linux-kernel - [PATCH 4.16 088/279] arm64: dts: uniphier: fix input delay value for legacy mode of eMMC

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Date:   Mon, 18 Jun 2018 10:11:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.16 088/279] arm64: dts: uniphier: fix input delay value for legacy mode of eMMC

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Masahiro Yamada <yamada.masahiro@...ionext.com>

[ Upstream commit f4e5200fc0d7dad75c688e7ccc0652481a916df5 ]

The property of the legacy mode for the eMMC PHY turned out to
be wrong.  Some eMMC devices are unstable due to the set-up/hold
timing violation.  Correct the delay value.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi |    2 +-
 arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi |    2 +-
 arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

--- a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
@@ -330,7 +330,7 @@
 			mmc-ddr-1_8v;
 			mmc-hs200-1_8v;
 			mmc-pwrseq = <&emmc_pwrseq>;
-			cdns,phy-input-delay-legacy = <4>;
+			cdns,phy-input-delay-legacy = <9>;
 			cdns,phy-input-delay-mmc-highspeed = <2>;
 			cdns,phy-input-delay-mmc-ddr = <3>;
 			cdns,phy-dll-delay-sdclk = <21>;
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
@@ -435,7 +435,7 @@
 			mmc-ddr-1_8v;
 			mmc-hs200-1_8v;
 			mmc-pwrseq = <&emmc_pwrseq>;
-			cdns,phy-input-delay-legacy = <4>;
+			cdns,phy-input-delay-legacy = <9>;
 			cdns,phy-input-delay-mmc-highspeed = <2>;
 			cdns,phy-input-delay-mmc-ddr = <3>;
 			cdns,phy-dll-delay-sdclk = <21>;
--- a/arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi
@@ -336,7 +336,7 @@
 			mmc-ddr-1_8v;
 			mmc-hs200-1_8v;
 			mmc-pwrseq = <&emmc_pwrseq>;
-			cdns,phy-input-delay-legacy = <4>;
+			cdns,phy-input-delay-legacy = <9>;
 			cdns,phy-input-delay-mmc-highspeed = <2>;
 			cdns,phy-input-delay-mmc-ddr = <3>;
 			cdns,phy-dll-delay-sdclk = <21>;