ARM: dts: motorola-mapphone: Add mdm6600 sleep pins

The sleep pins never got added earlier probably because the driver was not
behaving correctly with the sleep pins. We need the sleep pins to prevent
the modem from waking up on it's own if the reset pin glitches in deeper
SoC idle states.

Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Message-ID: <20230911035828.36984-1-tony@atomide.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi b/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi
index 091ba310053ebc6fb99424c136b7794efc4721b4..ead5700e9f60f73772919d90ba9640efe86792ee 100644 (file)
--- a/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi
+++ b/arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi
@@ -67,7 +67,8 @@
        fsusb1_phy: usb-phy@1 {
                compatible = "motorola,mapphone-mdm6600";
                pinctrl-0 = <&usb_mdm6600_pins>;
-               pinctrl-names = "default";
+               pinctrl-1 = <&usb_mdm6600_sleep_pins>;
+               pinctrl-names = "default", "sleep";
                enable-gpios = <&gpio3 31 GPIO_ACTIVE_LOW>;     /* gpio_95 */
                power-gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>;     /* gpio_54 */
                reset-gpios = <&gpio2 17 GPIO_ACTIVE_HIGH>;     /* gpio_49 */
@@ -476,6 +477,23 @@
                >;
        };
 
+       /* Modem sleep pins to keep gpio_49 high with internal pull */
+       usb_mdm6600_sleep_pins: usb-mdm6600-sleep-pins {
+               pinctrl-single,pins = <
+               OMAP4_IOPAD(0x0d8, PIN_INPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x07c, PIN_OUTPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x072, PIN_INPUT_PULLUP | MUX_MODE7) /* Keep gpio_49 reset high */
+               OMAP4_IOPAD(0x14e, PIN_OUTPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x150, PIN_OFF_OUTPUT_LOW | PIN_INPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x07e, PIN_INPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x07a, PIN_INPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x078, PIN_INPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x094, PIN_OUTPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x096, PIN_OUTPUT | MUX_MODE3)
+               OMAP4_IOPAD(0x142, PIN_OUTPUT | MUX_MODE3)
+               >;
+       };
+
        usb_ulpi_pins: usb-ulpi-pins {
                pinctrl-single,pins = <
                OMAP4_IOPAD(0x196, MUX_MODE7)