powerpc/tqm85xx: add a quirk for ti1520 PCMCIA bridge

By default ti1520 bridge expects an input clock on CLOCK pin (to control
power chip). However on this boards CLOCK should be generated by PCI1520
itself. Add a quirk that enables internal 16 KHz clock generation on
this pin.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Dmitry Eremin-Solenikov 2010-07-21 10:33:24 +00:00 committed by Kumar Gala
parent 07c638398f
commit e9502fbe2d
1 changed files with 21 additions and 0 deletions

View File

@ -151,6 +151,27 @@ static void tqm85xx_show_cpuinfo(struct seq_file *m)
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
} }
static void __init tqm85xx_ti1520_fixup(struct pci_dev *pdev)
{
unsigned int val;
/* Do not do the fixup on other platforms! */
if (!machine_is(tqm85xx))
return;
dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");
/*
* Enable P2CCLK bit in system control register
* to enable CLOCK output to power chip
*/
pci_read_config_dword(pdev, 0x80, &val);
pci_write_config_dword(pdev, 0x80, val | (1 << 27));
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
tqm85xx_ti1520_fixup);
static struct of_device_id __initdata of_bus_ids[] = { static struct of_device_id __initdata of_bus_ids[] = {
{ .compatible = "simple-bus", }, { .compatible = "simple-bus", },
{ .compatible = "gianfar", }, { .compatible = "gianfar", },