Hi,
Just an initial comment to this patch, this is somewhat experimental and
I think we should agree what registers will actually be saved here and
what should be left for drivers. CM_CLKSEL4 is for DPLL5 which is used
by USB. Two of the CLKEN registers are more interesting.
-Tero
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of ext Tero Kristo
Sent: 19 November, 2008 11:32
To: linux-omap@vger.kernel.org
Subject: [PATCH] PM: Added three PLL registers to the PRCM context save
These registers are now also saved:
CM_CLKSEL4
CM_CLKEN
CM_CLKEN2
Signed-off-by: Tero Kristo [EMAIL PROTECTED]
---
arch/arm/mach-omap2/prcm.c | 14 ++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/prcm.c
b/arch/arm/mach-omap2/prcm.c index d5a1e4b..c64b668 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -46,7 +46,10 @@ struct omap3_prcm_regs {
u32 emu_cm_clksel;
u32 emu_cm_clkstctrl;
u32 pll_cm_autoidle2;
+ u32 pll_cm_clksel4;
u32 pll_cm_clksel5;
+ u32 pll_cm_clken;
+ u32 pll_cm_clken2;
u32 cm_polctrl;
u32 iva2_cm_fclken;
u32 core_cm_fclken1;
@@ -233,8 +236,14 @@ void omap3_prcm_save_context(void)
cm_read_mod_reg(OMAP3430_EMU_MOD,
CM_CLKSTCTRL);
prcm_context.pll_cm_autoidle2 =
cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE2);
+ prcm_context.pll_cm_clksel4 =
+ cm_read_mod_reg(PLL_MOD,
OMAP3430ES2_CM_CLKSEL4);
prcm_context.pll_cm_clksel5 =
cm_read_mod_reg(PLL_MOD,
OMAP3430ES2_CM_CLKSEL5);
+ prcm_context.pll_cm_clken =
+ cm_read_mod_reg(PLL_MOD, CM_CLKEN);
+ prcm_context.pll_cm_clken2 =
+ cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKEN2);
prcm_context.cm_polctrl = __raw_readl(OMAP3430_CM_POLCTRL);
prcm_context.iva2_cm_fclken =
cm_read_mod_reg(OMAP3430_IVA2_MOD,
CM_FCLKEN); @@ -380,8 +389,13 @@ void omap3_prcm_restore_context(void)
CM_CLKSTCTRL);
cm_write_mod_reg(prcm_context.pll_cm_autoidle2, PLL_MOD,
CM_AUTOIDLE2);
+ cm_write_mod_reg(prcm_context.pll_cm_clksel4, PLL_MOD,
+ OMAP3430ES2_CM_CLKSEL4);
cm_write_mod_reg(prcm_context.pll_cm_clksel5, PLL_MOD,
OMAP3430ES2_CM_CLKSEL5);
+ cm_write_mod_reg(prcm_context.pll_cm_clken, PLL_MOD, CM_CLKEN);
+ cm_write_mod_reg(prcm_context.pll_cm_clken2, PLL_MOD,
+ OMAP3430ES2_CM_CLKEN2);
__raw_writel(prcm_context.cm_polctrl, OMAP3430_CM_POLCTRL);
cm_write_mod_reg(prcm_context.iva2_cm_fclken, OMAP3430_IVA2_MOD,
CM_FCLKEN);
--
1.5.4.3
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