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authorHeiko Schocher <hs@denx.de>2012-05-14 20:24:14 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-07-07 14:07:21 +0200
commit14b9f16c401206097c361ae4198c6b2ece805964 (patch)
treecfd4f27d8c4aa834be8a2bf92f33451b5055e064 /doc
parent2ab281037555de1710aa597531562fe071470198 (diff)
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arm,davinci: update for enbw_cmc board
- change gpio pin settings: - gpio pin 6[13] (PLC reset) default value low - gpio pin 6[0] (TPM reset) default value low - 4 new GPIO pins pin i/o name - 3[9] input Board Type - 2[7] input HW-ID0 - 2[6] input HW-ID1 - 2[3] input HW-ID2 - read board type and hw id from gpio pins on the enbw_cmc board, and use board type for setting up different gpio pin settings. - do not pass "davinci_mmc.use_dma=0" to linux, as MMC now works with DMA. - update logbuf support: store post word in RTC scratch register - add support for configuring KSZ8864RMN switch through a config file on u-boot startup. For more infos see: doc/README.switch_config Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Tom Rini <tom.rini@gmail.com> Cc: Christian Riesch <christian.riesch@omicron.at> Cc: Sandeep Paulraj <s-paulraj@ti.com>
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+On the enbw_cmc board is a KSZ8864RMN switch which needs
+configured through spi before working. This is done on
+startup from u-boot through a config file stored at an
+address specified in the "hwconfig" environment variable,
+subcommand "config".
+
+For example on the enbw_cmc board:
+
+hwconfig=switch:lan=on,pwl=off,config=0x60160000
+
+The file has the following structure:
+
+- a comment starts with a '#' or a ';' and ends with a newline
+- The switch needs for its config a reg/value pair, so we
+ have two columns in the file:
+ reg : contains the register address
+ value: contains a 8 bit register value
+ This 2 columns are seperated through space or tab.
+
+example (minimal configuration on the enbw_cmc board):
+
+;reg value comment
+;-----------------------------------------
+0x01 0x00
+0x01 0x01 ; Start Switch with this configuration