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Commit 96290957 authored by Wolfram Sang's avatar Wolfram Sang Committed by Grant Likely
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powerpc/mpc5200: Don't touch pipelining for MPC5200B 



MPC5200 needs to have pipelining disabled for ATA to work. MPC5200B does not.
So, for the latter, don't touch the original setting from the bootloader.

Signed-off-by: default avatarWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 40847993

arch/powerpc/platforms/52xx/mpc52xx_common.c

+5 −2
Original line number Diff line number Diff line
@@ -99,10 +99,13 @@ mpc5200_setup_xlb_arbiter(void) 
	out_be32(&xlb->master_pri_enable, 0xff);

	out_be32(&xlb->master_priority, 0x11111111);



	/* Disable XLB pipelining

	/*

	 * Disable XLB pipelining

	 * (cfr errate 292. We could do this only just before ATA PIO

	 *  transaction and re-enable it afterwards ...)

	 * Not needed on MPC5200B.

	 */

	if ((mfspr(SPRN_SVR) & MPC5200_SVR_MASK) == MPC5200_SVR)

		out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS);



	iounmap(xlb);