From 0001c9f71edb5bfac8af6d2aab8f446fa8a105b1 Mon Sep 17 00:00:00 2001
From: Matt Sealey <matt@genesi-usa.com>
Date: Wed, 22 Aug 2012 09:25:40 +0000
Subject: [PATCH] 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>
---
 board/genesi/mx51_efikamx/imximage_mx.cfg | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/board/genesi/mx51_efikamx/imximage_mx.cfg b/board/genesi/mx51_efikamx/imximage_mx.cfg
index ea6b2710da6..38fa760e4bb 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
-- 
GitLab