From: Benjamin Herrenschmidt <email@example.com> To: Joel Stanley <firstname.lastname@example.org> Cc: email@example.com, firstname.lastname@example.org, email@example.com, Andrew Jeffery <firstname.lastname@example.org>, email@example.com Subject: [PATCH 00/14] fsi: Fixes and Coldfire coprocessor offload Date: Wed, 27 Jun 2018 09:23:07 +1000 [thread overview] Message-ID: <firstname.lastname@example.org> (raw) This series implements support for offloading the FSI protocol bitbanging to the ColdFire secondary core of the Aspeed SoCs. The result increases FSI performance by a factor of 4, and on systems that don't support async FSI clock, provide much more regular and continuous clocking which helps reliability. Patch 1 may go a different route and was already posted a few weeks ago, I included it for completeness. Patches 2..9 add some infrastructure to the FSI core to control some of the FSI protocol delays and adjustements/fixes to the existing GPIO bitbanging master. They are "mechanical" dependencies Patch 10 moves some protocol definitions to a common place where the new master driver can find them Patch 11 is the DT binding for the new driver with comes with patch 12 Finally patch 13 and 14 update the Romulus and Palmetto board device-trees to use the new driver. There's another dependency on the Aspeed GPIO driver changes for handling with GPIO lines ownership and handshaking. The patches have been submitted and can be found for reference there: https://github.com/ozbenh/linux-ast/commits/gpio Finally, the driver needs a machine specific firmware file. The firwmare is open source and available at: https://github.com/ozbenh/cf-fsi I will submit it to linux-firmware if there's enough popular demand ;-)
next reply other threads:[~2018-06-26 23:23 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-06-26 23:23 Benjamin Herrenschmidt [this message] 2018-06-26 23:23 ` [PATCH 01/14] devres: Add devm_of_iomap() Benjamin Herrenschmidt 2018-06-26 23:23 ` [PATCH 02/14] fsi: Move code around to avoid forward declaration Benjamin Herrenschmidt 2018-06-28 4:10 ` Joel Stanley 2018-06-26 23:23 ` [PATCH 03/14] fsi: Add mechanism to set the tSendDelay and tEchoDelay values Benjamin Herrenschmidt 2018-06-26 23:23 ` [PATCH 04/14] fsi: master-gpio: Rename and adjust send delay Benjamin Herrenschmidt 2018-06-28 4:10 ` Joel Stanley -- strict thread matches above, loose matches on Subject: below -- 2018-06-26 23:25 [PATCH 00/14] fsi: Fixes and Coldfire coprocessor offload Benjamin Herrenschmidt 2018-06-26 23:20 Benjamin Herrenschmidt
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