linux-kernel - [PATCH] arm64: dts: uniphier: add input-delay properties to Cadence eMMC node

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Date:   Fri, 31 Mar 2017 13:20:45 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-mtd@...ts.infradead.org
Cc:     Piotr Sroka <piotrs@...ence.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] arm64: dts: uniphier: add input-delay properties to Cadence eMMC node

Since commit a04e2b383401 ("mmc: sdhci-cadence: Update PHY delay
configuration"), PHY parameters must be specified by DT.

The hard-coded settings have been converted as follows:
- SDHCI_CDNS_PHY_DLY_SD_DEFAULT -> cdns,phy-input-delay-legacy
- SDHCI_CDNS_PHY_DLY_EMMC_SDR   -> cdns,phy-input-delay-mmc-highspeed
- SDHCI_CDNS_PHY_DLY_EMMC_DDR   -> cdns,phy-input-delay-mmc-ddr

The following have not been moved:
- SDHCI_CDNS_PHY_DLY_SD_HS
   this is unneeded in the eMMC configuration
- SDHCI_CDNS_PHY_DLY_EMMC_LEGACY
   this is never enabled by the driver as it is covered by
   SDHCI_CDNS_PHY_DLY_SD_DEFAULT

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi | 3 +++
 arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
index 5dc5124..b6ebdc9 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
@@ -310,6 +310,9 @@
 			bus-width = <8>;
 			mmc-ddr-1_8v;
 			mmc-hs200-1_8v;
+			cdns,phy-input-delay-legacy = <4>;
+			cdns,phy-input-delay-mmc-highspeed = <2>;
+			cdns,phy-input-delay-mmc-ddr = <3>;
 		};
 
 		usb0: usb@...00100 {
diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
index 6c9a72d..0ab6c2e 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
@@ -394,6 +394,9 @@
 			bus-width = <8>;
 			mmc-ddr-1_8v;
 			mmc-hs200-1_8v;
+			cdns,phy-input-delay-legacy = <4>;
+			cdns,phy-input-delay-mmc-highspeed = <2>;
+			cdns,phy-input-delay-mmc-ddr = <3>;
 		};
 
 		sd: sdhc@...00000 {
-- 
2.7.4