Commit 99f84cae43df ("ARM: dts: add wl12xx/wl18xx bindings") added
device tree bindings for the TI WLAN SDIO on many omap variants.
I recall wondering how come omap5-uevm did not have the WLAN
added and this issue has been bugging me for a while now, and
I finally tracked it down to a bad pinmux regression, and a missing
deferred probe handling for the 32k clock from palmas that's
requested by twl6040.
Basically 392adaf796b9 ("ARM: dts: omap5-evm: Add mcspi data")
added pin muxing for mcspi4 that conflicts with the onboard
WLAN. While the omap5-uevm docs say the WLAN is not populated,
this was probably only the case for initial prototypes. Both
omap5-uevm boards I have have WLAN populated.
Let's fix the regression and add the WLAN configuration as
done for the other boards in 99f84cae43df ("ARM: dts: add
wl12xx/wl18xx bindings").
Note that without a related deferred probe fix for twl6040,
the 32k clock is not initialized if palmas-clk is a module
and twl6040 is built-in. And we should probably also request
the 32k clock from palmas directly for MMC3 eventually, but
that's another patch not related to this regression.
Let's also use the generic "non-removable" instead of the
legacy "ti,non-removable" property while at it.
Fixes: 392adaf796b9 ("ARM: dts: omap5-evm: Add mcspi data")
Cc: Benoit Cousson <bcousson@xxxxxxxxxxxx>
Cc: Dr. H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
Cc: Grazvydas Ignotas <notasas@xxxxxxxxx>
Cc: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Cc: Sourav Poddar <sourav.poddar@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/boot/dts/omap5-uevm.dts | 51 +++++++++++++++++++++++++++++++---------
1 file changed, 40 insertions(+), 11 deletions(-)
--- a/arch/arm/boot/dts/omap5-uevm.dts
+++ b/arch/arm/boot/dts/omap5-uevm.dts
@@ -31,6 +31,18 @@
regulator-max-microvolt = <3000000>;
};
+ vmmcsdio_fixed: fixedregulator-mmcsdio {
+ compatible = "regulator-fixed";
+ regulator-name = "vmmcsdio_fixed";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ gpio = <&gpio5 12 GPIO_ACTIVE_HIGH>; /* gpio140 WLAN_EN */
+ enable-active-high;
+ startup-delay-us = <70000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&wlan_pins>;
+ };
+
/* HS USB Host PHY on PORT 2 */
hsusb2_phy: hsusb2_phy {
compatible = "usb-nop-xceiv";
@@ -197,12 +209,20 @@
>;
};
- mcspi4_pins: pinmux_mcspi4_pins {
+ mmc3_pins: pinmux_mmc3_pins {
pinctrl-single,pins = <
- 0x164 (PIN_INPUT | MUX_MODE1) /* mcspi4_clk */
- 0x168 (PIN_INPUT | MUX_MODE1) /* mcspi4_simo */
- 0x16a (PIN_INPUT | MUX_MODE1) /* mcspi4_somi */
- 0x16c (PIN_INPUT | MUX_MODE1) /* mcspi4_cs0 */
+ OMAP5_IOPAD(0x01a4, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_clk */
+ OMAP5_IOPAD(0x01a6, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_cmd */
+ OMAP5_IOPAD(0x01a8, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data0 */
+ OMAP5_IOPAD(0x01aa, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data1 */
+ OMAP5_IOPAD(0x01ac, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data2 */
+ OMAP5_IOPAD(0x01ae, PIN_INPUT_PULLUP | MUX_MODE0) /* wlsdio_data3 */
+ >;
+ };
+
+ wlan_pins: pinmux_wlan_pins {
+ pinctrl-single,pins = <
+ OMAP5_IOPAD(0x1bc, PIN_OUTPUT | MUX_MODE6) /* mcspi1_clk.gpio5_140 */
>;
};
@@ -290,8 +310,22 @@
};
&mmc3 {
+ vmmc-supply = <&vmmcsdio_fixed>;
bus-width = <4>;
- ti,non-removable;
+ non-removable;
+ cap-power-off-card;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc3_pins>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ wlcore: wlcore@2 {
+ compatible = "ti,wl1271";
+ reg = <2>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <14 IRQ_TYPE_LEVEL_HIGH>; /* gpio 14 */
+ ref-clock-frequency = <26000000>;
+ };
};
&mmc4 {
@@ -598,11 +632,6 @@
pinctrl-0 = <&mcspi3_pins>;
};
-&mcspi4 {
- pinctrl-names = "default";
- pinctrl-0 = <&mcspi4_pins>;
-};
-
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_pins>;
--
2.1.4
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