karo: tx6: factor out PMIC initialization

[karo-tx-uboot.git] / README

diff --git a/README b/README
index f00e41b9adbf04a6bd7c6a112c5bc1acb0ada3fb..06c09c5c478e3b33ff7f3b30b1e6b2954787140a 100644 (file)
--- a/README
+++ b/README
@@ -1,24 +1,8 @@
 #
-# (C) Copyright 2000 - 2012
+# (C) Copyright 2000 - 2013
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
-# See file CREDITS for list of people who contributed to this
-# project.
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; either version 2 of
-# the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-# MA 02111-1307 USA
+# SPDX-License-Identifier:     GPL-2.0+
 #
 
 Summary:
@@ -1820,6 +1804,17 @@ CBFS (Coreboot Filesystem) support
                4th and following
                BOOTP requests:         delay 0 ... 8 sec
 
+- BOOTP Random transaction ID:
+               CONFIG_BOOTP_RANDOM_ID
+
+               The standard algorithm to generate a DHCP/BOOTP transaction ID
+               by using the MAC address and the current time stamp may not
+               quite unlikely produce duplicate transaction IDs from different
+               clients in the same network. This option creates a transaction
+               ID using the rand() function. Provided that the RNG has been
+               seeded well, this should guarantee unique transaction IDs
+               always.
+
 - DHCP Advanced Options:
                You can fine tune the DHCP functionality by defining
                CONFIG_BOOTP_* symbols:
@@ -1980,6 +1975,16 @@ CBFS (Coreboot Filesystem) support
                    CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the
                    second bus.
 
+               - drivers/i2c/tegra_i2c.c:
+                - activate this driver with CONFIG_SYS_I2C_TEGRA
+                - This driver adds 4 i2c buses with a fix speed from
+                  100000 and the slave addr 0!
+
+               - drivers/i2c/ppc4xx_i2c.c
+                 - activate this driver with CONFIG_SYS_I2C_PPC4XX
+                 - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0
+                 - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1
+
                additional defines:
 
                CONFIG_SYS_NUM_I2C_BUSES