brcm2708: update against latest rpi-3.10.y branch
[openwrt/svn-archive/archive.git] / target / linux / brcm2708 / patches-3.10 / 0015-sdhci-bcm2708-assume-50-MHz-eMMC-clock.patch
1 From 55ed27d2c44fcf2e808ba26cc2a1c9c4041500da 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 015/174] 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 --- a/drivers/mmc/host/sdhci-bcm2708.c
14 +++ b/drivers/mmc/host/sdhci-bcm2708.c
15 @@ -73,7 +73,7 @@
16 #define BCM2708_SDHCI_SLEEP_TIMEOUT 1000 /* msecs */
17
18 /* Mhz clock that the EMMC core is running at. Should match the platform clockman settings */
19 -#define BCM2708_EMMC_CLOCK_FREQ 80000000
20 +#define BCM2708_EMMC_CLOCK_FREQ 50000000
21
22 /*****************************************************************************\
23 * *