Messages in this thread Patch in this message | | | From | Kishon Vijay Abraham I <> | Subject | [PATCH 05/41] mmc: host: omap_hsmmc: Set clk rate to the max frequency | Date | Fri, 19 May 2017 13:45:05 +0530 |
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Set the clock rate of the functional clock to the max frequency that is passed to the driver either using pdata or dt.
Also remove unnecessary setting of host->fclk to NULL.
This is in preparation for supporting high frequency modes of operation.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> --- drivers/mmc/host/omap_hsmmc.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 4dbf75ad2376..77be27c8e18c 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -2244,22 +2244,29 @@ static int omap_hsmmc_probe(struct platform_device *pdev) mmc->ops = &omap_hsmmc_ops; - mmc->f_min = OMAP_MMC_MIN_CLOCK; - - if (pdata->max_freq > 0) - mmc->f_max = pdata->max_freq; - else if (mmc->f_max == 0) - mmc->f_max = OMAP_MMC_MAX_CLOCK; - spin_lock_init(&host->irq_lock); host->fclk = devm_clk_get(&pdev->dev, "fck"); if (IS_ERR(host->fclk)) { ret = PTR_ERR(host->fclk); - host->fclk = NULL; goto err1; } + mmc->f_min = OMAP_MMC_MIN_CLOCK; + if (pdata->max_freq > 0) + mmc->f_max = pdata->max_freq; + + if (mmc->f_max) { + ret = clk_set_rate(host->fclk, mmc->f_max); + if (ret) { + dev_err(&pdev->dev, "failed to set clock to %d\n", + mmc->f_max); + goto err1; + } + } else { + mmc->f_max = OMAP_MMC_MAX_CLOCK; + } + if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) { dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n"); omap_hsmmc_ops.multi_io_quirk = omap_hsmmc_multi_io_quirk; -- 2.11.0
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