The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 97bf85b6ec9e6597ce81c79b26a28f7918fc4eaf Mon Sep 17 00:00:00 2001
From: Wolfram Sang wsa+renesas@sang-engineering.com Date: Thu, 6 Jun 2019 13:35:35 +0200 Subject: [PATCH] mmc: sdhi: disallow HS400 for M3-W ES1.2, RZ/G2M, and V3H MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
Our HW engineers informed us that HS400 is not working on these SoC revisions.
Fixes: 0f4e2054c971 ("mmc: renesas_sdhi: disable HS400 on H3 ES1.x and M3-W ES1.[012]") Signed-off-by: Wolfram Sang wsa+renesas@sang-engineering.com Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Fabrizio Castro fabrizio.castro@bp.renesas.com Reviewed-by: Niklas Söderlund niklas.soderlund+renesas@ragnatech.se Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson ulf.hansson@linaro.org
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 5e9e36ed2107..5f8d57ac084f 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -620,11 +620,16 @@ static const struct renesas_sdhi_quirks sdhi_quirks_h3_es2 = { .hs400_4taps = true, };
+static const struct renesas_sdhi_quirks sdhi_quirks_nohs400 = { + .hs400_disabled = true, +}; + static const struct soc_device_attribute sdhi_quirks_match[] = { { .soc_id = "r8a7795", .revision = "ES1.*", .data = &sdhi_quirks_h3_m3w_es1 }, { .soc_id = "r8a7795", .revision = "ES2.0", .data = &sdhi_quirks_h3_es2 }, - { .soc_id = "r8a7796", .revision = "ES1.0", .data = &sdhi_quirks_h3_m3w_es1 }, - { .soc_id = "r8a7796", .revision = "ES1.1", .data = &sdhi_quirks_h3_m3w_es1 }, + { .soc_id = "r8a7796", .revision = "ES1.[012]", .data = &sdhi_quirks_h3_m3w_es1 }, + { .soc_id = "r8a774a1", .revision = "ES1.[012]", .data = &sdhi_quirks_h3_m3w_es1 }, + { .soc_id = "r8a77980", .data = &sdhi_quirks_nohs400 }, { /* Sentinel. */ }, };