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| author |   Dave Gerlach <d-gerlach@ti.com> | 2019-04-02 11:57:42 -0500 |
|---|---|---|
| committer |   Tony Lindgren <tony@atomide.com> | 2019-04-09 08:31:51 -0700 |
| commit | 6c110561eb2d4d1496961c13a92f96f29eea7c72 (patch) | |
| tree | 8c1237a3dbc0f2bafb8df589b2f9c1dbf8c04a69 /include/linux/ti-emif-sram.h | |
| parent | Linux 5.1-rc1 (diff) | |
| download | linux-dev-6c110561eb2d4d1496961c13a92f96f29eea7c72.tar.xz linux-dev-6c110561eb2d4d1496961c13a92f96f29eea7c72.zip | |
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 'include/linux/ti-emif-sram.h')
| -rw-r--r-- | include/linux/ti-emif-sram.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ti-emif-sram.h b/include/linux/ti-emif-sram.h index 53604b087f2c..2fc854155c27 100644 --- a/include/linux/ti-emif-sram.h +++ b/include/linux/ti-emif-sram.h @@ -55,6 +55,7 @@ struct ti_emif_pm_data { struct ti_emif_pm_functions { u32 save_context; u32 restore_context; + u32 run_hw_leveling; u32 enter_sr; u32 exit_sr; u32 abort_sr; @@ -126,6 +127,8 @@ static inline void ti_emif_asm_offsets(void) offsetof(struct ti_emif_pm_functions, save_context)); DEFINE(EMIF_PM_RESTORE_CONTEXT_OFFSET, offsetof(struct ti_emif_pm_functions, restore_context)); + DEFINE(EMIF_PM_RUN_HW_LEVELING, + offsetof(struct ti_emif_pm_functions, run_hw_leveling)); DEFINE(EMIF_PM_ENTER_SR_OFFSET, offsetof(struct ti_emif_pm_functions, enter_sr)); DEFINE(EMIF_PM_EXIT_SR_OFFSET, |