omap3:clock: configure GFX clock to 200MHz for AM/DM37x

AM/DM37x is another OMAP3 variant, where the GFX clock has been
boosted to 192MHz/200MHz. So fix the GFX_DIV value for this change.

HW Errata: Due to dependency of TV out clock of 54MHz, it is not
possible to configure GFX to 192MHz. So as per HW errats, the
recommended GFX clock is 200MHz (=CORE_CLK/2).

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

arch/arm/cpu/armv7/omap3/clock.c

@@ -399,7 +399,7 @@ static void dpll3_init_36xx(u32 sil_index, u32 clk_index)
 		/* L3 */
 		sr32(&prcm_base->clksel_core, 0, 2, CORE_L3_DIV);
 		/* GFX */
-		sr32(&prcm_base->clksel_gfx,  0, 3, GFX_DIV);
+		sr32(&prcm_base->clksel_gfx,  0, 3, GFX_DIV_36X);
 		/* RESET MGR */
 		sr32(&prcm_base->clksel_wkup, 1, 2, WKUP_RSM);
 		/* FREQSEL (CORE_DPLL_FREQSEL): CM_CLKEN_PLL[4:7] */

arch/arm/include/asm/arch-omap3/clocks_omap3.h

@@ -39,6 +39,7 @@
 #define CORE_L4_DIV	2	/* 83MHz  : L4 */
 #define CORE_L3_DIV	2	/* 166MHz : L3 {DDR} */
 #define GFX_DIV		2	/* 83MHz  : CM_CLKSEL_GFX */
+#define GFX_DIV_36X	5	/* 200MHz : CM_CLKSEL_GFX */
 #define WKUP_RSM	2	/* 41.5MHz: CM_CLKSEL_WKUP */
 
 /* PER DPLL */