{"action":"created","comment":{"url":"https://api.github.com/repos/htot/meta-intel-edison/pulls/comments/195936541","pull_request_review_id":129396434,"id":195936541,"node_id":"MDI0OlB1bGxSZXF1ZXN0UmV2aWV3Q29tbWVudDE5NTkzNjU0MQ==","diff_hunk":"@@ -0,0 +1,88 @@\n+From 1a737b2e31e996dea02ab9a0823f0a81284d5d2e Mon Sep 17 00:00:00 2001\n+From: Ferry Toth <ftoth@exalondelft.nl>\n+Date: Sat, 17 Mar 2018 13:54:18 +0100\n+Subject: [PATCH] serial: 8250_dma: use linear buffer for transmit","path":"meta-intel-edison-bsp/recipes-kernel/linux/files/0001-serial-8250_dma-use-linear-buffer-for-transmit.patch","position":4,"original_position":4,"commit_id":"82644247b734151edbcec7a0bfe08b1ac0b77e04","original_commit_id":"ebb3052f012b0bc78c86a85679652b976d25ae4a","user":{"login":"htot","id":16038284,"node_id":"MDQ6VXNlcjE2MDM4Mjg0","avatar_url":"https://avatars0.githubusercontent.com/u/16038284?v=4","gravatar_id":"","url":"https://api.github.com/users/htot","html_url":"https://github.com/htot","followers_url":"https://api.github.com/users/htot/followers","following_url":"https://api.github.com/users/htot/following{/other_user}","gists_url":"https://api.github.com/users/htot/gists{/gist_id}","starred_url":"https://api.github.com/users/htot/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/htot/subscriptions","organizations_url":"https://api.github.com/users/htot/orgs","repos_url":"https://api.github.com/users/htot/repos","events_url":"https://api.github.com/users/htot/events{/privacy}","received_events_url":"https://api.github.com/users/htot/received_events","type":"User","site_admin":false},"body":"Yeah, I did this. It's the meager result of months of work trying to get serial port working at 2Mb/s. \r\n\r\nOn 32 bits this is enough to send messages in one piece without interchar gap.\r\n\r\nOn 64b we have a long interrupt latency causing the fifo to overrun. When I reduce the fifo threshold the chance of loosing bytes is greatly reduced, but between 1M - 4M messages the HSU locks up. This does not happen on 32b","created_at":"2018-06-17T17:50:37Z","updated_at":"2018-06-17T17:50:37Z","html_url":"https://github.com/htot/meta-intel-edison/pull/23#discussion_r195936541","pull_request_url":"https://api.github.com/repos/htot/meta-intel-edison/pulls/23","author_association":"OWNER","_links":{"self":{"href":"https://api.github.com/repos/htot/meta-intel-edison/pulls/comments/195936541"},"html":{"href":"https://github.com/htot/meta-intel-edison/pull/23#discussion_r195936541"},"pull_request":{"href":"https://api.github.com/repos/htot/meta-intel-edison/pulls/23"}},"in_reply_to_id":195928014},"pull_request":{"url":"https://api.github.com/repos/htot/meta-intel-edison/pulls/23","id":193442966,"node_id":"MDExOlB1bGxSZXF1ZXN0MTkzNDQyOTY2","html_url":"https://github.com/htot/meta-intel-edison/pull/23","diff_url":"https://github.com/htot/meta-intel-edison/pull/23.diff","patch_url":"https://github.com/htot/meta-intel-edison/pull/23.patch","issue_url":"https://api.github.com/repos/htot/meta-intel-edison/issues/23","number":23,"state":"open","locked":false,"title":"Rocko32","user":{"login":"htot","id":16038284,"node_id":"MDQ6VXNlcjE2MDM4Mjg0","avatar_url":"https://avatars0.githubusercontent.com/u/16038284?v=4","gravatar_id":"","url":"https://api.github.com/users/htot","html_url":"https://github.com/htot","followers_url":"https://api.github.com/users/htot/followers","following_url":"https://api.github.com/users/htot/following{/other_user}","gists_url":"https://api.github.com/users/htot/gists{/gist_id}","starred_url":"https://api.github.com/users/htot/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/htot/subscriptions","organizations_url":"https://api.github.com/users/htot/orgs","repos_url":"https://api.github.com/users/htot/repos","events_url":"https://api.github.com/users/htot/events{/privacy}","received_events_url":"https://api.github.com/users/htot/received_events","type":"User","site_admin":false},"body":"I force pushed rocko64-acpi (sorry). \r\n\r\nThis branch is then on top of rocko64-acpi, but switches to 32b and turns off acpi. \r\n\r\nNevertheless we can not assume bios has no-acpi so we turn acpi=off when booting from eemc. 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