diff options
Diffstat (limited to 'arch/arm/mach-mx23/emi.inc')
| -rw-r--r-- | arch/arm/mach-mx23/emi.inc | 68 |
1 files changed, 53 insertions, 15 deletions
diff --git a/arch/arm/mach-mx23/emi.inc b/arch/arm/mach-mx23/emi.inc index 194181f9f753..290d35ed2729 100644 --- a/arch/arm/mach-mx23/emi.inc +++ b/arch/arm/mach-mx23/emi.inc @@ -20,15 +20,38 @@ * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -__mx23_emi_set_values: + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + + +__mx23_emi_set_values_xtal: stmfd r9!, {r0 - r4, lr} + mov r1, #(HW_CLKCTRL_EMI_ADDR & 0x000000FF) orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0x0000FF00) orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0x00FF0000) orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0xFF000000) -@ DDC_RESNCY is deprecated at mx23 -@ mov r3, #BM_CLKCTRL_EMI_DCC_RESYNC_ENABLE +32: ldr r4, [r1] + tst r4, #BM_CLKCTRL_EMI_BUSY_REF_XTAL + bne 32b + b 4f + +__mx23_emi_set_values2: + + stmfd r9!, {r0 - r4, lr} + + mov r1, #(HW_CLKCTRL_EMI_ADDR & 0x000000FF) + orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0x0000FF00) + orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0x00FF0000) + orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0xFF000000) mov r0, #(HW_CLKCTRL_FRAC_ADDR & 0x000000FF) orr r0, r0, #(HW_CLKCTRL_FRAC_ADDR & 0x0000FF00) @@ -36,17 +59,34 @@ __mx23_emi_set_values: orr r0, r0, #(HW_CLKCTRL_FRAC_ADDR & 0xFF000000) ldr r2, [r0] - and r4, r2, #BM_CLKCTRL_FRAC_EMIFRAC - lsr r4, r4, #8 - /* new pll div > cur pll div? */ - cmp r4, r8 - bgt 1f + @clear EMIFRAC bits and store result in r4 bic r4, r2, #BM_CLKCTRL_FRAC_EMIFRAC - orr r4, r4, r8, lsl #8 - str r4, [r0] - nop - nop - nop + + orr r4, r4, r8, lsl #BP_CLKCTRL_FRAC_EMIFRAC + str r4, [r0] + + @ ungate ref_emi + mov r0, #(HW_CLKCTRL_FRAC_CLR_ADDR & 0x000000FF) + orr r0, r0, #(HW_CLKCTRL_FRAC_CLR_ADDR & 0x0000FF00) + orr r0, r0, #(HW_CLKCTRL_FRAC_CLR_ADDR & 0x00FF0000) + orr r0, r0, #(HW_CLKCTRL_FRAC_CLR_ADDR & 0xFF000000) + + mov r2, #(BM_CLKCTRL_FRAC_CLKGATEEMI) + str r2, [r0] + + + @ set the integer divider + ldr r2, [r1] + bic r2, r2, #BM_CLKCTRL_EMI_DIV_EMI + orr r2, r2, r7, lsl #BP_CLKCTRL_EMI_DIV_EMI + + str r2, [r1] + + @ wait for clock to stabilize +50: ldr r2, [r1] + tst r2, #BM_CLKCTRL_EMI_BUSY_REF_EMI + bne 50b + b 4f @ Change integer/fractional dividers. @@ -103,8 +143,6 @@ __mx23_emi_set_values: 31: ldr r4, [r1] tst r4, #BM_CLKCTRL_EMI_BUSY_REF_EMI bne 31b - tst r4, #BM_CLKCTRL_EMI_BUSY_REF_XTAL - bne 31b 4: ldmfd r9!, {r0 - r4, lr} mov pc, lr |