]> git.karo-electronics.de Git - mv-sheeva.git/commitdiff
OMAP3 SDRC: Move the clk stabilization delay to the right place
authorRajendra Nayak <rnayak@ti.com>
Sat, 25 Jul 2009 01:44:02 +0000 (19:44 -0600)
committerpaul <paul@twilight.(none)>
Sat, 25 Jul 2009 02:10:35 +0000 (20:10 -0600)
The clock stabilization delay post a M2 divider change is needed
even before a SDRC interface clock re-enable and not only before
jumping back to SDRAM.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
arch/arm/mach-omap2/sram34xx.S

index e6b112590d7d0b65091342dcb1ef5c2492db31a7..82aa4a3d160ce917b8b85ce0959b3a5d093968ed 100644 (file)
@@ -127,6 +127,8 @@ skip_cs1_params:
        blne    lock_dll
        bl      sdram_in_selfrefresh    @ put SDRAM in self refresh, idle SDRC
        bl      configure_core_dpll     @ change the DPLL3 M2 divider
+       mov     r12, r2
+       bl      wait_clk_stable         @ wait for SDRC to stabilize
        bl      enable_sdrc             @ take SDRC out of idle
        cmp     r1, #SDRC_UNLOCK_DLL    @ wait for DLL status to change
        bleq    wait_dll_unlock
@@ -134,8 +136,6 @@ skip_cs1_params:
        cmp     r3, #1                  @ if increasing SDRC clk rate,
        beq     return_to_sdram         @ return to SDRAM code, otherwise,
        bl      configure_sdrc          @ reprogram SDRC regs now
-       mov     r12, r2
-       bl      wait_clk_stable         @ wait for SDRC to stabilize
 return_to_sdram:
        isb                             @ prevent speculative exec past here
        mov     r0, #0                  @ return value