Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f88c480dac88a754f84e943cb5539d59cda3c089 Commit: f88c480dac88a754f84e943cb5539d59cda3c089 Parent: 92d499d991ec4f5cbd00d6f33967eab9d3ee8d6c Author: sonic zhang <[EMAIL PROTECTED]> AuthorDate: Tue Nov 27 12:47:39 2007 +0800 Committer: Jeff Garzik <[EMAIL PROTECTED]> CommitDate: Sat Dec 1 17:35:58 2007 -0500
Set proper ATA UDMA mode for bf548 according to system clock. UDMA Mode - Frequency compatibility UDMA5 - 100 MB/s - SCLK = 133 MHz UDMA4 - 66 MB/s - SCLK >= 80 MHz UDMA3 - 44.4 MB/s - SCLK >= 50 MHz UDMA2 - 33 MB/s - SCLK >= 40 MHz Signed-off-by: Sonic Zhang <[EMAIL PROTECTED]> Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]> --- drivers/ata/pata_bf54x.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c index 81db405..088a41f 100644 --- a/drivers/ata/pata_bf54x.c +++ b/drivers/ata/pata_bf54x.c @@ -1489,6 +1489,8 @@ static int __devinit bfin_atapi_probe(struct platform_device *pdev) int board_idx = 0; struct resource *res; struct ata_host *host; + unsigned int fsclk = get_sclk(); + int udma_mode = 5; const struct ata_port_info *ppi[] = { &bfin_port_info[board_idx], NULL }; @@ -1507,6 +1509,11 @@ static int __devinit bfin_atapi_probe(struct platform_device *pdev) if (res == NULL) return -EINVAL; + while (bfin_port_info[board_idx].udma_mask>0 && udma_fsclk[udma_mode] > fsclk) { + udma_mode--; + bfin_port_info[board_idx].udma_mask >>= 1; + } + /* * Now that that's out of the way, wire up the port.. */ - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html