target/linux/brcm2708/patches-3.10/0016-Allow-emmc-clock-to-be-specified-as-command-line-par.patch

   1 From f3cbdb41b8e7194b03523eceed5dd8b488f93909 Mon Sep 17 00:00:00 2001
   2 From: popcornmix <popcornmix@gmail.com>
   3 Date: Sat, 16 Jun 2012 22:31:55 +0100
   4 Subject: [PATCH 016/196] Allow emmc clock to be specified as command line
   5  parameter
   6
   7 ---
   8  drivers/mmc/host/sdhci-bcm2708.c | 6 +++++-
   9  1 file changed, 5 insertions(+), 1 deletion(-)
  10
  11 diff --git a/drivers/mmc/host/sdhci-bcm2708.c b/drivers/mmc/host/sdhci-bcm2708.c
  12 index d174938..0ee983c 100644
  13 --- a/drivers/mmc/host/sdhci-bcm2708.c
  14 +++ b/drivers/mmc/host/sdhci-bcm2708.c
  15 @@ -130,6 +130,7 @@ static inline unsigned long int since_ns(hptime_t t)
  16  }
  17
  18  static bool allow_highspeed = 1;
  19 +static int emmc_clock_freq = BCM2708_EMMC_CLOCK_FREQ;
  20
  21  #if 0
  22  static void hptime_test(void)
  23 @@ -355,7 +356,7 @@ void sdhci_bcm2708_writeb(struct sdhci_host *host, u8 val, int reg)
  24
  25  static unsigned int sdhci_bcm2708_get_max_clock(struct sdhci_host *host)
  26  {
  27 -       return BCM2708_EMMC_CLOCK_FREQ;
  28 +       return emmc_clock_freq;
  29  }
  30
  31  /*****************************************************************************\
  32 @@ -1361,6 +1362,7 @@ module_init(sdhci_drv_init);
  33  module_exit(sdhci_drv_exit);
  34
  35  module_param(allow_highspeed, bool, 0444);
  36 +module_param(emmc_clock_freq, int, 0444);
  37
  38  MODULE_DESCRIPTION("Secure Digital Host Controller Interface platform driver");
  39  MODULE_AUTHOR("Broadcom <info@broadcom.com>");
  40 @@ -1368,4 +1370,6 @@ MODULE_LICENSE("GPL v2");
  41  MODULE_ALIAS("platform:"DRIVER_NAME);
  42
  43  MODULE_PARM_DESC(allow_highspeed, "Allow high speed transfers modes");
  44 +MODULE_PARM_DESC(emmc_clock_freq, "Specify the speed of emmc clock");
  45 +
  46
  47 --
  48 1.9.1
  49