Commit 96290957 authored by Wolfram Sang's avatar Wolfram Sang Committed by Grant Likely

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
......@@ -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);
......
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