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>
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@@ -70,6 +70,7 @@
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* r5 = number of MPU cycles to wait for SDRC to stabilize after
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* reprogramming the SDRC when switching to a slower MPU speed
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* r6 = new SDRC_MR_0 register value
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* r7 = increasing SDRC rate? (1 = yes, 0 = no)
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*
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*/
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ENTRY(omap3_sram_configure_core_dpll)
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@@ -77,9 +78,10 @@ ENTRY(omap3_sram_configure_core_dpll)
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ldr r4, [sp, #52] @ pull extra args off the stack
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ldr r5, [sp, #56] @ load extra args from the stack
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ldr r6, [sp, #60] @ load extra args from the stack
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ldr r7, [sp, #64] @ load extra args from the stack
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dsb @ flush buffered writes to interconnect
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cmp r3, #0x2 @ if increasing SDRC clk rate,
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blne configure_sdrc @ program the SDRC regs early (for RFR)
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cmp r7, #1 @ if increasing SDRC clk rate,
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bleq configure_sdrc @ program the SDRC regs early (for RFR)
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cmp r4, #SDRC_UNLOCK_DLL @ set the intended DLL state
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bleq unlock_dll
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blne lock_dll
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@@ -89,7 +91,7 @@ ENTRY(omap3_sram_configure_core_dpll)
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cmp r4, #SDRC_UNLOCK_DLL @ wait for DLL status to change
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bleq wait_dll_unlock
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blne wait_dll_lock
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cmp r3, #0x1 @ if increasing SDRC clk rate,
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cmp r7, #1 @ if increasing SDRC clk rate,
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beq return_to_sdram @ return to SDRAM code, otherwise,
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bl configure_sdrc @ reprogram SDRC regs now
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mov r12, r5
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