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>
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: [PATCHv4 3/6] ARM: dts: exynos: update maximum frequency for sdcard to 200MHz
Date: Sat, 22 Sep 2018 07:52:35 +0000 [thread overview]
Message-ID: <20180922075238.884-5-linux.amoon@gmail.com> (raw)
In-Reply-To: <20180922075238.884-1-linux.amoon@gmail.com>
set the max-frequency to 200MHz for optimal performace.
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
This patch is new to this series.
microSD card.
root@odroid:~# sudo cat /sys/kernel/debug/mmc1/ios
clock: 200000000 Hz
actual clock: 200000000 Hz
vdd: 16 (2.8 ~ 2.9 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 2 (4 bits)
timing spec: 6 (sd uhs SDR104)
signal voltage: 1 (1.80 V)
driver type: 0 (driver type B)
---
arch/arm/boot/dts/exynos5422-odroid-core.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
index 15ab380e5fcf..a80b6c045154 100644
--- a/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroid-core.dtsi
@@ -501,6 +501,7 @@
pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus1 &sd2_bus4>;
bus-width = <4>;
cap-sd-highspeed;
+ max-frequency = <200000000>;
vmmc-supply = <&ldo19_reg>;
vqmmc-supply = <&ldo13_reg>;
sd-uhs-sdr50;
--
2.17.1
next prev parent reply other threads:[~2018-09-22 7:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-22 7:52 [PATCHv4 0/6] Add support for UHS-I on Exynos5422 odroid boards Anand Moon
2018-09-22 7:52 ` Anand Moon
2018-09-26 19:07 ` Krzysztof Kozlowski
2018-09-22 7:52 ` [PATCHv4 1/6] ARM: dts: exynos: Added UHS-I bus speed support Anand Moon
2018-09-22 7:52 ` [PATCHv4 2/6] ARM: dts: exynos: fix regulator min values of LDO13 for Odroid XU3/XU4 Anand Moon
2018-09-22 7:52 ` Anand Moon [this message]
2018-09-22 7:52 ` [PATCHv4 4/6] ARM: dts: exynos: Add CD and WP pins to Odroid XU3/XU4 SD card Anand Moon
2018-09-26 19:06 ` Krzysztof Kozlowski
2018-09-27 3:45 ` Anand Moon
2018-09-27 6:28 ` Krzysztof Kozlowski
2018-09-22 7:52 ` [PATCHv4 5/6] ARM: dts: exynos: update maximum frequency for emmc to 200MHz Anand Moon
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