dm: Remove old driver model documentation

This documentation pertains to the planned implementation of driver model
in U-Boot for each subsystem, but it has not been superseded. It is
probably better to have this documentation in the source code for each
subsystem where possible, so that docbook will pick it up. Where this does
not make sense, new documentation can be placed in some suitable file in
doc/driver-model.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 0 insertions, 329 deletions

diff --git a/doc/driver-model/UDM-watchdog.txt b/doc/driver-model/UDM-watchdog.txt
deleted file mode 100644
index 3f130635dc..0000000000
--- a/doc/driver-model/UDM-watchdog.txt
+++ /dev/null
@@ -1,329 +0,0 @@
-The U-Boot Driver Model Project
-===============================
-Watchdog device subsystem analysis
-==================================
-
-Tomas Hlavacek <tmshlvck@gmail.com>
-2012-03-09
-
-I) Overview
------------
-
-U-Boot currently implements an API for HW watchdog devices as explicit drivers
-in drivers/watchdog directory. There are also drivers for both hardware and
-software watchdog on particular CPUs implemented in arch/*/cpu/*/cpu.c. There
-are macros in include/watchdog.h that selects between SW and HW watchdog and
-assembly SW implementation.
-
-The current common interface comprises of one set out of these two possible
-variants:
-
-    1)
-    void watchdog_reset(void);
-    int watchdog_disable(void);
-    int watchdog_init(void);
-
-    2)
-    void hw_watchdog_reset(void);
-    void hw_watchdog_init(void);
-
-The watchdog implementations are also spread through board/*/*.c that in
-some cases. The API and semantics is in most cases same as the above
-mentioned common functions.
-
-
-II) Approach
-------------
-
-  1) New API
-  ----------
-
-  In the UDM each watchdog driver would register itself by a function
-
-    int watchdog_device_register(struct instance *i,
-				 const struct watchdog_device_ops *o);
-
-  The structure being defined as follows:
-
-    struct watchdog_device_ops {
-	int (*disable)(struct instance *i);
-	void (*reset)(struct instance *i);
-    };
-
-  The watchdog_init() function will be dissolved into probe() function.
-
-  2) Conversion thougths
-  ----------------------
-
-  Conversion of watchdog implementations to a new API could be divided
-  to three subsections: a) HW implementations, which are mostly compliant
-  to the above mentioned API; b) SW implementations, which are compliant
-  to the above mentioned API and c) SW implementations that are not compliant
-  to the API and has to be rectified or partially rewritten.
-
-III) Analysis of in-tree drivers
---------------------------------
-
-  drivers/watchdog/at91sam9_wdt.c
-  -------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  drivers/watchdog/ftwdt010_wdt.c
-  -------------------------------
-  The driver is ad-hoc HW watchdog. Conversion has to take into account
-  driver parts spread in include/faraday/*. Restructuring the driver and
-  code cleanup has to be considered.
-
-
-  arch/arm/cpu/arm1136/mx31/timer.c
-  ---------------------------------
-  The driver is semi-standard ad-hoc HW watchdog. Conversion has to take
-  into account driver parts spread in the timer.c file.
-
-
-  arch/arm/cpu/arm926ejs/davinci/timer.c
-  --------------------------------------
-  The driver is ad-hoc semi-standard HW watchdog. Conversion has to take
-  into account driver parts spread in the timer.c file.
-
-
-  arch/arm/cpu/armv7/omap-common/hwinit-common.c
-  ----------------------------------------------
-  The driver is non-standard ad-hoc HW watchdog. Conversion is possible
-  but functions has to be renamed and constants moved to another places.
-
-
-  arch/arm/cpu/armv7/omap3/board.c
-  --------------------------------
-  The driver is non-standard ad-hoc HW watchdog. Conversion is possible
-  but functions has to be renamed and constants moved to another places.
-
-
-  arch/blackfin/cpu/watchdog.c
-  ----------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/m68k/cpu/mcf523x/cpu.c
-  ---------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/m68k/cpu/mcf52x2/cpu.c
-  ---------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/m68k/cpu/mcf532x/cpu.c
-  ---------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/m68k/cpu/mcf547x_8x/cpu.c
-  ------------------------------
-  The driver is standard HW watchdog (there is slight naming convention
-  violation that has to be rectified). Simple conversion is possible.
-
-
-  arch/powerpc/cpu/74xx_7xx/cpu.c
-  -------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc512x/cpu.c
-  ------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc5xx/cpu.c
-  -----------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc5xxx/cpu.c
-  ------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc8260/cpu.c
-  ------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc83xx/cpu.c
-  ------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc85xx/cpu.c
-  ------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc86xx/cpu.c
-  ------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/mpc8xx/cpu.c
-  -----------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/powerpc/cpu/ppc4xx/cpu.c
-  -----------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/sh/cpu/sh2/watchdog.c
-  --------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/sh/cpu/sh3/watchdog.c
-  --------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  arch/sh/cpu/sh4/watchdog.c
-  --------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/amcc/luan/luan.c
-  ----------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/amcc/yosemite/yosemite.c
-  ------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/apollon/apollon.c
-  -----------------------
-  The driver is standard HW watchdog however the watchdog_init()
-  function is called in early initialization. Simple conversion is possible.
-
-
-  board/bmw/m48t59y.c
-  -------------------
-  Special watchdog driver. Dead code. To be removed.
-
-
-  board/davedenx/qong/qong.c
-  --------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/dvlhost/watchdog.c
-  ------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/eNET/eNET.c
-  -----------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/eltec/elppc/elppc.c
-  -------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/enbw/enbw_cmc/enbw_cmc.c
-  ------------------------------
-  Only function proxy call. Code cleanup needed.
-
-
-  board/freescale/mx31pdk/mx31pdk.c
-  ---------------------------------
-  Only function proxy call. Code cleanup needed.
-
-
-  board/gth2/gth2.c
-  -----------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/lwmon5/lwmon5.c
-  ---------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/manroland/mucmc52/mucmc52.c
-  ---------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/manroland/uc101/uc101.c
-  -----------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/mousse/m48t59y.c
-  ----------------------
-  Special watchdog driver. Dead code. To be removed.
-
-
-  board/mvblue/mvblue.c
-  ---------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/netphone/netphone.c
-  -------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/netta/netta.c
-  -------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/netta2/netta2.c
-  ---------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/omicron/calimain/calimain.c
-  ---------------------------------
-  Only function proxy call. Code cleanup needed.
-
-
-  board/pcs440ep/pcs440ep.c
-  -------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/stx/stxxtc/stxxtc.c
-  -------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/ti/omap2420h4/omap2420h4.c
-  --------------------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/ttcontrol/vision2/vision2.c
-  ---------------------------------
-  The driver is standard HW watchdog but namespace is polluted by
-  non-standard macros. Simple conversion is possible, code cleanup
-  needed.
-
-
-  board/v38b/v38b.c
-  -----------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/ve8313/ve8313.c
-  ---------------------
-  The driver is standard HW watchdog. Simple conversion is possible.
-
-
-  board/w7o/watchdog.c
-  --------------------
-  The driver is standard HW watchdog. Simple conversion is possible.