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Commit e9502fbe authored by Dmitry Eremin-Solenikov's avatar Dmitry Eremin-Solenikov Committed by Kumar Gala
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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: default avatarDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 07c63839

arch/powerpc/platforms/85xx/tqm85xx.c

+21 −0
Original line number Diff line number Diff line
@@ -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));

}



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[] = {

	{ .compatible = "simple-bus", },

	{ .compatible = "gianfar", },