Re: Common ARM context save/restore code
On Fri, Oct 8, 2010 at 12:55 AM, Nicolas Pitre nicolas.pi...@linaro.org wrote: On Thu, 7 Oct 2010, Vishwanath Sripathy wrote: Hi All, Purpose of this email is to debate on the pros and cons of having a common ARM context save/restore code. Currently each SOC has its own way of saving/restoring ARM registers and there has been a proposal to have a common code for the same instead of duplicating the same in different places. Hm, what? Could you elaborate? I'm afraid I'm not following you. The kernel as I know it has a common code path to save/restore registers on context switch simply because all SOCs that I'm aware of all have the same general registers to save/restore on context switch. There are exceptions for some specialized registers, such as the XScale WMMX registers, the Cirrus MaverickCrunch registers, the VFP registers or the emulated FPA registers, etc. But those are nicely abstracted away from the common code through runtime registered thread notifier callbacks. I think what you are referring to is General Purpose ARM Registers which I agree are saved whenever there is a context switch. What I am talking here is other ARM registers like various Auxiliary Control regs (refer to arch/arm/mach_omap2/sleep34xx.s for complete details) which are completely lost when MPU enters OFF state in CPU Idle/suspend path. Vishwa Nicolas ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
[PATCH] cpufreq, cpuidle clock for MOP500 hrefp
Hi,
Please find attached 3 patches for :
- enabling cpuidle feature on MOP500 hrefp
- making cpufreq stat available for powertop
- adding debugfs clock tree for powerdebug
These patches have been tested on the latest
//git.linaro.org/bsp/st-ericsson/linux-2.6.34-ux500
Vincent
From 5bd1f1a5ecc7ce6d812215a474869fcf2e10c1e4 Mon Sep 17 00:00:00 2001
From: Vincent Guittot vincent.guit...@stericsson.com
Date: Mon, 11 Oct 2010 09:23:18 +0200
Subject: [PATCH] cpufreq_getspeed can't return negative value
---
arch/arm/mach-ux500/cpufreq.c |4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-ux500/cpufreq.c b/arch/arm/mach-ux500/cpufreq.c
index 4454a08..ea01240 100755
--- a/arch/arm/mach-ux500/cpufreq.c
+++ b/arch/arm/mach-ux500/cpufreq.c
@@ -100,7 +100,9 @@ unsigned int u8500_getspeed(unsigned int cpu)
case ARM_50_OPP: return freq_table[1].frequency;
case ARM_100_OPP: return freq_table[2].frequency;
default:
- return -EINVAL;
+ /* During boot, the returned value is undefined */
+ /* In this case, we set the max frequency */
+ return freq_table[2].frequency;
}
return 0;
}
--
1.7.0.4
From 30af0d6dbfb4d7b988d360685e62356b7267e5e6 Mon Sep 17 00:00:00 2001
From: Vincent Guittot vincent.guit...@stericsson.com
Date: Mon, 11 Oct 2010 09:22:10 +0200
Subject: [PATCH] Enable u8500_MOP cpuidle
---
arch/arm/configs/mop500_power_defconfig |6 +-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/arm/configs/mop500_power_defconfig b/arch/arm/configs/mop500_power_defconfig
index 4ab12e7..f2a4ca3 100755
--- a/arch/arm/configs/mop500_power_defconfig
+++ b/arch/arm/configs/mop500_power_defconfig
@@ -8,6 +8,7 @@ CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_STACKTRACE_SUPPORT=y
@@ -237,6 +238,7 @@ CONFIG_UX500_SOC_DB8500=y
# CONFIG_MACH_U8500_SIMULATOR is not set
# CONFIG_MACH_U5500_SIMULATOR is not set
CONFIG_MACH_U8500_MOP=y
+CONFIG_U8500_CPUIDLE=y
CONFIG_U8500_CPUFREQ=y
CONFIG_U8500_PM=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
@@ -373,7 +375,9 @@ CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
-# CONFIG_CPU_IDLE is not set
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
#
# Floating point emulation
--
1.7.0.4
From b74cb7996249589cd5d02111e468fb13d96a Mon Sep 17 00:00:00 2001
From: Vincent Guittot vincent.guit...@stericsson.com
Date: Fri, 8 Oct 2010 17:29:49 +0200
Subject: [PATCH] add debugfs support for powerdebug
---
arch/arm/mach-ux500/clock.c | 145 ++
arch/arm/mach-ux500/clock.h |4 +
2 files changed, 135 insertions(+), 14 deletions(-)
diff --git a/arch/arm/mach-ux500/clock.c b/arch/arm/mach-ux500/clock.c
index b89be26..fb54622 100755
--- a/arch/arm/mach-ux500/clock.c
+++ b/arch/arm/mach-ux500/clock.c
@@ -801,10 +801,6 @@ int __init clk_init(void)
return 0;
}
-#ifdef CONFIG_DEBUG_FS
-#include linux/debugfs.h
-#include linux/seq_file.h
-
static LIST_HEAD(clocks);
static DEFINE_MUTEX(clocks_mutex);
@@ -1075,6 +1071,10 @@ static void clk_register(struct clk *clk)
mutex_unlock(clocks_mutex);
}
+#ifdef CONFIG_DEBUG_FS
+#include linux/debugfs.h
+#include linux/seq_file.h
+
/*
* The following makes it possible to view the status (especially reference
* count and reset status) for the clocks in the platform by looking into the
@@ -1166,19 +1166,136 @@ static const struct file_operations u8500_clocks_operations = {
.release= seq_release,
};
-static int __init init_clk_read_debugfs(void)
+/*
+ * debugfs support to trace clock tree hierarchy and attributes with
+ * powerdebug
+ */
+static struct dentry *clk_debugfs_root;
+
+static int clk_debugfs_register_one(struct clk *c)
+{
+ int err;
+ struct dentry *d, *child, *child_tmp;
+ struct clk *pap = c-parent_periph;
+ struct clk *pac = c-parent_cluster;
+ char s[255];
+ char *p = s;
+
+ if (c-name == NULL)
+ p += sprintf(p, BUG);
+ else
+ p += sprintf(p, %s, c-name);
+
+ d = debugfs_create_dir(s, pac ? pac-dent_cluster : clk_debugfs_root);
+ if (!d)
+ return -ENOMEM;
+ c-dent_cluster = d;
+
+ d = debugfs_create_u8(usecount, S_IRUGO, c-dent_cluster, (u8 *)c-enabled);
+ if (!d) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+ d = debugfs_create_u32(rate, S_IRUGO, c-dent_cluster, (u32 *)c-rate);
+ if (!d) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+#if 0
+ /* not currently available in ux500 */
+ d = debugfs_create_x32(flags, S_IRUGO, c-dent_cluster, (u32 *)c-flags);
+ if (!d) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+#endif
+
+ if(pap) {
+ d = debugfs_create_dir(s, pap-dent_periph ? pap-dent_periph : pap-dent_cluster);
+ if (!d) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+ c-dent_periph = d;
+
+ d = debugfs_create_u8(usecount, S_IRUGO,
Re: [PATCH] cpufreq, cpuidle clock for MOP500 hrefp
On 10 Oct 11, Vincent Guittot wrote: Hi, Please find attached 3 patches for : - enabling cpuidle feature on MOP500 hrefp - making cpufreq stat available for powertop - adding debugfs clock tree for powerdebug These patches have been tested on the latest //git.linaro.org/bsp/st-ericsson/linux-2.6.34-ux500 Vincent Thanks Vincent. So with these patches, the ux500 platform can be used with cpufreq and cpuidle and works correctly with the powertop and powerdebug tools we have? Is the same true for the ux500 code in mainline? Does it support cpufreq, cpuidle? Just a brief comment below, regarding the patch. From 5bd1f1a5ecc7ce6d812215a474869fcf2e10c1e4 Mon Sep 17 00:00:00 2001 From: Vincent Guittot vincent.guit...@stericsson.com Date: Mon, 11 Oct 2010 09:23:18 +0200 Subject: [PATCH] cpufreq_getspeed can't return negative value --- arch/arm/mach-ux500/cpufreq.c |4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-ux500/cpufreq.c b/arch/arm/mach-ux500/cpufreq.c index 4454a08..ea01240 100755 --- a/arch/arm/mach-ux500/cpufreq.c +++ b/arch/arm/mach-ux500/cpufreq.c @@ -100,7 +100,9 @@ unsigned int u8500_getspeed(unsigned int cpu) case ARM_50_OPP: return freq_table[1].frequency; case ARM_100_OPP: return freq_table[2].frequency; default: - return -EINVAL; + /* During boot, the returned value is undefined */ + /* In this case, we set the max frequency */ + return freq_table[2].frequency; freq_table[2] will break if another frequency is added to the table. I recommend defining something like a MAX_NUM_FREQ for the table and using that in the driver. } return 0; } -- 1.7.0.4 ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: linaro-media-create speedup
Yes I think this is well within the realm of the possible. Regards Tom On Oct 11, 2010, at 5:20 AM, Robert Berger gm...@reliableembeddedsystems.com wrote: Hi, I guess a major speedup could be achieved by not again partitioning the SD card once it has been partitioned, but just copy over rootfs, boot loader, kernel and friends instead. Do you think this could be done. Regards, Robert ...Giving up on assembly language was the apple in our Garden of Eden: Languages whose use squanders machine cycles are sinful.(Epigrams in Programming, ACM SIGPLAN Sept. 1982) My public pgp key is available at: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x90320BF1 ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Cortex A9 vexpress MMC I/O problems.
Hi. I have a Cortex A9 vexpress board and I've been trying some of the headless daily builds as described here : https://wiki.linaro.org/Platform/QA/TestCases/HeadlessVexpress. The instructions are based around the MMC card with uboot, kernel and rootfs all loaded via this interface. I've had mixed results. When the box completes the boot the basic systems seem to work ok (I can get an IP and poke the filesystem). It still takes several minutes to get to a prompt as mentioned on the wiki page. It happens quite often that the box does not get to a prompt at all. It fails to read the MMC properly. Below is two separate cases where reading the partition table fails. In the first case it finds one partition and in the second case it fails to find any partitions. The boot monitor has no problem reading uboot, kernel or initrd from the MMC when writing to internal FLASH. I've also tried a different SD card with similar results. Sometimes it works fine and other times it reports I/O errors. I've tried the daily builds for 6, 8 and 10 October. Is this a known issue? - mmc0: host does not support reading read-only switch. assuming write-enable. mmc0: new SD card at address 8fe4 mmcblk0: mmc0:8fe4 SD02G 1.84 GiB mmcblk0: Freeing init memory: 160K p1ding, please wait... p2 udev[497]: starting version 163 port 1 high speed Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. usb 1-1: new high speed USB device using isp1760 and address 2 port 1 high speed usb 1-1: New USB device found, idVendor=0471, idProduct=3526 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1: Product: ISP1520 usb 1-1: Manufacturer: Philips Semiconductors mmcblk0: retrying using single block read mmcblk0: error -5 transferring data, sector 0, nr 8, card status 0xb00 hub 1-1:1.0: USB hub found hub 1-1:1.0: 3 ports detected end_request: I/O error, dev mmcblk0, sector 0 Buffer I/O error on device mmcblk0, logical block 0 - mmc0: host does not support reading read-only switch. assuming write-enable. mmc0: new SD card at address 8fe4 mmcblk0: mmc0:8fe4 SD02G 1.84 GiB mmcblk0: TCP cubic registered NET: Registered protocol family 10 lo: Disabled Privacy Extensions NET: Registered protocol family 17 port 1 high speed VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 0 Registering SWP/SWPB emulation handler rtc-pl031 mb:rtc: setting system clock to 2010-10-11 10:49:28 UTC (1286794168) usb 1-1: new high speed USB device using isp1760 and address 2 Freeing init memory: 160K port 1 high speed mmcblk0: retrying using single block read Loading, please wait... usb 1-1: New USB device found, idVendor=0471, idProduct=3526 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 udev[493]: starting version 163 Begin: Loading eusb 1-1: Product: ISP1520 mmcblk0: error -5 transferring data, sector 2, nr 6, card status 0x900 end_request: I/O error, dev mmcblk0, sector 2 ssential driversusb 1-1: Manufacturer: Philips Semiconductors ... done. Begin: Runnimmcblk0: error -5 transferring data, sector 3, nr 5, card status 0x900 ng /scripts/initend_request: I/O error, dev mmcblk0, sector 3 -premount ... done. Begin: Mounting root file system ... hub 1-1:1.0: USB hub found hub 1-1:1.0: 3 ports detected Begin: Running /scripts/local-tommcblk0: error -5 transferring data, sector 5, nr 3, card status 0xb00 p ... done. end_request: I/O error, dev mmcblk0, sector 5 unable to read partition table - Thanks, Harry -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: [PATCH] cpufreq, cpuidle clock for MOP500 hrefp
On 10 Oct 11, Vincent Guittot wrote:
On 11 October 2010 10:58, Amit Kucheria amit.kuche...@linaro.org wrote:
On 10 Oct 11, Vincent Guittot wrote:
Hi,
Please find attached 3 patches for :
- enabling cpuidle feature on MOP500 hrefp
- making cpufreq stat available for powertop
- adding debugfs clock tree for powerdebug
These patches have been tested on the latest
//git.linaro.org/bsp/st-ericsson/linux-2.6.34-ux500
Vincent
Thanks Vincent. So with these patches, the ux500 platform can be used with
cpufreq and cpuidle and works correctly with the powertop and powerdebug
tools
we have?
Yes it is.
Is the same true for the ux500 code in mainline? Does it support cpufreq,
cpuidle?
Not yet. it's on going
Just a brief comment below, regarding the patch.
From 5bd1f1a5ecc7ce6d812215a474869fcf2e10c1e4 Mon Sep 17 00:00:00 2001
From: Vincent Guittot vincent.guit...@stericsson.com
Date: Mon, 11 Oct 2010 09:23:18 +0200
Subject: [PATCH] cpufreq_getspeed can't return negative value
---
arch/arm/mach-ux500/cpufreq.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-ux500/cpufreq.c b/arch/arm/mach-ux500/cpufreq.c
index 4454a08..ea01240 100755
--- a/arch/arm/mach-ux500/cpufreq.c
+++ b/arch/arm/mach-ux500/cpufreq.c
@@ -100,7 +100,9 @@ unsigned int u8500_getspeed(unsigned int cpu)
case ARM_50_OPP: return freq_table[1].frequency;
case ARM_100_OPP: return freq_table[2].frequency;
default:
- return -EINVAL;
+ /* During boot, the returned value is undefined */
+ /* In this case, we set the max frequency */
+ return freq_table[2].frequency;
freq_table[2] will break if another frequency is added to the table. I
recommend defining something like a MAX_NUM_FREQ for the table and using
that
in the driver.
The idea was to return the same value than ARM_100_OPP. I could map
the default use case to the ARM_100_OPP one instead ?
Perhaps I'm being pedantic, but I prefer using names to hard-coded numbers.
So, something like a
enum freq {
ARM_50_OPP
ARM_100_OPP
}
used with
return freq_table[ARM_100_OPP].frequency
will continue to work even if you add ARM_25_OPP and ARM_75_OPP to the enum.
/Amit
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SD/MMC for i.MX51
Can we merge the SD/MMC patches for i.MX MMC support into the linaro kernel? They have been reviewed extensively and look very likely to go into the next merge window. Merging them and enabling SD support for i.MX51 will allow us to make a more functional hwpack for the babbage boards. Please search for SD/MMC driver for MX25/35/51 from Wolfram Sang on lakml for the patchset. Regards, Amit ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
linux-linaro pull request
The following changes since commit d0bbdab2bb2c55c3dc6a4b3fd2128250dff99feb: LINARO: Linaro-2.6.35-1006.12 (2010-09-20 20:01:02 -0600) are available in the git repository at: git://git.linaro.org/ubuntu/linux-linaro.git linaro-2.6.35-1007.13 Al Viro (2): arm: fix really nasty sigreturn bug arm: fix really nasty sigreturn bug Alan Ott (1): HID: Set Report ID properly for Output reports on the Control endpoint. Alex Deucher (6): drm/radeon/kms: fix a regression on r7xx AGP due to the HDP flush fix drm/radeon/kms: force legacy pll algo for RV515 LVDS drm/radeon/kms: force legacy pll algo for RV620 LVDS drm/radeon/kms: properly set crtc high base on r7xx drm/radeon/kms/evergreen: fix gpu hangs in userspace accel code drm/radeon/kms/evergreen: fix backend setup Alexey Kuznetsov (1): tcp: Prevent overzealous packetization by SWS logic. Amit Shah (1): virtio: console: Prevent userspace from submitting NULL buffers Andrea Arcangeli (3): mm: fix swapin race condition mmap: call unlink_anon_vmas() in __split_vma() in case of error KVM: MMU: fix mmu notifier invalidate handler for huge spte Andreas Herrmann (1): hwmon: (k8temp) Differentiate between AM2 and ASB1 Andrew Morton (1): drivers/pci/intel-iommu.c: fix build with older gcc's Andy Gospodarek (1): bonding: correctly process non-linear skbs Andy Whitcroft (1): Revert UBUNTU: SAUCE: Add support for Intellimouse Mode in ALPS touchpad on Dell E2 series Laptops Anton Vorontsov (1): apm_power: Add missing break statement Arnaud Lacombe (1): kconfig: delay symbol direct dependency initialization Arnd Bergmann (1): /proc/vmcore: fix seeking Avi Kivity (3): KVM: Keep slot ID in memory slot structure KVM: Prevent internal slots from being COWed KVM: VMX: Fix host GDT.LIMIT corruption Axel Lin (1): hwmon: (ads7871) Fix ads7871_probe error paths Ben Hutchings (3): PCI: MSI: Remove unsafe and unnecessary hardware access PCI: MSI: Restore read_msi_msg_desc(); add get_cached_msi_msg_desc() Staging: rt2870sta: Add more device IDs from vendor drivers Benjamin Herrenschmidt (1): Revert Input: appletouch - fix integer overflow issue Brian Austin (1): ALSA: hda - Add errata initverb sequence for CS42xx codecs Brian Rogers (1): UBUNTU: SAUCE: ir-core: Fix null dereferences in the protocols sysfs interface Catalin Marinas (1): ARM: VExpress: Set bit 22 in the PL310 (cache controller) AuxCtlr register Chris Wilson (11): agp/intel: Promote warning about failure to setup flush to error. drm/i915/dp: Really try 5 times before giving up. drm/i915: Allocate the PCI resource for the MCHBAR drm/i915: Prevent double dpms on Revert drm/i915: Allow LVDS on pipe A on gen4+ drm: Only decouple the old_fb from the crtc is we call mode_set* drm/i915,agp/intel: Add second set of PCI-IDs for B43 drm/i915: Ensure that the crtcinfo is populated during mode_fixup() drm/i915: Rephrase pwrite bounds checking to avoid any potential overflow drm/i915: Skip pread/pwrite if size to copy is 0. drm/i915: Sanity check pread/pwrite Chris Wright (1): tracing: t_start: reset FTRACE_ITER_HASH in case of seek/pread Christian Lamparter (1): p54: fix tx feedback status flag check Christoph Hellwig (3): direct-io: move aio_complete into -end_io xfs: move aio completion after unwritten extent conversion swap: do not send discards as barriers Christoph Lameter (1): mm: page allocator: calculate a better estimate of NR_FREE_PAGES when memory is low and kswapd is awake Christopher James Halse Rogers (2): UBUNTU: SAUCE: Nouveau: Add quirk framework to disable acceleration UBUNTU: SAUCE: Nouveau: Disable acceleration on MacBook Pros Clemens Ladisch (3): ALSA: usb-audio: fix detection of vendor-specific device protocol settings ALSA: virtuoso: work around missing reset in the Xonar DS Windows driver ALSA: virtuoso: fix setting of Xonar DS line-in/mic-in controls Colin Cross (1): PM: Prevent waiting forever on asynchronous resume after failing suspend Craig Shelley (1): USB: CP210x Add new device ID Dan Carpenter (7): USB: ehci-ppc-of: problems in unwind sysfs: checking for NULL instead of ERR_PTR irda: off by one i915: return -EFAULT if copy_to_user fails i915_gem: return -EFAULT if copy_to_user fails Staging: vt6655: fix buffer overflow net/llc: make opt unsigned in llc_ui_setsockopt() Dan Rosenberg (9): USB: serial/mos*: prevent reading uninitialized stack memory drivers/net/usb/hso.c: prevent reading uninitialized memory drivers/net/cxgb3/cxgb3_main.c: prevent reading uninitialized stack memory drivers/net/eql.c: prevent reading uninitialized stack memory drivers/video/sis/sis_main.c:
linux-meta-linaro pull request
The following changes since commit b99670db3d6a43efe6d55ce92d7a227fb1ff41f7: LINARO: Linaro-2.6.35.1006.11 (2010-09-16 17:17:17 -0600) are available in the git repository at: git://git.linaro.org/ubuntu/linux-meta-linaro.git master John Rigby (1): LINARO: Linaro-2.6.35.1007.12 meta-source/debian/changelog |6 ++ 1 files changed, 6 insertions(+), 0 deletions(-) ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: Cortex A9 vexpress MMC I/O problems.
On Mon, Oct 11, 2010 at 01:13:40PM +0100, Harry Liebel wrote: I've had mixed results. When the box completes the boot the basic systems seem to work ok (I can get an IP and poke the filesystem). It still takes several minutes to get to a prompt as mentioned on the wiki page. It happens quite often that the box does not get to a prompt at all. It fails to read the MMC properly. Below is two separate cases where reading the partition table fails. In the first case it finds one partition and in the second case it fails to find any partitions. The boot monitor has no problem reading uboot, kernel or initrd from the MMC when writing to internal FLASH. I've also tried a different SD card with similar results. Sometimes it works fine and other times it reports I/O errors. I've tried the daily builds for 6, 8 and 10 October. Is this a known issue? I can't fix your problem but for extra brownie points you could register this in launchpad as a bug and we can push for the right people to investigate. Please file a bug at: http://bugs.launchpad.net/linux-linaro (sounds like a kernel related issue) and we will take it from there :) Regards, Jamie. - mmc0: host does not support reading read-only switch. assuming write-enable. mmc0: new SD card at address 8fe4 mmcblk0: mmc0:8fe4 SD02G 1.84 GiB mmcblk0: Freeing init memory: 160K p1ding, please wait... p2 udev[497]: starting version 163 port 1 high speed Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. usb 1-1: new high speed USB device using isp1760 and address 2 port 1 high speed usb 1-1: New USB device found, idVendor=0471, idProduct=3526 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1: Product: ISP1520 usb 1-1: Manufacturer: Philips Semiconductors mmcblk0: retrying using single block read mmcblk0: error -5 transferring data, sector 0, nr 8, card status 0xb00 hub 1-1:1.0: USB hub found hub 1-1:1.0: 3 ports detected end_request: I/O error, dev mmcblk0, sector 0 Buffer I/O error on device mmcblk0, logical block 0 - mmc0: host does not support reading read-only switch. assuming write-enable. mmc0: new SD card at address 8fe4 mmcblk0: mmc0:8fe4 SD02G 1.84 GiB mmcblk0: TCP cubic registered NET: Registered protocol family 10 lo: Disabled Privacy Extensions NET: Registered protocol family 17 port 1 high speed VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 0 Registering SWP/SWPB emulation handler rtc-pl031 mb:rtc: setting system clock to 2010-10-11 10:49:28 UTC (1286794168) usb 1-1: new high speed USB device using isp1760 and address 2 Freeing init memory: 160K port 1 high speed mmcblk0: retrying using single block read Loading, please wait... usb 1-1: New USB device found, idVendor=0471, idProduct=3526 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 udev[493]: starting version 163 Begin: Loading eusb 1-1: Product: ISP1520 mmcblk0: error -5 transferring data, sector 2, nr 6, card status 0x900 end_request: I/O error, dev mmcblk0, sector 2 ssential driversusb 1-1: Manufacturer: Philips Semiconductors ... done. Begin: Runnimmcblk0: error -5 transferring data, sector 3, nr 5, card status 0x900 ng /scripts/initend_request: I/O error, dev mmcblk0, sector 3 -premount ... done. Begin: Mounting root file system ... hub 1-1:1.0: USB hub found hub 1-1:1.0: 3 ports detected Begin: Running /scripts/local-tommcblk0: error -5 transferring data, sector 5, nr 3, card status 0xb00 p ... done. end_request: I/O error, dev mmcblk0, sector 5 unable to read partition table - Thanks, Harry -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: Cortex A9 vexpress MMC I/O problems.
Hi Jamie, On 10/11/2010 03:03 PM, Jamie Bennett wrote: On Mon, Oct 11, 2010 at 01:13:40PM +0100, Harry Liebel wrote: I've had mixed results. When the box completes the boot the basic systems seem to work ok (I can get an IP and poke the filesystem). It still takes several minutes to get to a prompt as mentioned on the wiki page. It happens quite often that the box does not get to a prompt at all. It fails to read the MMC properly. Below is two separate cases where reading the partition table fails. In the first case it finds one partition and in the second case it fails to find any partitions. The boot monitor has no problem reading uboot, kernel or initrd from the MMC when writing to internal FLASH. I've also tried a different SD card with similar results. Sometimes it works fine and other times it reports I/O errors. I've tried the daily builds for 6, 8 and 10 October. Is this a known issue? I can't fix your problem but for extra brownie points you could register this in launchpad as a bug and we can push for the right people to investigate. Please file a bug at: http://bugs.launchpad.net/linux-linaro (sounds like a kernel related issue) and we will take it from there :) We've already opened a bug on this issue: https://bugs.launchpad.net/ubuntu/+source/linux-linaro/+bug/632798 --Matt Regards, Jamie. - mmc0: host does not support reading read-only switch. assuming write-enable. mmc0: new SD card at address 8fe4 mmcblk0: mmc0:8fe4 SD02G 1.84 GiB mmcblk0: Freeing init memory: 160K p1ding, please wait... p2 udev[497]: starting version 163 port 1 high speed Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. usb 1-1: new high speed USB device using isp1760 and address 2 port 1 high speed usb 1-1: New USB device found, idVendor=0471, idProduct=3526 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1: Product: ISP1520 usb 1-1: Manufacturer: Philips Semiconductors mmcblk0: retrying using single block read mmcblk0: error -5 transferring data, sector 0, nr 8, card status 0xb00 hub 1-1:1.0: USB hub found hub 1-1:1.0: 3 ports detected end_request: I/O error, dev mmcblk0, sector 0 Buffer I/O error on device mmcblk0, logical block 0 - mmc0: host does not support reading read-only switch. assuming write-enable. mmc0: new SD card at address 8fe4 mmcblk0: mmc0:8fe4 SD02G 1.84 GiB mmcblk0: TCP cubic registered NET: Registered protocol family 10 lo: Disabled Privacy Extensions NET: Registered protocol family 17 port 1 high speed VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 0 Registering SWP/SWPB emulation handler rtc-pl031 mb:rtc: setting system clock to 2010-10-11 10:49:28 UTC (1286794168) usb 1-1: new high speed USB device using isp1760 and address 2 Freeing init memory: 160K port 1 high speed mmcblk0: retrying using single block read Loading, please wait... usb 1-1: New USB device found, idVendor=0471, idProduct=3526 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 udev[493]: starting version 163 Begin: Loading eusb 1-1: Product: ISP1520 mmcblk0: error -5 transferring data, sector 2, nr 6, card status 0x900 end_request: I/O error, dev mmcblk0, sector 2 ssential driversusb 1-1: Manufacturer: Philips Semiconductors ... done. Begin: Runnimmcblk0: error -5 transferring data, sector 3, nr 5, card status 0x900 ng /scripts/initend_request: I/O error, dev mmcblk0, sector 3 -premount ... done. Begin: Mounting root file system ... hub 1-1:1.0: USB hub found hub 1-1:1.0: 3 ports detected Begin: Running /scripts/local-tommcblk0: error -5 transferring data, sector 5, nr 3, card status 0xb00 p ... done. end_request: I/O error, dev mmcblk0, sector 5 unable to read partition table - Thanks, Harry -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: SD/MMC for i.MX51
Looks like discussion is still happening on the mmc mailing list wrt those patches. How pressing is it to have them merged? I'd like to pick up the final patch versions if possible. Also I'd much prefer if someone could test those patches when applied to the linaro stable tree before actually merging them officially. Did someone test them already? On Mon, 11 Oct 2010, John Rigby wrote: This sounds ok to me. Nico, let me know when this is in your stable tree. Thanks, John On Mon, Oct 11, 2010 at 8:37 AM, Amit Kucheria amit.kuche...@linaro.org wrote: Can we merge the SD/MMC patches for i.MX MMC support into the linaro kernel? They have been reviewed extensively and look very likely to go into the next merge window. Merging them and enabling SD support for i.MX51 will allow us to make a more functional hwpack for the babbage boards. Please search for SD/MMC driver for MX25/35/51 from Wolfram Sang on lakml for the patchset. Regards, Amit ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
Re: SD/MMC for i.MX51
I applied the patches on linux-linaro-2.6.35, and can mount the rootfs on mmc. On Tue, Oct 12, 2010 at 11:48 AM, Nicolas Pitre nicolas.pi...@linaro.org wrote: Looks like discussion is still happening on the mmc mailing list wrt those patches. How pressing is it to have them merged? I'd like to pick up the final patch versions if possible. Also I'd much prefer if someone could test those patches when applied to the linaro stable tree before actually merging them officially. Did someone test them already? On Mon, 11 Oct 2010, John Rigby wrote: This sounds ok to me. Nico, let me know when this is in your stable tree. Thanks, John On Mon, Oct 11, 2010 at 8:37 AM, Amit Kucheria amit.kuche...@linaro.org wrote: Can we merge the SD/MMC patches for i.MX MMC support into the linaro kernel? They have been reviewed extensively and look very likely to go into the next merge window. Merging them and enabling SD support for i.MX51 will allow us to make a more functional hwpack for the babbage boards. Please search for SD/MMC driver for MX25/35/51 from Wolfram Sang on lakml for the patchset. Regards, Amit ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev -- Regards, Shawn ___ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
