target/linux/brcm2708/patches-3.10/0015-sdhci-bcm2708-assume-50-MHz-eMMC-clock.patch

   1 From 4e5732952c3c2f14058bd7dbcba67d911d77bd39 Mon Sep 17 00:00:00 2001
   2 From: Grigori Goronzy <greg@blackbox>
   3 Date: Mon, 11 Jun 2012 18:58:40 +0200
   4 Subject: [PATCH 015/196] sdhci-bcm2708: assume 50 MHz eMMC clock
   5
   6 80 MHz clock isnt't suited well to be dividable to get SD clocks of 25
   7 MHz (default mode) or 50 MHz (high speed mode). 50 MHz are perfect to
   8 drive the SD interface at ideal frequencies.
   9 ---
  10  drivers/mmc/host/sdhci-bcm2708.c | 2 +-
  11  1 file changed, 1 insertion(+), 1 deletion(-)
  12
  13 diff --git a/drivers/mmc/host/sdhci-bcm2708.c b/drivers/mmc/host/sdhci-bcm2708.c
  14 index c64de21..d174938 100644
  15 --- a/drivers/mmc/host/sdhci-bcm2708.c
  16 +++ b/drivers/mmc/host/sdhci-bcm2708.c
  17 @@ -73,7 +73,7 @@
  18  #define BCM2708_SDHCI_SLEEP_TIMEOUT 1000   /* msecs */
  19
  20  /* Mhz clock that the EMMC core is running at. Should match the platform clockman settings */
  21 -#define BCM2708_EMMC_CLOCK_FREQ 80000000
  22 +#define BCM2708_EMMC_CLOCK_FREQ 50000000
  23
  24  /*****************************************************************************\
  25   *                                                                          *
  26 --
  27 1.9.1
  28