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From:   Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
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Subject: [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc
Thread-Topic: [PATCH v2] ARM: dts: imx7-colibri: Fix frequency for sd/mmc
Thread-Index: AQHV5yYW1MJ7wsEAJkO5IbqDZXMXGg==
Date:   Wed, 19 Feb 2020 13:11:24 +0000
Message-ID: <20200219131121.3565738-1-oleksandr.suvorov@toradex.com>
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SD/MMC on Colibri iMX7S/D modules successfully support
200Mhz frequency in HS200 mode.

Removing the unnecessary max-frequency limit significantly
increases the performance:

=3D=3D before fix =3D=3D=3D=3D
root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
 Timing buffered disk reads: 252 MB in  3.02 seconds =3D  83.54 MB/sec
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D after fix =3D=3D=3D=3D
root@colibri-imx7-emmc:~# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
 Timing buffered disk reads: 408 MB in  3.00 seconds =3D 135.94 MB/sec
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Fixes: f928a4a377e4 ("ARM: dts: imx7: add Toradex Colibri iMX7D 1GB (eMMC) =
support")
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
---

Changes in v2:
- keep the Fixes tag in the single line

 arch/arm/boot/dts/imx7-colibri.dtsi | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-c=
olibri.dtsi
index d05be3f0e2a7..04717cf69db0 100644
--- a/arch/arm/boot/dts/imx7-colibri.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri.dtsi
@@ -336,7 +336,6 @@ &usdhc3 {
 	assigned-clock-rates =3D <400000000>;
 	bus-width =3D <8>;
 	fsl,tuning-step =3D <2>;
-	max-frequency =3D <100000000>;
 	vmmc-supply =3D <&reg_module_3v3>;
 	vqmmc-supply =3D <&reg_DCDC3>;
 	non-removable;
--=20
2.24.1