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| author | Wolfram Sang <w.sang@pengutronix.de> | 2010-10-15 14:18:21 +0200 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2010-10-15 14:31:47 +0200 |
| commit | a5360df9413987ed56ce8cffad678e557eff92e1 (patch) | |
| tree | ca6f3988aeeea411441e001f10ee285d7600fcf8 /drivers/pcmcia/o2micro.h | |
| parent | 3c7d2b765df974ae29a9f1d5a62e15b243a36763 (diff) | |
| download | talos-obmc-linux-a5360df9413987ed56ce8cffad678e557eff92e1.tar.gz talos-obmc-linux-a5360df9413987ed56ce8cffad678e557eff92e1.zip | |
pcmcia/yenta: guide users in case of problems with O2-bridges
Some cards need the speedups on, some need them off. As we can't detect
this reliably, at least give the users a hint how to tweak the system.
Reported-by: David Bluecame <david.bluecame@gmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia/o2micro.h')
| -rw-r--r-- | drivers/pcmcia/o2micro.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pcmcia/o2micro.h b/drivers/pcmcia/o2micro.h index e74bebac2695..5096e92c7a4c 100644 --- a/drivers/pcmcia/o2micro.h +++ b/drivers/pcmcia/o2micro.h @@ -153,14 +153,14 @@ static int o2micro_override(struct yenta_socket *socket) if (use_speedup) { dev_info(&socket->dev->dev, - "O2: enabling read prefetch/write burst\n"); + "O2: enabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=off'\n"); config_writeb(socket, O2_RESERVED1, a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); config_writeb(socket, O2_RESERVED2, b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); } else { dev_info(&socket->dev->dev, - "O2: disabling read prefetch/write burst\n"); + "O2: disabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=on'\n"); config_writeb(socket, O2_RESERVED1, a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); config_writeb(socket, O2_RESERVED2, |
