diff options
| author | Patrick Wildt <patrick@cvs.openbsd.org> | 2018-06-10 09:25:51 +0000 |
|---|---|---|
| committer | Patrick Wildt <patrick@cvs.openbsd.org> | 2018-06-10 09:25:51 +0000 |
| commit | b6e0d0b03279ca885ad6e2759078f12698a0778e (patch) | |
| tree | 57130e34e53191d15bff9972531d76e13c5f696c /sys | |
| parent | 553f236eb5289308ffde7e12e938136e489b896b (diff) | |
Extract the i2c bitrate from imxiic(4)'s clock-frequency attribute.
ok kettenis@
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/fdt/imxiic.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/sys/dev/fdt/imxiic.c b/sys/dev/fdt/imxiic.c index ae9aa9f1700..930d6fb0ef9 100644 --- a/sys/dev/fdt/imxiic.c +++ b/sys/dev/fdt/imxiic.c @@ -1,4 +1,4 @@ -/* $OpenBSD: imxiic.c,v 1.3 2018/05/18 15:58:17 kettenis Exp $ */ +/* $OpenBSD: imxiic.c,v 1.4 2018/06/10 09:25:50 patrick Exp $ */ /* * Copyright (c) 2013 Patrick Wildt <patrick@blueri.se> * @@ -54,6 +54,7 @@ struct imxiic_softc { bus_size_t sc_ios; void *sc_ih; int sc_node; + int sc_bitrate; struct rwlock sc_buslock; struct i2c_controller i2c_tag; @@ -133,8 +134,10 @@ imxiic_attach(struct device *parent, struct device *self, void *aux) /* set iomux pins */ pinctrl_byname(faa->fa_node, "default"); - /* set speed to 100kHz */ - imxiic_setspeed(sc, 100); + /* set speed */ + sc->sc_bitrate = OF_getpropint(sc->sc_node, + "clock-frequency", 100000) / 1000; + imxiic_setspeed(sc, sc->sc_bitrate); /* reset */ HWRITE2(sc, I2C_I2CR, 0); @@ -322,8 +325,8 @@ imxiic_i2c_acquire_bus(void *cookie, int flags) /* clock gating */ clock_enable(sc->sc_node, NULL); - /* set speed to 100kHz */ - imxiic_setspeed(sc, 100); + /* set speed */ + imxiic_setspeed(sc, sc->sc_bitrate); /* enable the controller */ HWRITE2(sc, I2C_I2SR, 0); |