On some systems the sdhci capabilty registers are incorrect for one reason or another.
The sdhci-caps-mask property specifies which bits in the registers 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 <zach.br...@ni.com> --- Documentation/devicetree/bindings/mmc/mmc.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 8a37782..1415aa0 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -52,6 +52,13 @@ Optional properties: - no-sdio: controller is limited to send sdio cmd during initialization - no-sd: controller is limited to send sd cmd during initialization - no-mmc: controller is limited to send mmc cmd during initialization +- sdhci-caps-mask: The sdhci capabilities registers are incorrect. This 64bit + property corresponds to the bits in the sdhci capabilty registers. If the bit + is on in the mask then the bit is incorrect in the registers and should be + turned off. +- sdhci-caps: The sdhci capabilities registers are incorrect. This 64bit + property corresponds to the bits in the sdhci capability registers. If the + bit is on in the property then the bit should be on in the reigsters. *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line polarity properties, we have to fix the meaning of the "normal" and "inverted" -- 2.7.4
