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in U-Boot for each subsystem, but it has not been superseded.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, 48 deletions

diff --git a/doc/driver-model/UDM-tpm.txt b/doc/driver-model/UDM-tpm.txt
deleted file mode 100644
index 0beff4a857..0000000000
--- a/doc/driver-model/UDM-tpm.txt
+++ /dev/null
@@ -1,48 +0,0 @@
-The U-Boot Driver Model Project
-===============================
-TPM system analysis
-===================
-Marek Vasut <marek.vasut@gmail.com>
-2012-02-23
-
-I) Overview
------------
-
-There is currently only one TPM chip driver available and therefore the API
-controlling it is very much based on this. The API is very simple:
-
-  int tis_open(void);
-  int tis_close(void);
-  int tis_sendrecv(const u8 *sendbuf, size_t send_size,
-			 u8 *recvbuf, size_t *recv_len);
-
-The command operating the TPM chip only provides operations to send and receive
-bytes from the chip.
-
-II) Approach
-------------
-
-The API can't be generalised too much considering there's only one TPM chip
-supported. But it's a good idea to split the tis_sendrecv() function in two
-functions. Therefore the new API will use register the TPM chip by calling:
-
-  tpm_device_register(struct instance *i, const struct tpm_ops *ops);
-
-And the struct tpm_ops will contain the following members:
-
-  struct tpm_ops {
-    int (*tpm_open)(struct instance *i);
-    int (*tpm_close)(struct instance *i);
-    int (*tpm_send)(const uint8_t *buf, const size_t size);
-    int (*tpm_recv)(uint8_t *buf, size_t *size);
-  };
-
-The behaviour of "tpm_open()" and "tpm_close()" will basically copy the
-behaviour of "tis_open()" and "tis_close()". The "tpm_send()" will be based on
-the "tis_senddata()" and "tis_recv()" will be based on "tis_readresponse()".
-
-III) Analysis of in-tree drivers
---------------------------------
-
-There is only one in-tree driver present, the "drivers/tpm/generic_lpc_tpm.c",
-which will be simply converted as outlined in previous chapter.