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-rw-r--r--Documentation/00-INDEX2
-rw-r--r--Documentation/admin-guide/kernel-parameters.rst1
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt2
-rw-r--r--Documentation/blackfin/00-INDEX6
-rw-r--r--Documentation/blackfin/bfin-gpio-notes.txt71
-rw-r--r--Documentation/blackfin/bfin-spi-notes.txt16
6 files changed, 1 insertions, 97 deletions
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX
index b56b88e20196..ee2808415f64 100644
--- a/Documentation/00-INDEX
+++ b/Documentation/00-INDEX
@@ -66,8 +66,6 @@ backlight/
- directory with info on controlling backlights in flat panel displays
bcache.txt
- Block-layer cache on fast SSDs to improve slow (raid) I/O performance.
-blackfin/
- - directory with documentation for the Blackfin arch.
block/
- info on the Block I/O (BIO) layer.
blockdev/
diff --git a/Documentation/admin-guide/kernel-parameters.rst b/Documentation/admin-guide/kernel-parameters.rst
index 7242cbda15dd..b8d0bc07ed0a 100644
--- a/Documentation/admin-guide/kernel-parameters.rst
+++ b/Documentation/admin-guide/kernel-parameters.rst
@@ -89,7 +89,6 @@ parameter is applicable::
APM Advanced Power Management support is enabled.
ARM ARM architecture is enabled.
AX25 Appropriate AX.25 support is enabled.
- BLACKFIN Blackfin architecture is enabled.
CLK Common clock infrastructure is enabled.
CMA Contiguous Memory Area support is enabled.
DRM Direct Rendering Management support is enabled.
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 30a8d0635898..c272ea194ff3 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1025,7 +1025,7 @@
address. The serial port must already be setup
and configured. Options are not yet supported.
- earlyprintk= [X86,SH,BLACKFIN,ARM,M68k,S390]
+ earlyprintk= [X86,SH,ARM,M68k,S390]
earlyprintk=vga
earlyprintk=efi
earlyprintk=sclp
diff --git a/Documentation/blackfin/00-INDEX b/Documentation/blackfin/00-INDEX
deleted file mode 100644
index 265a1effebde..000000000000
--- a/Documentation/blackfin/00-INDEX
+++ /dev/null
@@ -1,6 +0,0 @@
-00-INDEX
- - This file
-bfin-gpio-notes.txt
- - Notes in developing/using bfin-gpio driver.
-bfin-spi-notes.txt
- - Notes for using bfin spi bus driver.
diff --git a/Documentation/blackfin/bfin-gpio-notes.txt b/Documentation/blackfin/bfin-gpio-notes.txt
deleted file mode 100644
index d245f39c3d01..000000000000
--- a/Documentation/blackfin/bfin-gpio-notes.txt
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * File: Documentation/blackfin/bfin-gpio-notes.txt
- * Based on:
- * Author:
- *
- * Created: $Id: bfin-gpio-note.txt 2008-11-24 16:42 grafyang $
- * Description: This file contains the notes in developing/using bfin-gpio.
- *
- *
- * Rev:
- *
- * Modified:
- * Copyright 2004-2008 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- */
-
-
-1. Blackfin GPIO introduction
-
- There are many GPIO pins on Blackfin. Most of these pins are muxed to
- multi-functions. They can be configured as peripheral, or just as GPIO,
- configured to input with interrupt enabled, or output.
-
- For detailed information, please see "arch/blackfin/kernel/bfin_gpio.c",
- or the relevant HRM.
-
-
-2. Avoiding resource conflict
-
- Followed function groups are used to avoiding resource conflict,
- - Use the pin as peripheral,
- int peripheral_request(unsigned short per, const char *label);
- int peripheral_request_list(const unsigned short per[], const char *label);
- void peripheral_free(unsigned short per);
- void peripheral_free_list(const unsigned short per[]);
- - Use the pin as GPIO,
- int bfin_gpio_request(unsigned gpio, const char *label);
- void bfin_gpio_free(unsigned gpio);
- - Use the pin as GPIO interrupt,
- int bfin_gpio_irq_request(unsigned gpio, const char *label);
- void bfin_gpio_irq_free(unsigned gpio);
-
- The request functions will record the function state for a certain pin,
- the free functions will clear its function state.
- Once a pin is requested, it can't be requested again before it is freed by
- previous caller, otherwise kernel will dump stacks, and the request
- function fail.
- These functions are wrapped by other functions, most of the users need not
- care.
-
-
-3. But there are some exceptions
- - Kernel permit the identical GPIO be requested both as GPIO and GPIO
- interrupt.
- Some drivers, like gpio-keys, need this behavior. Kernel only print out
- warning messages like,
- bfin-gpio: GPIO 24 is already reserved by gpio-keys: BTN0, and you are
-configuring it as IRQ!
-
- Note: Consider the case that, if there are two drivers need the
- identical GPIO, one of them use it as GPIO, the other use it as
- GPIO interrupt. This will really cause resource conflict. So if
- there is any abnormal driver behavior, please check the bfin-gpio
- warning messages.
-
- - Kernel permit the identical GPIO be requested from the same driver twice.
-
-
-
diff --git a/Documentation/blackfin/bfin-spi-notes.txt b/Documentation/blackfin/bfin-spi-notes.txt
deleted file mode 100644
index eae6eaf2a09d..000000000000
--- a/Documentation/blackfin/bfin-spi-notes.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-SPI Chip Select behavior:
-
-With the Blackfin on-chip SPI peripheral, there is some logic tied to the CPHA
-bit whether the Slave Select Line is controlled by hardware (CPHA=0) or
-controlled by software (CPHA=1). However, the Linux SPI bus driver assumes that
-the Slave Select is always under software control and being asserted during
-the entire SPI transfer. - And not just bits_per_word duration.
-
-In most cases you can utilize SPI MODE_3 instead of MODE_0 to work-around this
-behavior. If your SPI slave device in question requires SPI MODE_0 or MODE_2
-timing, you can utilize the GPIO controlled SPI Slave Select option instead.
-In this case, you should use GPIO based CS for all of your slaves and not just
-the ones using mode 0 or 2 in order to guarantee correct CS toggling behavior.
-
-You can even use the same pin whose peripheral role is a SSEL,
-but use it as a GPIO instead.