summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/mmc/sdhci-pxa.txt
diff options
context:
space:
mode:
Diffstat (limited to 'dts/Bindings/mmc/sdhci-pxa.txt')
-rw-r--r--dts/Bindings/mmc/sdhci-pxa.txt36
1 files changed, 36 insertions, 0 deletions
diff --git a/dts/Bindings/mmc/sdhci-pxa.txt b/dts/Bindings/mmc/sdhci-pxa.txt
new file mode 100644
index 0000000000..86223c3eda
--- /dev/null
+++ b/dts/Bindings/mmc/sdhci-pxa.txt
@@ -0,0 +1,36 @@
+* Marvell sdhci-pxa v2/v3 controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the sdhci-pxav2 and sdhci-pxav3 drivers.
+
+Required properties:
+- compatible: Should be "mrvl,pxav2-mmc", "mrvl,pxav3-mmc" or
+ "marvell,armada-380-sdhci".
+- reg:
+ * for "mrvl,pxav2-mmc" and "mrvl,pxav3-mmc", one register area for
+ the SDHCI registers.
+ * for "marvell,armada-380-sdhci", two register areas. The first one
+ for the SDHCI registers themselves, and the second one for the
+ AXI/Mbus bridge registers of the SDHCI unit.
+
+Optional properties:
+- mrvl,clk-delay-cycles: Specify a number of cycles to delay for tuning.
+
+Example:
+
+sdhci@d4280800 {
+ compatible = "mrvl,pxav3-mmc";
+ reg = <0xd4280800 0x800>;
+ bus-width = <8>;
+ interrupts = <27>;
+ non-removable;
+ mrvl,clk-delay-cycles = <31>;
+};
+
+sdhci@d8000 {
+ compatible = "marvell,armada-380-sdhci";
+ reg = <0xd8000 0x1000>, <0xdc000 0x100>;
+ interrupts = <0 25 0x4>;
+ clocks = <&gateclk 17>;
+ mrvl,clk-delay-cycles = <0x1F>;
+};