Most DPLLs use sys_clk as their bypass rate source. But DPLL1 and DPLL2
use high-frequency bypass clocks dpll1_fclk and dpll2_fclk as their parents
during bypass. Add a new struct dpll_data field to track the DPLL's bypass
source clock.
Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> helped catch this - thanks Kevin.
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-omap2/clock34xx.h | 9 +++++++++
arch/arm/plat-omap/include/mach/clock.h | 1 +
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/clock34xx.h b/arch/arm/mach-omap2/clock34xx.h
index 19c3881..cc4960d 100644
--- a/arch/arm/mach-omap2/clock34xx.h
+++ b/arch/arm/mach-omap2/clock34xx.h
@@ -49,6 +49,10 @@ static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate);
* DPLL5 supplies other peripheral clocks (USBHOST, USIM).
*/
+/* Forward declarations for DPLL bypass clocks */
+static struct clk dpll1_fck;
+static struct clk dpll2_fck;
+
/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
#define DPLL_LOW_POWER_STOP 0x1
#define DPLL_LOW_POWER_BYPASS 0x5
@@ -311,6 +315,7 @@ static struct dpll_data dpll1_dd = {
.autoidle_mask = OMAP3430_AUTO_MPU_DPLL_MASK,
.idlest_reg = _OMAP34XX_CM_REGADDR(MPU_MOD, OMAP3430_CM_IDLEST_PLL),
.idlest_mask = OMAP3430_ST_MPU_CLK_MASK,
+ .bypass_clk = &dpll1_fck,
.max_multiplier = OMAP3_MAX_DPLL_MULT,
.max_divider = OMAP3_MAX_DPLL_DIV,
.rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE
@@ -383,6 +388,7 @@ static struct dpll_data dpll2_dd = {
.autoidle_mask = OMAP3430_AUTO_IVA2_DPLL_MASK,
.idlest_reg = _OMAP34XX_CM_REGADDR(OMAP3430_IVA2_MOD, OMAP3430_CM_IDLEST_PLL),
.idlest_mask = OMAP3430_ST_IVA2_CLK_MASK,
+ .bypass_clk = &dpll2_fck,
.max_multiplier = OMAP3_MAX_DPLL_MULT,
.max_divider = OMAP3_MAX_DPLL_DIV,
.rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE
@@ -443,6 +449,7 @@ static struct dpll_data dpll3_dd = {
.autoidle_mask = OMAP3430_AUTO_CORE_DPLL_MASK,
.idlest_reg = _OMAP34XX_CM_REGADDR(PLL_MOD, CM_IDLEST),
.idlest_mask = OMAP3430_ST_CORE_CLK_MASK,
+ .bypass_clk = &sys_ck,
.max_multiplier = OMAP3_MAX_DPLL_MULT,
.max_divider = OMAP3_MAX_DPLL_DIV,
.rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE
@@ -631,6 +638,7 @@ static struct dpll_data dpll4_dd = {
.autoidle_mask = OMAP3430_AUTO_PERIPH_DPLL_MASK,
.idlest_reg = _OMAP34XX_CM_REGADDR(PLL_MOD, CM_IDLEST),
.idlest_mask = OMAP3430_ST_PERIPH_CLK_MASK,
+ .bypass_clk = &sys_ck,
.max_multiplier = OMAP3_MAX_DPLL_MULT,
.max_divider = OMAP3_MAX_DPLL_DIV,
.rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE
@@ -971,6 +979,7 @@ static struct dpll_data dpll5_dd = {
.autoidle_mask = OMAP3430ES2_AUTO_PERIPH2_DPLL_MASK,
.idlest_reg = _OMAP34XX_CM_REGADDR(PLL_MOD, CM_IDLEST2),
.idlest_mask = OMAP3430ES2_ST_PERIPH2_CLK_MASK,
+ .bypass_clk = &sys_ck,
.max_multiplier = OMAP3_MAX_DPLL_MULT,
.max_divider = OMAP3_MAX_DPLL_DIV,
.rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE
diff --git a/arch/arm/plat-omap/include/mach/clock.h b/arch/arm/plat-omap/include/mach/clock.h
index 666f52b..0fb4271 100644
--- a/arch/arm/plat-omap/include/mach/clock.h
+++ b/arch/arm/plat-omap/include/mach/clock.h
@@ -43,6 +43,7 @@ struct dpll_data {
u32 max_tolerance;
void __iomem *idlest_reg;
u32 idlest_mask;
+ struct clk *bypass_clk;
# if defined(CONFIG_ARCH_OMAP3)
u32 freqsel_mask;
u8 modes;
--
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