ARM: OMAP3: clock: use clk_features flags for omap3 DPLL4 checks
DPLL4 can't be reprogrammed on OMAP3430 ES1.0 due to hardware limitation.
Currently, the code does runtime omap_rev() check to see the chip it is
being executed on, instead, change this to use clk_features flags.
This avoids need for runtime omap_rev() checks.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 500530d..c2b2398 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -771,4 +771,8 @@
ti_clk_features.cm_idlest_val = OMAP24XX_CM_IDLEST_VAL;
else if (cpu_is_omap34xx())
ti_clk_features.cm_idlest_val = OMAP34XX_CM_IDLEST_VAL;
+
+ /* On OMAP3430 ES1.0, DPLL4 can't be re-programmed */
+ if (omap_rev() == OMAP3430_REV_ES1_0)
+ ti_clk_features.flags |= TI_CLK_DPLL4_DENY_REPROGRAM;
}
diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h
index 4592a27..641337c 100644
--- a/arch/arm/mach-omap2/clock.h
+++ b/arch/arm/mach-omap2/clock.h
@@ -234,6 +234,7 @@
};
#define TI_CLK_DPLL_HAS_FREQSEL (1 << 0)
+#define TI_CLK_DPLL4_DENY_REPROGRAM (1 << 1)
extern struct ti_clk_features ti_clk_features;
diff --git a/arch/arm/mach-omap2/clock3xxx.c b/arch/arm/mach-omap2/clock3xxx.c
index 0b02b41..9a25601 100644
--- a/arch/arm/mach-omap2/clock3xxx.c
+++ b/arch/arm/mach-omap2/clock3xxx.c
@@ -46,7 +46,7 @@
* on 3430ES1 prevents us from changing DPLL multipliers or dividers
* on DPLL4.
*/
- if (omap_rev() == OMAP3430_REV_ES1_0) {
+ if (ti_clk_features.flags & TI_CLK_DPLL4_DENY_REPROGRAM) {
pr_err("clock: DPLL4 cannot change rate due to silicon 'Limitation 2.5' on 3430ES1.\n");
return -EINVAL;
}