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authorDirk Eibach <eibach@gdsys.de>2011-04-06 13:53:43 +0200
committerStefan Roese <sr@denx.de>2011-04-21 10:34:15 +0200
commit6853cc4b9452f6a03df95cdb5846655a498bd08b (patch)
tree46a7ba0d2b91f2c24325a7311f977d9d5a9f064d
parentd3da7225526d996493fd45ec3d259c467db9a9d0 (diff)
downloadu-boot-linaro-stable-6853cc4b9452f6a03df95cdb5846655a498bd08b.tar.gz
ppc4xx: Improve DLVision-10G PLL setup
Signed-off-by: Dirk Eibach <eibach@gdsys.de> Signed-off-by: Stefan Roese <sr@denx.de>
-rw-r--r--board/gdsys/common/osd.c55
1 files changed, 52 insertions, 3 deletions
diff --git a/board/gdsys/common/osd.c b/board/gdsys/common/osd.c
index 4d8c046a8..6e4edaebb 100644
--- a/board/gdsys/common/osd.c
+++ b/board/gdsys/common/osd.c
@@ -30,7 +30,12 @@
#define CH7301_I2C_ADDR 0x75
#define ICS8N3QV01_I2C_ADDR 0x6E
-#define ICS8N3QV01_FREF 114285
+#define ICS8N3QV01_FREF 114285000
+#define ICS8N3QV01_FREF_LL 114285000LL
+#define ICS8N3QV01_F_DEFAULT_0 156250000LL
+#define ICS8N3QV01_F_DEFAULT_1 125000000LL
+#define ICS8N3QV01_F_DEFAULT_2 100000000LL
+#define ICS8N3QV01_F_DEFAULT_3 25175000LL
#define SIL1178_MASTER_I2C_ADDRESS 0x38
#define SIL1178_SLAVE_I2C_ADDRESS 0x39
@@ -150,6 +155,41 @@ static void mpc92469ac_set(unsigned screen, unsigned int fout)
#endif
#ifdef CONFIG_SYS_ICS8N3QV01
+
+static unsigned int ics8n3qv01_get_fout_calc(unsigned screen, unsigned index)
+{
+ unsigned long long n;
+ unsigned long long mint;
+ unsigned long long mfrac;
+ u8 reg_a, reg_b, reg_c, reg_d, reg_f;
+ unsigned long long fout_calc;
+
+ if (index > 3)
+ return 0;
+
+ reg_a = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 0 + index);
+ reg_b = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 4 + index);
+ reg_c = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 8 + index);
+ reg_d = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 12 + index);
+ reg_f = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 20 + index);
+
+ mint = ((reg_a >> 1) & 0x1f) | (reg_f & 0x20);
+ mfrac = ((reg_a & 0x01) << 17) | (reg_b << 9) | (reg_c << 1)
+ | (reg_d >> 7);
+ n = reg_d & 0x7f;
+
+ fout_calc = (mint * ICS8N3QV01_FREF_LL
+ + mfrac * ICS8N3QV01_FREF_LL / 262144LL
+ + ICS8N3QV01_FREF_LL / 524288LL
+ + n / 2)
+ / n
+ * 1000000
+ / (1000000 - 100);
+
+ return fout_calc;
+}
+
+
static void ics8n3qv01_calc_parameters(unsigned int fout,
unsigned int *_mint, unsigned int *_mfrac,
unsigned int *_n)
@@ -160,7 +200,7 @@ static void ics8n3qv01_calc_parameters(unsigned int fout,
unsigned int mint;
unsigned long long mfrac;
- n = 2550000000U / fout;
+ n = (2215000000U + fout / 2) / fout;
if ((n & 1) && (n > 5))
n -= 1;
@@ -184,9 +224,18 @@ static void ics8n3qv01_set(unsigned screen, unsigned int fout)
unsigned int n;
unsigned int mint;
unsigned int mfrac;
+ unsigned int fout_calc;
+ unsigned long long fout_prog;
+ long long off_ppm;
u8 reg0, reg4, reg8, reg12, reg18, reg20;
- ics8n3qv01_calc_parameters(fout, &mint, &mfrac, &n);
+ fout_calc = ics8n3qv01_get_fout_calc(screen, 1);
+ off_ppm = (fout_calc - ICS8N3QV01_F_DEFAULT_1) * 1000000
+ / ICS8N3QV01_F_DEFAULT_1;
+ printf(" PLL is off by %lld ppm\n", off_ppm);
+ fout_prog = (unsigned long long)fout * (unsigned long long)fout_calc
+ / ICS8N3QV01_F_DEFAULT_1;
+ ics8n3qv01_calc_parameters(fout_prog, &mint, &mfrac, &n);
reg0 = fpga_iic_read(screen, ICS8N3QV01_I2C_ADDR, 0) & 0xc0;
reg0 |= (mint & 0x1f) << 1;