summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMatt Sealey <matt@genesi-usa.com>2012-08-22 09:25:40 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-09-01 14:58:29 +0200
commit0001c9f71edb5bfac8af6d2aab8f446fa8a105b1 (patch)
tree61d1c43d77a2bca73643d21c8b7f54d039f985a6
parentff9ab7c2e48657fb35a465fe5c681ad3efaf8289 (diff)
downloadu-boot-imx-0001c9f71edb5bfac8af6d2aab8f446fa8a105b1.zip
u-boot-imx-0001c9f71edb5bfac8af6d2aab8f446fa8a105b1.tar.gz
u-boot-imx-0001c9f71edb5bfac8af6d2aab8f446fa8a105b1.tar.bz2
efikamx: configure Smarttop PCBID and LED pads in DCD for convenience
PCBID pads seem to need time to settle due to external pulldowns, otherwise we are reading floating GPIO pins with implicit pad pullups and get the wrong data. However we can't "wait" at the time we need them before relocation, since timers are not available. The time taken to get from DCD to the code requiring the pads set seems to be more than long enough (even with caches enabled). We have space in the DCD due to the DDR settings changes to configure all the pad settings we need for this, plus the LED pad settings too which reduces the amount of code required later on. Signed-off-by: Matt Sealey <matt@genesi-usa.com> Acked-by: Stefano Babic <sbabic@denx.de>
-rw-r--r--board/genesi/mx51_efikamx/imximage_mx.cfg10
1 files changed, 10 insertions, 0 deletions
diff --git a/board/genesi/mx51_efikamx/imximage_mx.cfg b/board/genesi/mx51_efikamx/imximage_mx.cfg
index ea6b271..38fa760 100644
--- a/board/genesi/mx51_efikamx/imximage_mx.cfg
+++ b/board/genesi/mx51_efikamx/imximage_mx.cfg
@@ -45,6 +45,16 @@ BOOT_FROM spi
# Address absolute address of the register
# value value to be stored in the register
+# Essential GPIO settings to be done as early as possible
+# PCBIDn pad settings are all the defaults except #2 which needs HVE off
+DATA 4 0x73fa8134 0x3 # PCBID0 ALT3 GPIO 3_16
+DATA 4 0x73fa8130 0x3 # PCBID1 ALT3 GPIO 3_17
+DATA 4 0x73fa8128 0x3 # PCBID2 ALT3 GPIO 3_11
+DATA 4 0x73fa8504 0xe4 # PCBID2 PAD ~HVE
+DATA 4 0x73fa8198 0x3 # LED0 ALT3 GPIO 3_13
+DATA 4 0x73fa81c4 0x3 # LED1 ALT3 GPIO 3_14
+DATA 4 0x73fa81c8 0x3 # LED2 ALT3 GPIO 3_15
+
# DDR bus IOMUX PAD settings
DATA 4 0x73fa850c 0x20c5 # SDODT1
DATA 4 0x73fa8510 0x20c5 # SDODT0