mips: octeon: mrvl,octeon_ebb7304.dts: Add MMC DT node

Add the MMC DT node to the Octeon EBB7304 DT file including the
regulator node for the MMC power supply.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Aaron Williams <awilliams@marvell.com>
Cc: Chandrakala Chavva <cchavva@marvell.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

diff --git a/arch/mips/dts/mrvl,octeon-ebb7304.dts b/arch/mips/dts/mrvl,octeon-ebb7304.dts
index 993b4f6..1bb34e1 100644 (file)
--- a/arch/mips/dts/mrvl,octeon-ebb7304.dts
+++ b/arch/mips/dts/mrvl,octeon-ebb7304.dts
@@ -6,16 +6,36 @@
 /dts-v1/;
 
 #include "mrvl,cn73xx.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
        model = "cavium,ebb7304";
        compatible = "cavium,ebb7304";
 
        aliases {
+               mmc0 = &mmc0;
+               mmc1 = &mmc1;
                serial0 = &uart0;
                spi0 = &spi;
        };
 
+       regulators {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               /* Power on GPIO 8, active high */
+               reg_mmc_3v3: regulator@0 {
+                       compatible = "regulator-fixed";
+                       reg = <0>;
+                       regulator-name = "mmc-3v3";
+                       regulator-min-microvolt = <3300000>;
+                       regulator-max-microvolt = <3300000>;
+                       gpio = <&gpio 8 GPIO_ACTIVE_HIGH>;
+                       enable-active-high;
+               };
+       };
+
        chosen {
                stdout-path = &uart0;
        };
@@ -137,3 +157,40 @@
         */
        power = <&gpio 21 0>;
 };
+
+&mmc {
+       status = "okay";
+
+       /* The board has two MMC slots
+        * If both are occupied, the speed must be reduced,
+        * as extra data-line load increases slew time,
+        * and dat-skew adjustment does not help significantly.
+        */
+       mmc0: mmc-slot@0 {
+               compatible = "cavium,octeon-6130-mmc-slot", "mmc-slot";
+               reg = <0>;
+               vqmmc-supply = <&reg_mmc_3v3>;
+               voltage-ranges = <3300 3300>;
+               //spi-max-frequency = <52000000>; // just one
+               spi-max-frequency = <37000000>; // both slots
+               /* bus width can be 1, 4 or 8 */
+               bus-width = <8>; /* new std property */
+               cavium,bus-max-width = <8>; /* custom property */
+               wp-gpios = <&gpio 22 0>; /* active high */
+               cd-gpios = <&gpio 23 1>; /* active low */
+       };
+
+       mmc1: mmc-slot@1 {
+               compatible = "cavium,octeon-6130-mmc-slot", "mmc-slot";
+               reg = <1>;
+               vqmmc-supply = <&reg_mmc_3v3>;
+               voltage-ranges = <3300 3300>;
+               //spi-max-frequency = <52000000>; // just one
+               spi-max-frequency = <37000000>; // both slots
+               /* bus width can be 1, 4 or 8 */
+               bus-width = <8>; /* new std property */
+               cavium,bus-max-width = <8>; /* custom property */
+               wp-gpios = <&gpio 24 0>; /* active high */
+               cd-gpios = <&gpio 25 1>; /* active low */
+       };
+};