Add pinmuxing for the LCD panels.
Both panels have a reset GPIO, but the second one has some extra
complexity: some boards have a PicoDLP projector, which shares resources
with the LCD2. We don't currently support switching between the PicoDL
and the LCD2, so we use pin pull-ups and pull-downs to select the LCD2.
GPIO40 is pulled down, which disables the PicoDLP power. GPIO59 is
pulled up, which selects the LCD2.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
arch/arm/boot/dts/omap4-sdp.dts | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts
index 7951b4e..ed14a7a 100644
--- a/arch/arm/boot/dts/omap4-sdp.dts
+++ b/arch/arm/boot/dts/omap4-sdp.dts
@@ -166,6 +166,8 @@
&mcbsp2_pins
&dss_hdmi_pins
&tpd12s015_pins
+ &lcd1_pins
+ &lcd2_pins
>;
uart2_pins: pinmux_uart2_pins {
@@ -268,6 +270,25 @@
>;
};
+ lcd1_pins: pinmux_lcd1_pins {
+ pinctrl-single,pins = <
+ 0x52 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* gpio_102 */
+ >;
+ };
+
+ /*
+ * GPIO 59 is used to switch between LCD2 and PicoDLP. We don't support
+ * the switching, so set the pin to PULLUP which enables the LCD2.
+ * GPIO 40 enables power to PicoDLP. Use PULLDOWN to disable power.
+ */
+ lcd2_pins: pinmux_lcd2_pins {
+ pinctrl-single,pins = <
+ 0x20 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* gpio_40 */
+ 0x46 (PIN_OUTPUT_PULLUP | MUX_MODE3) /* gpio_59 */
+ 0x56 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* gpio_104 */
+ >;
+ };
+
i2c1_pins: pinmux_i2c1_pins {
pinctrl-single,pins = <
0xe2 (PIN_INPUT_PULLUP | MUX_MODE0) /* i2c1_scl */
--
1.8.1.2
--
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