mx7ulp: Fix APLL num and denom setting issue

For the current APLL setting, as we want the APLL PFD0 to meet DDR clock 320Mhz requirement.
We set MULT to 20, NUM to 4 and DENOM to 2, to get final 22 multiplier. But according to the RM,
the NUM should always be less than the DENOM. So our setting violates the rule.

Actually the ROM has already set the MULT to 22 and leave NUM/DENOM in default value. The calculated APLL PFD0 clock
is 318.9888Mhz, which also meet the DDR requirement.
To fix the issue, we remove the PLL settings in DCD to use default value from ROM, and only set the PFD0 FRAC.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/board/freescale/mx7ulp_evk/imximage.cfg b/board/freescale/mx7ulp_evk/imximage.cfg
index a6e18d9440784a354352cffca47f8eca26c7ca02..78df69f40e69f5d8b1e461f8c47dc94de5fd3aa7 100644 (file)
--- a/board/freescale/mx7ulp_evk/imximage.cfg
+++ b/board/freescale/mx7ulp_evk/imximage.cfg
@@ -43,13 +43,7 @@ CSF CONFIG_CSF_SIZE
  */
 DATA 4   0x403f00dc 0x00000000
 DATA 4   0x403e0040 0x01000020
-DATA 4   0x403e0500 0x01000000
 DATA 4   0x403e050c 0x80808080
-DATA 4   0x403e0508 0x00140000
-DATA 4   0x403E0510 0x00000004
-DATA 4   0x403E0514 0x00000002
-DATA 4   0x403e0500 0x00000001
-CHECK_BITS_SET 4 0x403e0500 0x01000000
 DATA 4   0x403e050c 0x8080801E
 CHECK_BITS_SET 4 0x403e050c 0x00000040
 DATA 4   0x403E0030 0x00000001

diff --git a/board/freescale/mx7ulp_evk/plugin.S b/board/freescale/mx7ulp_evk/plugin.S
index 082b2beaa3c78e451151d885999360d474232c02..802ae5f49a835265894923946c0d50940bb6e3f4 100644 (file)
--- a/board/freescale/mx7ulp_evk/plugin.S
+++ b/board/freescale/mx7ulp_evk/plugin.S
@@ -13,26 +13,9 @@
        ldr r2, =0x403e0000
        ldr r3, =0x01000020
        str r3, [r2, #0x40]
-       ldr r3, =0x01000000
-       str r3, [r2, #0x500]
+
        ldr r3, =0x80808080
        str r3, [r2, #0x50c]
-       ldr r3, =0x00140000
-       str r3, [r2, #0x508]
-       ldr r3, =0x00000004
-       str r3, [r2, #0x510]
-       ldr r3, =0x00000002
-       str r3, [r2, #0x514]
-       ldr r3, =0x00000001
-       str r3, [r2, #0x500]
-
-       ldr r3, =0x01000000
-wait1:
-       ldr r4, [r2, #0x500]
-       and r4, r3
-       cmp r4, r3
-       bne wait1
-
        ldr r3, =0x8080801E
        str r3, [r2, #0x50c]