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authorTom Rini <trini@ti.com>2013-08-20 08:53:50 -0400
committerTom Rini <trini@ti.com>2013-08-28 11:44:59 -0400
commitd7ccfc5bd66c6f873d292592bea7a8342b12016e (patch)
treeeeaa700053819ff18eb12c66180e191a5e0c7feb /board/ti/am335x/README
parent1dd44e5a4a7ed4b723f2907eb832e65047107255 (diff)
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am335x_evm: Update README for customization
As this is a reference platform, update the README to note which IP blocks are required for use due to design choices of the reference rather than required by the SoC itself. Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'board/ti/am335x/README')
-rw-r--r--board/ti/am335x/README28
1 files changed, 27 insertions, 1 deletions
diff --git a/board/ti/am335x/README b/board/ti/am335x/README
index 67b5246..2a30ab8 100644
--- a/board/ti/am335x/README
+++ b/board/ti/am335x/README
@@ -13,7 +13,33 @@ documented in TI's reference designs:
- AM335x EVM SK
- Beaglebone White
- Beaglebone Black
-'
+
+Customization
+=============
+
+Given that all of the above boards are reference platforms (and the
+Beaglebone platforms are OSHA), it is likely that this platform code and
+configuration will be used as the basis of a custom platform. It is
+worth noting that aside from things such as NAND or MMC only being
+required if a custom platform makes use of these blocks, the following
+are required, depending on design:
+
+- GPIO is only required if DDR3 power is controlled in a way similar to
+ EVM SK
+- SPI is only required for SPI flash, or exposing the SPI bus.
+
+The following blocks are required:
+- I2C, to talk with the PMIC and ensure that we do not run afoul of
+ errata 1.0.24.
+
+When removing options as part of customization,
+CONFIG_EXTRA_ENV_SETTINGS will need additional care to update for your
+needs and to remove no longer relevant options as in some cases we
+define additional text blocks (such as for NAND or DFU strings). Also
+note that all of the SPL options are grouped together, rather than with
+the IP blocks, so both areas will need their choices updated to reflect
+the custom design.
+
NAND
====