diff options
| author | Dave Gerlach <d-gerlach@ti.com> | 2019-04-02 19:57:42 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2019-04-09 18:31:51 +0300 |
| commit | 6c110561eb2d4d1496961c13a92f96f29eea7c72 (patch) | |
| tree | 8c1237a3dbc0f2bafb8df589b2f9c1dbf8c04a69 /drivers/memory/ti-emif-pm.c | |
| parent | 9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff) | |
| download | linux-6c110561eb2d4d1496961c13a92f96f29eea7c72.tar.xz | |
memory: ti-emif-sram: Add ti_emif_run_hw_leveling for DDR3 hardware leveling
In certain situations, such as when returning from low power modes, the
EMIF must re-run hardware leveling to properly restore DDR3 access.
This is accomplished by introducing a new ti-emif-sram-pm call,
ti_emif_run_hw_leveling, to check if DDR3 is in use and if so, trigger
the full write and read leveling processes.
Suggested-by: Brad Griffis <bgriffis@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/memory/ti-emif-pm.c')
| -rw-r--r-- | drivers/memory/ti-emif-pm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/memory/ti-emif-pm.c b/drivers/memory/ti-emif-pm.c index 2250d03ea17f..ab07aa163138 100644 --- a/drivers/memory/ti-emif-pm.c +++ b/drivers/memory/ti-emif-pm.c @@ -138,6 +138,9 @@ static int ti_emif_alloc_sram(struct device *dev, emif_data->pm_functions.exit_sr = sram_resume_address(emif_data, (unsigned long)ti_emif_exit_sr); + emif_data->pm_functions.run_hw_leveling = + sram_resume_address(emif_data, + (unsigned long)ti_emif_run_hw_leveling); emif_data->pm_data.regs_virt = (struct emif_regs_amx3 *)emif_data->ti_emif_sram_data_virt; |