From 4e9e2ef9f92573b8a8775b8bf1b23bc8d3b38c4d Mon Sep 17 00:00:00 2001 From: Zach Brown Date: Wed, 2 Nov 2016 10:26:15 -0500 Subject: mmc: sdhci: dt: Add device tree properties sdhci-caps and sdhci-caps-mask On some systems the sdhci capabilty register is incorrect for one reason or another. The sdhci-caps-mask property specifies which bits in the register are incorrect and should be turned off before using sdhci-caps to turn on bits. The sdhci-caps property specifies which bits should be turned on. Signed-off-by: Zach Brown Acked-by: Rob Herring Signed-off-by: Ulf Hansson (cherry picked from commit 426ad975237e880c5ecdc1b74f0a4c34b93d3e14) --- Documentation/devicetree/bindings/mmc/sdhci.txt | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/sdhci.txt (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/mmc/sdhci.txt b/Documentation/devicetree/bindings/mmc/sdhci.txt new file mode 100644 index 000000000000..1c95a1a555c3 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/sdhci.txt @@ -0,0 +1,13 @@ +The properties specific for SD host controllers. For properties shared by MMC +host controllers refer to the mmc[1] bindings. + + [1] Documentation/devicetree/bindings/mmc/mmc.txt + +Optional properties: +- sdhci-caps-mask: The sdhci capabilities register is incorrect. This 64bit + property corresponds to the bits in the sdhci capabilty register. If the bit + is on in the mask then the bit is incorrect in the register and should be + turned off, before applying sdhci-caps. +- sdhci-caps: The sdhci capabilities register is incorrect. This 64bit + property corresponds to the bits in the sdhci capability register. If the + bit is on in the property then the bit should be turned on. -- cgit v1.2.3