From 8ec6a04b6bf641f13402506c0f1b1d9dda699b51 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Wed, 13 Jun 2018 08:02:55 +0200 Subject: mmc: tmio: Switch to clock framework Switch the driver to using clk_get_rate()/clk_set_rate() instead of caching the mclk frequency in it's private data. This is required on the SDHI variant of the controller, where the upstream mclk need to be adjusted when using UHS modes. Platforms which do not support clock framework or do not support it in eg. SPL default to 100 MHz clock. Signed-off-by: Marek Vasut Cc: Masahiro Yamada --- V2: - Fix build on certain platforms using SPL without clock framework V3: - Turn clk_get_rate into a callback and fill it as needed on both renesas and socionext platforms --- drivers/mmc/tmio-common.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'drivers/mmc/tmio-common.c') diff --git a/drivers/mmc/tmio-common.c b/drivers/mmc/tmio-common.c index 0eca83a..3ba2f07 100644 --- a/drivers/mmc/tmio-common.c +++ b/drivers/mmc/tmio-common.c @@ -555,16 +555,24 @@ static void tmio_sd_set_ddr_mode(struct tmio_sd_priv *priv, tmio_sd_writel(priv, tmp, TMIO_SD_IF_MODE); } +static ulong tmio_sd_clk_get_rate(struct tmio_sd_priv *priv) +{ + return priv->clk_get_rate(priv); +} + static void tmio_sd_set_clk_rate(struct tmio_sd_priv *priv, struct mmc *mmc) { unsigned int divisor; u32 val, tmp; + ulong mclk; if (!mmc->clock) return; - divisor = DIV_ROUND_UP(priv->mclk, mmc->clock); + mclk = tmio_sd_clk_get_rate(priv); + + divisor = DIV_ROUND_UP(mclk, mmc->clock); if (divisor <= 1) val = (priv->caps & TMIO_SD_CAP_RCAR) ? @@ -708,6 +716,7 @@ int tmio_sd_probe(struct udevice *dev, u32 quirks) struct tmio_sd_priv *priv = dev_get_priv(dev); struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); fdt_addr_t base; + ulong mclk; int ret; base = devfdt_get_addr(dev); @@ -750,10 +759,12 @@ int tmio_sd_probe(struct udevice *dev, u32 quirks) tmio_sd_host_init(priv); + mclk = tmio_sd_clk_get_rate(priv); + plat->cfg.voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34; - plat->cfg.f_min = priv->mclk / + plat->cfg.f_min = mclk / (priv->caps & TMIO_SD_CAP_DIV1024 ? 1024 : 512); - plat->cfg.f_max = priv->mclk; + plat->cfg.f_max = mclk; plat->cfg.b_max = U32_MAX; /* max value of TMIO_SD_SECCNT */ upriv->mmc = &plat->mmc; -- cgit v1.1