Save set clock in mmc_host actual_clock enabling exporting it via debugfs. This will indicate the precise SD clock in I/O settings rather than only the sometimes misleading requested clock.
Signed-off-by: Tamás Szűcs <[email protected]> --- drivers/mmc/host/renesas_sdhi_core.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 64d3b5fb7fe5..ae842d0b59f9 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -124,7 +124,7 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host, { struct renesas_sdhi *priv = host_to_priv(host); unsigned int freq, diff, best_freq = 0, diff_min = ~0; - int i, ret; + int i; /* tested only on R-Car Gen2+ currently; may work for others */ if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2)) @@ -153,9 +153,11 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host, } } - ret = clk_set_rate(priv->clk, best_freq); + host->mmc->actual_clock = + clk_set_rate(priv->clk, best_freq) == 0 ? + best_freq : clk_get_rate(priv->clk); - return ret == 0 ? best_freq : clk_get_rate(priv->clk); + return host->mmc->actual_clock; } static void renesas_sdhi_set_clock(struct tmio_mmc_host *host, -- 2.11.0
