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-rw-r--r--sys/arm/ti/am335x/am335x_pmic.c31
-rw-r--r--sys/arm/ti/am335x/am335x_prcm.c10
-rw-r--r--sys/arm/ti/am335x/am335x_rtc.c211
-rw-r--r--sys/arm/ti/am335x/am335x_rtcreg.h76
-rw-r--r--sys/arm/ti/am335x/am335x_rtcvar.h34
-rw-r--r--sys/arm/ti/am335x/files.am335x1
-rw-r--r--sys/arm/ti/ti_prcm.h3
7 files changed, 363 insertions, 3 deletions
diff --git a/sys/arm/ti/am335x/am335x_pmic.c b/sys/arm/ti/am335x/am335x_pmic.c
index 462a2b8..4509f88 100644
--- a/sys/arm/ti/am335x/am335x_pmic.c
+++ b/sys/arm/ti/am335x/am335x_pmic.c
@@ -31,11 +31,13 @@ __FBSDID("$FreeBSD$");
*/
#include <sys/param.h>
#include <sys/systm.h>
+#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/clock.h>
#include <sys/time.h>
#include <sys/bus.h>
+#include <sys/reboot.h>
#include <sys/resource.h>
#include <sys/rman.h>
@@ -46,6 +48,8 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
+#include <arm/ti/am335x/am335x_rtcvar.h>
+
#include "iicbus_if.h"
#define TPS65217A 0x7
@@ -56,6 +60,10 @@ __FBSDID("$FreeBSD$");
/* TPS65217 Reisters */
#define TPS65217_CHIPID_REG 0x00
#define TPS65217_STATUS_REG 0x0A
+#define TPS65217_STATUS_OFF (1U << 7)
+#define TPS65217_STATUS_ACPWR (1U << 3)
+#define TPS65217_STATUS_USBPWR (1U << 2)
+#define TPS65217_STATUS_BT (1U << 0)
#define MAX_IIC_DATA_SIZE 2
@@ -66,6 +74,8 @@ struct am335x_pmic_softc {
struct intr_config_hook enum_hook;
};
+static void am335x_pmic_shutdown(void *, int);
+
static int
am335x_pmic_read(device_t dev, uint8_t addr, uint8_t *data, uint8_t size)
{
@@ -77,7 +87,6 @@ am335x_pmic_read(device_t dev, uint8_t addr, uint8_t *data, uint8_t size)
return (iicbus_transfer(dev, msg, 2));
}
-#ifdef notyet
static int
am335x_pmic_write(device_t dev, uint8_t address, uint8_t *data, uint8_t size)
{
@@ -95,7 +104,6 @@ am335x_pmic_write(device_t dev, uint8_t address, uint8_t *data, uint8_t size)
return (iicbus_transfer(dev, msg, 1));
}
-#endif
static int
am335x_pmic_probe(device_t dev)
@@ -146,6 +154,9 @@ am335x_pmic_start(void *xdev)
am335x_pmic_read(dev, TPS65217_STATUS_REG, &reg, 1);
device_printf(dev, "%s powered by %s\n", name, pwr[(reg>>2)&0x03]);
+ EVENTHANDLER_REGISTER(shutdown_final, am335x_pmic_shutdown, dev,
+ SHUTDOWN_PRI_LAST);
+
config_intrhook_disestablish(&sc->enum_hook);
}
@@ -165,6 +176,22 @@ am335x_pmic_attach(device_t dev)
return (0);
}
+static void
+am335x_pmic_shutdown(void *xdev, int howto)
+{
+ device_t dev;
+ uint8_t reg;
+
+ if (!(howto & RB_POWEROFF))
+ return;
+ dev = (device_t)xdev;
+ /* Set the OFF bit on status register to start the shutdown sequence. */
+ reg = TPS65217_STATUS_OFF;
+ am335x_pmic_write(dev, TPS65217_STATUS_REG, &reg, 1);
+ /* Toggle pmic_pwr_enable to shutdown the PMIC. */
+ am335x_rtc_pmic_pwr_toggle();
+}
+
static device_method_t am335x_pmic_methods[] = {
DEVMETHOD(device_probe, am335x_pmic_probe),
DEVMETHOD(device_attach, am335x_pmic_attach),
diff --git a/sys/arm/ti/am335x/am335x_prcm.c b/sys/arm/ti/am335x/am335x_prcm.c
index 325a838..0b89d95 100644
--- a/sys/arm/ti/am335x/am335x_prcm.c
+++ b/sys/arm/ti/am335x/am335x_prcm.c
@@ -118,6 +118,10 @@ __FBSDID("$FreeBSD$");
#define CLKSEL_TIMER6_CLK (CM_DPLL + 0x01C)
#define CLKSEL_PRUSS_OCP_CLK (CM_DPLL + 0x030)
+#define CM_RTC 0x800
+#define CM_RTC_RTC_CLKCTRL (CM_RTC + 0x000)
+#define CM_RTC_CLKSTCTRL (CM_RTC + 0x004)
+
#define PRM_PER 0xC00
#define PRM_PER_RSTCTRL (PRM_PER + 0x00)
@@ -295,7 +299,8 @@ struct ti_clock_dev ti_clk_devmap[] = {
.clk_get_source_freq = NULL,
},
-
+ /* RTC */
+ AM335X_GENERIC_CLOCK_DEV(RTC_CLK),
{ INVALID_CLK_IDENT, NULL, NULL, NULL, NULL }
};
@@ -363,6 +368,9 @@ static struct am335x_clk_details g_am335x_clk_details[] = {
_CLK_DETAIL(MAILBOX0_CLK, CM_PER_MAILBOX0_CLKCTRL, 0),
_CLK_DETAIL(SPINLOCK0_CLK, CM_PER_SPINLOCK0_CLKCTRL, 0),
+ /* RTC module */
+ _CLK_DETAIL(RTC_CLK, CM_RTC_RTC_CLKCTRL, 0),
+
{ INVALID_CLK_IDENT, 0},
};
diff --git a/sys/arm/ti/am335x/am335x_rtc.c b/sys/arm/ti/am335x/am335x_rtc.c
new file mode 100644
index 0000000..42a0f28
--- /dev/null
+++ b/sys/arm/ti/am335x/am335x_rtc.c
@@ -0,0 +1,211 @@
+/*-
+ * Copyright (c) 2015 Luiz Otavio O Souza <loos@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/clock.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/rman.h>
+
+#include <machine/bus.h>
+
+#include <dev/ofw/ofw_bus_subr.h>
+#include <arm/ti/ti_prcm.h>
+#include <arm/ti/am335x/am335x_rtcvar.h>
+#include <arm/ti/am335x/am335x_rtcreg.h>
+
+#define RTC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
+#define RTC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define RTC_LOCK_INIT(_sc) mtx_init(&(_sc)->sc_mtx, \
+ device_get_nameunit(_sc->sc_dev), "am335x_rtc", MTX_DEF)
+#define RTC_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx)
+
+#define RTC_READ4(_sc, reg) \
+ bus_read_4((_sc)->sc_mem_res, reg)
+#define RTC_WRITE4(_sc, reg, value) \
+ bus_write_4((_sc)->sc_mem_res, reg, value)
+
+#define RTC_MAXIRQS 2
+
+struct am335x_rtc_softc {
+ device_t sc_dev;
+ struct mtx sc_mtx;
+ struct resource *sc_irq_res[RTC_MAXIRQS];
+ struct resource *sc_mem_res;
+};
+
+static struct am335x_rtc_softc *rtc_sc = NULL;
+static struct resource_spec am335x_rtc_irq_spec[] = {
+ { SYS_RES_IRQ, 0, RF_ACTIVE },
+ { SYS_RES_IRQ, 1, RF_ACTIVE },
+ { -1, 0, 0 }
+};
+
+static int
+am335x_rtc_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+ if (!ofw_bus_is_compatible(dev, "ti,da830-rtc"))
+ return (ENXIO);
+ device_set_desc(dev, "AM335x RTC (power management mode)");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+am335x_rtc_attach(device_t dev)
+{
+ int rid;
+ struct am335x_rtc_softc *sc;
+ uint32_t rev;
+
+ if (rtc_sc != NULL)
+ return (ENXIO);
+ rtc_sc = sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+ rid = 0;
+ sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (!sc->sc_mem_res) {
+ device_printf(dev, "cannot allocate memory resources\n");
+ return (ENXIO);
+ }
+ if (bus_alloc_resources(dev, am335x_rtc_irq_spec, sc->sc_irq_res) != 0) {
+ bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
+ device_printf(dev, "cannot allocate irq resources\n");
+ return (ENXIO);
+ }
+ RTC_LOCK_INIT(sc);
+
+ /* Enable the RTC module. */
+ ti_prcm_clk_enable(RTC_CLK);
+ rev = RTC_READ4(sc, RTC_REVISION);
+ device_printf(dev, "AM335X RTC v%d.%d.%d\n",
+ (rev >> 8) & 0x7, (rev >> 6) & 0x3, rev & 0x3f);
+ /* Unlock the RTC. */
+ RTC_WRITE4(sc, RTC_KICK0R, RTC_KICK0R_PASS);
+ RTC_WRITE4(sc, RTC_KICK1R, RTC_KICK1R_PASS);
+ /* Stop the RTC, we don't need it right now. */
+ RTC_WRITE4(sc, RTC_CTRL, 0);
+ /* Disable interrupts. */
+ RTC_WRITE4(sc, RTC_INTR, 0);
+ /* Ack any pending interrupt. */
+ RTC_WRITE4(sc, RTC_STATUS, RTC_STATUS_ALARM2 | RTC_STATUS_ALARM);
+ /* Enable external clock (xtal) and 32 kHz clock. */
+ RTC_WRITE4(sc, RTC_OSC, RTC_OSC_32KCLK_EN | RTC_OSC_32KCLK_SEL);
+ /* Enable pmic_pwr_enable. */
+ RTC_WRITE4(sc, RTC_PMIC, PMIC_PWR_ENABLE);
+
+ return (0);
+}
+
+static int
+am335x_rtc_detach(device_t dev)
+{
+ struct am335x_rtc_softc *sc;
+
+ sc = device_get_softc(dev);
+ if (sc->sc_irq_res)
+ bus_release_resources(dev, am335x_rtc_irq_spec, sc->sc_irq_res);
+ if (sc->sc_mem_res)
+ bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
+ RTC_LOCK_DESTROY(sc);
+
+ return (0);
+}
+
+void
+am335x_rtc_pmic_pwr_toggle(void)
+{
+ int timeout;
+ struct clocktime ct;
+ struct timespec ts;
+
+ /*
+ * We stop the RTC so we don't need to check the STATUS.BUSY bit
+ * before update ALARM2 registers.
+ */
+ timeout = 10;
+ RTC_WRITE4(rtc_sc, RTC_CTRL, 0);
+ while (--timeout && RTC_READ4(rtc_sc, RTC_STATUS) & RTC_STATUS_RUN)
+ DELAY(100);
+ if (timeout == 0) {
+ device_printf(rtc_sc->sc_dev, "RTC does not stop.\n");
+ return;
+ }
+ /* Program the ALARM2 to fire in 2 seconds. */
+ ct.dow = 0;
+ ct.nsec = 0;
+ ct.sec = FROMBCD(RTC_READ4(rtc_sc, RTC_SECONDS) & 0x7f);
+ ct.min = FROMBCD(RTC_READ4(rtc_sc, RTC_MINUTES) & 0x7f);
+ ct.hour = FROMBCD(RTC_READ4(rtc_sc, RTC_HOURS) & 0x3f);
+ ct.day = FROMBCD(RTC_READ4(rtc_sc, RTC_DAYS) & 0x3f);
+ ct.mon = FROMBCD(RTC_READ4(rtc_sc, RTC_MONTHS) & 0x1f);
+ ct.year = FROMBCD(RTC_READ4(rtc_sc, RTC_YEARS) & 0xff);
+ ct.year += POSIX_BASE_YEAR;
+ clock_ct_to_ts(&ct, &ts);
+ ts.tv_sec += 2;
+ clock_ts_to_ct(&ts, &ct);
+ RTC_WRITE4(rtc_sc, RTC_ALARM2_SECONDS, TOBCD(ct.sec));
+ RTC_WRITE4(rtc_sc, RTC_ALARM2_MINUTES, TOBCD(ct.min));
+ RTC_WRITE4(rtc_sc, RTC_ALARM2_HOURS, TOBCD(ct.hour));
+ RTC_WRITE4(rtc_sc, RTC_ALARM2_DAYS, TOBCD(ct.day));
+ RTC_WRITE4(rtc_sc, RTC_ALARM2_MONTHS, TOBCD(ct.mon));
+ RTC_WRITE4(rtc_sc, RTC_ALARM2_YEARS, TOBCD(ct.year - POSIX_BASE_YEAR));
+ /* Enable ALARM2 interrupt. */
+ RTC_WRITE4(rtc_sc, RTC_INTR, RTC_INTR_ALARM2);
+ /* Start count. */
+ RTC_WRITE4(rtc_sc, RTC_CTRL, RTC_CTRL_RUN);
+}
+
+static device_method_t am335x_rtc_methods[] = {
+ DEVMETHOD(device_probe, am335x_rtc_probe),
+ DEVMETHOD(device_attach, am335x_rtc_attach),
+ DEVMETHOD(device_detach, am335x_rtc_detach),
+
+ DEVMETHOD_END
+};
+
+static driver_t am335x_rtc_driver = {
+ "am335x_rtc",
+ am335x_rtc_methods,
+ sizeof(struct am335x_rtc_softc),
+};
+
+static devclass_t am335x_rtc_devclass;
+
+DRIVER_MODULE(am335x_rtc, simplebus, am335x_rtc_driver, am335x_rtc_devclass, 0, 0);
+MODULE_VERSION(am335x_rtc, 1);
+MODULE_DEPEND(am335x_rtc, simplebus, 1, 1, 1);
diff --git a/sys/arm/ti/am335x/am335x_rtcreg.h b/sys/arm/ti/am335x/am335x_rtcreg.h
new file mode 100644
index 0000000..a4b5cc8
--- /dev/null
+++ b/sys/arm/ti/am335x/am335x_rtcreg.h
@@ -0,0 +1,76 @@
+/*-
+ * Copyright 2015 Luiz Otavio O Souza <loos@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _AM335X_RTCREG_H_
+#define _AM335X_RTCREG_H_
+
+#define RTC_SECONDS 0x00
+#define RTC_MINUTES 0x04
+#define RTC_HOURS 0x08
+#define RTC_DAYS 0x0c
+#define RTC_MONTHS 0x10
+#define RTC_YEARS 0x14
+#define RTC_WEEK 0x18
+#define RTC_CTRL 0x40
+#define RTC_CTRL_DISABLE (1U << 6)
+#define RTC_CTRL_RUN (1U << 0)
+#define RTC_STATUS 0x44
+#define RTC_STATUS_ALARM2 (1U << 7)
+#define RTC_STATUS_ALARM (1U << 6)
+#define RTC_STATUS_1D_EVENT (1U << 5)
+#define RTC_STATUS_1H_EVENT (1U << 4)
+#define RTC_STATUS_1M_EVENT (1U << 3)
+#define RTC_STATUS_1S_EVENT (1U << 2)
+#define RTC_STATUS_RUN (1U << 1)
+#define RTC_STATUS_BUSY (1U << 0)
+#define RTC_INTR 0x48
+#define RTC_INTR_ALARM2 (1U << 4)
+#define RTC_INTR_ALARM (1U << 3)
+#define RTC_INTR_TIMER (1U << 2)
+#define RTC_OSC 0x54
+#define RTC_OSC_32KCLK_EN (1U << 6)
+#define RTC_OSC_OSC32K_GZ (1U << 4)
+#define RTC_OSC_32KCLK_SEL (1U << 3)
+#define RTC_OSC_RES_SELECT (1U << 2)
+#define RTC_OSC_SW2 (1U << 1)
+#define RTC_OSC_SW1 (1U << 0)
+#define RTC_KICK0R 0x6c
+#define RTC_KICK0R_PASS 0x83e70b13
+#define RTC_KICK1R 0x70
+#define RTC_KICK1R_PASS 0x95a4f1e0
+#define RTC_REVISION 0x74
+#define RTC_ALARM2_SECONDS 0x80
+#define RTC_ALARM2_MINUTES 0x84
+#define RTC_ALARM2_HOURS 0x88
+#define RTC_ALARM2_DAYS 0x8c
+#define RTC_ALARM2_MONTHS 0x90
+#define RTC_ALARM2_YEARS 0x94
+#define RTC_PMIC 0x98
+#define PMIC_PWR_ENABLE (1U << 16)
+
+#endif /* _AM335X_RTCREG_H_ */
diff --git a/sys/arm/ti/am335x/am335x_rtcvar.h b/sys/arm/ti/am335x/am335x_rtcvar.h
new file mode 100644
index 0000000..330f082
--- /dev/null
+++ b/sys/arm/ti/am335x/am335x_rtcvar.h
@@ -0,0 +1,34 @@
+/*-
+ * Copyright 2015 Luiz Otavio O Souza <loos@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _AM335X_RTCVAR_H_
+#define _AM335X_RTCVAR_H_
+
+void am335x_rtc_pmic_pwr_toggle(void);
+
+#endif /* _AM335X_RTCVAR_H_ */
diff --git a/sys/arm/ti/am335x/files.am335x b/sys/arm/ti/am335x/files.am335x
index 3bb44e3..3a9f2b4 100644
--- a/sys/arm/ti/am335x/files.am335x
+++ b/sys/arm/ti/am335x/files.am335x
@@ -8,6 +8,7 @@ arm/ti/am335x/am335x_lcd_syscons.c optional sc
arm/ti/am335x/am335x_pmic.c optional am335x_pmic
arm/ti/am335x/am335x_prcm.c standard
arm/ti/am335x/am335x_pwm.c standard
+arm/ti/am335x/am335x_rtc.c optional am335x_rtc
arm/ti/am335x/am335x_scm_padconf.c standard
arm/ti/am335x/am335x_usbss.c optional musb fdt
diff --git a/sys/arm/ti/ti_prcm.h b/sys/arm/ti/ti_prcm.h
index c0683b7..5cbdc5f 100644
--- a/sys/arm/ti/ti_prcm.h
+++ b/sys/arm/ti/ti_prcm.h
@@ -164,6 +164,9 @@ typedef enum {
TSC_ADC_CLK = 1800,
+ /* RTC module */
+ RTC_CLK = 1900,
+
INVALID_CLK_IDENT
} clk_ident_t;
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