Commit 0388a8c0 authored May 28, 2008 by Mark Lord Committed by Jeff Garzik May 30, 2008

sata_mv: implement SoC guideline SATA_S11



The 5182 System-On-Chip (SOC) variant wants certain lower
bits to be cleared on any write to the PHY_MODE3 register.

If/when support is added for other SOC variants, we'll need
some way to uniquely identify the 5182, and not perform this
workaround for the others.

But for now, it is the only SOC variant we support here.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

parent b406c7a6

drivers/ata/sata_mv.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -72,7 +72,7 @@
		#include <linux/libata.h>

		#define DRV_NAME "sata_mv"
		#define DRV_VERSION "1.23"
		#define DRV_VERSION "1.24"

		enum {
		/* BAR's are enumerated in terms of pci_resource_start() terms */
		@@ -2558,6 +2558,10 @@ static void mv6_phy_errata(struct mv_host_priv hpriv, void __iomem mmio,
		m3 = readl(port_mmio + PHY_MODE3);
		m3 = (m3 & 0x1f) \| (0x5555601 << 5);

		/* Guideline 88F5182 (GL# SATA-S11) */
		if (IS_SOC(hpriv))
		m3 &= ~0x1c;

		if (fix_phy_mode4) {
		u32 m4;

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