Commit Graph

7 Commits

Author SHA1 Message Date
Tang Yuantian dfcdc5fe03 ahci: qoriq: Adjust the default register values on ls1021a
Updated the registers' values to enhance SATA performance and
reliability on ls1021a soc.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-16 10:24:35 -05:00
Tang Yuantian e3a6dadc6d ahci: qoriq: Update the default Rx watermark value
The PTC[RXWM] sets the watermark value for Rx FIFO. The default
value 0x20 might be insufficient for some hard drives. If the
watermark value is too small, a single-cycle overflow may occur
and is reported as a CRC or internal error in the PxSERR register.
Updated the value to 0x29 according to the validation test.
All LS platforms are affected.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-16 10:24:35 -05:00
Tang Yuantian ef0cc7fef4 ahci: qoriq: Adjust the default register values on ls1043a
Updated the registers' values to enhance SATA performance and
reliability.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-16 10:24:35 -05:00
Tang Yuantian 640847298e ahci: qoriq: Disable NCQ on ls2080a SoC
NCQ feature can't be used due to the erratum A-008473.
This patch disables NCQ as a workaround.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-31 09:52:15 +09:00
Tang Yuantian d19f9aaf01 ahci: qoriq: Rename LS2085A SoC support code to LS2080A
Freescale is renaming the LS2085A SoC to LS2080A.
This patch addresses the same.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-31 09:52:15 +09:00
Arnd Bergmann eb351031a1 ahci: qoriq: Fix a compiling warning
kbuild test robot reports the warnings:
drivers/ata/ahci_qoriq.c: In function 'ahci_qoriq_hardreset':
>> include/asm-generic/io.h:163:2: warning: 'px_is' may be used
>> uninitialized in this function [-Wuninitialized]
drivers/ata/ahci_qoriq.c:70:14: note: 'px_is' was declared here
>> include/asm-generic/io.h:163:2: warning: 'px_cmd' may be used
>> uninitialized in this function [-Wuninitialized]
drivers/ata/ahci_qoriq.c:70:6: note: 'px_cmd' was declared here

This patch fixed it by introducing a local variable.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-15 12:03:00 -04:00
Tang Yuantian ecfb459851 ahci: added a new driver for supporting Freescale AHCI sata
Currently Freescale QorIQ series SATA is supported by ahci_platform
driver. Some SoC specific settings have been put in uboot. So whether
SATA works or not heavily depends on uboot.
This patch will add a new driver to support QorIQ sata which removes
the dependency on any other boot loader.
Freescale QorIQ series sata, like ls1021a ls2085a ls1043a, is
compatible with serial ATA 3.0 and AHCI 1.3 specification.

Signed-off-by: Yuantian Tang <Yuantian.Tang@freescale.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-09-08 12:30:06 -04:00