Commit 2fa0f939 authored Oct 21, 2010 by Simon Guinot Committed by Nicolas Pitre Oct 21, 2010

[ARM] Kirkwood: enhance TCLK detection



According to the Marvell LSP, the Sample at Reset regiter bit 21 can be
used to detect TCLK on 6281 and 6282 devices.

This patch has only been tested on LaCie boards.

Signed-off-by: Simon Guinot <sguinot@lacie.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>

parent af9a2d00

arch/arm/mach-kirkwood/common.c

+3 −4

Original line number	Diff line number	Diff line
		@@ -854,9 +854,8 @@ int __init kirkwood_find_tclk(void)

		kirkwood_pcie_id(&dev, &rev);

		if ((dev == MV88F6281_DEV_ID && (rev == MV88F6281_REV_A0 \|\|
		rev == MV88F6281_REV_A1)) \|\|
		(dev == MV88F6282_DEV_ID))
		if (dev == MV88F6281_DEV_ID \|\| dev == MV88F6282_DEV_ID)
		if (((readl(SAMPLE_AT_RESET) >> 21) & 1) == 0)
		return 200000000;

		return 166666667;