From: Xuebing Wang <xbing6@gmail.com>
To: linux-mmc@vger.kernel.org, Shawn Guo <shawn.guo@linaro.org>,
Sascha Hauer <kernel@pengutronix.de>,
fabio.estavam@freescale.com, Ulf Hansson <ulf.hansson@linaro.org>,
balbi@ti.com, niranjan Patil <Niranjan.Patil@infocus.com>,
richard Jiang <Richard.Jiang@infocus.com>
Subject: /dev/mmcblk0 (or /dev/mmcblk0p1) does not exist on Freescale iMX6SL board
Date: Thu, 30 Apr 2015 17:20:12 +0800 [thread overview]
Message-ID: <5541F3CC.4090000@gmail.com> (raw)
Hi linux-mmc community,
I am working on a board which is very similar to Freescale iMX6SL EVK
(evaluation board), but /dev/mmcblk0 does not exist for kernel v4.0.1
A bit of background information. I was working on kernel 3.10.17, all
eMMC works fine, except that USB Mass Storage performance is low when
connecting USB to Windows 7 host. Its peformance is ok when connecting
to MacOS or Linux host. linux-usb community suggests me to give a try of
the latest kernel.
Here is how I build uImage and device tree blob:
make ARCH=arm imx_v6_v7_defconfig
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- LOADADDR=0x80008000
uImage -j8
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- LOADADDR=0x80008000
imx6sl-evk.dtb
My u-boot resides on eMMC, and I am using tftp (to load uImage and dtb)
and nfs-rootfs.
---------------------------------
# uname -r
4.0.1
# dmesg | grep mmc
[ 1.282872] Driver 'mmcblk' needs updating - please use bus_type methods
[ 1.309598] sdhci-esdhc-imx 2190000.usdhc: No vmmc regulator found
[ 1.315809] sdhci-esdhc-imx 2190000.usdhc: No vqmmc regulator found
[ 1.367511] mmc0: SDHCI controller on 2190000.usdhc [2190000.usdhc]
using ADMA
[ 1.378980] sdhci-esdhc-imx 2194000.usdhc: No vmmc regulator found
[ 1.385191] sdhci-esdhc-imx 2194000.usdhc: No vqmmc regulator found
[ 1.437440] mmc1: SDHCI controller on 2194000.usdhc [2194000.usdhc]
using ADMA
[ 1.449272] sdhci-esdhc-imx 2198000.usdhc: No vmmc regulator found
[ 1.455479] sdhci-esdhc-imx 2198000.usdhc: No vqmmc regulator found
[ 1.507338] mmc2: SDHCI controller on 2198000.usdhc [2198000.usdhc]
using ADMA
$ arm-none-linux-gnueabi-gcc --version
arm-none-linux-gnueabi-gcc (Sourcery CodeBench Lite 2013.05-24) 4.7.3
Copyright (C) 2012 Free Software Foundation, Inc.
---------------------------------
Any suggestions?
--
Xuebing
next reply other threads:[~2015-04-30 9:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-30 9:20 Xuebing Wang [this message]
2015-04-30 12:16 ` /dev/mmcblk0 (or /dev/mmcblk0p1) does not exist on Freescale iMX6SL board Fabio Estevam
2015-04-30 12:44 ` Xuebing Wang
2015-04-30 12:51 ` Fabio Estevam
2015-04-30 13:01 ` Xuebing Wang
2015-04-30 13:06 ` Fabio Estevam
2015-04-30 13:15 ` Xuebing Wang
2015-05-01 10:39 ` Xuebing Wang
2015-05-01 15:03 ` Fabio Estevam
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