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| author | Tero Kristo <tero.kristo@nokia.com> | 2009-06-20 03:08:29 +0200 |
|---|---|---|
| committer | paul <paul@twilight.(none)> | 2009-06-20 03:09:32 +0200 |
| commit | 3afec6332e1e7cf2d74e0bf08160a68f43a59073 (patch) | |
| tree | b0b6d4b12d54cb5079975a3a58583c98f892f708 /arch/arm/mach-omap2/sram34xx.S | |
| parent | OMAP3 SRAM: convert SRAM code to use macros rather than magic numbers (diff) | |
| download | linux-3afec6332e1e7cf2d74e0bf08160a68f43a59073.tar.xz linux-3afec6332e1e7cf2d74e0bf08160a68f43a59073.zip | |
OMAP3: Add support for DPLL3 divisor values higher than 2
Previously only 1 and 2 was supported. This is needed for DVFS VDD2 control.
Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Diffstat (limited to 'arch/arm/mach-omap2/sram34xx.S')
| -rw-r--r-- | arch/arm/mach-omap2/sram34xx.S | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/sram34xx.S b/arch/arm/mach-omap2/sram34xx.S index 16eb4efa8b74..487fa8609cde 100644 --- a/arch/arm/mach-omap2/sram34xx.S +++ b/arch/arm/mach-omap2/sram34xx.S @@ -70,6 +70,7 @@ * r5 = number of MPU cycles to wait for SDRC to stabilize after * reprogramming the SDRC when switching to a slower MPU speed * r6 = new SDRC_MR_0 register value + * r7 = increasing SDRC rate? (1 = yes, 0 = no) * */ ENTRY(omap3_sram_configure_core_dpll) @@ -77,9 +78,10 @@ ENTRY(omap3_sram_configure_core_dpll) ldr r4, [sp, #52] @ pull extra args off the stack ldr r5, [sp, #56] @ load extra args from the stack ldr r6, [sp, #60] @ load extra args from the stack + ldr r7, [sp, #64] @ load extra args from the stack dsb @ flush buffered writes to interconnect - cmp r3, #0x2 @ if increasing SDRC clk rate, - blne configure_sdrc @ program the SDRC regs early (for RFR) + cmp r7, #1 @ if increasing SDRC clk rate, + bleq configure_sdrc @ program the SDRC regs early (for RFR) cmp r4, #SDRC_UNLOCK_DLL @ set the intended DLL state bleq unlock_dll blne lock_dll @@ -89,7 +91,7 @@ ENTRY(omap3_sram_configure_core_dpll) cmp r4, #SDRC_UNLOCK_DLL @ wait for DLL status to change bleq wait_dll_unlock blne wait_dll_lock - cmp r3, #0x1 @ if increasing SDRC clk rate, + cmp r7, #1 @ if increasing SDRC clk rate, beq return_to_sdram @ return to SDRAM code, otherwise, bl configure_sdrc @ reprogram SDRC regs now mov r12, r5 |