summaryrefslogtreecommitdiffstats
path: root/board/freescale/p1_p2_rdb_pc/README
diff options
context:
space:
mode:
authorWolfgang Denk <wd@denx.de>2012-07-30 20:39:52 +0200
committerWolfgang Denk <wd@denx.de>2012-07-30 20:39:52 +0200
commitb98b611502f5e0a85a1f8e15cf46c470cb105614 (patch)
treecafae797ef1f031088e7a988d8e1eaa36ea016a3 /board/freescale/p1_p2_rdb_pc/README
parent190649fb4309d1bc0fe7732fd0f951cb6440f935 (diff)
parent15ae8a31ca5d3860b0957edec4fca373daff6bb5 (diff)
downloadblackbird-obmc-uboot-b98b611502f5e0a85a1f8e15cf46c470cb105614.tar.gz
blackbird-obmc-uboot-b98b611502f5e0a85a1f8e15cf46c470cb105614.zip
Merge branch 'next' of git://git.denx.de/u-boot
* 'next' of git://git.denx.de/u-boot: MPC8xx: Fixup warning in arch/powerpc/cpu/mpc8xx/cpu.c doc: cleanup - move board READMEs into respective board directories net: sh_eth: add support for SH7757's GETHER net: sh_eth: modify the definitions of regsiter net: sh_eth: add SH_ETH_TYPE_ condition net: sh_eth: clean up for the SH7757's code net: fec_mxc: Fix MDC for xMII net: fec_mxc: Fix setting of RCR for xMII net: nfs: make NFS_TIMEOUT configurable net: Inline the new eth_setenv_enetaddr_by_index function net: allow setting env enetaddr from net device setting net/designware: Consecutive writes to the same register to be avoided CACHE: net: asix: Fix asix driver to work with data cache on net: phy: micrel: make ksz9021 phy accessible net: abort network initialization if the PHY driver fails phylib: phy_startup() should return an error code on failure net: tftp: fix type of block arg to store_block Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'board/freescale/p1_p2_rdb_pc/README')
-rw-r--r--board/freescale/p1_p2_rdb_pc/README46
1 files changed, 46 insertions, 0 deletions
diff --git a/board/freescale/p1_p2_rdb_pc/README b/board/freescale/p1_p2_rdb_pc/README
new file mode 100644
index 0000000000..44377317dd
--- /dev/null
+++ b/board/freescale/p1_p2_rdb_pc/README
@@ -0,0 +1,46 @@
+Overview
+--------
+P1_P2_RDB_PC represents a set of boards including
+ P1020MSBG-PC
+ P1020RDB-PC
+ P1020UTM-PC
+ P1021RDB-PC
+ P1024RDB
+ P1025RDB
+ P2020RDB-PC
+
+They have similar design of P1020RDB but have DDR3 instead of DDR2. P2020RDB-PC
+has 64-bit DDR. All others have 32-bit DDR.
+
+Key features on these boards include:
+ * DDR3
+ * NOR flash
+ * NAND flash (on RDB's only)
+ * SPI flash (on RDB's only)
+ * SDHC/MMC card slot
+ * VSC7385 Ethernet switch (on P1020MBG, P1020RDB, & P1021RDB)
+ * PCIE slot and mini-PCIE slots
+
+As these boards use soldered DDR chips not regular DIMMs, an on-board EEPROM
+is used to store SPD data. In case of absent or corrupted SPD, falling back
+to timing data embedded in the source code will be used. Raw timing data is
+extracted from DDR chip datasheet. Different speeds of DDR are supported with
+this approach. ODT option is forced to fit this set of boards, again because
+they don't have regular DIMMs.
+
+CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS is defined as 5ms to meet specification
+for writing timing.
+
+VSC firmware Address is defined by default in config file for eTSEC1.
+
+SD width is based off DIP switch. DIP switch is detected on the
+board by reading i2c bus and setting the appropriate mux values.
+
+Some boards have QE module in the silicon (P1021 and P1025). QE and eLBC have
+pins multiplexing. QE function needs to be disabled to access Nor Flash and
+CPLD. QE-UEC and QE-UART can be enabled for linux kernel by setting "qe"
+in hwconfig. In addition, QE-UEC and QE-TDM also have pins multiplexing, to
+enable QE-TDM for linux kernel, set "qe;tdm" in hwconfig. Syntax is as below
+
+'setenv hwconfig qe' to enable QE UEC/UART and disable Nor-Flash/CPLD.
+'setenv hwconfig 'qe;tdm'' to enalbe QE TDM and disable Nor-Flash/CPLD.
OpenPOWER on IntegriCloud