From: Anand Moon <linux.amoon@gmail.com>
To: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Jaehoon Chung <jh80.chung@samsung.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Marek Szyprowski <m.szyprowski@samsung.com>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mmc@vger.kernel.org
Subject: [PATCHv5 5/6] ARM: dts: exynos: update maximum frequency for emmc to 200MHz
Date: Thu, 27 Sep 2018 14:07:37 +0000 [thread overview]
Message-ID: <20180927140738.1006-6-linux.amoon@gmail.com> (raw)
In-Reply-To: <20180927140738.1006-1-linux.amoon@gmail.com>
Set the max-frequency to 200MHz for optimal performace of eMMC.
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
eMMC
root@odroid:~# sudo cat /sys/kernel/debug/mmc0/ios
clock: 200000000 Hz
actual clock: 200000000 Hz
vdd: 7 (1.65 - 1.95 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 3 (8 bits)
timing spec: 10 (mmc HS400)
signal voltage: 1 (1.80 V)
driver type: 0 (driver type B)
---
arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
index e522edb2bb82..1f2d3987dde1 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
@@ -392,6 +392,7 @@
cap-mmc-highspeed;
mmc-hs200-1_8v;
mmc-hs400-1_8v;
+ max-frequency = <200000000>;
vmmc-supply = <&ldo18_reg>;
vqmmc-supply = <&ldo3_reg>;
};
--
2.17.1
next prev parent reply other threads:[~2018-09-27 14:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-27 14:07 [PATCHv5 0/6] Add support for UHS-I on Exynos5422 odroid boards Anand Moon
2018-09-27 14:07 ` [PATCHv5 1/6] ARM: dts: exynos: Added UHS-I bus speed support Anand Moon
2018-11-13 19:29 ` Krzysztof Kozlowski
2018-09-27 14:07 ` [PATCHv5 2/6] ARM: dts: exynos: fix regulator min values of LDO13 for Odroid XU3/XU4 Anand Moon
2018-11-13 19:32 ` Krzysztof Kozlowski
2018-09-27 14:07 ` [PATCHv5 3/6] ARM: dts: exynos: update maximum frequency for sdcard to 200MHz Anand Moon
2018-11-13 19:38 ` Krzysztof Kozlowski
2018-09-27 14:07 ` [PATCHv5 4/6] ARM: dts: exynos: Add pin configuration for SD write protect on Odroid XU3/XU4 Anand Moon
2018-11-13 19:54 ` Krzysztof Kozlowski
2018-09-27 14:07 ` Anand Moon [this message]
2018-11-13 19:49 ` [PATCHv5 5/6] ARM: dts: exynos: update maximum frequency for emmc to 200MHz Krzysztof Kozlowski
2018-09-27 14:07 ` [PATCHv5 6/6] mmc: dw_mmc-exynos: Add tuning for sdr and ddr timing for USH-I mode Anand Moon
2018-10-08 11:51 ` [PATCHv5 0/6] Add support for UHS-I on Exynos5422 odroid boards Ulf Hansson
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