Dear Fabio, On Tue, 28 Jul 2015 09:55:28 -0300 Fabio Estevam <festevam@xxxxxxxxx> wrote: > On Tue, Jul 28, 2015 at 3:07 AM, David Jander <david@xxxxxxxxxxx> wrote: > > > IMHO Spewing out a few corrupt characters during startup (which curiously > > also appear sometimes due to other reasons), is a lot less of a problem > > that a hanging system! > > A few corrupted characters? In my case 1 or 2.... > Look at this: > > 0øgUª%à˜hyº”VÑáE%%ªEàÕþ0p~ï > Ô¨ul¸j.#òm8žE7Ç`í]òm‘n›0$h?>òàcÝ1Fàpýxð¸5D?â0$¸u}OGhý}ü¢0$8E¨='7Ô"óbíOðÁb¡·Ñ¨g5]0$¨êý˜h)Aý > q4tè|hs¹ÑÕ<êp¿hs¹4776?hóY~kiÓ~˜Áâ£0ªuG%*WxùÍâþÐè5F'¼E_0x5g'¨ghC¬0$ºuT¸?¼U4wAˆw%•âð¸–˜Ô > qèÁnyäp™0$èG?5U4(=8T‰˜h`m0 {bä©hAx(zcA¨˜háŸjc_bu‰0$('ÑC`cA > aQ"á[p¨[baM1Ð(ycbdo`r-hsÁük˜"cAZð8áéjba5ò©0(àcEdgÈC¼žJ > 5LÑùð8W5ß0ú5¸gǘh~pÁ5]hs<xù6]áAb¹C7 > ]`s2ñ(Ç`Ýxë³øW˜hY|¸(gW`]|Æà?Táb)Ì5% MwG˜`M|> > 5º˜h~£bptb¯Ï<«'e'o÷è% > 7õ**˜øÔÕu7E'U%-uwèrœ%/77*0d*xí]QU }]|š`ˆ<E0dºM6 > ñpˆWè}agð-+(aç0$ºmf?`ˆ' ø<Ð8…6% > Á󔜸wT˜xnñU%8W`:Mí\Wºw}°=Ôâ`yòzç»p7]6B3¼Eœ_0D·ep…ÕxÕ˜4'%M¼x3Bhmà4Th}ArOyM4hAâñÁæ-Õc*c¶0d4U(*à0,£(cÕ>Tj¶0lø7ðÔifŽ*wÕ0lx(íx¨Ÿqx\u÷õ´Ò0?¸iI4ð47U¨5 > 'gt–Ž?9xÃ|`c~peu}=÷ègÐœôùx > e'Eu%T‰˜hÃ|b~>èy`øð¦³'Ô?IãdhÜbïÙümQ|ÔÕ0lÝèkâüŸ:D–<ôyE¸'eu÷0d(e×0 > uWeÇ0l*=8ט˜-'%5=0,¨-'%5=à0,¨'gE5|ð!}ª'7ט<Eºg<xD¢5'7×0lªUtùðÀ/Qܘ¼\/eh6×0lè?=r}6`¾”ÔM > 7=T?záù%7OwG0$8oÑ:}è´ww]0$YümOè›òcýä9oEQŸBîhvyÝ > oI>òA1pf~ueuwôêUÕuEÅ0D"üwz|`/u¸ªE8w‚14G%Wu”èŘüÔ=u555(]üð¼¨=%”Шê.ilxiùTÕ˜ôÐô7ð0,h6Guo5×üè-/ÝÐÓ > ?Ot5×üè-'7¨E-%?ÐS0òè '(?G==85÷ôPB;\p4w3`lhê®Nut¸? thc·0 > "üe%U¸0,]zûÏlîhL¨*üǘøèGD’xc]¼ê?ÕYñ0l¸e} > w0,êWuuåT'e'|áWìy¨-ýh$±mºD%=ÇüTCcÓháeuew=oߘøeÔ/gE57ggÕôTCcCüå˜ô`þ}m1T > 5èl¹Sý`hiäWwâiï(àml`í>`m¬WkIly1%]~ n+oü0%“ðI¨u%pÌê.+ > œe]=÷0M*gW=G''D%}ÕŠ%75-5uPð,]˜Äbmüû}lênþýñ0m]n=Ew=T”-]0e¨w4Éu•©jM÷0%]o=E¨}_hÇ|o‰=Eb7'üp¸7*Íh“ > ˜WüáÏ|É'}?øÆg¸o?57¨dT'dWhó;þ0-ªhn+oü˜9Lᘼt,î0%¨éã45¸¨èŸÔ‘W4õ*p[>5x|`Ærccrëyøìí|î㓹Tjãïp'7}°˜TÔø$e¸y>öýhfmí1Àjcbâj{}ôÕ‰¨u”8v©w=M˜<TѸ÷˜¼ > A3ù > Ã<RC¦˜7=¡÷˜=Lº'm:w\u==…üàóê5Ý0j%5%טjúsÃz)Iæ0-¨D”GweU$ߘ=V•}8eŘ=VPœ³xiü˜=-%5ô×0EhòoÉü÷C}°`|¾S|¸;P[áY7¦púuU8-bEªb‹*ú˜Gmcrgˆ?%úguG%ÕÄVbã]Bíþyw=Gàé_þý0-Íà}Y>òýà&&l©u÷h.©u÷%Íp%'5'|ð½aG•’ÅÖšÉnîh1VB7tê'|áÅ»7=G7É0-êM%''ü0m]rsÍïðò›W_zç0%81Qßyk¼˜ˆ78}K„ùu > 'EÝð(%']À~÷ø'·/ß7×Wk>EwE%7}osòm‹uâsz¯8%QC¸˜Cýéjâkfâ|\טGkÝìc‹G5(Eg5ü˜SjýÍbPþ˜WjýÍb5÷ðküícõgVü˜ˆ4oO*ø55Ö˜Š>7*:U7ÜטŠuwðí}£?EF5ü0¨ohêmÁü}=àsKüíCõÅyŸ0%j+ý<Û*ø55×WýèjãKfã_|Ü×Wküícuœ(Eg5üSküìcËÔWküìcY5'G˜GjýÍb7/eǘhl > ã%jjÄVHvíg7PKh›=h‡³%g˜hÔ8‰}ôPá5x5'g=7Ý"˜hlâ+øAœ7M==ðp0-8M˜hnšòmO~ƒÁWlíÈgEuwð\ÕÆ~»pD5è×077T-7$:emq³4=èטhlcÃno“„Ì_0%]bãÏøŠœaû0—42c7å˜D'gGÔå-Si_ò0%"üwzç(7pF¯˜h:[h?¸0$x|³5 > ]˜h:[h?¸0,3ô—¨0Dxæüã]þ㉘xtG¸=è87ý0$*'7×0$¸LgUߘh*púg¨oüžA`cAü0$ > hí=ÐQ5Dà0DÀªg[ 1.121820] EXT2-fs (mmcblk0p2): error: couldn't mount > because of unsupported optional features (240) [ 1.133338] EXT4-fs > (mmcblk0p2): couldn't mount as ext3 due to feature incompatibilities > [ 1.171330] EXT4-fs (mmcblk0p2): mounted filesystem with ordered > data mode. Opts: (null) > [ 1.181562] VFS: Mounted root (ext4 filesystem) readonly on device 179:2. > [ 1.206286] devtmpfs: mounted > [ 1.209851] Freeing unused kernel memory: 428K (80a3d000 - 80aa8000) > [ 1.262378] mmc2: host does not support reading read-only switch, > assuming write-enable > [ 1.276443] mmc2: new high speed SDHC card at address 0001 > [ 1.282878] mmcblk1: mmc2:0001 00000 7.60 GiB > [ 1.289501] mmcblk1: p1 p2 > > Do you think this is acceptable? Yuck! No, of course not. Why is this? I don't have this issue, and I'd really like to understand why you have it? Can you explain what happens to the UART on your board exactly after power-on until this? > You can't fix one problem by introducing other nasty one. That is of course not the idea! I only don't really see how this can be related. My patch does nothing more that what a simple power-on reset would also do. Best regards, -- David Jander Protonic Holland. -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html