>> >> 1. support 8 bit data transfer width > 8 bit buswidth patch is already merged to mm tree. > > http://marc.info/?l=linux-mmc&m=127783663526810&w=3 > > Thank you, > Kyungmin Park > Thanks Kyungmin, updated without 8 bit support. >From 2b717444443acdac90c5f31522a1515a2000749a Mon Sep 17 00:00:00 2001 From: Zhangfei Gao <zgao6@xxxxxxxxxxx> Date: Fri, 6 Aug 2010 07:10:01 +0800 Subject: [PATCH] sdhc: support 10-bit divided clock Mode Signed-off-by: Zhangfei Gao <zgao6@xxxxxxxxxxx> --- drivers/mmc/host/sdhci.c | 5 +++-- drivers/mmc/host/sdhci.h | 4 ++++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index c6d1bd8..212dc9e 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1002,7 +1002,8 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) } div >>= 1; - clk = div << SDHCI_DIVIDER_SHIFT; + clk = (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; + clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIVIDER_SHIFT) << SDHCI_DIVIDER_SHIFT_HI; clk |= SDHCI_CLOCK_INT_EN; sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); @@ -1681,7 +1682,7 @@ int sdhci_add_host(struct sdhci_host *host) host->version = sdhci_readw(host, SDHCI_HOST_VERSION); host->version = (host->version & SDHCI_SPEC_VER_MASK) >> SDHCI_SPEC_VER_SHIFT; - if (host->version > SDHCI_SPEC_200) { + if (host->version > SDHCI_SPEC_300) { printk(KERN_ERR "%s: Unknown controller version (%d). " "You may experience problems.\n", mmc_hostname(mmc), host->version); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index c846813..7c09b4f 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -85,6 +85,9 @@ #define SDHCI_CLOCK_CONTROL 0x2C #define SDHCI_DIVIDER_SHIFT 8 +#define SDHCI_DIVIDER_SHIFT_HI 6 +#define SDHCI_DIV_MASK 0xFF +#define SDHCI_DIV_HI_MASK 0x300 #define SDHCI_CLOCK_CARD_EN 0x0004 #define SDHCI_CLOCK_INT_STABLE 0x0002 #define SDHCI_CLOCK_INT_EN 0x0001 @@ -177,6 +180,7 @@ #define SDHCI_SPEC_VER_SHIFT 0 #define SDHCI_SPEC_100 0 #define SDHCI_SPEC_200 1 +#define SDHCI_SPEC_300 2 struct sdhci_ops; -- 1.6.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
