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author | 2016-07-18 13:45:27 -0300 | |
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committer | 2016-07-18 13:45:27 -0300 | |
commit | 5e739096c2fa3ef8d56ec1d1fab8e10825fc1c61 (patch) | |
tree | 070ba0d801b61e88682a845a2a6f358598634452 /Documentation/media | |
parent | [media] cx2341x.rst: add contents of fw-memory.txt (diff) | |
download | linux-5e739096c2fa3ef8d56ec1d1fab8e10825fc1c61.tar.gz linux-5e739096c2fa3ef8d56ec1d1fab8e10825fc1c61.tar.bz2 linux-5e739096c2fa3ef8d56ec1d1fab8e10825fc1c61.zip |
[media] cx2341x.rst: add the contents of fw-upload.txt
Add the contents of fw-upload.txt, after converting it to
ReST format.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media')
-rw-r--r-- | Documentation/media/v4l-drivers/cx2341x.rst | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/Documentation/media/v4l-drivers/cx2341x.rst b/Documentation/media/v4l-drivers/cx2341x.rst index ed7e536c9bd0..0d1bd26623b9 100644 --- a/Documentation/media/v4l-drivers/cx2341x.rst +++ b/Documentation/media/v4l-drivers/cx2341x.rst @@ -152,6 +152,59 @@ Missing documentation - Decoder VTRACE event +The cx2341x firmware upload +--------------------------- + +This document describes how to upload the cx2341x firmware to the card. + +How to find +~~~~~~~~~~~ + +See the web pages of the various projects that uses this chip for information +on how to obtain the firmware. + +The firmware stored in a Windows driver can be detected as follows: + +- Each firmware image is 256k bytes. +- The 1st 32-bit word of the Encoder image is 0x0000da7 +- The 1st 32-bit word of the Decoder image is 0x00003a7 +- The 2nd 32-bit word of both images is 0xaa55bb66 + +How to load +~~~~~~~~~~~ + +- Issue the FWapi command to stop the encoder if it is running. Wait for the + command to complete. +- Issue the FWapi command to stop the decoder if it is running. Wait for the + command to complete. +- Issue the I2C command to the digitizer to stop emitting VSYNC events. +- Issue the FWapi command to halt the encoder's firmware. +- Sleep for 10ms. +- Issue the FWapi command to halt the decoder's firmware. +- Sleep for 10ms. +- Write 0x00000000 to register 0x2800 to stop the Video Display Module. +- Write 0x00000005 to register 0x2D00 to stop the AO (audio output?). +- Write 0x00000000 to register 0xA064 to ping? the APU. +- Write 0xFFFFFFFE to register 0x9058 to stop the VPU. +- Write 0xFFFFFFFF to register 0x9054 to reset the HW blocks. +- Write 0x00000001 to register 0x9050 to stop the SPU. +- Sleep for 10ms. +- Write 0x0000001A to register 0x07FC to init the Encoder SDRAM's pre-charge. +- Write 0x80000640 to register 0x07F8 to init the Encoder SDRAM's refresh to 1us. +- Write 0x0000001A to register 0x08FC to init the Decoder SDRAM's pre-charge. +- Write 0x80000640 to register 0x08F8 to init the Decoder SDRAM's refresh to 1us. +- Sleep for 512ms. (600ms is recommended) +- Transfer the encoder's firmware image to offset 0 in Encoder memory space. +- Transfer the decoder's firmware image to offset 0 in Decoder memory space. +- Use a read-modify-write operation to Clear bit 0 of register 0x9050 to + re-enable the SPU. +- Sleep for 1 second. +- Use a read-modify-write operation to Clear bits 3 and 0 of register 0x9058 + to re-enable the VPU. +- Sleep for 1 second. +- Issue status API commands to both firmware images to verify. + + How to call the firmware API ---------------------------- |