OMAP3 clock: introduce DPLL4 Jtype

DPLL4 for 3630 introduces a changed block called j type dpll, requiring
special divisor bits and additional reg fields. To allow for silicons to
use this, this is introduced as a flag and is enabled for 3630 silicon.
OMAP4 also has j type dpll for usb.

Tested with 3630 ZOOM3 and OMAP3430 ZOOM2

Signed-off-by: Richard Woodruff <r-woodruff2@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Vishwanath BS <Vishwanath.bs@ti.com>
[paul@pwsan.com: added some comments; updated copyrights and credits; fixed
 some style issues]
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 31 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/clock34xx_data.c b/arch/arm/mach-omap2/clock34xx_data.c
index 8bb8134872ce..60c6140b86af 100644
--- a/arch/arm/mach-omap2/clock34xx_data.c
+++ b/arch/arm/mach-omap2/clock34xx_data.c
@@ -38,6 +38,7 @@
 
 /* Maximum DPLL multiplier, divider values for OMAP3 */
 #define OMAP3_MAX_DPLL_MULT             2048
+#define OMAP3630_MAX_JTYPE_DPLL_MULT    4095
 #define OMAP3_MAX_DPLL_DIV              128
 
 /*
@@ -529,7 +530,8 @@ static struct clk emu_core_alwon_ck = {
 /* DPLL4 */
 /* Supplies 96MHz, 54Mhz TV DAC, DSS fclk, CAM sensor clock, emul trace clk */
 /* Type: DPLL */
-static struct dpll_data dpll4_dd = {
+static struct dpll_data dpll4_dd;
+static struct dpll_data dpll4_dd_34xx __initdata = {
         .mult_div1_reg  = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL2),
         .mult_mask      = OMAP3430_PERIPH_DPLL_MULT_MASK,
         .div1_mask      = OMAP3430_PERIPH_DPLL_DIV_MASK,
@@ -552,6 +554,29 @@ static struct dpll_data dpll4_dd = {
         .rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE
 };
 
+static struct dpll_data dpll4_dd_3630 __initdata = {
+        .mult_div1_reg  = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL2),
+        .mult_mask      = OMAP3630_PERIPH_DPLL_MULT_MASK,
+        .div1_mask      = OMAP3430_PERIPH_DPLL_DIV_MASK,
+        .clk_bypass     = &sys_ck,
+        .clk_ref        = &sys_ck,
+        .control_reg    = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
+        .enable_mask    = OMAP3430_EN_PERIPH_DPLL_MASK,
+        .modes          = (1 << DPLL_LOW_POWER_STOP) | (1 << DPLL_LOCKED),
+        .auto_recal_bit = OMAP3430_EN_PERIPH_DPLL_DRIFTGUARD_SHIFT,
+        .recal_en_bit   = OMAP3430_PERIPH_DPLL_RECAL_EN_SHIFT,
+        .recal_st_bit   = OMAP3430_PERIPH_DPLL_ST_SHIFT,
+        .autoidle_reg   = OMAP_CM_REGADDR(PLL_MOD, CM_AUTOIDLE),
+        .autoidle_mask  = OMAP3430_AUTO_PERIPH_DPLL_MASK,
+        .idlest_reg     = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
+        .idlest_mask    = OMAP3430_ST_PERIPH_CLK_MASK,
+        .max_multiplier = OMAP3630_MAX_JTYPE_DPLL_MULT,
+        .min_divider    = 1,
+        .max_divider    = OMAP3_MAX_DPLL_DIV,
+        .rate_tolerance = DEFAULT_DPLL_RATE_TOLERANCE,
+        .flags          = DPLL_J_TYPE
+};
+
 static struct clk dpll4_ck = {
         .name           = "dpll4_ck",
         .ops            = &omap3_clkops_noncore_dpll_ops,
@@ -3377,6 +3402,11 @@ int __init omap3xxx_clk_init(void)
                                 &clkops_omap36xx_pwrdn_with_hsdiv_wait_restore;
         }
 
+        if (cpu_is_omap3630())
+                dpll4_dd = dpll4_dd_3630;
+        else
+                dpll4_dd = dpll4_dd_34xx;
+
         clk_init(&omap2_clk_functions);
 
         for (c = omap3xxx_clks; c < omap3xxx_clks + ARRAY_SIZE(omap3xxx_clks); c++)