From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Shawn Lin <shawn.lin@rock-chips.com>,
Alexey Charkov <alchark@gmail.com>,
Hugh Cole-Baker <sigmaris@gmail.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15.y] mmc: sdhci-of-dwcmshc: Change DLL_STRBIN_TAPNUM_DEFAULT to 0x4
Date: Thu, 20 Nov 2025 20:45:42 -0500 [thread overview]
Message-ID: <20251121014542.2332865-1-sashal@kernel.org> (raw)
In-Reply-To: <2025112055-suspense-expiring-db69@gregkh>
From: Shawn Lin <shawn.lin@rock-chips.com>
[ Upstream commit a28352cf2d2f8380e7aca8cb61682396dca7a991 ]
strbin signal delay under 0x8 configuration is not stable after massive
test. The recommandation of it should be 0x4.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Alexey Charkov <alchark@gmail.com>
Tested-by: Hugh Cole-Baker <sigmaris@gmail.com>
Fixes: 08f3dff799d4 ("mmc: sdhci-of-dwcmshc: add rockchip platform support")
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mmc/host/sdhci-of-dwcmshc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index 335c88fd849c4..eb7213a8b5ea8 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -49,7 +49,7 @@
#define DWCMSHC_EMMC_DLL_INC 8
#define DWCMSHC_EMMC_DLL_DLYENA BIT(27)
#define DLL_TXCLK_TAPNUM_DEFAULT 0x8
-#define DLL_STRBIN_TAPNUM_DEFAULT 0x8
+#define DLL_STRBIN_TAPNUM_DEFAULT 0x4
#define DLL_TXCLK_TAPNUM_FROM_SW BIT(24)
#define DLL_RXCLK_NO_INVERTER 1
#define DLL_RXCLK_INVERTER 0
--
2.51.0
prev parent reply other threads:[~2025-11-21 1:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-20 16:13 FAILED: patch "[PATCH] mmc: sdhci-of-dwcmshc: Change DLL_STRBIN_TAPNUM_DEFAULT to" failed to apply to 5.15-stable tree gregkh
2025-11-21 1:45 ` Sasha Levin [this message]
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