diff options
| -rw-r--r-- | arch/arm/mach-omap2/clkt_dpll.c | 28 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/control.c | 6 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/dpll3xxx.c | 13 |
3 files changed, 35 insertions, 12 deletions
diff --git a/arch/arm/mach-omap2/clkt_dpll.c b/arch/arm/mach-omap2/clkt_dpll.c index b2ff6cd7ca9f..f251a14cbf16 100644 --- a/arch/arm/mach-omap2/clkt_dpll.c +++ b/arch/arm/mach-omap2/clkt_dpll.c @@ -285,10 +285,13 @@ long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate, { struct clk_hw_omap *clk = to_clk_hw_omap(hw); int m, n, r, scaled_max_m; + int min_delta_m = INT_MAX, min_delta_n = INT_MAX; unsigned long scaled_rt_rp; unsigned long new_rate = 0; struct dpll_data *dd; unsigned long ref_rate; + long delta; + long prev_min_delta = LONG_MAX; const char *clk_name; if (!clk || !clk->dpll_data) @@ -334,23 +337,34 @@ long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate, if (r == DPLL_MULT_UNDERFLOW) continue; + /* skip rates above our target rate */ + delta = target_rate - new_rate; + if (delta < 0) + continue; + + if (delta < prev_min_delta) { + prev_min_delta = delta; + min_delta_m = m; + min_delta_n = n; + } + pr_debug("clock: %s: m = %d: n = %d: new_rate = %lu\n", clk_name, m, n, new_rate); - if (target_rate == new_rate) { - dd->last_rounded_m = m; - dd->last_rounded_n = n; - dd->last_rounded_rate = target_rate; + if (delta == 0) break; - } } - if (target_rate != new_rate) { + if (prev_min_delta == LONG_MAX) { pr_debug("clock: %s: cannot round to rate %lu\n", clk_name, target_rate); return ~0; } - return target_rate; + dd->last_rounded_m = min_delta_m; + dd->last_rounded_n = min_delta_n; + dd->last_rounded_rate = target_rate - prev_min_delta; + + return dd->last_rounded_rate; } diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c index f4796c002070..da041b4ab29c 100644 --- a/arch/arm/mach-omap2/control.c +++ b/arch/arm/mach-omap2/control.c @@ -280,6 +280,7 @@ void omap3_clear_scratchpad_contents(void) u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET; void __iomem *v_addr; u32 offset = 0; + v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM); if (omap3xxx_prm_clear_global_cold_reset()) { for ( ; offset <= max_offset; offset += 0x4) @@ -309,7 +310,8 @@ void omap3_save_scratchpad_contents(void) scratchpad_contents.public_restore_ptr = virt_to_phys(omap3_restore_3630); else if (omap_rev() != OMAP3430_REV_ES3_0 && - omap_rev() != OMAP3430_REV_ES3_1) + omap_rev() != OMAP3430_REV_ES3_1 && + omap_rev() != OMAP3430_REV_ES3_1_2) scratchpad_contents.public_restore_ptr = virt_to_phys(omap3_restore); else @@ -463,7 +465,6 @@ void omap3_control_save_context(void) control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI); control_context.padconf_sys_nirq = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_SYSNIRQ); - return; } void omap3_control_restore_context(void) @@ -521,7 +522,6 @@ void omap3_control_restore_context(void) omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI); omap_ctrl_writel(control_context.padconf_sys_nirq, OMAP343X_CONTROL_PADCONF_SYSNIRQ); - return; } void omap3630_ctrl_disable_rta(void) diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c index cd5f3a0b97bd..ac3d789ac3cd 100644 --- a/arch/arm/mach-omap2/dpll3xxx.c +++ b/arch/arm/mach-omap2/dpll3xxx.c @@ -475,6 +475,7 @@ int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate, { struct clk_hw_omap *clk = to_clk_hw_omap(hw); struct clk *new_parent = NULL; + unsigned long rrate; u16 freqsel = 0; struct dpll_data *dd; int ret; @@ -502,8 +503,16 @@ int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate, __clk_prepare(dd->clk_ref); clk_enable(dd->clk_ref); - if (dd->last_rounded_rate != rate) - rate = __clk_round_rate(hw->clk, rate); + /* XXX this check is probably pointless in the CCF context */ + if (dd->last_rounded_rate != rate) { + rrate = __clk_round_rate(hw->clk, rate); + if (rrate != rate) { + pr_warn("%s: %s: final rate %lu does not match desired rate %lu\n", + __func__, __clk_get_name(hw->clk), + rrate, rate); + rate = rrate; + } + } if (dd->last_rounded_rate == 0) return -EINVAL; |