From: linux.amoon@gmail.com (Anand Moon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] ARM64: dts: meson: update maximum frequency for sdcard to 200MHz
Date: Wed, 2 May 2018 00:29:02 +0530 [thread overview]
Message-ID: <20180501185902.3556-2-linux.amoon@gmail.com> (raw)
In-Reply-To: <20180501185902.3556-1-linux.amoon@gmail.com>
update the maximum frequency of the sdcard to 200Mhz
to support high speed read/write with uhs mode.
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
odroid at odroid64:~$ sudo cat /sys/kernel/debug/mmc1/ios
[sudo] password for odroid:
clock: 200000000 Hz
actual clock: 200000000 Hz
vdd: 21 (3.3 ~ 3.4 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/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index c90f8b46c60c..ab868eaddb46 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -256,7 +256,7 @@
bus-width = <4>;
cap-sd-highspeed;
- max-frequency = <100000000>;
+ max-frequency = <200000000>;
disable-wp;
sd-uhs-sdr12;
sd-uhs-sdr25;
--
2.17.0
next prev parent reply other threads:[~2018-05-01 18:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-01 18:59 [PATCH 1/2] ARM64: dts: meson-gxbb: odroidc2: enable sdcard UHS modes Anand Moon
2018-05-01 18:59 ` Anand Moon [this message]
2018-05-14 13:48 ` Jerome Brunet
2018-05-15 5:34 ` Anand Moon
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