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BOUGH CHEN e30be063d6 mmc: sdhci-esdhc-imx: correct the fix of ERR004536 Commit `18094430d6` ("mmc: sdhci-esdhc-imx: add ADMA Length Mismatch errata fix") involve the fix of ERR004536, but the fix is incorrect. Double confirm with IC, need to clear the bit 7 of register 0x6c rather than set this bit 7. Here is the definition of bit 7 of 0x6c: 0: enable the new IC fix for ERR004536 1: do not use the IC fix, keep the same as before Find this issue on i.MX845s-evk board when enable CMDQ, and let system in heavy loading. root@imx8mmevk:~# dd if=/dev/mmcblk2 of=/dev/null bs=1M & root@imx8mmevk:~# memtester 1000M > /dev/zero & root@imx8mmevk:~# [ 139.897220] mmc2: cqhci: timeout for tag 16 [ 139.901417] mmc2: cqhci: ============ CQHCI REGISTER DUMP =========== [ 139.907862] mmc2: cqhci: Caps: 0x0000310a \| Version: 0x00000510 [ 139.914311] mmc2: cqhci: Config: 0x00001001 \| Control: 0x00000000 [ 139.920753] mmc2: cqhci: Int stat: 0x00000000 \| Int enab: 0x00000006 [ 139.927193] mmc2: cqhci: Int sig: 0x00000006 \| Int Coal: 0x00000000 [ 139.933634] mmc2: cqhci: TDL base: 0x7809c000 \| TDL up32: 0x00000000 [ 139.940073] mmc2: cqhci: Doorbell: 0x00030000 \| TCN: 0x00000000 [ 139.946518] mmc2: cqhci: Dev queue: 0x00010000 \| Dev Pend: 0x00010000 [ 139.952967] mmc2: cqhci: Task clr: 0x00000000 \| SSC1: 0x00011000 [ 139.959411] mmc2: cqhci: SSC2: 0x00000001 \| DCMD rsp: 0x00000000 [ 139.965857] mmc2: cqhci: RED mask: 0xfdf9a080 \| TERRI: 0x00000000 [ 139.972308] mmc2: cqhci: Resp idx: 0x0000002e \| Resp arg: 0x00000900 [ 139.978761] mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== [ 139.985214] mmc2: sdhci: Sys addr: 0xb2c19000 \| Version: 0x00000002 [ 139.991669] mmc2: sdhci: Blk size: 0x00000200 \| Blk cnt: 0x00000400 [ 139.998127] mmc2: sdhci: Argument: 0x40110400 \| Trn mode: 0x00000033 [ 140.004618] mmc2: sdhci: Present: 0x01088a8f \| Host ctl: 0x00000030 [ 140.011113] mmc2: sdhci: Power: 0x00000002 \| Blk gap: 0x00000080 [ 140.017583] mmc2: sdhci: Wake-up: 0x00000008 \| Clock: 0x0000000f [ 140.024039] mmc2: sdhci: Timeout: 0x0000008f \| Int stat: 0x00000000 [ 140.030497] mmc2: sdhci: Int enab: 0x107f4000 \| Sig enab: 0x107f4000 [ 140.036972] mmc2: sdhci: AC12 err: 0x00000000 \| Slot int: 0x00000502 [ 140.043426] mmc2: sdhci: Caps: 0x07eb0000 \| Caps_1: 0x8000b407 [ 140.049867] mmc2: sdhci: Cmd: 0x00002c1a \| Max curr: 0x00ffffff [ 140.056314] mmc2: sdhci: Resp[0]: 0x00000900 \| Resp[1]: 0xffffffff [ 140.062755] mmc2: sdhci: Resp[2]: 0x328f5903 \| Resp[3]: 0x00d00f00 [ 140.069195] mmc2: sdhci: Host ctl2: 0x00000008 [ 140.073640] mmc2: sdhci: ADMA Err: 0x00000007 \| ADMA Ptr: 0x7809c108 [ 140.080079] mmc2: sdhci: ============================================ [ 140.086662] mmc2: running CQE recovery Fixes: `18094430d6` ("mmc: sdhci-esdhc-imx: add ADMA Length Mismatch errata fix") Signed-off-by: Haibo Chen <haibo.chen@nxp.com> Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>		2019-02-28 12:18:31 +01:00
arch	Bug fixes.	2019-02-24 09:47:07 -08:00
block	for-linus-20190215	2019-02-15 09:12:28 -08:00
certs	kbuild: remove redundant target cleaning on failure	2019-01-06 09:46:51 +09:00
crypto	net: crypto set sk to NULL when af_alg_release.	2019-02-18 12:01:24 -08:00
Documentation	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-02-24 09:28:26 -08:00
drivers	mmc: sdhci-esdhc-imx: correct the fix of ERR004536	2019-02-28 12:18:31 +01:00
firmware	kbuild: change filechk to surround the given command with { }	2019-01-06 09:46:51 +09:00
fs	Two bug fixes for old issues, both marked for stable.	2019-02-21 09:43:37 -08:00
include	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-02-24 09:28:26 -08:00
init	revert "initramfs: cleanup incomplete rootfs"	2019-02-21 09:00:59 -08:00
ipc	ipc: IPCMNI limit check for semmni	2018-10-31 08:54:14 -07:00
kernel	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-02-24 09:28:26 -08:00
lib	Merge branch 'fixes-v5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-02-20 09:09:33 -08:00
LICENSES	This is a fairly typical cycle for documentation. There's some welcome	2018-10-24 18:01:11 +01:00
mm	mm, memory_hotplug: fix off-by-one in is_pageblock_removable	2019-02-21 09:01:01 -08:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-02-24 09:28:26 -08:00
samples	samples: mei: use /dev/mei0 instead of /dev/mei	2019-01-30 15:24:45 +01:00
scripts	kallsyms: Handle too long symbols in kallsyms.c	2019-01-28 13:02:09 +09:00
security	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-02-24 09:28:26 -08:00
sound	sound fixes for 5.0	2019-02-20 09:42:52 -08:00
tools	selftests: fib_tests: sleep after changing carrier. again.	2019-02-23 18:34:20 -08:00
usr	user/Makefile: Fix typo and capitalization in comment section	2018-12-11 00:18:03 +09:00
virt	KVM/ARM fixes for 5.0:	2019-02-13 19:39:24 +01:00
.clang-format	clang-format: Update .clang-format with the latest for_each macro list	2019-01-19 19:26:06 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes	.gitattributes: set git diff driver for C source code files	2016-10-07 18:46:30 -07:00
.gitignore	kbuild: Add support for DT binding schema checks	2018-12-13 09:41:32 -06:00
.mailmap	A few early MIPS fixes for 4.21:	2019-01-05 12:48:25 -08:00
COPYING	COPYING: use the new text with points to the license files	2018-03-23 12:41:45 -06:00
CREDITS	CREDITS/MAINTAINERS: Retire parisc-linux.org email domain	2019-02-21 20:16:10 +01:00
Kbuild	kbuild: use assignment instead of define ... endef for filechk_* rules	2019-01-06 10:22:35 +09:00
Kconfig	kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt	2018-08-02 08:06:55 +09:00
MAINTAINERS	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2019-02-24 09:28:26 -08:00
Makefile	Linux 5.0-rc8	2019-02-24 16:46:45 -08:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.