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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2008-09-30 20:08:36 +0200
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2008-10-08 18:59:04 +0200
commit77a0355f60b801f232ce0a5bfbe95331fa3b6bc0 (patch)
tree9285b86f451c0b9c878ccbd916baf49a5823da1c /doc
parent1ed7a7f0f571b13d46530f8f8b9aff3957f15a96 (diff)
move README.imx31 to doc/ and merge with README.mx31
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'doc')
-rw-r--r--doc/README.imx3129
-rw-r--r--doc/README.mx3117
2 files changed, 29 insertions, 17 deletions
diff --git a/doc/README.imx31 b/doc/README.imx31
new file mode 100644
index 00000000000..91ef766884d
--- /dev/null
+++ b/doc/README.imx31
@@ -0,0 +1,29 @@
+U-Boot for Freescale i.MX31
+
+This file contains information for the port of U-Boot to the Freescale
+i.MX31 SoC.
+
+1. CONFIGURATION OPTIONS/SETTINGS
+---------------------------------
+
+1.1 Configuration of MC13783 SPI bus
+------------------------------------
+ The power management companion chip MC13783 is connected to the
+ i.MX31 via an SPI bus. Use the following configuration options
+ to setup the bus and chip select used for a particular board.
+
+ CONFIG_MC13783_SPI_BUS -- defines the SPI bus the MC13783 is connected to.
+ Note that 0 is CSPI1, 1 is CSPI2 and 2 is CSPI3.
+ CONFIG_MC13783_SPI_CS -- define the chip select the MC13783 s connected to.
+
+1.2 Timer precision
+-------------------
+ CONFIG_MX31_TIMER_HIGH_PRECISION
+
+ Enable higher precision timer. The low-precision timer
+ (default) provides approximately 4% error, whereas the
+ high-precision timer is about 0.4% accurate. The extra
+ accuracy is achieved at the cost of higher computational
+ overhead, which, in places where time is measured, should
+ not be critical, so, it should be safe to enable this
+ option.
diff --git a/doc/README.mx31 b/doc/README.mx31
deleted file mode 100644
index 291c2f31b9e..00000000000
--- a/doc/README.mx31
+++ /dev/null
@@ -1,17 +0,0 @@
-U-Boot for Freescale i.MX31
-
-This file contains information for the port of U-Boot to the Freescale
-i.MX31 SoC.
-
-1. CONFIGURATION OPTIONS/SETTINGS
----------------------------------
-
-1.1 Configuration of MC13783 SPI bus
-------------------------------------
-The power management companion chip MC13783 is connected to the
-i.MX31 via an SPI bus. Use the following configuration options
-to setup the bus and chip select used for a particular board.
-
-CONFIG_MC13783_SPI_BUS -- defines the SPI bus the MC13783 is connected to.
- Note that 0 is CSPI1, 1 is CSPI2 and 2 is CSPI3.
-CONFIG_MC13783_SPI_CS -- define the chip select the MC13783 s connected to.