mx31moboard: two GPIOS are used to reset other microcontrolers on the robot
Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx3/mx31moboard-marxbot.c b/arch/arm/mach-mx3/mx31moboard-marxbot.c
index 53ce7ff..3e2b730 100644
--- a/arch/arm/mach-mx3/mx31moboard-marxbot.c
+++ b/arch/arm/mach-mx3/mx31moboard-marxbot.c
@@ -47,6 +47,8 @@
MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
MX31_PIN_TXD2__GPIO1_28,
+ /* dsPIC resets */
+ MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22,
};
#define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
@@ -102,6 +104,22 @@
.exit = marxbot_sdhc2_exit,
};
+#define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_STXD5)
+#define DSPICS_RST_B IOMUX_TO_GPIO(MX31_PIN_SRXD5)
+
+static void dspics_resets_init(void)
+{
+ if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
+ gpio_direction_output(TRSLAT_RST_B, 1);
+ gpio_export(TRSLAT_RST_B, false);
+ }
+
+ if (!gpio_request(DSPICS_RST_B, "dspics-rst")) {
+ gpio_direction_output(DSPICS_RST_B, 1);
+ gpio_export(DSPICS_RST_B, false);
+ }
+}
+
/*
* system init for baseboard usage. Will be called by mx31moboard init.
*/
@@ -112,5 +130,7 @@
mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins),
"marxbot");
+ dspics_resets_init();
+
mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);
}