hc
2023-12-08 01573e231f18eb2d99162747186f59511f56b64d
kernel/Documentation/devicetree/bindings/mmc/mmci.txt
....@@ -15,8 +15,11 @@
1515 Optional properties:
1616 - arm,primecell-periphid : contains the PrimeCell Peripheral ID, it overrides
1717 the ID provided by the HW
18
+- resets : phandle to internal reset line.
19
+ Should be defined for sdmmc variant.
1820 - vqmmc-supply : phandle to the regulator device tree node, mentioned
1921 as the VCCQ/VDD_IO supply in the eMMC/SD specs.
22
+specific for ux500 variant:
2023 - st,sig-dir-dat0 : bus signal direction pin used for DAT[0].
2124 - st,sig-dir-dat2 : bus signal direction pin used for DAT[2].
2225 - st,sig-dir-dat31 : bus signal direction pin used for DAT[3] and DAT[1].
....@@ -24,6 +27,16 @@
2427 - st,sig-dir-cmd : cmd signal direction pin used for CMD.
2528 - st,sig-pin-fbclk : feedback clock signal pin used.
2629
30
+specific for sdmmc variant:
31
+- reg : a second base register may be defined if a delay
32
+ block is present and used for tuning.
33
+- st,sig-dir : signal direction polarity used for cmd, dat0 dat123.
34
+- st,neg-edge : data & command phase relation, generated on
35
+ sd clock falling edge.
36
+- st,use-ckin : use ckin pin from an external driver to sample
37
+ the receive data (example: with voltage
38
+ switch transceiver).
39
+
2740 Deprecated properties:
2841 - mmc-cap-mmc-highspeed : indicates whether MMC is high speed capable.
2942 - mmc-cap-sd-highspeed : indicates whether SD is high speed capable.