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-rw-r--r--drivers/mmc/host/pxamci.c31
1 files changed, 22 insertions, 9 deletions
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 1654a3330340..80df4b047c81 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -375,14 +375,23 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (host->clkrt == CLKRT_OFF)
clk_enable(host->clk);
- /*
- * clk might result in a lower divisor than we
- * desire. check for that condition and adjust
- * as appropriate.
- */
- if (rate / clk > ios->clock)
- clk <<= 1;
- host->clkrt = fls(clk) - 1;
+ if (ios->clock == 26000000) {
+ /* to support 26MHz on pxa300/pxa310 */
+ host->clkrt = 7;
+ } else {
+ /* to handle (19.5MHz, 26MHz) */
+ if (!clk)
+ clk = 1;
+
+ /*
+ * clk might result in a lower divisor than we
+ * desire. check for that condition and adjust
+ * as appropriate.
+ */
+ if (rate / clk > ios->clock)
+ clk <<= 1;
+ host->clkrt = fls(clk) - 1;
+ }
/*
* we write clkrt on the next command
@@ -519,7 +528,8 @@ static int pxamci_probe(struct platform_device *pdev)
* Calculate minimum clock rate, rounding up.
*/
mmc->f_min = (host->clkrate + 63) / 64;
- mmc->f_max = host->clkrate;
+ mmc->f_max = (cpu_is_pxa300() || cpu_is_pxa310()) ? 26000000
+ : host->clkrate;
mmc->ocr_avail = host->pdata ?
host->pdata->ocr_mask :
@@ -529,6 +539,9 @@ static int pxamci_probe(struct platform_device *pdev)
if (!cpu_is_pxa21x() && !cpu_is_pxa25x()) {
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
host->cmdat |= CMDAT_SDIO_INT_EN;
+ if (cpu_is_pxa300() || cpu_is_pxa310())
+ mmc->caps |= MMC_CAP_MMC_HIGHSPEED |
+ MMC_CAP_SD_HIGHSPEED;
}
host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);