From da29fe2bf573f0ae56fdc2e790387cb73fc8c6f8 Mon Sep 17 00:00:00 2001 From: Shinobu Uehara Date: Sun, 24 Aug 2014 20:03:00 -0700 Subject: mmc: tmio: add actual clock support as option Some controller is supporting actual clock on SD_CLK_CTRL :: DIV[7:0]. Renesas SH-Mobile SDHI doesn't support, but, Renesas R-Car SDHI supports it. This patch adds new TMIO_MMC_CLK_ACTUAL flag for it. [Kuninori Morimoto: tidyuped for upstreaming] Tested-by: Nguyen Xuan Nui Tested-by: Hiep Cao Minh Signed-off-by: Shinobu Uehara Signed-off-by: Kuninori Morimoto Signed-off-by: Ulf Hansson --- drivers/mmc/host/tmio_mmc_pio.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/mmc/host/tmio_mmc_pio.c') diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index 7cfe939992de..ba454131f9a8 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -159,6 +159,11 @@ static void tmio_mmc_set_clock(struct tmio_mmc_host *host, for (clock = host->mmc->f_min, clk = 0x80000080; new_clock >= (clock<<1); clk >>= 1) clock <<= 1; + + /* 1/1 clock is option */ + if ((host->pdata->flags & TMIO_MMC_CLK_ACTUAL) && + ((clk >> 22) & 0x1)) + clk |= 0xff; } if (host->set_clk_div) -- cgit