memory: emif: add basic infrastructure for EMIF driver

EMIF is an SDRAM controller used in various Texas Instruments
SoCs. EMIF supports, based on its revision, one or more of
LPDDR2/DDR2/DDR3 protocols.

Add the basic infrastructure for EMIF driver that includes
driver registration, probe, parsing of platform data etc.

Signed-off-by: Aneesh V <aneesh@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Benoit Cousson <b-cousson@ti.com>
[santosh.shilimkar@ti.com: Moved to drivers/memory from drivers/misc]
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
new file mode 100644
index 000000000000..b08327cca0e5
--- /dev/null
+++ b/drivers/memory/Kconfig
@@ -0,0 +1,22 @@
+#
+# Memory devices
+#
+
+menuconfig MEMORY
+        bool "Memory Controller drivers"
+
+if MEMORY
+
+config TI_EMIF
+        tristate "Texas Instruments EMIF driver"
+        select DDR
+        help
+          This driver is for the EMIF module available in Texas Instruments
+          SoCs. EMIF is an SDRAM controller that, based on its revision,
+          supports one or more of DDR2, DDR3, and LPDDR2 SDRAM protocols.
+          This driver takes care of only LPDDR2 memories presently. The
+          functions of the driver includes re-configuring AC timing
+          parameters and other settings during frequency, voltage and
+          temperature changes
+
+endif