summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/mmc/hi3798cv200-dw-mshc.txt
diff options
context:
space:
mode:
Diffstat (limited to 'dts/Bindings/mmc/hi3798cv200-dw-mshc.txt')
-rw-r--r--dts/Bindings/mmc/hi3798cv200-dw-mshc.txt40
1 files changed, 40 insertions, 0 deletions
diff --git a/dts/Bindings/mmc/hi3798cv200-dw-mshc.txt b/dts/Bindings/mmc/hi3798cv200-dw-mshc.txt
new file mode 100644
index 0000000..a0693b7
--- /dev/null
+++ b/dts/Bindings/mmc/hi3798cv200-dw-mshc.txt
@@ -0,0 +1,40 @@
+* Hisilicon Hi3798CV200 specific extensions to the Synopsys Designware Mobile
+ Storage Host Controller
+
+Read synopsys-dw-mshc.txt for more details
+
+The Synopsys designware mobile storage host controller is used to interface
+a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
+differences between the core Synopsys dw mshc controller properties described
+by synopsys-dw-mshc.txt and the properties used by the Hisilicon Hi3798CV200
+specific extensions to the Synopsys Designware Mobile Storage Host Controller.
+
+Required Properties:
+- compatible: Should contain "hisilicon,hi3798cv200-dw-mshc".
+- clocks: A list of phandle + clock-specifier pairs for the clocks listed
+ in clock-names.
+- clock-names: Should contain the following:
+ "ciu" - The ciu clock described in synopsys-dw-mshc.txt.
+ "biu" - The biu clock described in synopsys-dw-mshc.txt.
+ "ciu-sample" - Hi3798CV200 extended phase clock for ciu sampling.
+ "ciu-drive" - Hi3798CV200 extended phase clock for ciu driving.
+
+Example:
+
+ emmc: mmc@9830000 {
+ compatible = "hisilicon,hi3798cv200-dw-mshc";
+ reg = <0x9830000 0x10000>;
+ interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&crg HISTB_MMC_CIU_CLK>,
+ <&crg HISTB_MMC_BIU_CLK>,
+ <&crg HISTB_MMC_SAMPLE_CLK>,
+ <&crg HISTB_MMC_DRV_CLK>;
+ clock-names = "ciu", "biu", "ciu-sample", "ciu-drive";
+ fifo-depth = <256>;
+ clock-frequency = <200000000>;
+ cap-mmc-highspeed;
+ mmc-ddr-1_8v;
+ mmc-hs200-1_8v;
+ non-removable;
+ bus-width = <8>;
+ };