ARM: tegra: add generic memory vendor matching

Update tegra_init_emc to provide generic memory
vendor matching.  Read values from EMC_MRR_0, to
uniquely identify memory types and compare them
to table of memory passed in.

Change-Id: Ie116fa6f497076149c87ff6c0ae0621309bac65f
Signed-off-by: James Wylder <james.wylder@motorola.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/arch/arm/mach-tegra/tegra2_emc.h b/arch/arm/mach-tegra/tegra2_emc.h
index 19f08cb31603..871387fdeea3 100644
--- a/arch/arm/mach-tegra/tegra2_emc.h
+++ b/arch/arm/mach-tegra/tegra2_emc.h
@@ -22,6 +22,17 @@ struct tegra_emc_table {
 	u32 regs[TEGRA_EMC_NUM_REGS];
 };
 
+struct tegra_emc_chip {
+	const char *description;
+	int mem_manufacturer_id; /* LPDDR2 MR5 or -1 to ignore */
+	int mem_revision_id1;    /* LPDDR2 MR6 or -1 to ignore */
+	int mem_revision_id2;    /* LPDDR2 MR7 or -1 to ignore */
+	int mem_pid;             /* LPDDR2 MR8 or -1 to ignore */
+
+	const struct tegra_emc_table *table;
+	int table_size;
+};
+
 int tegra_emc_set_rate(unsigned long rate);
 long tegra_emc_round_rate(unsigned long rate);
-void tegra_init_emc(const struct tegra_emc_table *table, int table_size);
+void tegra_init_emc(const struct tegra_emc_chip *chips, int chips_size);