w1: add 1-wire master driver for i.MX27 / i.MX31

This patch adds support for the 1-wire master interface for i.MX27 and
i.MX31.

Signed-off-by: Luotao Fu <l.fu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 13 insertions, 0 deletions

diff --git a/Documentation/w1/masters/00-INDEX b/Documentation/w1/masters/00-INDEX
index 7b0ceaaad7af..d63fa024ac05 100644
--- a/Documentation/w1/masters/00-INDEX
+++ b/Documentation/w1/masters/00-INDEX
@@ -4,5 +4,7 @@ ds2482
         - The Maxim/Dallas Semiconductor DS2482 provides 1-wire busses.
 ds2490
         - The Maxim/Dallas Semiconductor DS2490 builds USB <-> W1 bridges.
+mxc_w1
+        - W1 master controller driver found on Freescale MX2/MX3 SoCs
 w1-gpio
         - GPIO 1-wire bus master driver.
diff --git a/Documentation/w1/masters/mxc-w1 b/Documentation/w1/masters/mxc-w1
new file mode 100644
index 000000000000..97f6199a7f39
--- /dev/null
+++ b/Documentation/w1/masters/mxc-w1
@@ -0,0 +1,11 @@
+Kernel driver mxc_w1
+====================
+
+Supported chips:
+  * Freescale MX27, MX31 and probably other i.MX SoCs
+    Datasheets:
+        http://www.freescale.com/files/32bit/doc/data_sheet/MCIMX31.pdf?fpsp=1
+        http://www.freescale.com/files/dsp/MCIMX27.pdf?fpsp=1
+
+Author: Originally based on Freescale code, prepared for mainline by
+        Sascha Hauer <s.hauer@pengutronix.de>