linux-kernel - Re: [PATCH v2 RESEND 1/2] ARM: vexpress: Remove non-DT code

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1417189984.4371.12.camel@arm.com>
Date:	Fri, 28 Nov 2014 15:53:04 +0000
From:	Pawel Moll <pawel.moll@....com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"arm@...nel.org" <arm@...nel.org>,
	Mike Turquette <mturquette@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Liviu Dudau <Liviu.Dudau@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sudeep Holla <Sudeep.Holla@....com>
Subject: Re: [PATCH v2 RESEND 1/2] ARM: vexpress: Remove non-DT code

On Fri, 2014-11-28 at 15:30 +0000, Russell King - ARM Linux wrote:
> mmci-pl18x 10005000.mmci: no support for card's volts
> mmc0: error -22 whilst initialising SD card

Just tried it again:

--8<----------------------------
ARM Versatile Express Boot Monitor
Version:    V5.2.1
Build Date: Apr  4 2013
Daughterboard Site 1: V2P-CA9 Cortex A9
Daughterboard Site 2: Not Used
Running boot script from flash - BOOTSCRIPT
Loaded FDT - ca9
Loaded initrd - busybox
Copied 0x400000 bytes from 0x48000000 to 0x60008000
Booting kernel @ 0x60008000
Command line 'console=ttyAMA0,38400 earlyprintk debug '
initrd @ 0x70000000 (4127012 bytes)
FDT @ 0x69000000 (14048 bytes)
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Initializing cgroup subsys cpuset
Linux version 3.18.0-rc6+ (pawmol01@...net) (gcc version 4.9.2 20140904 (prerelease) (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09) ) #1442 SMP Mon Nov 24 16:43:30 GMT 2014
CPU: ARMv7 Processor [410fc091] revision 1 (ARMv7), cr=10c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine model: V2P-CA9
bootconsole [earlycon0] enabled
[...]
mmci-pl18x 10005000.mmci: Got CD GPIO
mmci-pl18x 10005000.mmci: Got WP GPIO
mmci-pl18x 10005000.mmci: Looking up vmmc-supply from device tree
mmci-pl18x 10005000.mmci: Looking up vqmmc-supply from device tree
mmci-pl18x 10005000.mmci: Looking up vqmmc-supply property in node /smb/motherboard/iofpga@7,00000000/mmci@...00 failed
mmci-pl18x 10005000.mmci: No vqmmc regulator found
mmci-pl18x 10005000.mmci: mmc0: PL180 manf 41 rev0 at 0x10005000 irq 41,42 (pio)
[...]
mmc0: new SD card at address 88f7
mmcblk0: mmc0:88f7 SD02G 1.84 GiB 
 mmcblk0: p1 p2
[...]
/ # mount /dev/mmcblk0p2 /mnt
EXT2-fs (mmcblk0p2): warning: mounting unchecked fs, running e2fsck is recommended
--8<------------------------------------

vmmc-supply is a defined as:

				vmmc-supply = <&v2m_fixed_3v3>;

which is:

                v2m_fixed_3v3: fixedregulator@0 {
                        compatible = "regulator-fixed";

and arch/arm/mach-vexpress/Kconfig says:

menuconfig ARCH_VEXPRESS
[...]
        select REGULATOR_FIXED_VOLTAGE if REGULATOR

but it doesn't select REGULATOR in result of this discussion:

http://thread.gmane.org/gmane.linux.ports.arm.kernel/223426/focus=223427

To summarize, I believe that setting CONFIG_REGULATOR=y (as in
vexpress_defconfig) should solve your issue.

Pawel

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/