resentding in plain text
On Wed, Mar 27, 2019 at 9:56 PM jean-luc malet <jeanluc.ma...@gmail.com> wrote:
>
> Hi everybody
> thanks to chuanjin pang, it's almost a year that I use my controler with
> sdcards >128G without issue, I upgraded my kernel to 5.0.4 and noticed that
> the sdcard bug was still present... so I applied the patch again and it did
> fixed the issue as it did on my previous kernel build
> since the stability seems very good, please consider applying this patch for
> futur kernel release
> thanks and regards
> JLM
>
> On Mon, Jun 11, 2018 at 2:04 PM jean-luc malet <jeanluc.ma...@gmail.com>
> wrote:
>>
>> something has changed.... the sdcard wasn't working at all on 4.16.11 kernel
>> (crash on reading but sdcard discovery was working) for any card and not
>> at all on 4.9.? kernel (not even listing the sdcard when inserting) , in
>> 4.17 it works with all card below 256G that I have... so there is obvioulsy
>> a change somewhere that made this controler works....
>> best regards
>>
>> On Mon, Jun 11, 2018 at 1:11 PM Adrian Hunter <adrian.hun...@intel.com>
>> wrote:
>>>
>>> On 09/06/18 11:38, jean-luc malet wrote:
>>> > Hi everybody!
>>> > thanks for adding support to my O2 Micro, Inc. Device 8620 in last
>>> > kernel!!!
>>> > I was looking for it since long time!!!!
>>> >
>>> > # lspci -kv
>>> > 02:00.0 SD Host controller: O2 Micro, Inc. Device 8620 (rev 01) (prog-if
>>> > 01)
>>> > Subsystem: Lenovo Device 3800
>>> > Flags: bus master, fast devsel, latency 0, IRQ 17
>>> > Memory at a1001000 (32-bit, non-prefetchable) [size=4K]
>>> > Memory at a1000000 (32-bit, non-prefetchable) [size=2K]
>>> > Capabilities: [6c] Power Management version 3
>>> > Capabilities: [48] MSI: Enable- Count=1/1 Maskable+ 64bit+
>>> > Capabilities: [80] Express Endpoint, MSI 00
>>> > Capabilities: [100] Virtual Channel
>>> > Capabilities: [200] Advanced Error Reporting
>>> > Capabilities: [230] Latency Tolerance Reporting
>>> > Capabilities: [240] L1 PM Substates
>>> > Kernel driver in use: sdhci-pci
>>> > Kernel modules: sdhci_pci
>>> >
>>> > it works fine with sdcard up to 128G but crash on my samsung 256G evo plus
>>> > card
>>> > (https://www.samsung.com/fr/memory-storage/evo-plus-microsd-card-with-sd-adapter/MB-MC256DAEU/)
>>> >
>>> > insert 256G card
>>> > #dmesg
>>> >
>>> > [94815.892525] mmc0: Tuning timeout, falling back to fixed sampling
>>> > clock
>>> > [94815.892627] mmc0: new ultra high speed SDR104 SDXC card at address
>>> > 0001
>>> > [94815.893398] mmcblk0: mmc0:0001 EE8QT 239 GiB
>>> > [94815.945330] mmc0: Tuning timeout, falling back to fixed sampling
>>> > clock
>>> >
>>> > # dd if=/dev/mmcblk0 of=test bs=512 count=1
>>> >
>>> > dd: error reading '/dev/mmcblk0': Input/output error
>>> > 0+0 records in
>>> > 0+0 records out
>>> > 0 bytes copied, 42.829 s, 0.0 kB/s
>>> >
>>> > #dmesg
>>> >
>>> > [94825.956285] mmc0: Timeout waiting for hardware interrupt.
>>> > [94825.956289] mmc0: sdhci: ============ SDHCI REGISTER DUMP
>>> > ===========
>>> > [94825.956297] mmc0: sdhci: Sys addr: 0x00000008 | Version:
>>> > 0x00000603
>>> > [94825.956304] mmc0: sdhci: Blk size: 0x00007200 | Blk cnt:
>>> > 0x00000008
>>> > [94825.956310] mmc0: sdhci: Argument: 0x00000000 | Trn mode:
>>> > 0x0000003b
>>> > [94825.956316] mmc0: sdhci: Present: 0x01ff0000 | Host ctl:
>>> > 0x00000017
>>> > [94825.956322] mmc0: sdhci: Power: 0x0000000f | Blk gap:
>>> > 0x00000000
>>> > [94825.956327] mmc0: sdhci: Wake-up: 0x00000000 | Clock:
>>> > 0x00000007
>>> > [94825.956333] mmc0: sdhci: Timeout: 0x0000000a | Int stat:
>>> > 0x00000000
>>> > [94825.956339] mmc0: sdhci: Int enab: 0x02ff008b | Sig enab:
>>> > 0x02ff008b
>>> > [94825.956344] mmc0: sdhci: AC12 err: 0x00000004 | Slot int:
>>> > 0x00000000
>>> > [94825.956350] mmc0: sdhci: Caps: 0x25fcc8bf | Caps_1:
>>> > 0x00002077
>>> > [94825.956356] mmc0: sdhci: Cmd: 0x0000123a | Max curr:
>>> > 0x005800c8
>>> > [94825.956362] mmc0: sdhci: Resp[0]: 0x00000900 | Resp[1]:
>>> > 0x00000000
>>> > [94825.956368] mmc0: sdhci: Resp[2]: 0x00000000 | Resp[3]:
>>> > 0x00001b00
>>> > [94825.956371] mmc0: sdhci: Host ctl2: 0x0000800b
>>> > [94825.956378] mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr:
>>> > 0xfffff208
>>> > [94825.956380] mmc0: sdhci:
>>> > ============================================
>>> > [94826.007314] mmc0: Tuning timeout, falling back to fixed sampling
>>> > clock
>>> >
>>> > remove card
>>> > insert 128G card (http://www.toshiba-sdcard.com/microsd/microsd_m302.html)
>>> > #dmesg
>>> >
>>> > [95214.753428] mmc0: Tuning timeout, falling back to fixed sampling
>>> > clock
>>> > [95214.753530] mmc0: new ultra high speed SDR104 SDXC card at address
>>> > 1234
>>> > [95214.754399] mmcblk0: mmc0:1234 SA128 116 GiB
>>> > [95214.756474] mmcblk0: p1
>>> >
>>> >
>>> > # dd if=/dev/mmcblk0 of=test bs=512 count=1
>>> > 1+0 records in
>>> > 1+0 records out
>>> > 512 bytes copied, 0.00209609 s, 244 kB/s
>>> >
>>> >
>>> > remove card
>>> > insert 128G card (samsung 128Gb evo U1 card)
>>> > #dmseg
>>> >
>>> > [95438.053427] mmc0: Tuning timeout, falling back to fixed sampling
>>> > clock
>>> > [95438.053552] mmc0: new ultra high speed DDR50 SDXC card at address
>>> > 59b4
>>> > [95438.054139] mmcblk0: mmc0:59b4 00000 120 GiB
>>> > [95438.056451] mmcblk0: p1
>>> >
>>> >
>>> > # dd if=/dev/mmcblk0 of=test bs=512 count=1
>>> >
>>> > 1+0 records in
>>> > 1+0 records out
>>> > 512 bytes copied, 0.0346192 s, 14.8 kB/s
>>> >
>>> >
>>> > since the toshiba a 256G samsung are both U3 this seems not related to
>>> > this
>>> > since one of the samsung card works, this don't seems to be related to the
>>> > brand....
>>> > so this seems related to the size of the card....
>>> > if you need more information, I'll try to provide the best accurate ones
>>> > :)
>>>
>>> Tuning fails for all the cards, it is just some of them still work with
>>> fixed sampling. You need to find someone who knows about the O2 Micro
>>> controllers. but no one has touched the driver since 2015.
From 63c3e27be619db1b13241cc3aff46ffdcc811ee0 Mon Sep 17 00:00:00 2001
From: "chuanjin.pang" <chuanjin.p...@bayhubtech.com>
Date: Sat, 15 Sep 2018 00:27:27 +0800
Subject: [PATCH] clean bayhub quirks2 flag for tuning UHS timeout issue
---
mmc/host/sdhci-pci-core.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/mmc/host/sdhci-pci-core.c b/mmc/host/sdhci-pci-core.c
index 77dd352..6573f44 100644
--- a/mmc/host/sdhci-pci-core.c
+++ b/mmc/host/sdhci-pci-core.c
@@ -1176,7 +1176,6 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
static const struct sdhci_pci_fixes sdhci_o2 = {
.probe = sdhci_pci_o2_probe,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
- .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
.probe_slot = sdhci_pci_o2_probe_slot,
#ifdef CONFIG_PM_SLEEP
.resume = sdhci_pci_o2_resume,
--
2.7.4
