Author: imp Date: Tue Nov 18 17:07:02 2014 New Revision: 274669 URL: https://svnweb.freebsd.org/changeset/base/274669
Log: These delays aren't needed. Elimate them. They should be on the order of a few cycles at most, not 10us. They make it impossible to implement half-duplex protocols that are faster than about 1KHz. Sponsored by: Netflix Modified: head/sys/arm/broadcom/bcm2835/bcm2835_gpio.c Modified: head/sys/arm/broadcom/bcm2835/bcm2835_gpio.c ============================================================================== --- head/sys/arm/broadcom/bcm2835/bcm2835_gpio.c Tue Nov 18 17:06:56 2014 (r274668) +++ head/sys/arm/broadcom/bcm2835/bcm2835_gpio.c Tue Nov 18 17:07:02 2014 (r274669) @@ -238,9 +238,7 @@ bcm_gpio_set_pud(struct bcm_gpio_softc * offset = pin - 32 * bank; BCM_GPIO_WRITE(sc, BCM_GPIO_GPPUD(0), state); - DELAY(10); BCM_GPIO_WRITE(sc, BCM_GPIO_GPPUDCLK(bank), (1 << offset)); - DELAY(10); BCM_GPIO_WRITE(sc, BCM_GPIO_GPPUD(0), 0); BCM_GPIO_WRITE(sc, BCM_GPIO_GPPUDCLK(bank), 0); } _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"