ARM: OMAP: replace custom sr32() by standard I/O accessors

Replace the custom bit manipulation function sr32() by standard I/O
accessors.  A major motivation for this cleanup was the fact, that a
number of calls of that function resulted in 32 bit wide shift
operations on u32 data, which according to the C-ISO/IEC-9899-Standard
provokes undefined behaviour:

	6.5.7 Bitwise shift operators
	...
        If the value of the right operand is negative or is greater
        than or equal to the width of the promoted left operand, the
        behavior is undefined.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Tom Rini <trini@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>

1 files changed, 205 insertions, 163 deletions

diff --git a/arch/arm/cpu/armv7/omap3/clock.c b/arch/arm/cpu/armv7/omap3/clock.c
index 16e6c5f..529ad9a 100644
--- a/arch/arm/cpu/armv7/omap3/clock.c
+++ b/arch/arm/cpu/armv7/omap3/clock.c
@@ -21,19 +21,6 @@
 #include <environment.h>
 #include <command.h>
 
-/*
- * sr32 - clear & set a value in a bit range for a 32 bit address
- */
-static inline void sr32(void *addr, u32 start_bit, u32 num_bits, u32 value)
-{
-	u32 tmp, msk = 0;
-	msk = 1 << num_bits;
-	--msk;
-	tmp = readl((u32)addr) & ~(msk << start_bit);
-	tmp |= value << start_bit;
-	writel(tmp, (u32)addr);
-}
-
 /******************************************************************************
  * get_sys_clk_speed() - determine reference oscillator speed
  *                       based on known 32kHz clock and gptimer.
@@ -145,9 +132,9 @@ static void dpll3_init_34xx(u32 sil_index, u32 clk_index)
 	if (xip_safe) {
 		/*
 		 * CORE DPLL
-		 * sr32(CM_CLKSEL2_EMU) set override to work when asleep
 		 */
-		sr32(&prcm_base->clken_pll, 0, 3, PLL_FAST_RELOCK_BYPASS);
+		clrsetbits_le32(&prcm_base->clken_pll,
+				0x00000007, PLL_FAST_RELOCK_BYPASS);
 		wait_on_value(ST_CORE_CLK, 0, &prcm_base->idlest_ckgen,
 				LDELAY);
 
@@ -157,37 +144,50 @@ static void dpll3_init_34xx(u32 sil_index, u32 clk_index)
 		 */
 
 		/* CM_CLKSEL1_EMU[DIV_DPLL3] */
-		sr32(&prcm_base->clksel1_emu, 16, 5, (CORE_M3X2 + 1)) ;
-		sr32(&prcm_base->clksel1_emu, 16, 5, CORE_M3X2);
+		clrsetbits_le32(&prcm_base->clksel1_emu,
+				0x001F0000, (CORE_M3X2 + 1) << 16) ;
+		clrsetbits_le32(&prcm_base->clksel1_emu,
+				0x001F0000, CORE_M3X2 << 16);
 
 		/* M2 (CORE_DPLL_CLKOUT_DIV): CM_CLKSEL1_PLL[27:31] */
-		sr32(&prcm_base->clksel1_pll, 27, 5, ptr->m2);
+		clrsetbits_le32(&prcm_base->clksel1_pll,
+				0xF8000000, ptr->m2 << 27);
 
 		/* M (CORE_DPLL_MULT): CM_CLKSEL1_PLL[16:26] */
-		sr32(&prcm_base->clksel1_pll, 16, 11, ptr->m);
+		clrsetbits_le32(&prcm_base->clksel1_pll,
+				0x07FF0000, ptr->m << 16);
 
 		/* N (CORE_DPLL_DIV): CM_CLKSEL1_PLL[8:14] */
-		sr32(&prcm_base->clksel1_pll, 8, 7, ptr->n);
+		clrsetbits_le32(&prcm_base->clksel1_pll,
+				0x00007F00, ptr->n << 8);
 
 		/* Source is the CM_96M_FCLK: CM_CLKSEL1_PLL[6] */
-		sr32(&prcm_base->clksel1_pll, 6, 1, 0);
+		clrbits_le32(&prcm_base->clksel1_pll, 0x00000040);
 
 		/* SSI */
-		sr32(&prcm_base->clksel_core, 8, 4, CORE_SSI_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x00000F00, CORE_SSI_DIV << 8);
 		/* FSUSB */
-		sr32(&prcm_base->clksel_core, 4, 2, CORE_FUSB_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x00000030, CORE_FUSB_DIV << 4);
 		/* L4 */
-		sr32(&prcm_base->clksel_core, 2, 2, CORE_L4_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x0000000C, CORE_L4_DIV << 2);
 		/* L3 */
-		sr32(&prcm_base->clksel_core, 0, 2, CORE_L3_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x00000003, CORE_L3_DIV);
 		/* GFX */
-		sr32(&prcm_base->clksel_gfx,  0, 3, GFX_DIV);
+		clrsetbits_le32(&prcm_base->clksel_gfx,
+				0x00000007, GFX_DIV);
 		/* RESET MGR */
-		sr32(&prcm_base->clksel_wkup, 1, 2, WKUP_RSM);
+		clrsetbits_le32(&prcm_base->clksel_wkup,
+				0x00000006, WKUP_RSM << 1);
 		/* FREQSEL (CORE_DPLL_FREQSEL): CM_CLKEN_PLL[4:7] */
-		sr32(&prcm_base->clken_pll,   4, 4, ptr->fsel);
+		clrsetbits_le32(&prcm_base->clken_pll,
+				0x000000F0, ptr->fsel << 4);
 		/* LOCK MODE */
-		sr32(&prcm_base->clken_pll,   0, 3, PLL_LOCK);
+		clrsetbits_le32(&prcm_base->clken_pll,
+				0x00000007, PLL_LOCK);
 
 		wait_on_value(ST_CORE_CLK, 1, &prcm_base->idlest_ckgen,
 				LDELAY);
@@ -199,29 +199,29 @@ static void dpll3_init_34xx(u32 sil_index, u32 clk_index)
 		f_lock_pll = (void *) (SRAM_CLK_CODE);
 
 		p0 = readl(&prcm_base->clken_pll);
-		sr32(&p0, 0, 3, PLL_FAST_RELOCK_BYPASS);
+		clrsetbits_le32(&p0, 0x00000007, PLL_FAST_RELOCK_BYPASS);
 		/* FREQSEL (CORE_DPLL_FREQSEL): CM_CLKEN_PLL[4:7] */
-		sr32(&p0, 4, 4, ptr->fsel);
+		clrsetbits_le32(&p0, 0x000000F0, ptr->fsel << 4);
 
 		p1 = readl(&prcm_base->clksel1_pll);
 		/* M2 (CORE_DPLL_CLKOUT_DIV): CM_CLKSEL1_PLL[27:31] */
-		sr32(&p1, 27, 5, ptr->m2);
+		clrsetbits_le32(&p1, 0xF8000000, ptr->m2 << 27);
 		/* M (CORE_DPLL_MULT): CM_CLKSEL1_PLL[16:26] */
-		sr32(&p1, 16, 11, ptr->m);
+		clrsetbits_le32(&p1, 0x07FF0000, ptr->m << 16);
 		/* N (CORE_DPLL_DIV): CM_CLKSEL1_PLL[8:14] */
-		sr32(&p1, 8, 7, ptr->n);
+		clrsetbits_le32(&p1, 0x00007F00, ptr->n << 8);
 		/* Source is the CM_96M_FCLK: CM_CLKSEL1_PLL[6] */
-		sr32(&p1, 6, 1, 0);
+		clrbits_le32(&p1, 0x00000040);
 
 		p2 = readl(&prcm_base->clksel_core);
 		/* SSI */
-		sr32(&p2, 8, 4, CORE_SSI_DIV);
+		clrsetbits_le32(&p2, 0x00000F00, CORE_SSI_DIV << 8);
 		/* FSUSB */
-		sr32(&p2, 4, 2, CORE_FUSB_DIV);
+		clrsetbits_le32(&p2, 0x00000030, CORE_FUSB_DIV << 4);
 		/* L4 */
-		sr32(&p2, 2, 2, CORE_L4_DIV);
+		clrsetbits_le32(&p2, 0x0000000C, CORE_L4_DIV << 2);
 		/* L3 */
-		sr32(&p2, 0, 2, CORE_L3_DIV);
+		clrsetbits_le32(&p2, 0x00000003, CORE_L3_DIV);
 
 		p3 = (u32)&prcm_base->idlest_ckgen;
 
@@ -238,7 +238,7 @@ static void dpll4_init_34xx(u32 sil_index, u32 clk_index)
 	ptr = ptr + clk_index;
 
 	/* EN_PERIPH_DPLL: CM_CLKEN_PLL[16:18] */
-	sr32(&prcm_base->clken_pll, 16, 3, PLL_STOP);
+	clrsetbits_le32(&prcm_base->clken_pll, 0x00070000, PLL_STOP << 16);
 	wait_on_value(ST_PERIPH_CLK, 0, &prcm_base->idlest_ckgen, LDELAY);
 
 	/*
@@ -247,33 +247,38 @@ static void dpll4_init_34xx(u32 sil_index, u32 clk_index)
 	 * and then the actual divisor value
 	 */
 	/* M6 */
-	sr32(&prcm_base->clksel1_emu, 24, 5, (PER_M6X2 + 1));
-	sr32(&prcm_base->clksel1_emu, 24, 5, PER_M6X2);
+	clrsetbits_le32(&prcm_base->clksel1_emu,
+			0x1F000000, (PER_M6X2 + 1) << 24);
+	clrsetbits_le32(&prcm_base->clksel1_emu,
+			0x1F000000, PER_M6X2 << 24);
 	/* M5 */
-	sr32(&prcm_base->clksel_cam, 0, 5, (PER_M5X2 + 1));
-	sr32(&prcm_base->clksel_cam, 0, 5, PER_M5X2);
+	clrsetbits_le32(&prcm_base->clksel_cam, 0x0000001F, (PER_M5X2 + 1));
+	clrsetbits_le32(&prcm_base->clksel_cam, 0x0000001F, PER_M5X2);
 	/* M4 */
-	sr32(&prcm_base->clksel_dss, 0, 5, (PER_M4X2 + 1));
-	sr32(&prcm_base->clksel_dss, 0, 5, PER_M4X2);
+	clrsetbits_le32(&prcm_base->clksel_dss, 0x0000001F, (PER_M4X2 + 1));
+	clrsetbits_le32(&prcm_base->clksel_dss, 0x0000001F, PER_M4X2);
 	/* M3 */
-	sr32(&prcm_base->clksel_dss, 8, 5, (PER_M3X2 + 1));
-	sr32(&prcm_base->clksel_dss, 8, 5, PER_M3X2);
+	clrsetbits_le32(&prcm_base->clksel_dss,
+			0x00001F00, (PER_M3X2 + 1) << 8);
+	clrsetbits_le32(&prcm_base->clksel_dss,
+			0x00001F00, PER_M3X2 << 8);
 	/* M2 (DIV_96M): CM_CLKSEL3_PLL[0:4] */
-	sr32(&prcm_base->clksel3_pll, 0, 5, (ptr->m2 + 1));
-	sr32(&prcm_base->clksel3_pll, 0, 5, ptr->m2);
+	clrsetbits_le32(&prcm_base->clksel3_pll, 0x0000001F, (ptr->m2 + 1));
+	clrsetbits_le32(&prcm_base->clksel3_pll, 0x0000001F, ptr->m2);
 	/* Workaround end */
 
 	/* M (PERIPH_DPLL_MULT): CM_CLKSEL2_PLL[8:18] */
-	sr32(&prcm_base->clksel2_pll, 8, 11, ptr->m);
+	clrsetbits_le32(&prcm_base->clksel2_pll,
+			0x0007FF00, ptr->m << 8);
 
 	/* N (PERIPH_DPLL_DIV): CM_CLKSEL2_PLL[0:6] */
-	sr32(&prcm_base->clksel2_pll, 0, 7, ptr->n);
+	clrsetbits_le32(&prcm_base->clksel2_pll, 0x0000007F, ptr->n);
 
 	/* FREQSEL (PERIPH_DPLL_FREQSEL): CM_CLKEN_PLL[20:23] */
-	sr32(&prcm_base->clken_pll, 20, 4, ptr->fsel);
+	clrsetbits_le32(&prcm_base->clken_pll, 0x00F00000, ptr->fsel << 20);
 
 	/* LOCK MODE (EN_PERIPH_DPLL): CM_CLKEN_PLL[16:18] */
-	sr32(&prcm_base->clken_pll, 16, 3, PLL_LOCK);
+	clrsetbits_le32(&prcm_base->clken_pll, 0x00070000, PLL_LOCK << 16);
 	wait_on_value(ST_PERIPH_CLK, 2, &prcm_base->idlest_ckgen, LDELAY);
 }
 
@@ -286,13 +291,18 @@ static void dpll5_init_34xx(u32 sil_index, u32 clk_index)
 	ptr = ptr + clk_index;
 
 	/* PER2 DPLL (DPLL5) */
-	sr32(&prcm_base->clken2_pll, 0, 3, PLL_STOP);
+	clrsetbits_le32(&prcm_base->clken2_pll, 0x00000007, PLL_STOP);
 	wait_on_value(1, 0, &prcm_base->idlest2_ckgen, LDELAY);
-	sr32(&prcm_base->clksel5_pll, 0, 5, ptr->m2); /* set M2 (usbtll_fck) */
-	sr32(&prcm_base->clksel4_pll, 8, 11, ptr->m); /* set m (11-bit multiplier) */
-	sr32(&prcm_base->clksel4_pll, 0, 7, ptr->n); /* set n (7-bit divider)*/
-	sr32(&prcm_base->clken_pll, 4, 4, ptr->fsel);   /* FREQSEL */
-	sr32(&prcm_base->clken2_pll, 0, 3, PLL_LOCK);   /* lock mode */
+	/* set M2 (usbtll_fck) */
+	clrsetbits_le32(&prcm_base->clksel5_pll, 0x0000001F, ptr->m2);
+	/* set m (11-bit multiplier) */
+	clrsetbits_le32(&prcm_base->clksel4_pll, 0x0007FF00, ptr->m << 8);
+	/* set n (7-bit divider)*/
+	clrsetbits_le32(&prcm_base->clksel4_pll, 0x0000007F, ptr->n);
+	/* FREQSEL */
+	clrsetbits_le32(&prcm_base->clken_pll, 0x000000F0, ptr->fsel << 4);
+	/* lock mode */
+	clrsetbits_le32(&prcm_base->clken2_pll, 0x00000007, PLL_LOCK);
 	wait_on_value(1, 1, &prcm_base->idlest2_ckgen, LDELAY);
 }
 
@@ -307,16 +317,20 @@ static void mpu_init_34xx(u32 sil_index, u32 clk_index)
 	/* MPU DPLL (unlocked already) */
 
 	/* M2 (MPU_DPLL_CLKOUT_DIV) : CM_CLKSEL2_PLL_MPU[0:4] */
-	sr32(&prcm_base->clksel2_pll_mpu, 0, 5, ptr->m2);
+	clrsetbits_le32(&prcm_base->clksel2_pll_mpu,
+			0x0000001F, ptr->m2);
 
 	/* M (MPU_DPLL_MULT) : CM_CLKSEL2_PLL_MPU[8:18] */
-	sr32(&prcm_base->clksel1_pll_mpu, 8, 11, ptr->m);
+	clrsetbits_le32(&prcm_base->clksel1_pll_mpu,
+			0x0007FF00, ptr->m << 8);
 
 	/* N (MPU_DPLL_DIV) : CM_CLKSEL2_PLL_MPU[0:6] */
-	sr32(&prcm_base->clksel1_pll_mpu, 0, 7, ptr->n);
+	clrsetbits_le32(&prcm_base->clksel1_pll_mpu,
+			0x0000007F, ptr->n);
 
 	/* FREQSEL (MPU_DPLL_FREQSEL) : CM_CLKEN_PLL_MPU[4:7] */
-	sr32(&prcm_base->clken_pll_mpu, 4, 4, ptr->fsel);
+	clrsetbits_le32(&prcm_base->clken_pll_mpu,
+			0x000000F0, ptr->fsel << 4);
 }
 
 static void iva_init_34xx(u32 sil_index, u32 clk_index)
@@ -329,23 +343,29 @@ static void iva_init_34xx(u32 sil_index, u32 clk_index)
 
 	/* IVA DPLL */
 	/* EN_IVA2_DPLL : CM_CLKEN_PLL_IVA2[0:2] */
-	sr32(&prcm_base->clken_pll_iva2, 0, 3, PLL_STOP);
+	clrsetbits_le32(&prcm_base->clken_pll_iva2,
+			0x00000007, PLL_STOP);
 	wait_on_value(ST_IVA2_CLK, 0, &prcm_base->idlest_pll_iva2, LDELAY);
 
 	/* M2 (IVA2_DPLL_CLKOUT_DIV) : CM_CLKSEL2_PLL_IVA2[0:4] */
-	sr32(&prcm_base->clksel2_pll_iva2, 0, 5, ptr->m2);
+	clrsetbits_le32(&prcm_base->clksel2_pll_iva2,
+			0x0000001F, ptr->m2);
 
 	/* M (IVA2_DPLL_MULT) : CM_CLKSEL1_PLL_IVA2[8:18] */
-	sr32(&prcm_base->clksel1_pll_iva2, 8, 11, ptr->m);
+	clrsetbits_le32(&prcm_base->clksel1_pll_iva2,
+			0x0007FF00, ptr->m << 8);
 
 	/* N (IVA2_DPLL_DIV) : CM_CLKSEL1_PLL_IVA2[0:6] */
-	sr32(&prcm_base->clksel1_pll_iva2, 0, 7, ptr->n);
+	clrsetbits_le32(&prcm_base->clksel1_pll_iva2,
+			0x0000007F, ptr->n);
 
 	/* FREQSEL (IVA2_DPLL_FREQSEL) : CM_CLKEN_PLL_IVA2[4:7] */
-	sr32(&prcm_base->clken_pll_iva2, 4, 4, ptr->fsel);
+	clrsetbits_le32(&prcm_base->clken_pll_iva2,
+			0x000000F0, ptr->fsel << 4);
 
 	/* LOCK MODE (EN_IVA2_DPLL) : CM_CLKEN_PLL_IVA2[0:2] */
-	sr32(&prcm_base->clken_pll_iva2, 0, 3, PLL_LOCK);
+	clrsetbits_le32(&prcm_base->clken_pll_iva2,
+			0x00000007, PLL_LOCK);
 
 	wait_on_value(ST_IVA2_CLK, 1, &prcm_base->idlest_pll_iva2, LDELAY);
 }
@@ -370,41 +390,54 @@ static void dpll3_init_36xx(u32 sil_index, u32 clk_index)
 		/* CORE DPLL */
 
 		/* Select relock bypass: CM_CLKEN_PLL[0:2] */
-		sr32(&prcm_base->clken_pll, 0, 3, PLL_FAST_RELOCK_BYPASS);
+		clrsetbits_le32(&prcm_base->clken_pll,
+				0x00000007, PLL_FAST_RELOCK_BYPASS);
 		wait_on_value(ST_CORE_CLK, 0, &prcm_base->idlest_ckgen,
 				LDELAY);
 
 		/* CM_CLKSEL1_EMU[DIV_DPLL3] */
-		sr32(&prcm_base->clksel1_emu, 16, 5, CORE_M3X2);
+		clrsetbits_le32(&prcm_base->clksel1_emu,
+				0x001F0000, CORE_M3X2 << 16);
 
 		/* M2 (CORE_DPLL_CLKOUT_DIV): CM_CLKSEL1_PLL[27:31] */
-		sr32(&prcm_base->clksel1_pll, 27, 5, ptr->m2);
+		clrsetbits_le32(&prcm_base->clksel1_pll,
+				0xF8000000, ptr->m2 << 27);
 
 		/* M (CORE_DPLL_MULT): CM_CLKSEL1_PLL[16:26] */
-		sr32(&prcm_base->clksel1_pll, 16, 11, ptr->m);
+		clrsetbits_le32(&prcm_base->clksel1_pll,
+				0x07FF0000, ptr->m << 16);
 
 		/* N (CORE_DPLL_DIV): CM_CLKSEL1_PLL[8:14] */
-		sr32(&prcm_base->clksel1_pll, 8, 7, ptr->n);
+		clrsetbits_le32(&prcm_base->clksel1_pll,
+				0x00007F00, ptr->n << 8);
 
 		/* Source is the CM_96M_FCLK: CM_CLKSEL1_PLL[6] */
-		sr32(&prcm_base->clksel1_pll, 6, 1, 0);
+		clrbits_le32(&prcm_base->clksel1_pll, 0x00000040);
 
 		/* SSI */
-		sr32(&prcm_base->clksel_core, 8, 4, CORE_SSI_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x00000F00, CORE_SSI_DIV << 8);
 		/* FSUSB */
-		sr32(&prcm_base->clksel_core, 4, 2, CORE_FUSB_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x00000030, CORE_FUSB_DIV << 4);
 		/* L4 */
-		sr32(&prcm_base->clksel_core, 2, 2, CORE_L4_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x0000000C, CORE_L4_DIV << 2);
 		/* L3 */
-		sr32(&prcm_base->clksel_core, 0, 2, CORE_L3_DIV);
+		clrsetbits_le32(&prcm_base->clksel_core,
+				0x00000003, CORE_L3_DIV);
 		/* GFX */
-		sr32(&prcm_base->clksel_gfx,  0, 3, GFX_DIV_36X);
+		clrsetbits_le32(&prcm_base->clksel_gfx,
+				0x00000007, GFX_DIV_36X);
 		/* RESET MGR */
-		sr32(&prcm_base->clksel_wkup, 1, 2, WKUP_RSM);
+		clrsetbits_le32(&prcm_base->clksel_wkup,
+				0x00000006, WKUP_RSM << 1);
 		/* FREQSEL (CORE_DPLL_FREQSEL): CM_CLKEN_PLL[4:7] */
-		sr32(&prcm_base->clken_pll,   4, 4, ptr->fsel);
+		clrsetbits_le32(&prcm_base->clken_pll,
+				0x000000F0, ptr->fsel << 4);
 		/* LOCK MODE */
-		sr32(&prcm_base->clken_pll,   0, 3, PLL_LOCK);
+		clrsetbits_le32(&prcm_base->clken_pll,
+				0x00000007, PLL_LOCK);
 
 		wait_on_value(ST_CORE_CLK, 1, &prcm_base->idlest_ckgen,
 				LDELAY);
@@ -416,29 +449,29 @@ static void dpll3_init_36xx(u32 sil_index, u32 clk_index)
 		f_lock_pll = (void *) (SRAM_CLK_CODE);
 
 		p0 = readl(&prcm_base->clken_pll);
-		sr32(&p0, 0, 3, PLL_FAST_RELOCK_BYPASS);
+		clrsetbits_le32(&p0, 0x00000007, PLL_FAST_RELOCK_BYPASS);
 		/* FREQSEL (CORE_DPLL_FREQSEL): CM_CLKEN_PLL[4:7] */
-		sr32(&p0, 4, 4, ptr->fsel);
+		clrsetbits_le32(&p0, 0x000000F0, ptr->fsel << 4);
 
 		p1 = readl(&prcm_base->clksel1_pll);
 		/* M2 (CORE_DPLL_CLKOUT_DIV): CM_CLKSEL1_PLL[27:31] */
-		sr32(&p1, 27, 5, ptr->m2);
+		clrsetbits_le32(&p1, 0xF8000000, ptr->m2 << 27);
 		/* M (CORE_DPLL_MULT): CM_CLKSEL1_PLL[16:26] */
-		sr32(&p1, 16, 11, ptr->m);
+		clrsetbits_le32(&p1, 0x07FF0000, ptr->m << 16);
 		/* N (CORE_DPLL_DIV): CM_CLKSEL1_PLL[8:14] */
-		sr32(&p1, 8, 7, ptr->n);
+		clrsetbits_le32(&p1, 0x00007F00, ptr->n << 8);
 		/* Source is the CM_96M_FCLK: CM_CLKSEL1_PLL[6] */
-		sr32(&p1, 6, 1, 0);
+		clrbits_le32(&p1, 0x00000040);
 
 		p2 = readl(&prcm_base->clksel_core);
 		/* SSI */
-		sr32(&p2, 8, 4, CORE_SSI_DIV);
+		clrsetbits_le32(&p2, 0x00000F00, CORE_SSI_DIV << 8);
 		/* FSUSB */
-		sr32(&p2, 4, 2, CORE_FUSB_DIV);
+		clrsetbits_le32(&p2, 0x00000030, CORE_FUSB_DIV << 4);
 		/* L4 */
-		sr32(&p2, 2, 2, CORE_L4_DIV);
+		clrsetbits_le32(&p2, 0x0000000C, CORE_L4_DIV << 2);
 		/* L3 */
-		sr32(&p2, 0, 2, CORE_L3_DIV);
+		clrsetbits_le32(&p2, 0x00000003, CORE_L3_DIV);
 
 		p3 = (u32)&prcm_base->idlest_ckgen;
 
@@ -457,35 +490,35 @@ static void dpll4_init_36xx(u32 sil_index, u32 clk_index)
 	ptr += clk_index;
 
 	/* EN_PERIPH_DPLL: CM_CLKEN_PLL[16:18] */
-	sr32(&prcm_base->clken_pll, 16, 3, PLL_STOP);
+	clrsetbits_le32(&prcm_base->clken_pll, 0x00070000, PLL_STOP << 16);
 	wait_on_value(ST_PERIPH_CLK, 0, &prcm_base->idlest_ckgen, LDELAY);
 
 	/* M6 (DIV_DPLL4): CM_CLKSEL1_EMU[24:29] */
-	sr32(&prcm_base->clksel1_emu, 24, 6, ptr->m6);
+	clrsetbits_le32(&prcm_base->clksel1_emu, 0x3F000000, ptr->m6 << 24);
 
 	/* M5 (CLKSEL_CAM): CM_CLKSEL1_EMU[0:5] */
-	sr32(&prcm_base->clksel_cam, 0, 6, ptr->m5);
+	clrsetbits_le32(&prcm_base->clksel_cam, 0x0000003F, ptr->m5);
 
 	/* M4 (CLKSEL_DSS1): CM_CLKSEL_DSS[0:5] */
-	sr32(&prcm_base->clksel_dss, 0, 6, ptr->m4);
+	clrsetbits_le32(&prcm_base->clksel_dss, 0x0000003F, ptr->m4);
 
 	/* M3 (CLKSEL_DSS1): CM_CLKSEL_DSS[8:13] */
-	sr32(&prcm_base->clksel_dss, 8, 6, ptr->m3);
+	clrsetbits_le32(&prcm_base->clksel_dss, 0x00003F00, ptr->m3 << 8);
 
 	/* M2 (DIV_96M): CM_CLKSEL3_PLL[0:4] */
-	sr32(&prcm_base->clksel3_pll, 0, 5, ptr->m2);
+	clrsetbits_le32(&prcm_base->clksel3_pll, 0x0000001F, ptr->m2);
 
 	/* M (PERIPH_DPLL_MULT): CM_CLKSEL2_PLL[8:19] */
-	sr32(&prcm_base->clksel2_pll, 8, 12, ptr->m);
+	clrsetbits_le32(&prcm_base->clksel2_pll, 0x000FFF00, ptr->m << 8);
 
 	/* N (PERIPH_DPLL_DIV): CM_CLKSEL2_PLL[0:6] */
-	sr32(&prcm_base->clksel2_pll, 0, 7, ptr->n);
+	clrsetbits_le32(&prcm_base->clksel2_pll, 0x0000007F, ptr->n);
 
 	/* M2DIV (CLKSEL_96M): CM_CLKSEL_CORE[12:13] */
-	sr32(&prcm_base->clksel_core, 12, 2, ptr->m2div);
+	clrsetbits_le32(&prcm_base->clksel_core, 0x00003000, ptr->m2div << 12);
 
 	/* LOCK MODE (EN_PERIPH_DPLL): CM_CLKEN_PLL[16:18] */
-	sr32(&prcm_base->clken_pll, 16, 3, PLL_LOCK);
+	clrsetbits_le32(&prcm_base->clken_pll, 0x00070000, PLL_LOCK << 16);
 	wait_on_value(ST_PERIPH_CLK, 2, &prcm_base->idlest_ckgen, LDELAY);
 }
 
@@ -498,12 +531,16 @@ static void dpll5_init_36xx(u32 sil_index, u32 clk_index)
 	ptr = ptr + clk_index;
 
 	/* PER2 DPLL (DPLL5) */
-	sr32(&prcm_base->clken2_pll, 0, 3, PLL_STOP);
+	clrsetbits_le32(&prcm_base->clken2_pll, 0x00000007, PLL_STOP);
 	wait_on_value(1, 0, &prcm_base->idlest2_ckgen, LDELAY);
-	sr32(&prcm_base->clksel5_pll, 0, 5, ptr->m2); /* set M2 (usbtll_fck) */
-	sr32(&prcm_base->clksel4_pll, 8, 11, ptr->m); /* set m (11-bit multiplier) */
-	sr32(&prcm_base->clksel4_pll, 0, 7, ptr->n); /* set n (7-bit divider)*/
-	sr32(&prcm_base->clken2_pll, 0, 3, PLL_LOCK);   /* lock mode */
+	/* set M2 (usbtll_fck) */
+	clrsetbits_le32(&prcm_base->clksel5_pll, 0x0000001F, ptr->m2);
+	/* set m (11-bit multiplier) */
+	clrsetbits_le32(&prcm_base->clksel4_pll, 0x0007FF00, ptr->m << 8);
+	/* set n (7-bit divider)*/
+	clrsetbits_le32(&prcm_base->clksel4_pll, 0x0000007F, ptr->n);
+	/* lock mode */
+	clrsetbits_le32(&prcm_base->clken2_pll, 0x00000007, PLL_LOCK);
 	wait_on_value(1, 1, &prcm_base->idlest2_ckgen, LDELAY);
 }
 
@@ -518,13 +555,13 @@ static void mpu_init_36xx(u32 sil_index, u32 clk_index)
 	/* MPU DPLL (unlocked already */
 
 	/* M2 (MPU_DPLL_CLKOUT_DIV) : CM_CLKSEL2_PLL_MPU[0:4] */
-	sr32(&prcm_base->clksel2_pll_mpu, 0, 5, ptr->m2);
+	clrsetbits_le32(&prcm_base->clksel2_pll_mpu, 0x0000001F, ptr->m2);
 
 	/* M (MPU_DPLL_MULT) : CM_CLKSEL2_PLL_MPU[8:18] */
-	sr32(&prcm_base->clksel1_pll_mpu, 8, 11, ptr->m);
+	clrsetbits_le32(&prcm_base->clksel1_pll_mpu, 0x0007FF00, ptr->m << 8);
 
 	/* N (MPU_DPLL_DIV) : CM_CLKSEL2_PLL_MPU[0:6] */
-	sr32(&prcm_base->clksel1_pll_mpu, 0, 7, ptr->n);
+	clrsetbits_le32(&prcm_base->clksel1_pll_mpu, 0x0000007F, ptr->n);
 }
 
 static void iva_init_36xx(u32 sil_index, u32 clk_index)
@@ -537,20 +574,20 @@ static void iva_init_36xx(u32 sil_index, u32 clk_index)
 
 	/* IVA DPLL */
 	/* EN_IVA2_DPLL : CM_CLKEN_PLL_IVA2[0:2] */
-	sr32(&prcm_base->clken_pll_iva2, 0, 3, PLL_STOP);
+	clrsetbits_le32(&prcm_base->clken_pll_iva2, 0x00000007, PLL_STOP);
 	wait_on_value(ST_IVA2_CLK, 0, &prcm_base->idlest_pll_iva2, LDELAY);
 
 	/* M2 (IVA2_DPLL_CLKOUT_DIV) : CM_CLKSEL2_PLL_IVA2[0:4] */
-	sr32(&prcm_base->clksel2_pll_iva2, 0, 5, ptr->m2);
+	clrsetbits_le32(&prcm_base->clksel2_pll_iva2, 0x0000001F, ptr->m2);
 
 	/* M (IVA2_DPLL_MULT) : CM_CLKSEL1_PLL_IVA2[8:18] */
-	sr32(&prcm_base->clksel1_pll_iva2, 8, 11, ptr->m);
+	clrsetbits_le32(&prcm_base->clksel1_pll_iva2, 0x0007FF00, ptr->m << 8);
 
 	/* N (IVA2_DPLL_DIV) : CM_CLKSEL1_PLL_IVA2[0:6] */
-	sr32(&prcm_base->clksel1_pll_iva2, 0, 7, ptr->n);
+	clrsetbits_le32(&prcm_base->clksel1_pll_iva2, 0x0000007F, ptr->n);
 
 	/* LOCK (MODE (EN_IVA2_DPLL) : CM_CLKEN_PLL_IVA2[0:2] */
-	sr32(&prcm_base->clken_pll_iva2, 0, 3, PLL_LOCK);
+	clrsetbits_le32(&prcm_base->clken_pll_iva2, 0x00000007, PLL_LOCK);
 
 	wait_on_value(ST_IVA2_CLK, 1, &prcm_base->idlest_pll_iva2, LDELAY);
 }
@@ -574,16 +611,16 @@ void prcm_init(void)
 	get_sys_clkin_sel(osc_clk, &sys_clkin_sel);
 
 	/* set input crystal speed */
-	sr32(&prm_base->clksel, 0, 3, sys_clkin_sel);
+	clrsetbits_le32(&prm_base->clksel, 0x00000007, sys_clkin_sel);
 
 	/* If the input clock is greater than 19.2M always divide/2 */
 	if (sys_clkin_sel > 2) {
 		/* input clock divider */
-		sr32(&prm_base->clksrc_ctrl, 6, 2, 2);
+		clrsetbits_le32(&prm_base->clksrc_ctrl, 0x000000C0, 2 << 6);
 		clk_index = sys_clkin_sel / 2;
 	} else {
 		/* input clock divider */
-		sr32(&prm_base->clksrc_ctrl, 6, 2, 1);
+		clrsetbits_le32(&prm_base->clksrc_ctrl, 0x000000C0, 1 << 6);
 		clk_index = sys_clkin_sel;
 	}
 
@@ -600,12 +637,14 @@ void prcm_init(void)
 		 * input divider to /1 as it should never set to /6.5
 		 * in this case.
 		 */
-		if (sys_clkin_sel != 1) /* 13 MHz */
+		if (sys_clkin_sel != 1) {	/* 13 MHz */
 			/* Bit 8: DPLL4_CLKINP_DIV */
-			sr32(&prm_base->clksrc_ctrl, 8, 1, 0);
+			clrbits_le32(&prm_base->clksrc_ctrl, 0x00000100);
+		}
 
 		/* Unlock MPU DPLL (slows things down, and needed later) */
-		sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOW_POWER_BYPASS);
+		clrsetbits_le32(&prcm_base->clken_pll_mpu,
+				0x00000007, PLL_LOW_POWER_BYPASS);
 		wait_on_value(ST_MPU_CLK, 0, &prcm_base->idlest_pll_mpu,
 				LDELAY);
 
@@ -616,7 +655,8 @@ void prcm_init(void)
 		mpu_init_36xx(0, clk_index);
 
 		/* Lock MPU DPLL to set frequency */
-		sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOCK);
+		clrsetbits_le32(&prcm_base->clken_pll_mpu,
+				0x00000007, PLL_LOCK);
 		wait_on_value(ST_MPU_CLK, 1, &prcm_base->idlest_pll_mpu,
 				LDELAY);
 	} else {
@@ -633,7 +673,8 @@ void prcm_init(void)
 			sil_index = 1;
 
 		/* Unlock MPU DPLL (slows things down, and needed later) */
-		sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOW_POWER_BYPASS);
+		clrsetbits_le32(&prcm_base->clken_pll_mpu,
+				0x00000007, PLL_LOW_POWER_BYPASS);
 		wait_on_value(ST_MPU_CLK, 0, &prcm_base->idlest_pll_mpu,
 				LDELAY);
 
@@ -646,14 +687,15 @@ void prcm_init(void)
 		mpu_init_34xx(sil_index, clk_index);
 
 		/* Lock MPU DPLL to set frequency */
-		sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOCK);
+		clrsetbits_le32(&prcm_base->clken_pll_mpu,
+				0x00000007, PLL_LOCK);
 		wait_on_value(ST_MPU_CLK, 1, &prcm_base->idlest_pll_mpu,
 				LDELAY);
 	}
 
 	/* Set up GPTimers to sys_clk source only */
-	sr32(&prcm_base->clksel_per, 0, 8, 0xff);
-	sr32(&prcm_base->clksel_wkup, 0, 1, 1);
+	setbits_le32(&prcm_base->clksel_per, 0x000000FF);
+	setbits_le32(&prcm_base->clksel_wkup, 1);
 
 	sdelay(5000);
 }
@@ -666,16 +708,16 @@ void ehci_clocks_enable(void)
 	struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
 
 	/* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */
-	sr32(&prcm_base->iclken_usbhost, 0, 1, 1);
+	setbits_le32(&prcm_base->iclken_usbhost, 1);
 	/*
 	 * Enable USBHOST_48M_FCLK (USBHOST_FCLK1)
 	 * and USBHOST_120M_FCLK (USBHOST_FCLK2)
 	 */
-	sr32(&prcm_base->fclken_usbhost, 0, 2, 3);
+	setbits_le32(&prcm_base->fclken_usbhost, 0x00000003);
 	/* Enable USBTTL_ICLK */
-	sr32(&prcm_base->iclken3_core, 2, 1, 1);
+	setbits_le32(&prcm_base->iclken3_core, 0x00000004);
 	/* Enable USBTTL_FCLK */
-	sr32(&prcm_base->fclken3_core, 2, 1, 1);
+	setbits_le32(&prcm_base->fclken3_core, 0x00000004);
 }
 
 /******************************************************************************
@@ -686,62 +728,62 @@ void per_clocks_enable(void)
 	struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
 
 	/* Enable GP2 timer. */
-	sr32(&prcm_base->clksel_per, 0, 1, 0x1);	/* GPT2 = sys clk */
-	sr32(&prcm_base->iclken_per, 3, 1, 0x1);	/* ICKen GPT2 */
-	sr32(&prcm_base->fclken_per, 3, 1, 0x1);	/* FCKen GPT2 */
+	setbits_le32(&prcm_base->clksel_per, 0x01);	/* GPT2 = sys clk */
+	setbits_le32(&prcm_base->iclken_per, 0x08);	/* ICKen GPT2 */
+	setbits_le32(&prcm_base->fclken_per, 0x08);	/* FCKen GPT2 */
 
 #ifdef CONFIG_SYS_NS16550
 	/* Enable UART1 clocks */
-	sr32(&prcm_base->fclken1_core, 13, 1, 0x1);
-	sr32(&prcm_base->iclken1_core, 13, 1, 0x1);
+	setbits_le32(&prcm_base->fclken1_core, 0x00002000);
+	setbits_le32(&prcm_base->iclken1_core, 0x00002000);
 
 	/* UART 3 Clocks */
-	sr32(&prcm_base->fclken_per, 11, 1, 0x1);
-	sr32(&prcm_base->iclken_per, 11, 1, 0x1);
+	setbits_le32(&prcm_base->fclken_per, 0x00000800);
+	setbits_le32(&prcm_base->iclken_per, 0x00000800);
 #endif
 
 #ifdef CONFIG_OMAP3_GPIO_2
-	sr32(&prcm_base->fclken_per, 13, 1, 1);
-	sr32(&prcm_base->iclken_per, 13, 1, 1);
+	setbits_le32(&prcm_base->fclken_per, 0x00002000);
+	setbits_le32(&prcm_base->iclken_per, 0x00002000);
 #endif
 #ifdef CONFIG_OMAP3_GPIO_3
-	sr32(&prcm_base->fclken_per, 14, 1, 1);
-	sr32(&prcm_base->iclken_per, 14, 1, 1);
+	setbits_le32(&prcm_base->fclken_per, 0x00004000);
+	setbits_le32(&prcm_base->iclken_per, 0x00004000);
 #endif
 #ifdef CONFIG_OMAP3_GPIO_4
-	sr32(&prcm_base->fclken_per, 15, 1, 1);
-	sr32(&prcm_base->iclken_per, 15, 1, 1);
+	setbits_le32(&prcm_base->fclken_per, 0x00008000);
+	setbits_le32(&prcm_base->iclken_per, 0x00008000);
 #endif
 #ifdef CONFIG_OMAP3_GPIO_5
-	sr32(&prcm_base->fclken_per, 16, 1, 1);
-	sr32(&prcm_base->iclken_per, 16, 1, 1);
+	setbits_le32(&prcm_base->fclken_per, 0x00010000);
+	setbits_le32(&prcm_base->iclken_per, 0x00010000);
 #endif
 #ifdef CONFIG_OMAP3_GPIO_6
-	sr32(&prcm_base->fclken_per, 17, 1, 1);
-	sr32(&prcm_base->iclken_per, 17, 1, 1);
+	setbits_le32(&prcm_base->fclken_per, 0x00020000);
+	setbits_le32(&prcm_base->iclken_per, 0x00020000);
 #endif
 
 #ifdef CONFIG_SYS_I2C_OMAP34XX
 	/* Turn on all 3 I2C clocks */
-	sr32(&prcm_base->fclken1_core, 15, 3, 0x7);
-	sr32(&prcm_base->iclken1_core, 15, 3, 0x7);	/* I2C1,2,3 = on */
+	setbits_le32(&prcm_base->fclken1_core, 0x00038000);
+	setbits_le32(&prcm_base->iclken1_core, 0x00038000); /* I2C1,2,3 = on */
 #endif
 	/* Enable the ICLK for 32K Sync Timer as its used in udelay */
-	sr32(&prcm_base->iclken_wkup, 2, 1, 0x1);
+	setbits_le32(&prcm_base->iclken_wkup, 0x00000004);
 
 	if (get_cpu_family() != CPU_AM35XX)
-		sr32(&prcm_base->fclken_iva2, 0, 32, FCK_IVA2_ON);
-
-	sr32(&prcm_base->fclken1_core, 0, 32, FCK_CORE1_ON);
-	sr32(&prcm_base->iclken1_core, 0, 32, ICK_CORE1_ON);
-	sr32(&prcm_base->iclken2_core, 0, 32, ICK_CORE2_ON);
-	sr32(&prcm_base->fclken_wkup, 0, 32, FCK_WKUP_ON);
-	sr32(&prcm_base->iclken_wkup, 0, 32, ICK_WKUP_ON);
-	sr32(&prcm_base->fclken_dss, 0, 32, FCK_DSS_ON);
-	sr32(&prcm_base->iclken_dss, 0, 32, ICK_DSS_ON);
+		out_le32(&prcm_base->fclken_iva2, FCK_IVA2_ON);
+
+	out_le32(&prcm_base->fclken1_core, FCK_CORE1_ON);
+	out_le32(&prcm_base->iclken1_core, ICK_CORE1_ON);
+	out_le32(&prcm_base->iclken2_core, ICK_CORE2_ON);
+	out_le32(&prcm_base->fclken_wkup, FCK_WKUP_ON);
+	out_le32(&prcm_base->iclken_wkup, ICK_WKUP_ON);
+	out_le32(&prcm_base->fclken_dss, FCK_DSS_ON);
+	out_le32(&prcm_base->iclken_dss, ICK_DSS_ON);
 	if (get_cpu_family() != CPU_AM35XX) {
-		sr32(&prcm_base->fclken_cam, 0, 32, FCK_CAM_ON);
-		sr32(&prcm_base->iclken_cam, 0, 32, ICK_CAM_ON);
+		out_le32(&prcm_base->fclken_cam, FCK_CAM_ON);
+		out_le32(&prcm_base->iclken_cam, ICK_CAM_ON);
 	}
 
 	sdelay(1000);