MMC2 is used by the on-board WiFi module populated on some boards
(based on Marvell Libertas 8688 SDIO).
Note: currently WiFi only works on cold boot, as the module is not
properly reset (missing binding for the GPIO reset).
Signed-off-by: Florian Vaussard <florian.vaussard@xxxxxxx>
---
arch/arm/boot/dts/omap3-overo.dtsi | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/omap3-overo.dtsi b/arch/arm/boot/dts/omap3-overo.dtsi
index d48f25c..9ce9591 100644
--- a/arch/arm/boot/dts/omap3-overo.dtsi
+++ b/arch/arm/boot/dts/omap3-overo.dtsi
@@ -32,6 +32,12 @@
ti,mcbsp = <&mcbsp2>;
ti,codec = <&twl_audio>;
};
+
+ vlibertas: regulator-vlibertas {
+ compatible = "regulator-fixed";
+ regulator-name = "vlibertas";
+ regulator-always-on;
+ };
};
&omap3_pmx_core {
@@ -59,6 +65,17 @@
OMAP3_CORE1_IOPAD(0x214e, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc1_dat3.sdmmc1_dat3 */
>;
};
+
+ mmc2_pins: pinmux_mmc2_pins {
+ pinctrl-single,pins = <
+ OMAP3_CORE1_IOPAD(0x2158, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_clk.sdmmc2_clk */
+ OMAP3_CORE1_IOPAD(0x215a, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_cmd.sdmmc2_cmd */
+ OMAP3_CORE1_IOPAD(0x215c, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat0.sdmmc2_dat0 */
+ OMAP3_CORE1_IOPAD(0x215e, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat1.sdmmc2_dat1 */
+ OMAP3_CORE1_IOPAD(0x2160, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat2.sdmmc2_dat2 */
+ OMAP3_CORE1_IOPAD(0x2162, PIN_INPUT_PULLUP | MUX_MODE0) /* sdmmc2_dat3.sdmmc2_dat3 */
+ >;
+ };
};
&i2c1 {
@@ -102,7 +119,11 @@
/* optional on board WiFi */
&mmc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc2_pins>;
+ vmmc-supply = <&vlibertas>;
bus-width = <4>;
+ non-removable;
};
&twl_gpio {
--
1.8.1.2
--
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