1 /*-
41 #include <dev/fdt/simplebus.h>
42 #include <dev/ofw/openfirm.h>
43 #include <dev/ofw/ofw_bus.h>
44 #include <dev/ofw/ofw_bus_subr.h>
48 #include <dev/syscon/syscon.h>
60 /* TRM chapter 2 memory map table 2-3 + VER register location */
72 	struct syscon           *syscon;  member
84 am335x_pwmss_probe(device_t dev)  in am335x_pwmss_probe()  argument
87 	if (!ofw_bus_status_okay(dev))  in am335x_pwmss_probe()
90 	if (!ofw_bus_is_compatible(dev, "ti,am33xx-pwmss"))  in am335x_pwmss_probe()
93 	device_set_desc(dev, "AM335x PWM");  in am335x_pwmss_probe()
99 am335x_pwmss_attach(device_t dev)  in am335x_pwmss_attach()  argument
106 	sc = device_get_softc(dev);  in am335x_pwmss_attach()
107 	sc->sc_dev = dev;  in am335x_pwmss_attach()
109 	/* FIXME: For now; Go and kidnap syscon from opp-table */  in am335x_pwmss_attach()
110 	opp_table = OF_finddevice("/opp-table");  in am335x_pwmss_attach()
111 	if (opp_table == -1) {  in am335x_pwmss_attach()
112 		device_printf(dev, "Cant find /opp-table\n");  in am335x_pwmss_attach()
115 	if (!OF_hasprop(opp_table, "syscon")) {  in am335x_pwmss_attach()
116 		device_printf(dev, "/opp-table doesnt have required syscon property\n");  in am335x_pwmss_attach()
119 	if (syscon_get_by_ofw_property(dev, opp_table, "syscon", &sc->syscon) != 0) {  in am335x_pwmss_attach()
120 		device_printf(dev, "Failed to get syscon\n");  in am335x_pwmss_attach()
124 	ti_sysc_clock_enable(device_get_parent(dev));  in am335x_pwmss_attach()
126 	rev_address = ti_sysc_get_rev_address(device_get_parent(dev));  in am335x_pwmss_attach()
139 	reg = SYSCON_READ_4(sc->syscon, SCM_PWMSS_CTRL);  in am335x_pwmss_attach()
141 	SYSCON_WRITE_4(sc->syscon, SCM_PWMSS_CTRL, reg);  in am335x_pwmss_attach()
143 	node = ofw_bus_get_node(dev);  in am335x_pwmss_attach()
145 	if (node == -1)  in am335x_pwmss_attach()
148 	simplebus_init(dev, node);  in am335x_pwmss_attach()
153 	bus_identify_children(dev);  in am335x_pwmss_attach()
156 	 * Now walk the OFW tree and attach top-level devices.  in am335x_pwmss_attach()
159 		simplebus_add_device(dev, node, 0, NULL, -1, NULL);  in am335x_pwmss_attach()
161 	bus_attach_children(dev);  in am335x_pwmss_attach()
166 am335x_pwmss_detach(device_t dev)  in am335x_pwmss_detach()  argument