ARM: dts: am437x: cm-t43: add eMMC support

One of the CompuLab cm-t43 configurations comes with on-board eMMC as
primary storage, residing on the mmc2 interface. Add it to the device tree.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benoit Cousson <bcousson@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Dmitry Lifshitz <lifshitz@compulab.co.il>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts b/arch/arm/boot/dts/am437x-cm-t43.dts
index a2893c6..1011acc 100644 (file)
--- a/arch/arm/boot/dts/am437x-cm-t43.dts
+++ b/arch/arm/boot/dts/am437x-cm-t43.dts
@@ -26,6 +26,15 @@
                        linux,default-trigger = "heartbeat";
                };
        };
+
+       vmmc_3v3: fixedregulator-v3_3 {
+               compatible = "regulator-fixed";
+               regulator-name = "vmmc_3v3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+               enable-active-high;
+       };
 };
 
 &am43xx_pinmux {
@@ -45,6 +54,21 @@
                >;
        };
 
+       emmc_pins: emmc_pins {
+               pinctrl-single,pins = <
+                       AM4372_IOPAD(0x820, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad8.mmc1_dat0 */
+                       AM4372_IOPAD(0x824, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad9.mmc1_dat1 */
+                       AM4372_IOPAD(0x828, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad10.mmc1_dat2 */
+                       AM4372_IOPAD(0x82c, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad11.mmc1_dat3 */
+                       AM4372_IOPAD(0x830, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad12.mmc1_dat4 */
+                       AM4372_IOPAD(0x834, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad13.mmc1_dat5 */
+                       AM4372_IOPAD(0x838, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad14.mmc1_dat6 */
+                       AM4372_IOPAD(0x83c, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_ad15.mmc1_dat7 */
+                       AM4372_IOPAD(0x880, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn1.mmc1_clk */
+                       AM4372_IOPAD(0x884, PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
+               >;
+       };
+
        spi0_pins: pinmux_spi0_pins {
                pinctrl-single,pins = <
                        AM4372_IOPAD(0x950, PIN_INPUT | MUX_MODE0) /* spi0_sclk.spi0_sclk */
@@ -271,6 +295,15 @@
        status = "okay";
 };
 
+&mmc2 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&emmc_pins>;
+       vmmc-supply = <&vmmc_3v3>;
+       bus-width = <8>;
+       ti,non-removable;
+};
+
 &spi0 {
        status = "okay";
        pinctrl-names = "default";