From: Stefan Christ <s.christ@phytec.de>
To: barebox@lists.infradead.org
Subject: [PATCH for next 05/15] ARM: dts: imx6: phyboards: reduce clock speed for usdhc3
Date: Wed, 27 Apr 2016 12:04:39 +0200 [thread overview]
Message-ID: <1461751489-13302-6-git-send-email-s.christ@phytec.de> (raw)
In-Reply-To: <1461751489-13302-1-git-send-email-s.christ@phytec.de>
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>
---
arch/arm/dts/imx6q-phytec-phyboard-alcor.dts | 1 +
arch/arm/dts/imx6qdl-phytec-phyboard-subra.dtsi | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm/dts/imx6q-phytec-phyboard-alcor.dts b/arch/arm/dts/imx6q-phytec-phyboard-alcor.dts
index a60fc18..1c4a785 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 1efc632..a38765b 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 */
};
--
1.9.1
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next prev parent reply other threads:[~2016-04-27 10:05 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 10:04 [PATCH for next 00/15] New Phytec i.MX6 Patches Stefan Christ
2016-04-27 10:04 ` [PATCH for next 01/15] ARM: imx_v7_defconfig: enable NANDTEST command Stefan Christ
2016-04-27 10:04 ` [PATCH for next 02/15] ARM: imx_v7_defconfig: add command mmc_extcsd Stefan Christ
2016-04-27 10:04 ` [PATCH for next 03/15] ARM: imx6q: add support for phyBOARD-SUBRA-i.MX6 Quad Stefan Christ
2016-04-27 10:04 ` [PATCH for next 04/15] imx6qdl-phytec-pfla02.dtsi: add i2c eeprom Stefan Christ
2016-04-27 10:04 ` Stefan Christ [this message]
2016-04-27 10:04 ` [PATCH for next 06/15] ARM: dts: pfla02: use long enough reset for ethernet phy Stefan Christ
2016-04-27 10:04 ` [PATCH for next 07/15] ARM: phytec-som-imx6: add barebox partitions for MMC Stefan Christ
2016-04-27 10:04 ` [PATCH for next 08/15] ARM: phytec-som-imx6: add boot device emmc and automount Stefan Christ
2016-04-28 8:34 ` Sascha Hauer
2016-04-28 11:56 ` Holger Schurig
2016-04-28 20:31 ` Trent Piepho
2016-04-29 7:25 ` Stefan Christ
2016-05-02 7:51 ` Sascha Hauer
2016-05-02 9:03 ` Stefan Christ
2016-05-03 7:12 ` Sascha Hauer
2016-04-27 10:04 ` [PATCH for next 09/15] ARM: phytec-som-imx6: fix bootsource for phyCORE-i.MX6 Stefan Christ
2016-04-27 10:04 ` [PATCH for next 10/15] ARM: phytec-som-imx6: add phyCORE-i.MX6 Quad 2GiB RAM Stefan Christ
2016-04-27 10:04 ` [PATCH for next 11/15] ARM: phytec-som-imx6: add phyCORE-i.MX6 DualLite Stefan Christ
2016-04-27 10:04 ` [PATCH for next 12/15] ARM: phytec-som-imx6: update RAM calibration for phycore-imx6dl Stefan Christ
2016-04-27 10:04 ` [PATCH for next 13/15] ARM: phytec-som-imx6: rename environment folder Stefan Christ
2016-04-27 10:04 ` [PATCH for next 14/15] ARM: phytec-som-imx6: adapt main update handler for eMMC Stefan Christ
2016-04-27 10:04 ` [PATCH for next 15/15] ARM: phytec-som-imx6: add NOR for phycore-imx6 emmc Stefan Christ
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