diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_core.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 426229842a05..fcf7235d5742 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -460,10 +460,11 @@ static int renesas_sdhi_multi_io_quirk(struct mmc_card *card, static void renesas_sdhi_enable_dma(struct tmio_mmc_host *host, bool enable) { - sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? DMA_ENABLE_DMASDRW : 0); + /* Iff regs are 8 byte apart, sdbuf is 64 bit. Otherwise always 32. */ + int width = (host->bus_shift == 2) ? 64 : 32; - /* enable 32bit access if DMA mode if possibile */ - renesas_sdhi_sdbuf_width(host, enable ? 32 : 16); + sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? DMA_ENABLE_DMASDRW : 0); + renesas_sdhi_sdbuf_width(host, enable ? width : 16); } int renesas_sdhi_probe(struct platform_device *pdev, |