AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/memory
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Thomas Petazzoni ce965c3d2e memory: mvebu-devbus: fix the conversion of the bus width 
According to the Armada 370 and Armada XP datasheets, the part of the
Device Bus register that configure the bus width should contain 0 for
a 8 bits bus width, and 1 for a 16 bits bus width (other values are
unsupported/reserved).

However, the current conversion done in the driver to convert from a
bus width in bits to the value expected by the register leads to
setting the register to 1 for a 8 bits bus, and 2 for a 16 bits bus.

This mistake was compensated by a mistake in the existing Device Tree
files for Armada 370/XP platforms: they were declaring a 8 bits bus
width, while the hardware in fact uses a 16 bits bus width.

This commit fixes that by adjusting the conversion logic.

This patch fixes a bug that was introduced in
3edad321b1 ('drivers: memory: Introduce
Marvell EBU Device Bus driver'), which was merged in v3.11.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397489361-5833-2-git-send-email-thomas.petazzoni@free-electrons.com
Fixes: 3edad321b1 ('drivers: memory: Introduce Marvell EBU Device Bus driver')
Cc: stable@vger.kernel.org # v3.11+
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-04-17 04:14:30 +00:00
..
emif.c drivers/memory: don't check resource with devm_ioremap_resource 2013-05-18 11:55:52 +02:00
emif.h memory: emif: handle frequency and voltage change events 2012-05-02 10:52:09 -07:00
fsl_ifc.c driver/memory:Move Freescale IFC driver to a common driver 2014-02-18 12:20:45 -08:00
Kconfig memory: ti-aemif: introduce AEMIF driver 2014-02-28 16:47:21 -08:00
Makefile memory: ti-aemif: introduce AEMIF driver 2014-02-28 16:47:21 -08:00
mvebu-devbus.c memory: mvebu-devbus: fix the conversion of the bus width 2014-04-17 04:14:30 +00:00
of_memory.c memory: emif: add device tree support to emif driver 2012-09-04 16:14:31 -07:00
of_memory.h memory: fix build when CONFIG_OF && !CONFIG_DDR 2012-09-05 11:57:19 -07:00
tegra20-mc.c tegra: simplify use of devm_ioremap_resource 2013-08-15 16:04:42 -06:00
tegra30-mc.c tegra: simplify use of devm_ioremap_resource 2013-08-15 16:04:42 -06:00
ti-aemif.c memory: ti-aemif: introduce AEMIF driver 2014-02-28 16:47:21 -08:00