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| author | Stefan Christ <s.christ@phytec.de> | 2016-04-27 12:04:39 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-05-02 08:10:15 +0200 |
| commit | 90b2fa7e386d4c2806780f32c2dbbba772bdbad2 (patch) | |
| tree | 34581038fa6be15dab9198fa061423f5e66a9478 /arch | |
| parent | 6444998184e26f2883d364d2a4296a9dafb06fe1 (diff) | |
| download | barebox-90b2fa7e386d4c2806780f32c2dbbba772bdbad2.tar.gz barebox-90b2fa7e386d4c2806780f32c2dbbba772bdbad2.tar.xz | |
ARM: dts: imx6: phyboards: reduce clock speed for usdhc3
Due to hardware issues the usdhc3 interface on phyBOARD-ALCOR i.MX6 and
phyBOARD-SUBRA i.MX6 doesn't work reliable at 50Mhz. You get
communication errors like
barebox@Phytec phyBOARD SUBRA:/ ls /mnt/mmc/
mmc2: detected SD card version 2.0
mmc2: registered mmc2
imx-esdhc 2198000.usdhc: timeout 2
mmc2: Cannot read MBR/partition table
Therefore reduce the maximum clock speed to avoid these problems.
Signed-off-by: Stefan Christ <s.christ@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/dts/imx6q-phytec-phyboard-alcor.dts | 1 | ||||
| -rw-r--r-- | arch/arm/dts/imx6qdl-phytec-phyboard-subra.dtsi | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/dts/imx6q-phytec-phyboard-alcor.dts b/arch/arm/dts/imx6q-phytec-phyboard-alcor.dts index a60fc186e2..1c4a78552d 100644 --- a/arch/arm/dts/imx6q-phytec-phyboard-alcor.dts +++ b/arch/arm/dts/imx6q-phytec-phyboard-alcor.dts @@ -35,4 +35,5 @@ &usdhc3 { status = "okay"; + max-frequency = <25000000>; /* 25 Mhz */ }; diff --git a/arch/arm/dts/imx6qdl-phytec-phyboard-subra.dtsi b/arch/arm/dts/imx6qdl-phytec-phyboard-subra.dtsi index 1efc632e62..a38765b142 100644 --- a/arch/arm/dts/imx6qdl-phytec-phyboard-subra.dtsi +++ b/arch/arm/dts/imx6qdl-phytec-phyboard-subra.dtsi @@ -26,4 +26,5 @@ &usdhc3 { status = "okay"; + max-frequency = <25000000>; /* 25 Mhz */ }; |