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authorLudovic Barre <[email protected]>2020-01-28 10:06:32 +0100
committerUlf Hansson <[email protected]>2020-03-24 14:35:40 +0100
commite19c33dbfe95e1807be3eb6f252aa60ad5ace531 (patch)
treebd56c4afa18d440af5d7fd797ea38cece02b8cfc
parent31b963e19491692e56da00b15fd29623f5c5d0cf (diff)
dt-bindings: mmc: mmci: add delay block base register for sdmmc
To support the sdr104 mode, the sdmmc variant has a hardware delay block to manage the clock phase when sampling data received by the card. This patch adds a second base register (optional) for sdmmc delay block. Signed-off-by: Ludovic Barre <[email protected]> Acked-by: Rob Herring <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Ulf Hansson <[email protected]>
-rw-r--r--Documentation/devicetree/bindings/mmc/mmci.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmci.txt b/Documentation/devicetree/bindings/mmc/mmci.txt
index 6d3c626e017d..4ec921e4bf34 100644
--- a/Documentation/devicetree/bindings/mmc/mmci.txt
+++ b/Documentation/devicetree/bindings/mmc/mmci.txt
@@ -28,6 +28,8 @@ specific for ux500 variant:
- st,sig-pin-fbclk : feedback clock signal pin used.
specific for sdmmc variant:
+- reg : a second base register may be defined if a delay
+ block is present and used for tuning.
- st,sig-dir : signal direction polarity used for cmd, dat0 dat123.
- st,neg-edge : data & command phase relation, generated on
sd clock falling edge.