| 00:34.14 | *** join/#openjtag ByronT (~byron-por@ByronT.nslu2-linux) |
| 07:08.26 | *** join/#openjtag ep1220 (~NN@gate.epatec.at) |
| 11:37.59 | *** join/#openjtag [g2] (~g2@g2.nslu2-linux) |
| 12:08.40 | *** join/#openjtag nslu2-log (dyoung@dyoung.nslu2-linux) |
| 12:24.47 | *** join/#openjtag prpplague (~billybob@72.22.135.245) |
| 12:39.39 | prpplague | ~seen beewoolie |
| 12:39.39 | purl | beewoolie <~beewoolie@florence.buici.com> was last seen on IRC in channel #openjtag, 43d 19h 55m 35s ago, saying: 'jacques: ping.'. |
| 12:39.47 | prpplague | ~seen beewoolie_afk |
| 12:39.47 | purl | i haven't seen 'beewoolie_afk', prpplague |
| 12:39.54 | prpplague | ~seen beewoolie_away |
| 12:39.54 | purl | i haven't seen 'beewoolie_away', prpplague |
| 12:43.09 | [g2] | prpplague, he was here yesterday |
| 12:43.30 | prpplague | [g2]: ahh ok |
| 12:43.32 | prpplague | [g2]: thanks |
| 14:51.27 | *** join/#openjtag ByronT (ByronT@ByronT.nslu2-linux) |
| 16:57.28 | *** join/#openjtag beewoolie-afk (~beewoolie@florence.buici.com) |
| 17:01.35 | prpplague | beewoolie-afk: das bee is in the house |
| 17:02.21 | beewoolie-afk | yo yo yo |
| 17:02.40 | prpplague | beewoolie-afk: question, in your 2.4 release of for the 79520, did you make any changes to the linux/arch/arm/boot/compressed/head.S ? |
| 17:02.41 | beewoolie-afk | Do you have much experience with LCD panels? |
| 17:02.58 | beewoolie-afk | I don't think I changed anything. |
| 17:03.02 | beewoolie-afk | Why? |
| 17:03.21 | prpplague | beewoolie-afk: i have some experience |
| 17:03.30 | beewoolie-afk | OK. One thing at a time. |
| 17:03.37 | prpplague | beewoolie-afk: because the cache isn't being enabled |
| 17:03.37 | beewoolie-afk | What's up with head.S? |
| 17:03.47 | beewoolie-afk | Oh. That would be bad. |
| 17:03.57 | prpplague | beewoolie-afk: lineo's code doesn't enable the armv4 cache |
| 17:03.57 | beewoolie-afk | Do you think that Lineo did that? |
| 17:04.03 | prpplague | beewoolie-afk: yea |
| 17:04.05 | beewoolie-afk | That is really wierd. |
| 17:04.24 | beewoolie-afk | Without cache, it would run really sucky. |
| 17:04.27 | prpplague | beewoolie-afk: yea |
| 17:04.51 | beewoolie-afk | Honestly, I've not spent much time with the 2.4 port. |
| 17:04.57 | beewoolie-afk | I added it to my BSP just because I could. |
| 17:05.08 | beewoolie-afk | I might look at it again when I get back to the 79520. |
| 17:05.23 | beewoolie-afk | Sharp wants me to finish up the 79520 port for 2.6. |
| 17:05.24 | prpplague | beewoolie-afk: ok, might want to double check the 2.6 then and make sure you are getting the i and d caches enabled |
| 17:05.35 | beewoolie-afk | I'll probably fold in the 2.4 stuff just to make it easy on people. |
| 17:05.36 | prpplague | beewoolie-afk: yea, i spoke to Bob Shear about that |
| 17:05.49 | beewoolie-afk | I'll check the caches. |
| 17:05.52 | prpplague | beewoolie-afk: hehe, told him you were doing a good hob |
| 17:05.53 | prpplague | job |
| 17:05.57 | beewoolie-afk | Does the /proc/cpuinfo show that caches are disabled. |
| 17:06.07 | beewoolie-afk | Thanks for the kind words. |
| 17:06.16 | beewoolie-afk | <PROTECTED> |
| 17:06.40 | prpplague | beewoolie-afk: the 2.4 kernel doesn't display cache info for the cpu in /proc/cpuinfo |
| 17:06.52 | beewoolie-afk | Hmm. |
| 17:07.02 | beewoolie-afk | it is easy enough to read the CP15 register |
| 17:07.08 | prpplague | beewoolie-afk: yea |
| 17:07.22 | prpplague | beewoolie-afk: i was planning to add some status info tomorrow |
| 17:08.07 | prpplague | beewoolie-afk: got a custom lcd issue? |
| 17:08.10 | beewoolie-afk | bbiaw, it's breakfast time. |
| 17:08.18 | prpplague | beewoolie-afk: np, i'll be here |
| 17:28.58 | [g2] | late breakfast :) |
| 19:30.25 | beewoolie-afk | ~praise [g2] |
| 19:30.25 | purl | All hail [g2]! |
| 19:30.39 | beewoolie-afk | that was fun. let's do it again |
| 19:30.52 | beewoolie-afk | ~praise [g2] |
| 19:30.52 | purl | All hail [g2]! |
| 19:31.33 | [g2] | why's that ? |
| 19:31.52 | [g2] | beewoolie-afk's is in a good mood today :) |
| 19:32.05 | beewoolie-afk | hey, it's dollface and i like the praise option |
| 19:32.15 | [g2] | musta been a goog breakfast |
| 19:32.30 | beewoolie-afk | but i'm not really geeky enough to have my own name on this chat site |
| 19:32.37 | [g2] | cool.. give dollface a hug and kiss |
| 19:32.59 | beewoolie-afk | breakfast was ok but the praise option is more interesting |
| 19:33.12 | beewoolie-afk | now i'll praise beewoolie |
| 19:33.15 | [g2] | ~praise beewoolie-afk |
| 19:33.15 | purl | All hail beewoolie-afk! |
| 19:33.25 | beewoolie-afk | ~praise beewoolie-afk |
| 19:33.25 | purl | All hail beewoolie-afk! |
| 19:33.29 | beewoolie-afk | yeah! |
| 19:33.41 | [g2] | ~karma beewoolie-afk |
| 19:33.41 | purl | beewoolie-afk has neutral karma |
| 19:33.48 | [g2] | ~karma beewoolie-afk 1 |
| 19:33.49 | purl | beewoolie-afk 1 has neutral karma |
| 19:33.55 | [g2] | doh! |
| 19:34.00 | [g2] | ~help |
| 19:34.01 | beewoolie-afk | maybe one day i'll be a computer geek too chatting is fun |
| 19:34.40 | beewoolie-afk | ~karma [g2] |
| 19:34.40 | purl | [g2] has karma of 1 |
| 19:34.59 | beewoolie-afk | bye [g2] |
| 19:35.12 | [g2] | bye |
| 19:48.07 | beewoolie-afk | [g2]: I told the story of us de-underclocking the slug to dollface and a few others. |
| 19:48.21 | [g2] | cool |
| 19:48.24 | beewoolie-afk | They especially like the bot's praise feature |
| 19:49.01 | beewoolie-afk | Did I hear right that jbowler found a solution to the shutdown problem? |
| 19:49.38 | *** join/#openjtag beewoolie_ (~beewoolie@florence.buici.com) |
| 19:49.58 | prpplague | beewoolie-afk: ho ho ho |
| 19:50.04 | prpplague | beewoolie-afk: did you have a lcd question? |
| 19:50.25 | beewoolie-afk | Yeah. |
| 19:50.49 | beewoolie-afk | I have a panel that looks right, but some of the red pels flicker, and only sometimes |
| 19:50.54 | beewoolie-afk | Do you know what can cause this? |
| 19:51.58 | prpplague | beewoolie-afk: just red? |
| 19:52.32 | beewoolie-afk | Seems like it. It behaves very strangely in particular circumstances. For example, when i draw a gray line in the first column, the gree pels don't light. |
| 19:52.36 | ByronT | drugs! |
| 19:52.37 | prpplague | beewoolie-afk: what type of display stn or tft? |
| 19:52.43 | beewoolie-afk | tft |
| 19:53.09 | prpplague | beewoolie-afk: you using 555 or 565 or 666? |
| 19:53.41 | prpplague | beewoolie-afk: this on a pl110 controler? |
| 19:54.15 | beewoolie-afk | This is a pl110. Ithink it's 555, but I cannot be sure. I haven't been able to determine how I know one way or the other. |
| 19:54.31 | beewoolie-afk | The panel supports six bits per color. |
| 19:55.17 | prpplague | beewoolie-afk: is it a sharp panel? |
| 19:55.29 | beewoolie-afk | Yeah. It's the 5.7" that LPD sells. |
| 19:55.46 | beewoolie-afk | I have the datasheet, but I haven't studied it much. I just wondered if this might be a timing issue. |
| 19:56.07 | beewoolie-afk | I've toyed with the parameters a bunch. It's really resilient to changes in the porches. |
| 19:56.11 | prpplague | beewoolie-afk: ahh, yea, its gonna probably be a problem between the pallet and timing |
| 19:56.28 | prpplague | beewoolie-afk: yea, you really need a scope to do lcd work |
| 19:56.34 | beewoolie-afk | The only one that seems to make a difference is the vertical front porch because it determines where the first line appears. |
| 19:56.37 | beewoolie-afk | I have a scope. |
| 19:56.55 | beewoolie-afk | there is no palette because this is a direct-mapped mode. |
| 19:56.56 | prpplague | beewoolie-afk: you can use devmem2 to tweak the values and do some testing from command line |
| 19:57.19 | beewoolie-afk | What is devmem2? |
| 19:58.45 | beewoolie-afk | I'll just take some time and make sure I've got all of the timing right. As far as I can tell, there isn't much I can control. |
| 19:58.57 | prpplague | beewoolie-afk: http://www.lart.tudelft.nl/lartware/port/ |
| 19:59.05 | prpplague | beewoolie-afk: look at the bottom of the page |
| 19:59.21 | prpplague | beewoolie-afk: no, the pl110 is pretty flexible |
| 19:59.37 | beewoolie-afk | Well, I have jtag, so it isn't necessary. |
| 19:59.55 | prpplague | beewoolie-afk: the 3 lcd's we've done with the pl110, we hooked up an oscope and used devmem2 to tweak values |
| 19:59.58 | beewoolie-afk | The controller is flexible, but the panel seems to not care much about the parameters. |
| 20:00.09 | prpplague | beewoolie-afk: yea, jtag will do it |
| 20:00.17 | prpplague | beewoolie-afk: you'd be surprised |
| 20:00.30 | beewoolie-afk | In fact, I usually use APEX since I can do it all from one place. |
| 20:00.35 | prpplague | beewoolie-afk: i'll grab the datasheet and ahve a look this evening |
| 20:00.48 | beewoolie-afk | Well, I've been pushing things around and nothing much changes the output. |
| 20:01.32 | prpplague | beewoolie-afk: yea, i found that to be true as well |
| 20:02.11 | beewoolie-afk | What about the frequency. If I slow down the pel clock, is there really any cost except for the fact that the display updates a little slower? |
| 20:02.20 | beewoolie-afk | Will all of the colors be the same? |
| 20:02.49 | prpplague | beewoolie-afk: i'd have to look at the datasheet, the lcd timings are very tricky |
| 20:02.57 | prpplague | beewoolie-afk: i'll grab it now |
| 20:03.36 | beewoolie-afk | I'd think so, but that doesn't seem to be the case. |
| 20:03.56 | beewoolie-afk | http://www.sharpsma.com/part.php?PartID=631 |
| 20:05.29 | prpplague | ahh thanks |
| 20:06.58 | beewoolie-afk | Looks like the panel clock can be 25MHz. I think I've got is set much lower. |
| 20:07.06 | beewoolie-afk | Perhaps that's why is looks so wierd. |
| 20:07.12 | beewoolie-afk | In fact, it kinda makes sense. |
| 20:07.41 | beewoolie-afk | If a pel is set for 10% of full intensity and the clock frequency is too low, I would expect it to flicker. |
| 20:10.24 | prpplague | one sec on the phone with the boss |
| 20:13.02 | prpplague | beewoolie-afk: yea its 555 |
| 20:13.17 | prpplague | beewoolie-afk: printing now to have a look |
| 20:13.17 | beewoolie-afk | Where did you see that? |
| 20:13.50 | prpplague | beewoolie-afk: hehe, its listed in the old lineo patch as a 555 |
| 20:13.57 | prpplague | beewoolie-afk: one sec and i'll check the docs |
| 20:14.46 | beewoolie-afk | Odd. I looked in the Lineo patch and didn't see it. But I was looking in the 7a404 implementation and not the 79520. |
| 20:15.44 | prpplague | beewoolie-afk: pl110-fb.c has the lq57 listing |
| 20:15.48 | prpplague | beewoolie-afk: which is the same |
| 20:16.19 | prpplague | beewoolie-afk: hmm the data sheet seems to look like it should be 666 |
| 20:17.16 | beewoolie-afk | Yeah, but that isn't possible with the pl110 |
| 20:17.24 | beewoolie-afk | I'd need 24 bit color. |
| 20:18.17 | prpplague | beewoolie-afk: right, but you can fake it with a 555 signal |
| 20:18.25 | prpplague | beewoolie-afk: but you have to compensate for that |
| 20:18.32 | beewoolie-afk | How is that? |
| 20:18.43 | beewoolie-afk | I think it depends on the wiring. |
| 20:19.03 | beewoolie-afk | If we wire the MS five bits, then we just lose one bit of color resolution. |
| 20:19.30 | prpplague | yea you could do that as well |
| 20:20.17 | prpplague | but you still have to have a clock cycle to account for the missing data |
| 20:22.35 | beewoolie-afk | Hmm. Why? If it takes all six bits at one time, there is no difference in timing. |
| 20:23.01 | prpplague | beewoolie-afk: duh sorry, wasn't thinking straight |
| 20:23.08 | beewoolie-afk | Is that the STN way? |
| 20:24.36 | prpplague | beewoolie-afk: one sec, i think i have the code for the logicpd we did our initial test with |
| 20:25.39 | prpplague | beewoolie-afk: is the 6th color bit tied low? |
| 20:25.47 | prpplague | beewoolie-afk: or is it floating? |
| 20:31.54 | beewoolie-afk | It will take some time to check on that. |
| 20:38.20 | beewoolie-afk | I think I've got the frequency wrong. It looks like the frequency is 25MHz for VGA and 7MHz for QVGA. |
| 20:38.29 | beewoolie-afk | In other words, I think it is already correct. |
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