Add binding documentation for mmc host controllers present on TI's AM654
SOCs.
Signed-off-by: Faiz Abbas <faiz_abbas@xxxxxx>
---
.../devicetree/bindings/mmc/sdhci-am654.txt | 37 +++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-am654.txt
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-am654.txt b/Documentation/devicetree/bindings/mmc/sdhci-am654.txt
new file mode 100644
index 000000000000..862b93051bfe
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/sdhci-am654.txt
@@ -0,0 +1,37 @@
+Device Tree Bindings for the SDHCI Controllers present on TI's AM654 SOCs
+
+The bindings follow the mmc[1], clock[2] and interrupt[3] bindings.
+Only deviations are documented here.
+
+ [1] Documentation/devicetree/bindings/mmc/mmc.txt
+ [2] Documentation/devicetree/bindings/clock/clock-bindings.txt
+ [3] Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+
+Required Properties:
+ - compatible: should be "ti,am654-sdhci-5.1"
+ - reg: Must be two entries.
+ - The first should be the sdhci register space
+ - The second should the subsystem/phy register space
+ - clocks: Handles to the clock inputs.
+ - clock-names: Tuple including "clk_xin" and "clk_ahb"
+ - interrupts: Interrupt specifiers
+ - ti,otap-del-sel: Output Tap Delay select
+ - ti,trm-icp: DLL trim select
+ - ti,driver-strength-ohm: driver strength in ohms.
+ Valid values are 33, 40, 50, 66 and 100 ohms.
+
+Example:
+
+ sdhci0: sdhci@4f80000 {
+ compatible = "ti,am654-sdhci-5.1";
+ reg = <0x0 0x4f80000 0x0 0x260>, <0x0 0x4f90000 0x0 0x134>;
+ power-domains = <&k3_pds 47>;
+ clocks = <&k3_clks 47 0>, <&k3_clks 47 1>;
+ clock-names = "clk_ahb", "clk_xin";
+ interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
+ sdhci-caps-mask = <0x80000007 0x0>;
+ mmc-ddr-1_8v;
+ ti,otap-del-sel = <0x2>;
+ ti,trm-icp = <0x8>;
+ status = "disabled";
+ };
--
2.19.2
