linux-kernel - [PATCH 5.1 003/121] mmc: sdhi: disallow HS400 for M3-W ES1.2, RZ/G2M, and V3H

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Message-Id: <20190624092320.828212800@linuxfoundation.org>
Date:   Mon, 24 Jun 2019 17:55:35 +0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Fabrizio Castro <fabrizio.castro@...renesas.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 5.1 003/121] mmc: sdhi: disallow HS400 for M3-W ES1.2, RZ/G2M, and V3H

From: Wolfram Sang <wsa+renesas@...g-engineering.com>

commit 97bf85b6ec9e6597ce81c79b26a28f7918fc4eaf upstream.

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@...g-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Fabrizio Castro <fabrizio.castro@...renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
Cc: stable@...r.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/host/renesas_sdhi_core.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

--- 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
 	.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. */ },
 };