From 46d4820f949a3030b19ee482c68a50b06dd27590 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 4 Apr 2022 12:05:08 +0200 Subject: [PATCH] mmc: renesas_sdhi: special 4tap settings only apply to HS400 Previous documentation was vague, so we included SDR104 for slow SDnH clock settings. It turns out now, that it is only needed for HS400. Fixes: bb6d3fa98a41 ("clk: renesas: rcar-gen3: Switch to new SD clock handling") Cc: stable@vger.kernel.org Reported-by: Yoshihiro Shimoda Signed-off-by: Wolfram Sang Reviewed-by: Yoshihiro Shimoda Link: https://lore.kernel.org/r/20220404100508.3209-1-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/renesas_sdhi_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 2797a9c..2a4d314 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -144,9 +144,9 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host, return clk_get_rate(priv->clk); if (priv->clkh) { + /* HS400 with 4TAP needs different clock settings */ bool use_4tap = priv->quirks && priv->quirks->hs400_4taps; - bool need_slow_clkh = (host->mmc->ios.timing == MMC_TIMING_UHS_SDR104) || - (host->mmc->ios.timing == MMC_TIMING_MMC_HS400); + bool need_slow_clkh = host->mmc->ios.timing == MMC_TIMING_MMC_HS400; clkh_shift = use_4tap && need_slow_clkh ? 1 : 2; ref_clk = priv->clkh; } -- 2.7.4