| Message ID | 1458524230-10827-7-git-send-email-anarsoul@gmail.com |
|---|---|
| State | Accepted |
| Commit | 9ddde3e6ce8abd97d397e3915204a6981d287e42 |
| Delegated to: | Tom Rini |
| Headers | show |
On 03/21/2016 02:37 AM, Vasily Khoruzhick wrote: > SRAM is used for early stack, but kernel disables its clock on suspend. > Re-enable SRAM clock on startup, otherwise u-boot crashes on resume from suspend. > > Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> > --- > arch/arm/cpu/pxa/start.S | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S > index 24b6ad1..ce1181a 100644 > --- a/arch/arm/cpu/pxa/start.S > +++ b/arch/arm/cpu/pxa/start.S > @@ -53,7 +53,15 @@ reset: > #ifdef CONFIG_CPU_PXA25X > bl lock_cache_for_stack > #endif > - > +#ifdef CONFIG_CPU_PXA27X > + /* > + * enable clock for SRAM > + */ > + ldr r0,=CKEN > + ldr r1,[r0] > + orr r1,r1,#(1 << 20) Don't we have a macro for this 1 << 20 already ? > + str r1,[r0] > +#endif > bl _main > > /*------------------------------------------------------------------------------*/ >
On Sun, Mar 20, 2016 at 06:37:06PM -0700, Vasily Khoruzhick wrote: > SRAM is used for early stack, but kernel disables its clock on suspend. > Re-enable SRAM clock on startup, otherwise u-boot crashes on resume from suspend. > > Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Applied to u-boot/master, thanks!
diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S index 24b6ad1..ce1181a 100644 --- a/arch/arm/cpu/pxa/start.S +++ b/arch/arm/cpu/pxa/start.S @@ -53,7 +53,15 @@ reset: #ifdef CONFIG_CPU_PXA25X bl lock_cache_for_stack #endif - +#ifdef CONFIG_CPU_PXA27X + /* + * enable clock for SRAM + */ + ldr r0,=CKEN + ldr r1,[r0] + orr r1,r1,#(1 << 20) + str r1,[r0] +#endif bl _main /*------------------------------------------------------------------------------*/
SRAM is used for early stack, but kernel disables its clock on suspend. Re-enable SRAM clock on startup, otherwise u-boot crashes on resume from suspend. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> --- arch/arm/cpu/pxa/start.S | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)