svn commit: r287213 - head/sys/dev/mmc/host

[Andrew Turner]

Author: andrew
Date: Thu Aug 27 16:24:30 2015
New Revision: 287213
URL: https://svnweb.freebsd.org/changeset/base/287213

Log:
  Limit the speed to the bus frequency.
  
  Sponsored by:	ABT Systems Ltd

Modified:
  head/sys/dev/mmc/host/dwmmc.c

Modified: head/sys/dev/mmc/host/dwmmc.c
==============================================================================
--- head/sys/dev/mmc/host/dwmmc.c	Thu Aug 27 16:18:22 2015	(r287212)
+++ head/sys/dev/mmc/host/dwmmc.c	Thu Aug 27 16:24:30 2015	(r287213)
@@ -651,7 +651,7 @@ dwmmc_attach(device_t dev)
 	WRITE4(sc, SDMMC_CTRL, SDMMC_CTRL_INT_ENABLE);
 
 	sc->host.f_min = 400000;
-	sc->host.f_max = 200000000;
+	sc->host.f_max = min(200000000, sc->bus_hz);
 	sc->host.host_ocr = MMC_OCR_320_330 | MMC_OCR_330_340;
 	sc->host.caps = MMC_CAP_4_BIT_DATA;