd' DT binding
From: Chris Ball <hidden>
Date: 2012-08-22 14:54:36
Also in:
linux-mmc, linux-samsung-soc
Hi Thomas, On Wed, Aug 22 2012, Thomas Abraham wrote:
quoted
none -> currently "samsung,sdhci-cd-internal" broken-cd -> currently "samsung,sdhci-cd-none" cd-gpios -> currently "samsung,sdhci-cd-gpios" non-removable -> currently "samsung,sdhci-cd-permanent" cd-gpios + samsung,sdhci-cd-external -> currently "samsung,sdhci-cd-external" How does that sound?Not quite there yet. It is not possible to leave out cd-gpios for "samsung,sdhci-cd-internal" since the current Samsung pinmux configuration piggybacks on gpio dt binding. Can we use the following instead. none -> currently "samsung,sdhci-cd-none" broken-cd -> currently "samsung,sdhci-cd-none" cd-gpios -> currently "samsung,sdhci-cd-gpios" non-removable -> currently "samsung,sdhci-cd-permanent" cd-gpios + samsung,sdhci-cd-internal -> currently "samsung,sdhci-cd-internal"
I see. Okay; unless anyone has better ideas, it sounds like you should go ahead and do that -- with something like this in your binding docs: "This binding differs from the core MMC binding by requiring a cd-gpios property to be present to use internal card-detection. If no cd-gpios are present (and "non-removable" is missing) the driver will poll for card-detection as if a "broken-cd" property was provided." I'll send out the new core bindings doc shortly. Finishing off another thread -- the "samsung-sdhci.txt" name is okay. Thanks, - Chris. -- Chris Ball [off-list ref] <http://printf.net/> One Laptop Per Child